======================================
| [   42.503802][   T11] ==================================================================
| [ 42.504254][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) 
| [   42.504637][   T11] Read of size 1 at addr ffff888003bc5abc by task kworker/u8:0/11
| [   42.505048][   T11]
[   42.505594][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.506239][   T11] Workqueue: netns cleanup_net
[   42.506493][   T11] Call Trace:
[   42.506673][   T11]  <TASK>
[ 42.506861][ T11] dump_stack_lvl (lib/dump_stack.c:107) 
[ 42.507103][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) 
[ 42.507447][ T11] ? kobject_put (lib/kobject.c:729) 
[ 42.507680][ T11] print_report (mm/kasan/report.c:489) 
[ 42.507939][ T11] ? kasan_addr_to_slab (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/page-flags.h:481 mm/kasan/../slab.h:206 mm/kasan/common.c:38) 
[ 42.508206][ T11] kasan_report (mm/kasan/report.c:603) 
[ 42.508456][ T11] ? kobject_put (lib/kobject.c:729) 
[ 42.508695][ T11] kobject_put (lib/kobject.c:729) 
[ 42.508962][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) 
[ 42.509263][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 42.509532][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 42.509810][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 42.510050][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 42.510346][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 42.510612][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 42.510906][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 42.511183][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 42.511442][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 42.511686][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 42.511972][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 42.512245][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 42.512542][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 42.512815][ T11] kthread (kernel/kthread.c:388) 
[ 42.513029][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.513275][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 42.513533][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.513809][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   42.534151][   T11] ------------[ cut here ]------------
| [   42.534472][   T11] refcount_t: underflow; use-after-free.
| [ 42.534825][ T11] WARNING: CPU: 3 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
| [   42.535451][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   42.536421][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.537147][   T11] Workqueue: netns cleanup_net
[ 42.537447][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[ 42.537846][ T11] Code: f9 82 03 80 fb 01 0f 87 ee 02 b1 01 83 e3 01 0f 85 4d ff ff ff c6 05 9a f9 82 03 01 90 48 c7 c7 20 7a a2 89 e8 3e 05 2a ff 90 <0f> 0b 90 90 e9 2f ff ff ff 48 89 df e8 8c 68 a6 ff e9 b6 fe ff ff
All code
========
   0:	f9                   	stc
   1:	82                   	(bad)
   2:	03 80 fb 01 0f 87    	add    -0x78f0fe05(%rax),%eax
   8:	ee                   	out    %al,(%dx)
   9:	02 b1 01 83 e3 01    	add    0x1e38301(%rcx),%dh
   f:	0f 85 4d ff ff ff    	jne    0xffffffffffffff62
  15:	c6 05 9a f9 82 03 01 	movb   $0x1,0x382f99a(%rip)        # 0x382f9b6
  1c:	90                   	nop
  1d:	48 c7 c7 20 7a a2 89 	mov    $0xffffffff89a27a20,%rdi
  24:	e8 3e 05 2a ff       	call   0xffffffffff2a0567
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	e9 2f ff ff ff       	jmp    0xffffffffffffff62
  33:	48 89 df             	mov    %rbx,%rdi
  36:	e8 8c 68 a6 ff       	call   0xffffffffffa668c7
  3b:	e9 b6 fe ff ff       	jmp    0xfffffffffffffef6

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	e9 2f ff ff ff       	jmp    0xffffffffffffff38
   9:	48 89 df             	mov    %rbx,%rdi
   c:	e8 8c 68 a6 ff       	call   0xffffffffffa6689d
  11:	e9 b6 fe ff ff       	jmp    0xfffffffffffffecc
[   42.539080][   T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282
[   42.539422][   T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff86d1056f
[   42.539835][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   42.540282][   T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18
[   42.540749][   T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff8880085ba000
[   42.541217][   T11] R13: ffff8880085badf8 R14: ffffc900000bfc98 R15: ffff8880085babc0
[   42.541657][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[   42.542165][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.542513][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa002 CR4: 00000000001706f0
[   42.542930][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.543350][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.543769][   T11] Call Trace:
[   42.543946][   T11]  <TASK>
[ 42.544113][ T11] ? __warn (kernel/panic.c:677) 
[ 42.544331][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[ 42.544619][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 42.544910][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) 
[ 42.545200][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 42.545482][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 42.545756][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 42.546056][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 42.546318][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[ 42.546646][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[ 42.546993][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) 
[ 42.547271][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 42.547541][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 42.547860][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 42.548129][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 42.548445][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 42.548708][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 42.548965][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 42.549238][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 42.549506][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 42.549816][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 42.550139][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 42.550416][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 42.550671][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 42.550976][ T11] kthread (kernel/kthread.c:388) 
[ 42.551198][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.551441][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 42.551678][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.551920][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   42.555075][   T11] ------------[ cut here ]------------
| [   42.555402][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 42.555793][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   42.556360][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   42.557362][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.558012][   T11] Workqueue: netns cleanup_net
[ 42.558268][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.558573][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   42.559587][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   42.560010][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   42.560501][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   42.560973][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   42.561418][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880085ba628
[   42.561924][   T11] R13: ffff8880085badf8 R14: ffffc900000bfc98 R15: ffff8880085babc0
[   42.562371][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[   42.562910][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.563334][   T11] CR2: 00007ffe4ebc8f18 CR3: 0000000024134004 CR4: 00000000001706f0
[   42.563786][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.564278][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.564750][   T11] Call Trace:
[   42.564923][   T11]  <TASK>
[ 42.565085][ T11] ? __warn (kernel/panic.c:677) 
[ 42.565332][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 42.565630][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.565942][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 42.566204][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 42.566436][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 42.566685][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 42.566954][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 42.567201][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.567476][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 42.567723][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 42.568011][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 42.568252][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 42.568550][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 42.568809][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 42.569063][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 42.569377][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 42.569652][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 42.569954][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 42.570273][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 42.570545][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 42.570827][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 42.571140][ T11] kthread (kernel/kthread.c:388) 
[ 42.571386][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.571661][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 42.571898][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.572158][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   42.721088][   T11] ------------[ cut here ]------------
| [   42.721439][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 42.721873][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   42.722427][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   42.723420][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.724119][   T11] Workqueue: netns cleanup_net
[ 42.724376][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.724714][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   42.725863][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   42.726235][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   42.726707][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   42.727151][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   42.727564][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800791a628
[   42.727987][   T11] R13: ffff88800791adf8 R14: ffffc900000bfc98 R15: ffff88800791abc0
[   42.728406][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[   42.728996][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.729394][   T11] CR2: 00007f2ef07ac270 CR3: 0000000024134004 CR4: 00000000001706f0
[   42.729894][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.730364][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.730855][   T11] Call Trace:
[   42.731068][   T11]  <TASK>
[ 42.731241][ T11] ? __warn (kernel/panic.c:677) 
[ 42.731490][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 42.731786][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.732121][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 42.732401][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 42.732698][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 42.732983][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 42.733282][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 42.733554][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.733867][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 42.734123][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 42.734461][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 42.734725][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 42.735014][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 42.735303][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 42.735583][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 42.735889][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 42.736184][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 42.736471][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 42.736805][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 42.737082][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 42.737361][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 42.737678][ T11] kthread (kernel/kthread.c:388) 
[ 42.737912][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.738205][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 42.738491][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.738762][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   42.910376][   T11] ------------[ cut here ]------------
| [   42.910687][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 42.911078][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   42.911562][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   42.912430][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.913229][   T11] Workqueue: netns cleanup_net
[ 42.913553][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.913906][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   42.914971][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   42.915350][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   42.915769][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   42.916233][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   42.916689][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008702628
[   42.917153][   T11] R13: ffff888008702df8 R14: ffffc900000bfc98 R15: ffff888008702bc0
[   42.917593][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[   42.918104][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.918508][   T11] CR2: 00007fc5ebb3f270 CR3: 0000000024134001 CR4: 00000000001706f0
[   42.918968][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.919411][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.919871][   T11] Call Trace:
[   42.920104][   T11]  <TASK>
[ 42.920278][ T11] ? __warn (kernel/panic.c:677) 
[ 42.920515][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 42.920777][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.921061][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 42.921311][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 42.921542][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 42.921788][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 42.922066][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 42.922303][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 42.922581][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 42.922832][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 42.923154][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 42.923413][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 42.923691][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 42.924020][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 42.924328][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 42.924630][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 42.924935][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 42.925211][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 42.925524][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 42.925809][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 42.926099][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 42.926418][ T11] kthread (kernel/kthread.c:388) 
[ 42.926687][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.926983][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 42.927243][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 42.927534][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   43.111116][   T11] ------------[ cut here ]------------
| [   43.111422][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 43.111892][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   43.112485][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   43.113426][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   43.114169][   T11] Workqueue: netns cleanup_net
[ 43.114468][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 43.114809][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   43.115892][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   43.116262][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   43.116747][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   43.117220][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   43.117694][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880059c2628
[   43.118181][   T11] R13: ffff8880059c2df8 R14: ffffc900000bfc98 R15: ffff8880059c2bc0
[   43.118684][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[   43.119215][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   43.119596][   T11] CR2: 00007fad3f4d7000 CR3: 0000000024134005 CR4: 00000000001706f0
[   43.120098][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   43.120547][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   43.121007][   T11] Call Trace:
[   43.121184][   T11]  <TASK>
[ 43.121340][ T11] ? __warn (kernel/panic.c:677) 
[ 43.121561][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 43.121821][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 43.122106][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 43.122351][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 43.122584][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 43.122884][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 43.123188][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 43.123485][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 43.123777][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 43.124087][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 43.124426][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 43.124675][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 43.124984][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 43.125279][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 43.125562][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 43.125888][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 43.126196][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 43.126481][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 43.126799][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 43.127093][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 43.127392][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 43.127723][ T11] kthread (kernel/kthread.c:388) 
[ 43.127976][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 43.128255][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 43.128529][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 43.128798][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   63.359050][   T11] ------------[ cut here ]------------
| [   63.359392][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 63.359805][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   63.360337][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   63.361351][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   63.362065][   T11] Workqueue: netns cleanup_net
[ 63.362328][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.362636][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   63.363731][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   63.364066][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   63.364484][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   63.364898][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   63.365324][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800631a628
[   63.365741][   T11] R13: ffff88800631adf8 R14: ffffc900000bfc98 R15: ffff88800631abc0
[   63.366165][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[   63.366656][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   63.367046][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134005 CR4: 00000000001706f0
[   63.367519][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   63.368008][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   63.368454][   T11] Call Trace:
[   63.368663][   T11]  <TASK>
[ 63.368840][ T11] ? __warn (kernel/panic.c:677) 
[ 63.369089][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 63.369379][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.369693][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 63.369968][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 63.370221][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 63.370502][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 63.370815][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 63.371085][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.371409][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 63.371666][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 63.372000][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 63.372262][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.372537][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 63.372833][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.373112][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 63.373419][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 63.373709][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 63.373975][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 63.374303][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 63.374591][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 63.374859][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 63.375163][ T11] kthread (kernel/kthread.c:388) 
[ 63.375407][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.375670][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 63.375909][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.376160][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   63.542076][   T11] ------------[ cut here ]------------
| [   63.542389][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 63.542759][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   63.543250][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   63.544157][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   63.544884][   T11] Workqueue: netns cleanup_net
[ 63.545198][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.545519][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   63.546637][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   63.547026][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   63.547483][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   63.547979][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   63.548441][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a1b2628
[   63.548927][   T11] R13: ffff88800a1b2df8 R14: ffffc900000bfc98 R15: ffff88800a1b2bc0
[   63.549388][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[   63.549920][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   63.550328][   T11] CR2: 00007fa552052000 CR3: 0000000024134003 CR4: 00000000001706f0
[   63.550818][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   63.551290][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   63.551768][   T11] Call Trace:
[   63.551955][   T11]  <TASK>
[ 63.552144][ T11] ? __warn (kernel/panic.c:677) 
[ 63.552392][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 63.552676][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.552955][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 63.553208][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 63.553441][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 63.553692][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 63.553971][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 63.554213][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.554489][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 63.554735][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 63.555025][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 63.555282][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.555558][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 63.555874][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.556145][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 63.556466][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 63.556760][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 63.557026][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 63.557356][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 63.557640][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 63.557922][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 63.558237][ T11] kthread (kernel/kthread.c:388) 
[ 63.558481][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.558757][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 63.559040][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.559306][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   63.723184][   T11] ------------[ cut here ]------------
| [   63.723530][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 63.724012][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   63.724495][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   63.725362][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   63.726012][   T11] Workqueue: netns cleanup_net
[ 63.726273][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.726581][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   63.727775][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   63.728152][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   63.728667][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   63.729135][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   63.729556][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006c52628
[   63.729984][   T11] R13: ffff888006c52df8 R14: ffffc900000bfc98 R15: ffff888006c52bc0
[   63.730406][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[   63.730882][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   63.731237][   T11] CR2: 00007fa552052000 CR3: 0000000024134003 CR4: 00000000001706f0
[   63.731689][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   63.732200][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   63.732701][   T11] Call Trace:
[   63.732876][   T11]  <TASK>
[ 63.733046][ T11] ? __warn (kernel/panic.c:677) 
[ 63.733321][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 63.733606][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.733940][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 63.734235][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 63.734497][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 63.734773][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 63.735119][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 63.735367][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.735723][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 63.736014][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 63.736327][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 63.736626][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.736885][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 63.737207][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.737483][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 63.737786][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 63.738101][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 63.738360][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 63.738725][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 63.738984][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 63.739233][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 63.739501][ T11] kthread (kernel/kthread.c:388) 
[ 63.739717][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.739965][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 63.740212][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.740458][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   63.917787][   T11] ------------[ cut here ]------------
| [   63.918154][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 63.918560][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   63.919150][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   63.920084][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   63.920759][   T11] Workqueue: netns cleanup_net
[ 63.921031][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.921358][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   63.922403][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   63.922810][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   63.923265][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   63.923720][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   63.924209][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880074f2628
[   63.924669][   T11] R13: ffff8880074f2df8 R14: ffffc900000bfc98 R15: ffff8880074f2bc0
[   63.925177][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[   63.925693][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   63.926131][   T11] CR2: 00007f3461594058 CR3: 0000000024134005 CR4: 00000000001706f0
[   63.926596][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   63.927051][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   63.927569][   T11] Call Trace:
[   63.927760][   T11]  <TASK>
[ 63.927940][ T11] ? __warn (kernel/panic.c:677) 
[ 63.928210][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 63.928503][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.928819][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 63.929115][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 63.929363][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 63.929611][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 63.929882][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 63.930137][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 63.930427][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 63.930688][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 63.930985][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 63.931233][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.931489][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 63.931757][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 63.932020][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 63.932297][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 63.932602][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 63.932885][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 63.933200][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 63.933490][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 63.933777][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 63.934102][ T11] kthread (kernel/kthread.c:388) 
[ 63.934351][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.934617][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 63.934896][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 63.935181][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   84.590172][   T11] ------------[ cut here ]------------
| [   84.590484][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 84.590863][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   84.591363][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   84.592298][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   84.593065][   T11] Workqueue: netns cleanup_net
[ 84.593349][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.593676][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   84.594807][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   84.595161][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   84.595609][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   84.596070][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   84.596532][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888005ffa628
[   84.597028][   T11] R13: ffff888005ffadf8 R14: ffffc900000bfc98 R15: ffff888005ffabc0
[   84.597483][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[   84.598045][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.598461][   T11] CR2: 00007f20b7980000 CR3: 0000000024134005 CR4: 00000000001706f0
[   84.598988][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   84.599472][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   84.599998][   T11] Call Trace:
[   84.600209][   T11]  <TASK>
[ 84.600397][ T11] ? __warn (kernel/panic.c:677) 
[ 84.600675][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 84.600988][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.601336][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 84.601654][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 84.601930][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 84.602252][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 84.602605][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 84.602871][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.603233][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 84.603544][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 84.603903][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 84.604171][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 84.604469][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 84.604804][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 84.605098][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 84.605457][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 84.605762][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 84.606053][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 84.606413][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 84.606703][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 84.606965][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 84.607248][ T11] kthread (kernel/kthread.c:388) 
[ 84.607466][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 84.607713][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 84.607950][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 84.608200][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   84.785263][   T11] ------------[ cut here ]------------
| [   84.785630][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 84.786065][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   84.786622][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   84.787635][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   84.788311][   T11] Workqueue: netns cleanup_net
[ 84.788569][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.788892][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   84.790060][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   84.790418][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   84.790918][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   84.791344][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   84.791780][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880068ba628
[   84.792212][   T11] R13: ffff8880068badf8 R14: ffffc900000bfc98 R15: ffff8880068babc0
[   84.792636][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[   84.793173][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.793602][   T11] CR2: 00007eff4b55d000 CR3: 0000000024134003 CR4: 00000000001706f0
[   84.794073][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   84.794546][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   84.795051][   T11] Call Trace:
[   84.795270][   T11]  <TASK>
[ 84.795452][ T11] ? __warn (kernel/panic.c:677) 
[ 84.795711][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 84.796013][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.796328][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 84.796630][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 84.796873][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 84.797179][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 84.797480][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 84.797750][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.798104][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 84.798371][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 84.798721][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 84.798996][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 84.799286][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 84.799581][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 84.799884][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 84.800237][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 84.800553][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 84.800832][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 84.801198][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 84.801473][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 84.801729][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 84.802011][ T11] kthread (kernel/kthread.c:388) 
[ 84.802240][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 84.802498][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 84.802742][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 84.803014][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   84.954262][   T11] ------------[ cut here ]------------
| [   84.954634][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 84.955121][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   84.955666][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   84.956605][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   84.957264][   T11] Workqueue: netns cleanup_net
[ 84.957530][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.957862][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   84.959001][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   84.959328][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   84.959806][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   84.960259][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   84.960748][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880060aa628
[   84.961194][   T11] R13: ffff8880060aadf8 R14: ffffc900000bfc98 R15: ffff8880060aabc0
[   84.961661][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[   84.962212][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.962589][   T11] CR2: 00007eff4b55d000 CR3: 0000000024134003 CR4: 00000000001706f0
[   84.963059][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   84.963531][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   84.963986][   T11] Call Trace:
[   84.964163][   T11]  <TASK>
[ 84.964319][ T11] ? __warn (kernel/panic.c:677) 
[ 84.964539][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 84.964803][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.965086][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 84.965330][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 84.965562][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 84.965810][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 84.966089][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 84.966327][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 84.966605][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 84.966919][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 84.967224][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 84.967493][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 84.967773][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 84.968070][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 84.968342][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 84.968652][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 84.968942][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 84.969224][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 84.969556][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 84.969856][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 84.970192][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 84.970518][ T11] kthread (kernel/kthread.c:388) 
[ 84.970774][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 84.971077][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 84.971358][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 84.971675][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   85.135569][   T11] ------------[ cut here ]------------
| [   85.135914][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 85.136377][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   85.136934][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   85.137849][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   85.138574][   T11] Workqueue: netns cleanup_net
[ 85.138858][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 85.139222][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[   85.140264][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[   85.140598][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[   85.141022][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[   85.141440][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[   85.141891][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880085da628
[   85.142383][   T11] R13: ffff8880085dadf8 R14: ffffc900000bfc98 R15: ffff8880085dabc0
[   85.142848][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[   85.143323][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   85.143703][   T11] CR2: 00007fedf7169000 CR3: 0000000024134002 CR4: 00000000001706f0
[   85.144173][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   85.144597][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   85.145019][   T11] Call Trace:
[   85.145194][   T11]  <TASK>
[ 85.145351][ T11] ? __warn (kernel/panic.c:677) 
[ 85.145568][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 85.145829][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 85.146131][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 85.146402][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 85.146688][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 85.146944][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 85.147275][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 85.147568][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 85.147912][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 85.148230][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 85.148563][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 85.148848][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 85.149161][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 85.149503][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 85.149789][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 85.150141][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 85.150479][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 85.150768][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 85.151134][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 85.151423][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 85.151736][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 85.152057][ T11] kthread (kernel/kthread.c:388) 
[ 85.152316][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 85.152618][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 85.152896][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 85.153171][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  105.292152][   T11] ------------[ cut here ]------------
| [  105.292458][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 105.292840][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  105.293336][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  105.294268][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  105.294947][   T11] Workqueue: netns cleanup_net
[ 105.295258][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.295568][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  105.296702][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  105.297048][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  105.297505][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  105.297949][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  105.298412][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006612628
[  105.298862][   T11] R13: ffff888006612df8 R14: ffffc900000bfc98 R15: ffff888006612bc0
[  105.299326][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  105.299814][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.300200][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa006 CR4: 00000000001706f0
[  105.300679][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.301126][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.301543][   T11] Call Trace:
[  105.301722][   T11]  <TASK>
[ 105.301883][ T11] ? __warn (kernel/panic.c:677) 
[ 105.302114][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 105.302373][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.302650][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.302898][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 105.303181][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 105.303476][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 105.303764][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 105.304033][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.304351][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 105.304603][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 105.304935][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 105.305195][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.305451][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 105.305733][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.306026][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 105.306306][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 105.306613][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 105.306880][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 105.307195][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 105.307466][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 105.307736][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 105.308038][ T11] kthread (kernel/kthread.c:388) 
[ 105.308278][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.308541][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 105.308795][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.309064][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  105.473563][   T11] ------------[ cut here ]------------
| [  105.474114][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 105.474713][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  105.475547][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  105.476907][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  105.477973][   T11] Workqueue: netns cleanup_net
[ 105.478406][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.478914][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  105.480451][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  105.480983][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  105.481690][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  105.482405][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  105.483114][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a872628
[  105.483829][   T11] R13: ffff88800a872df8 R14: ffffc900000bfc98 R15: ffff88800a872bc0
[  105.484555][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  105.485357][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.485938][   T11] CR2: 00007fbacdfd2000 CR3: 0000000024134002 CR4: 00000000001706f0
[  105.486650][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.487367][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.488047][   T11] Call Trace:
[  105.488363][   T11]  <TASK>
[ 105.488618][ T11] ? __warn (kernel/panic.c:677) 
[ 105.488944][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 105.489337][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.489751][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.490133][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 105.490496][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 105.490871][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 105.491283][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 105.491641][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.492068][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 105.492439][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 105.492860][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 105.493247][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.493651][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 105.494071][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.494438][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 105.494851][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 105.495262][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 105.495627][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 105.496067][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 105.496440][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 105.496820][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 105.497344][ T11] kthread (kernel/kthread.c:388) 
[ 105.497671][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.498063][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 105.498433][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.498813][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  105.661298][   T11] ------------[ cut here ]------------
| [  105.661651][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 105.662076][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  105.662588][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  105.663580][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  105.664303][   T11] Workqueue: netns cleanup_net
[ 105.664606][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.664921][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  105.665949][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  105.666282][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  105.666704][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  105.667131][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  105.667608][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800990a628
[  105.668101][   T11] R13: ffff88800990adf8 R14: ffffc900000bfc98 R15: ffff88800990abc0
[  105.668516][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  105.668983][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.669350][   T11] CR2: 00007f6c50525000 CR3: 0000000024134004 CR4: 00000000001706f0
[  105.669765][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.670184][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.670608][   T11] Call Trace:
[  105.670781][   T11]  <TASK>
[ 105.670938][ T11] ? __warn (kernel/panic.c:677) 
[ 105.671161][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 105.671461][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.671739][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.672027][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 105.672274][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 105.672561][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 105.672830][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 105.673081][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.673363][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 105.673648][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 105.673977][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 105.674231][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.674521][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 105.674896][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.675333][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 105.675739][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 105.676134][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 105.676551][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 105.677050][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 105.677468][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 105.677885][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 105.678343][ T11] kthread (kernel/kthread.c:388) 
[ 105.678732][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.679164][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 105.679554][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.679936][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  105.846377][   T11] ------------[ cut here ]------------
| [  105.846742][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 105.847160][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  105.847716][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  105.848585][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  105.849234][   T11] Workqueue: netns cleanup_net
[ 105.849493][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.849800][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  105.850985][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  105.851305][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  105.851756][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  105.852269][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  105.852693][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888002d8a628
[  105.853173][   T11] R13: ffff888002d8adf8 R14: ffffc900000bfc98 R15: ffff888002d8abc0
[  105.853616][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  105.854174][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.854545][   T11] CR2: 00007ff3346c42a8 CR3: 0000000024134003 CR4: 00000000001706f0
[  105.855033][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.855496][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.855975][   T11] Call Trace:
[  105.856179][   T11]  <TASK>
[ 105.856357][ T11] ? __warn (kernel/panic.c:677) 
[ 105.856588][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 105.856899][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.857201][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.857448][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 105.857679][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 105.857930][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 105.858210][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 105.858447][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 105.858721][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 105.858992][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 105.859313][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 105.859577][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.859848][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 105.860164][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 105.860449][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 105.860754][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 105.861063][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 105.861340][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 105.861650][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 105.861922][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 105.862202][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 105.862522][ T11] kthread (kernel/kthread.c:388) 
[ 105.862742][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.863043][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 105.863295][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 105.863573][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  125.342705][   T11] ------------[ cut here ]------------
| [  125.343030][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 125.343431][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  125.343954][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  125.344905][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  125.345606][   T11] Workqueue: netns cleanup_net
[ 125.345912][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.346267][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  125.347340][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  125.347702][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  125.348158][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  125.348622][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  125.349085][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006732628
[  125.349542][   T11] R13: ffff888006732df8 R14: ffffc900000bfc98 R15: ffff888006732bc0
[  125.349993][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  125.350530][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  125.350925][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa003 CR4: 00000000001706f0
[  125.351396][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  125.351840][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  125.352303][   T11] Call Trace:
[  125.352523][   T11]  <TASK>
[ 125.352715][ T11] ? __warn (kernel/panic.c:677) 
[ 125.352978][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 125.353269][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.353594][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 125.353871][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 125.354147][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 125.354440][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 125.354772][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 125.355076][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.355399][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 125.355682][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 125.356031][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 125.356326][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.356615][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 125.356931][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.357242][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 125.357568][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 125.357854][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 125.358119][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 125.358417][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 125.358682][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 125.358948][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 125.359246][ T11] kthread (kernel/kthread.c:388) 
[ 125.359484][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.359759][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 125.360019][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.360283][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  125.528068][   T11] ------------[ cut here ]------------
| [  125.528387][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 125.528771][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  125.529316][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  125.530353][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  125.531099][   T11] Workqueue: netns cleanup_net
[ 125.531366][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.531684][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  125.532866][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  125.533234][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  125.533722][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  125.534188][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  125.534667][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880066e2628
[  125.535157][   T11] R13: ffff8880066e2df8 R14: ffffc900000bfc98 R15: ffff8880066e2bc0
[  125.535630][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  125.536155][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  125.536548][   T11] CR2: 00007f979311b270 CR3: 0000000024134003 CR4: 00000000001706f0
[  125.537020][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  125.537453][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  125.537869][   T11] Call Trace:
[  125.538053][   T11]  <TASK>
[ 125.538217][ T11] ? __warn (kernel/panic.c:677) 
[ 125.538440][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 125.538696][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.538993][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 125.539264][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 125.539545][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 125.539804][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 125.540130][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 125.540404][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.540700][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 125.541001][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 125.541300][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 125.541592][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.541864][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 125.542146][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.542440][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 125.542736][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 125.543007][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 125.543247][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 125.543529][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 125.543771][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 125.544030][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 125.544300][ T11] kthread (kernel/kthread.c:388) 
[ 125.544517][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.544788][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 125.545057][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.545325][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  125.697025][   T11] ------------[ cut here ]------------
| [  125.697380][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 125.697811][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  125.698369][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  125.699333][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  125.700071][   T11] Workqueue: netns cleanup_net
[ 125.700348][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.700682][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  125.701815][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  125.702147][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  125.702574][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  125.702997][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  125.703419][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800943a628
[  125.703874][   T11] R13: ffff88800943adf8 R14: ffffc900000bfc98 R15: ffff88800943abc0
[  125.704350][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  125.704903][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  125.705288][   T11] CR2: 00007f6baaf56270 CR3: 0000000024134003 CR4: 00000000001706f0
[  125.705772][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  125.706255][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  125.706736][   T11] Call Trace:
[  125.706952][   T11]  <TASK>
[ 125.707160][ T11] ? __warn (kernel/panic.c:677) 
[ 125.707417][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 125.707717][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.708056][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 125.708341][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 125.708608][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 125.708899][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 125.709207][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 125.709498][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.709826][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 125.710122][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 125.710439][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 125.710707][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.711017][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 125.711323][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.711600][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 125.711897][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 125.712174][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 125.712431][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 125.712729][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 125.712986][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 125.713241][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 125.713517][ T11] kthread (kernel/kthread.c:388) 
[ 125.713735][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.714040][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 125.714299][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.714587][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  125.856190][   T11] ------------[ cut here ]------------
| [  125.856548][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 125.857039][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  125.857588][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  125.858594][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  125.859300][   T11] Workqueue: netns cleanup_net
[ 125.859609][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.859978][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  125.861110][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  125.861455][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  125.861870][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  125.862356][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  125.862838][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800832a628
[  125.863336][   T11] R13: ffff88800832adf8 R14: ffffc900000bfc98 R15: ffff88800832abc0
[  125.863797][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  125.864359][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  125.864732][   T11] CR2: 00007fd175366000 CR3: 0000000024134006 CR4: 00000000001706f0
[  125.865158][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  125.865602][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  125.866050][   T11] Call Trace:
[  125.866226][   T11]  <TASK>
[ 125.866385][ T11] ? __warn (kernel/panic.c:677) 
[ 125.866667][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 125.867008][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.867296][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 125.867608][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 125.867883][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 125.868203][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 125.868517][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 125.868784][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 125.869136][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 125.869412][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 125.869726][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 125.870040][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.870363][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 125.870664][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 125.870967][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 125.871344][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 125.871639][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 125.871913][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 125.872232][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 125.872562][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 125.872866][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 125.873174][ T11] kthread (kernel/kthread.c:388) 
[ 125.873447][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.873762][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 125.874030][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 125.874295][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  145.487324][   T11] ------------[ cut here ]------------
| [  145.487666][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 145.488110][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  145.488670][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  145.489641][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  145.490387][   T11] Workqueue: netns cleanup_net
[ 145.490645][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.491023][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  145.492093][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  145.492466][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  145.492915][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  145.493410][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  145.493902][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025932628
[  145.494364][   T11] R13: ffff888025932df8 R14: ffffc900000bfc98 R15: ffff888025932bc0
[  145.494817][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  145.495334][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.495727][   T11] CR2: 00007fd5371510e0 CR3: 0000000024134005 CR4: 00000000001706f0
[  145.496210][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  145.496676][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  145.497128][   T11] Call Trace:
[  145.497355][   T11]  <TASK>
[ 145.497525][ T11] ? __warn (kernel/panic.c:677) 
[ 145.497815][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 145.498118][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.498431][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 145.498677][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 145.498934][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 145.499214][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 145.499502][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 145.499748][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.500046][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 145.500336][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 145.500631][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 145.500939][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 145.501281][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 145.501607][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 145.501926][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 145.502292][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 145.502577][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 145.502886][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 145.503248][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 145.503563][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 145.503865][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 145.504218][ T11] kthread (kernel/kthread.c:388) 
[ 145.504461][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 145.504760][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 145.505067][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 145.505359][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  145.691343][   T11] ------------[ cut here ]------------
| [  145.691710][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 145.692155][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  145.692698][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  145.693704][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  145.694681][   T11] Workqueue: netns cleanup_net
[ 145.695148][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.695645][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  145.697203][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  145.697760][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  145.698450][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  145.699115][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  145.699784][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800990a628
[  145.700483][   T11] R13: ffff88800990adf8 R14: ffffc900000bfc98 R15: ffff88800990abc0
[  145.701187][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  145.701904][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.702435][   T11] CR2: 00007fe7f1bdc270 CR3: 0000000024134001 CR4: 00000000001706f0
[  145.702924][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  145.703347][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  145.703764][   T11] Call Trace:
[  145.703936][   T11]  <TASK>
[ 145.704098][ T11] ? __warn (kernel/panic.c:677) 
[ 145.704317][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 145.704593][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.704944][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 145.705240][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 145.705489][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 145.705786][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 145.706133][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 145.706426][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.706740][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 145.707055][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 145.707389][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 145.707671][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 145.707964][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 145.708268][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 145.708580][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 145.708896][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 145.709193][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 145.709469][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 145.709810][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 145.710108][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 145.710399][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 145.710733][ T11] kthread (kernel/kthread.c:388) 
[ 145.711006][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 145.711294][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 145.711574][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 145.711860][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  145.874087][   T11] ------------[ cut here ]------------
| [  145.874414][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 145.874841][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  145.875414][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  145.876395][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  145.877096][   T11] Workqueue: netns cleanup_net
[ 145.877355][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.877667][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  145.878687][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  145.879017][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  145.879431][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  145.879871][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  145.880376][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a092628
[  145.880833][   T11] R13: ffff88800a092df8 R14: ffffc900000bfc98 R15: ffff88800a092bc0
[  145.881256][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  145.881816][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.882209][   T11] CR2: 00007f0406749270 CR3: 0000000024134001 CR4: 00000000001706f0
[  145.882710][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  145.883179][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  145.883673][   T11] Call Trace:
[  145.883884][   T11]  <TASK>
[ 145.884075][ T11] ? __warn (kernel/panic.c:677) 
[ 145.884317][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 145.884593][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.884913][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 145.885209][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 145.885467][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 145.885747][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 145.886093][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 145.886343][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 145.886686][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 145.886953][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 145.887243][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 145.887479][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 145.887730][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 145.888000][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 145.888248][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 145.888518][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 145.888782][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 145.889045][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 145.889358][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 145.889635][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 145.889920][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 145.890220][ T11] kthread (kernel/kthread.c:388) 
[ 145.890469][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 145.890747][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 145.891023][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 145.891281][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  146.071091][   T11] ------------[ cut here ]------------
| [  146.071400][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 146.071771][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  146.072267][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  146.073305][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  146.074053][   T11] Workqueue: netns cleanup_net
[ 146.074311][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 146.074705][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  146.075765][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  146.076091][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  146.076514][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  146.076964][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  146.077476][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009992628
[  146.077987][   T11] R13: ffff888009992df8 R14: ffffc900000bfc98 R15: ffff888009992bc0
[  146.078492][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  146.079082][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  146.079483][   T11] CR2: 00007f2e3eae6270 CR3: 0000000024134002 CR4: 00000000001706f0
[  146.080013][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  146.080480][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  146.081027][   T11] Call Trace:
[  146.081225][   T11]  <TASK>
[ 146.081394][ T11] ? __warn (kernel/panic.c:677) 
[ 146.081684][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 146.081997][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 146.082331][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 146.082627][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 146.082902][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 146.083201][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 146.083521][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 146.083811][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 146.084150][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 146.084442][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 146.084758][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 146.085063][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 146.085356][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 146.085696][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 146.085985][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 146.086331][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 146.086600][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 146.086844][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 146.087135][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 146.087381][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 146.087635][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 146.087908][ T11] kthread (kernel/kthread.c:388) 
[ 146.088157][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 146.088452][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 146.088762][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 146.089086][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  166.661413][   T11] ------------[ cut here ]------------
| [  166.661750][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 166.662144][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  166.662660][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  166.663542][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  166.664259][   T11] Workqueue: netns cleanup_net
[ 166.664575][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 166.664933][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  166.665978][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  166.666364][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  166.666855][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  166.667344][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  166.667797][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800604a628
[  166.668317][   T11] R13: ffff88800604adf8 R14: ffffc900000bfc98 R15: ffff88800604abc0
[  166.668775][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  166.669326][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  166.669724][   T11] CR2: 00007f11fc265000 CR3: 0000000024134005 CR4: 00000000001706f0
[  166.670259][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  166.670737][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  166.671234][   T11] Call Trace:
[  166.671449][   T11]  <TASK>
[ 166.671615][ T11] ? __warn (kernel/panic.c:677) 
[ 166.671873][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 166.672154][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 166.672481][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 166.672808][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 166.673058][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 166.673333][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 166.673656][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 166.673920][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 166.674208][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 166.674467][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 166.674764][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 166.675014][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 166.675265][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 166.675528][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 166.675795][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 166.676075][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 166.676338][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 166.676602][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 166.676937][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 166.677259][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 166.677528][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 166.677890][ T11] kthread (kernel/kthread.c:388) 
[ 166.678144][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 166.678414][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 166.678679][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 166.679015][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  166.848299][   T11] ------------[ cut here ]------------
| [  166.848646][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 166.849066][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  166.849551][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  166.850444][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  166.851111][   T11] Workqueue: netns cleanup_net
[ 166.851411][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 166.851779][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  166.852907][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  166.853267][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  166.853770][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  166.854279][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  166.854721][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006e4a628
[  166.855176][   T11] R13: ffff888006e4adf8 R14: ffffc900000bfc98 R15: ffff888006e4abc0
[  166.855623][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  166.856126][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  166.856501][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa006 CR4: 00000000001706f0
[  166.856974][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  166.857486][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  166.857998][   T11] Call Trace:
[  166.858225][   T11]  <TASK>
[ 166.858418][ T11] ? __warn (kernel/panic.c:677) 
[ 166.858659][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 166.858984][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 166.859303][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 166.859557][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 166.859844][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 166.860131][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 166.860435][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 166.860702][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 166.861009][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 166.861281][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 166.861588][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 166.861840][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 166.862109][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 166.862408][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 166.862677][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 166.862995][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 166.863291][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 166.863562][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 166.863871][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 166.864161][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 166.864430][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 166.864727][ T11] kthread (kernel/kthread.c:388) 
[ 166.864979][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 166.865243][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 166.865512][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 166.865785][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  167.038270][   T11] ------------[ cut here ]------------
| [  167.038580][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 167.038998][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  167.039487][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  167.040493][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  167.041237][   T11] Workqueue: netns cleanup_net
[ 167.041497][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 167.041805][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  167.042972][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  167.043358][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  167.043856][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  167.044342][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  167.044864][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888004b3a628
[  167.045373][   T11] R13: ffff888004b3adf8 R14: ffffc900000bfc98 R15: ffff888004b3abc0
[  167.045877][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  167.046413][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  167.046840][   T11] CR2: 00007fe200457000 CR3: 0000000024134005 CR4: 00000000001706f0
[  167.047324][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  167.047829][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  167.048308][   T11] Call Trace:
[  167.048519][   T11]  <TASK>
[ 167.048712][ T11] ? __warn (kernel/panic.c:677) 
[ 167.049006][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 167.049283][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 167.049523][ T11] ? restore_regs_and_return_to_kernel (arch/x86/entry/entry_64.S:658) 
[ 167.049856][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 167.050131][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 167.050380][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 167.050644][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 167.050878][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 167.051202][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 167.051484][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 167.051796][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 167.052087][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 167.052429][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 167.052704][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 167.053024][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 167.053369][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 167.053685][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 167.053953][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 167.054295][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 167.054592][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 167.054888][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 167.055193][ T11] kthread (kernel/kthread.c:388) 
[ 167.055489][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 167.055759][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 167.056034][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 167.056338][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  167.221809][   T11] ------------[ cut here ]------------
| [  167.222153][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 167.222562][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  167.223143][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  167.224072][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  167.224759][   T11] Workqueue: netns cleanup_net
[ 167.225052][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 167.225396][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  167.226589][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  167.226990][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  167.227429][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  167.227932][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  167.228388][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880094fa628
[  167.228878][   T11] R13: ffff8880094fadf8 R14: ffffc900000bfc98 R15: ffff8880094fabc0
[  167.229345][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  167.229856][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  167.230266][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[  167.230742][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  167.231186][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  167.231662][   T11] Call Trace:
[  167.231857][   T11]  <TASK>
[ 167.232043][ T11] ? __warn (kernel/panic.c:677) 
[ 167.232289][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 167.232570][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 167.232898][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 167.233176][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 167.233445][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 167.233718][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 167.234011][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 167.234249][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 167.234528][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 167.234779][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 167.235066][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 167.235306][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 167.235566][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 167.235854][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 167.236148][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 167.236457][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 167.236743][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 167.237015][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 167.237343][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 167.237612][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 167.237891][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 167.238203][ T11] kthread (kernel/kthread.c:388) 
[ 167.238452][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 167.238717][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 167.238998][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 167.239245][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  187.841653][   T11] ------------[ cut here ]------------
| [  187.841970][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 187.842378][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  187.842930][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  187.843909][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  187.844567][   T11] Workqueue: netns cleanup_net
[ 187.844851][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 187.845212][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  187.846241][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  187.846563][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  187.846990][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  187.847413][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  187.847830][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880068b2628
[  187.848258][   T11] R13: ffff8880068b2df8 R14: ffffc900000bfc98 R15: ffff8880068b2bc0
[  187.848677][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  187.849154][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  187.849501][   T11] CR2: 00007fd53734f7f0 CR3: 0000000024134001 CR4: 00000000001706f0
[  187.849919][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  187.850415][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  187.850906][   T11] Call Trace:
[  187.851090][   T11]  <TASK>
[ 187.851277][ T11] ? __warn (kernel/panic.c:677) 
[ 187.851513][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 187.851805][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 187.852141][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 187.852424][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 187.852705][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 187.852955][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 187.853237][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 187.853473][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 187.853763][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 187.854023][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 187.854305][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 187.854544][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 187.854801][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 187.855070][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 187.855321][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 187.855712][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 187.856019][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 187.856300][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 187.856659][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 187.856902][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 187.857228][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 187.857549][ T11] kthread (kernel/kthread.c:388) 
[ 187.857830][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 187.858239][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 187.858643][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 187.859070][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  188.045251][   T11] ------------[ cut here ]------------
| [  188.045600][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 188.046039][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  188.046561][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  188.047497][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  188.048221][   T11] Workqueue: netns cleanup_net
[ 188.048482][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.048789][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  188.049823][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  188.050264][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  188.050680][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  188.051107][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  188.051588][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a512628
[  188.052041][   T11] R13: ffff88800a512df8 R14: ffffc900000bfc98 R15: ffff88800a512bc0
[  188.052486][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  188.052993][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  188.053362][   T11] CR2: 00007f4e907b7000 CR3: 0000000024134005 CR4: 00000000001706f0
[  188.053803][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  188.054295][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  188.054799][   T11] Call Trace:
[  188.055018][   T11]  <TASK>
[ 188.055222][ T11] ? __warn (kernel/panic.c:677) 
[ 188.055466][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 188.055725][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.056066][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 188.056333][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 188.056583][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 188.056859][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 188.057163][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 188.057426][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.057742][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 188.058035][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 188.058341][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 188.058607][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 188.058899][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 188.059210][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 188.059494][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 188.059821][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 188.060140][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 188.060456][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 188.060777][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 188.061057][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 188.061362][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 188.061685][ T11] kthread (kernel/kthread.c:388) 
[ 188.061930][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 188.062249][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 188.062524][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 188.062823][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  188.259952][   T11] ------------[ cut here ]------------
| [  188.260477][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 188.261040][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  188.261749][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  188.263073][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  188.264056][   T11] Workqueue: netns cleanup_net
[ 188.264512][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.265003][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  188.266193][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  188.266559][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  188.267067][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  188.267706][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  188.268218][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800832a628
[  188.268686][   T11] R13: ffff88800832adf8 R14: ffffc900000bfc98 R15: ffff88800832abc0
[  188.269159][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  188.269732][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  188.270144][   T11] CR2: 00007ff27526f000 CR3: 0000000024134001 CR4: 00000000001706f0
[  188.270627][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  188.271188][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  188.271639][   T11] Call Trace:
[  188.271860][   T11]  <TASK>
[ 188.272030][ T11] ? __warn (kernel/panic.c:677) 
[ 188.272258][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 188.272521][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.272796][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 188.273060][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 188.273295][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 188.273543][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 188.273814][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 188.274112][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.274418][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 188.274757][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 188.275073][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 188.275384][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 188.275656][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 188.275977][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 188.276311][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 188.276612][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 188.276954][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 188.277261][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 188.277606][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 188.277899][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 188.278221][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 188.278545][ T11] kthread (kernel/kthread.c:388) 
[ 188.278825][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 188.279148][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 188.279443][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 188.279728][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  188.469344][   T11] ------------[ cut here ]------------
| [  188.469838][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 188.470483][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  188.471329][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  188.472653][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  188.473789][   T11] Workqueue: netns cleanup_net
[ 188.474229][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.474769][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  188.476496][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  188.477063][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  188.477791][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  188.478513][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  188.479154][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008002628
[  188.479779][   T11] R13: ffff888008002df8 R14: ffffc900000bfc98 R15: ffff888008002bc0
[  188.480446][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  188.481266][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  188.481873][   T11] CR2: 00007ff27526f000 CR3: 0000000024134001 CR4: 00000000001706f0
[  188.482613][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  188.483367][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  188.484112][   T11] Call Trace:
[  188.484436][   T11]  <TASK>
[ 188.484707][ T11] ? __warn (kernel/panic.c:677) 
[ 188.485131][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 188.485574][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.486098][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 188.486533][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 188.486920][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 188.487387][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 188.487839][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 188.488298][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 188.488768][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 188.489241][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 188.489726][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 188.490143][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 188.490525][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 188.490918][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 188.491302][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 188.491733][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 188.492206][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 188.492568][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 188.493006][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 188.493374][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 188.493755][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 188.494183][ T11] kthread (kernel/kthread.c:388) 
[ 188.494555][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 188.494990][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 188.495367][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 188.495725][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  210.739257][   T11] ------------[ cut here ]------------
| [  210.739582][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 210.739983][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  210.740526][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  210.741488][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  210.742824][   T11] Workqueue: netns cleanup_net
[ 210.743143][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 210.743453][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  210.744562][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  210.744956][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  210.745435][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  210.745894][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  210.746352][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880094ca628
[  210.746843][   T11] R13: ffff8880094cadf8 R14: ffffc900000bfc98 R15: ffff8880094cabc0
[  210.747345][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  210.747864][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  210.748251][   T11] CR2: 00007f4bf94ff270 CR3: 000000000a648001 CR4: 00000000001706f0
[  210.748714][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  210.749187][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  210.749654][   T11] Call Trace:
[  210.749871][   T11]  <TASK>
[ 210.750039][ T11] ? __warn (kernel/panic.c:677) 
[ 210.750310][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 210.750650][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 210.750939][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 210.751219][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 210.751516][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 210.751848][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 210.752146][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 210.752450][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 210.752757][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 210.753103][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 210.753381][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 210.753662][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 210.753981][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 210.754285][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 210.754600][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 210.754891][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 210.755193][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 210.755535][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 210.755824][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 210.756121][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 210.756445][ T11] kthread (kernel/kthread.c:388) 
[ 210.756721][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 210.757029][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 210.757297][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 210.757592][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  210.934164][   T11] ------------[ cut here ]------------
| [  210.934487][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 210.934893][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  210.935440][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  210.936419][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  210.937088][   T11] Workqueue: netns cleanup_net
[ 210.937348][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 210.937656][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  210.938675][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  210.939003][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  210.939427][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  210.939892][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  210.940360][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006702628
[  210.940826][   T11] R13: ffff888006702df8 R14: ffffc900000bfc98 R15: ffff888006702bc0
[  210.941279][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  210.941802][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  210.942202][   T11] CR2: 00007f3f984a1000 CR3: 0000000024134004 CR4: 00000000001706f0
[  210.942654][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  210.943162][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  210.943611][   T11] Call Trace:
[  210.943815][   T11]  <TASK>
[ 210.944003][ T11] ? __warn (kernel/panic.c:677) 
[ 210.944247][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 210.944531][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 210.944830][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 210.945106][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 210.945388][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 210.945641][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 210.945968][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 210.946204][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 210.946483][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 210.946735][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 210.947020][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 210.947260][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 210.947512][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 210.947773][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 210.948028][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 210.948305][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 210.948567][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 210.948815][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 210.949111][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 210.949389][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 210.949662][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 210.949990][ T11] kthread (kernel/kthread.c:388) 
[ 210.950217][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 210.950502][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 210.950783][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 210.951051][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  211.124373][   T11] ------------[ cut here ]------------
| [  211.124720][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 211.125155][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  211.125739][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  211.126825][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  211.127535][   T11] Workqueue: netns cleanup_net
[ 211.127797][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 211.128158][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  211.129229][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  211.129589][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  211.130089][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  211.130542][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  211.131009][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880068f2628
[  211.131464][   T11] R13: ffff8880068f2df8 R14: ffffc900000bfc98 R15: ffff8880068f2bc0
[  211.131908][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  211.132426][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  211.132821][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa004 CR4: 00000000001706f0
[  211.133282][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  211.133726][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  211.134185][   T11] Call Trace:
[  211.134376][   T11]  <TASK>
[ 211.134566][ T11] ? __warn (kernel/panic.c:677) 
[ 211.134821][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 211.135117][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 211.135432][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 211.135723][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 211.136003][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 211.136278][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 211.136584][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 211.136863][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 211.137188][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 211.137460][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 211.137783][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 211.138068][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 211.138351][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 211.138640][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 211.138928][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 211.139257][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 211.139557][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 211.139829][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 211.140183][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 211.140479][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 211.140772][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 211.141077][ T11] kthread (kernel/kthread.c:388) 
[ 211.141294][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 211.141543][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 211.141781][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 211.142029][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  211.318022][   T11] ------------[ cut here ]------------
| [  211.318353][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 211.318735][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  211.319247][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  211.320158][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  211.320893][   T11] Workqueue: netns cleanup_net
[ 211.321164][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 211.321483][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  211.322596][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  211.322950][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  211.323415][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  211.323887][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  211.324360][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880064b2628
[  211.324821][   T11] R13: ffff8880064b2df8 R14: ffffc900000bfc98 R15: ffff8880064b2bc0
[  211.325273][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  211.325800][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  211.326196][   T11] CR2: 00007fc2e5967000 CR3: 0000000024134006 CR4: 00000000001706f0
[  211.326692][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  211.327159][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  211.327656][   T11] Call Trace:
[  211.327869][   T11]  <TASK>
[ 211.328045][ T11] ? __warn (kernel/panic.c:677) 
[ 211.328324][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 211.328661][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 211.328989][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 211.329295][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 211.329576][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 211.329885][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 211.330167][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 211.330407][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 211.330681][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 211.330932][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 211.331224][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 211.331460][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 211.331713][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 211.331983][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 211.332237][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 211.332510][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 211.332797][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 211.333107][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 211.333437][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 211.333720][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 211.334031][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 211.334376][ T11] kthread (kernel/kthread.c:388) 
[ 211.334631][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 211.334897][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 211.335163][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 211.335433][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  233.648133][   T11] ------------[ cut here ]------------
| [  233.648438][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 233.648807][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  233.649301][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  233.650280][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  233.650996][   T11] Workqueue: netns cleanup_net
[ 233.651290][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.651662][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  233.652854][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  233.653225][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  233.653668][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  233.654174][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  233.654638][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888003982628
[  233.655156][   T11] R13: ffff888003982df8 R14: ffffc900000bfc98 R15: ffff888003982bc0
[  233.655644][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  233.656158][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  233.656566][   T11] CR2: 00007fd53734f710 CR3: 0000000024134006 CR4: 00000000001706f0
[  233.657038][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  233.657522][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  233.658000][   T11] Call Trace:
[  233.658209][   T11]  <TASK>
[ 233.658368][ T11] ? __warn (kernel/panic.c:677) 
[ 233.658584][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 233.658846][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.659135][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 233.659379][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 233.659608][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 233.659869][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 233.660149][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 233.660428][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.660735][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 233.661025][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 233.661335][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 233.661641][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 233.661908][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 233.662245][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 233.662536][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 233.662840][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 233.663176][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 233.663437][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 233.663777][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 233.664058][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 233.664335][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 233.664666][ T11] kthread (kernel/kthread.c:388) 
[ 233.664893][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 233.665208][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 233.665472][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 233.665760][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  233.855638][   T11] ------------[ cut here ]------------
| [  233.856200][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 233.856592][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  233.857135][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  233.858028][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  233.858723][   T11] Workqueue: netns cleanup_net
[ 233.859038][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.859410][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  233.860711][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  233.861097][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  233.861622][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  233.862190][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  233.862682][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a652628
[  233.863210][   T11] R13: ffff88800a652df8 R14: ffffc900000bfc98 R15: ffff88800a652bc0
[  233.863690][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  233.864289][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  233.864722][   T11] CR2: 00007f929211f000 CR3: 0000000024134005 CR4: 00000000001706f0
[  233.865259][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  233.865771][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  233.866371][   T11] Call Trace:
[  233.866589][   T11]  <TASK>
[ 233.866768][ T11] ? __warn (kernel/panic.c:677) 
[ 233.867089][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 233.867389][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.867718][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 233.867977][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 233.868218][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 233.868472][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 233.868749][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 233.869010][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.869306][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 233.869564][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 233.869907][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 233.870217][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 233.870539][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 233.870888][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 233.871177][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 233.871536][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 233.871850][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 233.872116][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 233.872462][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 233.872773][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 233.873053][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 233.873386][ T11] kthread (kernel/kthread.c:388) 
[ 233.873653][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 233.873949][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 233.874252][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 233.874543][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  234.044712][   T11] ------------[ cut here ]------------
| [  234.045109][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 234.045517][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  234.046015][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  234.046879][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  234.047528][   T11] Workqueue: netns cleanup_net
[ 234.047789][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 234.048109][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  234.049287][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  234.049642][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  234.050137][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  234.050589][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  234.051107][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006142628
[  234.051594][   T11] R13: ffff888006142df8 R14: ffffc900000bfc98 R15: ffff888006142bc0
[  234.052064][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  234.052629][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  234.053020][   T11] CR2: 00007f433c5ee000 CR3: 0000000024134001 CR4: 00000000001706f0
[  234.053525][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  234.054007][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  234.054495][   T11] Call Trace:
[  234.054715][   T11]  <TASK>
[ 234.054893][ T11] ? __warn (kernel/panic.c:677) 
[ 234.055133][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 234.055420][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 234.055759][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 234.056013][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 234.056248][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 234.056496][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 234.056767][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 234.057012][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 234.057294][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 234.057547][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 234.057828][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 234.058076][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 234.058328][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 234.058631][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 234.058918][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 234.059242][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 234.059533][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 234.059855][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 234.060162][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 234.060474][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 234.060750][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 234.061076][ T11] kthread (kernel/kthread.c:388) 
[ 234.061332][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 234.061619][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 234.061892][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 234.062214][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  234.242313][   T11] ------------[ cut here ]------------
| [  234.242683][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 234.243170][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  234.243727][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  234.244836][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  234.245487][   T11] Workqueue: netns cleanup_net
[ 234.245746][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 234.246068][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  234.247094][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  234.247413][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  234.247825][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  234.248321][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  234.248830][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880063f2628
[  234.249436][   T11] R13: ffff8880063f2df8 R14: ffffc900000bfc98 R15: ffff8880063f2bc0
[  234.250071][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  234.250832][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  234.251435][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa001 CR4: 00000000001706f0
[  234.252130][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  234.252791][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  234.253481][   T11] Call Trace:
[  234.253806][   T11]  <TASK>
[ 234.254100][ T11] ? __warn (kernel/panic.c:677) 
[ 234.254470][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 234.254901][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 234.255399][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 234.255818][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 234.256221][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 234.256649][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 234.257138][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 234.257557][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 234.258030][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 234.258482][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 234.258995][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 234.259411][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 234.259724][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 234.260089][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 234.260407][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 234.260735][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 234.261042][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 234.261347][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 234.261693][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 234.262024][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 234.262308][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 234.262636][ T11] kthread (kernel/kthread.c:388) 
[ 234.262928][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 234.263229][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 234.263500][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 234.263811][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  256.608058][   T11] ------------[ cut here ]------------
| [  256.608519][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 256.609112][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  256.609857][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  256.611196][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  256.612242][   T11] Workqueue: netns cleanup_net
[ 256.612712][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 256.613224][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  256.614808][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  256.615312][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  256.615973][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  256.616751][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  256.617472][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b012628
[  256.618222][   T11] R13: ffff88800b012df8 R14: ffffc900000bfc98 R15: ffff88800b012bc0
[  256.618927][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  256.619759][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  256.620154][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa003 CR4: 00000000001706f0
[  256.620654][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  256.621154][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  256.621652][   T11] Call Trace:
[  256.621869][   T11]  <TASK>
[ 256.622053][ T11] ? __warn (kernel/panic.c:677) 
[ 256.622308][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 256.622611][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 256.622922][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 256.623214][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 256.623496][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 256.623748][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 256.624025][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 256.624265][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 256.624537][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 256.624783][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 256.625072][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 256.625309][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 256.625563][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 256.625900][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 256.626227][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 256.626553][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 256.626877][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 256.627202][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 256.627535][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 256.627827][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 256.628132][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 256.628472][ T11] kthread (kernel/kthread.c:388) 
[ 256.628732][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 256.629023][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 256.629300][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 256.629580][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  256.796319][   T11] ------------[ cut here ]------------
| [  256.796644][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 256.797033][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  256.797521][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  256.798406][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  256.799161][   T11] Workqueue: netns cleanup_net
[ 256.799426][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 256.799771][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  256.800888][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  256.801254][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  256.801708][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  256.802170][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  256.802659][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880065a2628
[  256.803134][   T11] R13: ffff8880065a2df8 R14: ffffc900000bfc98 R15: ffff8880065a2bc0
[  256.803586][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  256.804109][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  256.804495][   T11] CR2: 00007fe51a345000 CR3: 0000000024134003 CR4: 00000000001706f0
[  256.804977][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  256.805442][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  256.805894][   T11] Call Trace:
[  256.806082][   T11]  <TASK>
[ 256.806278][ T11] ? __warn (kernel/panic.c:677) 
[ 256.806502][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 256.806809][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 256.807098][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 256.807376][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 256.807609][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 256.807910][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 256.808193][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 256.808429][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 256.808725][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 256.808986][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 256.809264][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 256.809504][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 256.809765][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 256.810036][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 256.810282][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 256.810554][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 256.810819][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 256.811070][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 256.811403][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 256.811708][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 256.812006][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 256.812313][ T11] kthread (kernel/kthread.c:388) 
[ 256.812581][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 256.812828][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 256.813071][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 256.813364][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  257.009173][   T11] ------------[ cut here ]------------
| [  257.009482][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 257.009872][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  257.010368][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  257.011239][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  257.012039][   T11] Workqueue: netns cleanup_net
[ 257.012300][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 257.012610][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  257.013681][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  257.014025][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  257.014446][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  257.014859][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  257.015326][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009b5a628
[  257.015827][   T11] R13: ffff888009b5adf8 R14: ffffc900000bfc98 R15: ffff888009b5abc0
[  257.016330][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  257.016829][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  257.017247][   T11] CR2: 00007f99aa1b1000 CR3: 0000000024134006 CR4: 00000000001706f0
[  257.017706][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  257.018215][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  257.018714][   T11] Call Trace:
[  257.018900][   T11]  <TASK>
[ 257.019102][ T11] ? __warn (kernel/panic.c:677) 
[ 257.019370][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 257.019678][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 257.019990][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 257.020306][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 257.020554][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 257.020865][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 257.021186][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 257.021452][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 257.021787][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 257.022062][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 257.022419][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 257.022699][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 257.022993][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 257.023297][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 257.023560][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 257.023833][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 257.024104][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 257.024348][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 257.024640][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 257.024887][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 257.025185][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 257.025489][ T11] kthread (kernel/kthread.c:388) 
[ 257.025747][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 257.026034][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 257.026314][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 257.026588][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  257.207781][   T11] ------------[ cut here ]------------
| [  257.208244][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 257.208680][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  257.209317][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  257.210645][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  257.211620][   T11] Workqueue: netns cleanup_net
[ 257.212017][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 257.212477][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  257.214155][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  257.214684][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  257.215443][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  257.216213][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  257.216974][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009d7a628
[  257.217640][   T11] R13: ffff888009d7adf8 R14: ffffc900000bfc98 R15: ffff888009d7abc0
[  257.218347][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  257.219129][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  257.219590][   T11] CR2: 00007f99aa250028 CR3: 0000000024134005 CR4: 00000000001706f0
[  257.220127][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  257.220638][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  257.221072][   T11] Call Trace:
[  257.221327][   T11]  <TASK>
[ 257.221536][ T11] ? __warn (kernel/panic.c:677) 
[ 257.221796][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 257.222058][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 257.222338][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 257.222579][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 257.222806][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 257.223065][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 257.223338][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 257.223572][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 257.223847][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 257.224099][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 257.224384][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 257.224622][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 257.224870][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 257.225160][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 257.225461][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 257.225806][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 257.226127][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 257.226390][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 257.226729][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 257.227023][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 257.227280][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 257.227593][ T11] kthread (kernel/kthread.c:388) 
[ 257.227805][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 257.228086][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 257.228369][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 257.228649][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  279.671387][   T11] ------------[ cut here ]------------
| [  279.671747][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 279.672192][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  279.672715][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  279.673685][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  279.674383][   T11] Workqueue: netns cleanup_net
[ 279.674685][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 279.675028][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  279.676111][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  279.676491][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  279.676969][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  279.677414][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  279.677879][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a86a628
[  279.678350][   T11] R13: ffff88800a86adf8 R14: ffffc900000bfc98 R15: ffff88800a86abc0
[  279.678811][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  279.679287][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  279.679648][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134003 CR4: 00000000001706f0
[  279.680076][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  279.680492][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  279.680907][   T11] Call Trace:
[  279.681089][   T11]  <TASK>
[ 279.681247][ T11] ? __warn (kernel/panic.c:677) 
[ 279.681464][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 279.681761][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 279.682096][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 279.682364][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 279.682619][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 279.682904][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 279.683204][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 279.683490][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 279.683806][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 279.684094][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 279.684396][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 279.684653][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 279.684925][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 279.685248][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 279.685533][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 279.685838][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 279.686155][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 279.686451][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 279.686768][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 279.687047][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 279.687332][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 279.687650][ T11] kthread (kernel/kthread.c:388) 
[ 279.687910][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 279.688181][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 279.688436][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 279.688703][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  279.875154][   T11] ------------[ cut here ]------------
| [  279.875492][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 279.875913][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  279.876456][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  279.877372][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  279.878024][   T11] Workqueue: netns cleanup_net
[ 279.878287][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 279.878609][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  279.879660][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  279.880026][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  279.880499][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  279.880936][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  279.881430][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007a22628
[  279.881875][   T11] R13: ffff888007a22df8 R14: ffffc900000bfc98 R15: ffff888007a22bc0
[  279.882342][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  279.882858][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  279.883248][   T11] CR2: 00007f4ebeedf270 CR3: 0000000024134001 CR4: 00000000001706f0
[  279.883708][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  279.884165][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  279.884632][   T11] Call Trace:
[  279.884822][   T11]  <TASK>
[ 279.884992][ T11] ? __warn (kernel/panic.c:677) 
[ 279.885254][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 279.885536][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 279.885841][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 279.886117][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 279.886374][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 279.886644][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 279.886980][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 279.887232][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 279.887560][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 279.887830][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 279.888130][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 279.888374][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 279.888627][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 279.888897][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 279.889159][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 279.889442][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 279.889721][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 279.889981][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 279.890270][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 279.890512][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 279.890765][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 279.891047][ T11] kthread (kernel/kthread.c:388) 
[ 279.891264][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 279.891510][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 279.891743][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 279.891999][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  280.061135][   T11] ------------[ cut here ]------------
| [  280.061487][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 280.061881][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  280.062427][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  280.063402][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  280.064113][   T11] Workqueue: netns cleanup_net
[ 280.064374][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 280.064687][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  280.065716][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  280.066045][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  280.066466][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  280.066976][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  280.067433][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880258da628
[  280.067850][   T11] R13: ffff8880258dadf8 R14: ffffc900000bfc98 R15: ffff8880258dabc0
[  280.068348][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  280.068869][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  280.069245][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[  280.069724][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  280.070173][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  280.070596][   T11] Call Trace:
[  280.070774][   T11]  <TASK>
[ 280.070934][ T11] ? __warn (kernel/panic.c:677) 
[ 280.071161][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 280.071441][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 280.071750][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 280.072030][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 280.072289][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 280.072586][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 280.072883][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 280.073155][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 280.073463][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 280.073734][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 280.074063][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 280.074329][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 280.074599][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 280.074890][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 280.075185][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 280.075483][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 280.075763][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 280.076059][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 280.076357][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 280.076642][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 280.076928][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 280.077236][ T11] kthread (kernel/kthread.c:388) 
[ 280.077497][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 280.077750][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 280.078039][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 280.078303][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  280.246203][   T11] ------------[ cut here ]------------
| [  280.246525][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 280.246987][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  280.247516][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  280.248411][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  280.249093][   T11] Workqueue: netns cleanup_net
[ 280.249370][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 280.249721][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  280.250911][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  280.251280][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  280.251778][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  280.252281][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  280.252764][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025a02628
[  280.253304][   T11] R13: ffff888025a02df8 R14: ffffc900000bfc98 R15: ffff888025a02bc0
[  280.253805][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  280.254294][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  280.254643][   T11] CR2: 00007f8e3eaa8000 CR3: 0000000024134004 CR4: 00000000001706f0
[  280.255071][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  280.255487][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  280.255902][   T11] Call Trace:
[  280.256085][   T11]  <TASK>
[ 280.256243][ T11] ? __warn (kernel/panic.c:677) 
[ 280.256461][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 280.256741][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 280.256995][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 280.257231][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 280.257481][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 280.257754][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 280.257996][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 280.258273][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 280.258523][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 280.258812][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 280.259121][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 280.259400][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 280.259714][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 280.260005][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 280.260305][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 280.260617][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 280.260884][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 280.261219][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 280.261499][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 280.261775][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 280.262107][ T11] kthread (kernel/kthread.c:388) 
[ 280.262347][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 280.262597][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 280.262896][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 280.263164][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  298.374825][   T11] ------------[ cut here ]------------
| [  298.375191][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 298.375618][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  298.376182][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  298.377104][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  298.377813][   T11] Workqueue: netns cleanup_net
[ 298.378109][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.378504][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  298.379595][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  298.379915][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  298.380348][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  298.380768][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  298.381198][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007bfa628
[  298.381616][   T11] R13: ffff888007bfadf8 R14: ffffc900000bfc98 R15: ffff888007bfabc0
[  298.382045][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  298.382671][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  298.383094][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134005 CR4: 00000000001706f0
[  298.383516][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  298.383984][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  298.384423][   T11] Call Trace:
[  298.384618][   T11]  <TASK>
[ 298.384803][ T11] ? __warn (kernel/panic.c:677) 
[ 298.385049][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 298.385328][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.385634][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 298.385904][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 298.386161][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 298.386434][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 298.386727][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 298.386990][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.387321][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 298.387585][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 298.387894][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 298.388162][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.388411][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 298.388672][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.388925][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 298.389205][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 298.389497][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 298.389781][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 298.390029][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 298.390313][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 298.390605][ T11] kthread (kernel/kthread.c:388) 
[ 298.390846][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.391128][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 298.391392][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.391675][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  298.570217][   T11] ------------[ cut here ]------------
| [  298.570530][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 298.570916][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  298.571415][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  298.572385][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  298.573099][   T11] Workqueue: netns cleanup_net
[ 298.573457][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.573888][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  298.575311][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  298.575656][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  298.576077][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  298.576496][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  298.576917][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888004b4a628
[  298.577345][   T11] R13: ffff888004b4adf8 R14: ffffc900000bfc98 R15: ffff888004b4abc0
[  298.577786][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  298.578267][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  298.578642][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134005 CR4: 00000000001706f0
[  298.579149][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  298.579703][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  298.580187][   T11] Call Trace:
[  298.580374][   T11]  <TASK>
[ 298.580563][ T11] ? __warn (kernel/panic.c:677) 
[ 298.580806][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 298.581094][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.581404][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 298.581684][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 298.581923][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 298.582202][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 298.582526][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 298.582783][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.583121][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 298.583402][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 298.583722][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 298.584012][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.584278][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 298.584581][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.584856][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 298.585181][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 298.585493][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 298.585794][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 298.586098][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 298.586370][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 298.586668][ T11] kthread (kernel/kthread.c:388) 
[ 298.586917][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.587199][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 298.587439][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.587684][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  298.776116][   T11] ------------[ cut here ]------------
| [  298.776432][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 298.776809][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  298.777309][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  298.778271][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  298.779011][   T11] Workqueue: netns cleanup_net
[ 298.779270][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.779640][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  298.780772][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  298.781129][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  298.781608][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  298.782060][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  298.782527][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025aa2628
[  298.782986][   T11] R13: ffff888025aa2df8 R14: ffffc900000bfc98 R15: ffff888025aa2bc0
[  298.783453][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  298.783988][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  298.784362][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134005 CR4: 00000000001706f0
[  298.784827][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  298.785300][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  298.785751][   T11] Call Trace:
[  298.785964][   T11]  <TASK>
[ 298.786121][ T11] ? __warn (kernel/panic.c:677) 
[ 298.786341][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 298.786600][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.786876][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 298.787133][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 298.787365][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 298.787612][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 298.787882][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 298.788131][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.788434][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 298.788697][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 298.789034][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 298.789368][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.789729][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 298.790108][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.790464][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 298.790784][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 298.791067][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 298.791401][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 298.791683][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 298.792021][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 298.792342][ T11] kthread (kernel/kthread.c:388) 
[ 298.792570][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.792921][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 298.793269][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.793558][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  298.966150][   T11] ------------[ cut here ]------------
| [  298.966481][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 298.966880][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  298.967386][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  298.968267][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  298.968903][   T11] Workqueue: netns cleanup_net
[ 298.969189][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.969556][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  298.970615][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  298.970989][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  298.971411][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  298.971844][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  298.972289][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b0ca628
[  298.972704][   T11] R13: ffff88800b0cadf8 R14: ffffc900000bfc98 R15: ffff88800b0cabc0
[  298.973125][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  298.973589][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  298.973932][   T11] CR2: 00007fd6149f8000 CR3: 0000000024134002 CR4: 00000000001706f0
[  298.974395][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  298.974885][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  298.975393][   T11] Call Trace:
[  298.975593][   T11]  <TASK>
[ 298.975773][ T11] ? __warn (kernel/panic.c:677) 
[ 298.976015][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 298.976320][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.976630][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 298.976890][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 298.977157][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 298.977441][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 298.977733][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 298.977990][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 298.978307][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 298.978589][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 298.978901][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 298.979181][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.979481][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 298.979805][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 298.980085][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 298.980387][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 298.980708][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 298.981028][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 298.981300][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 298.981601][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 298.981898][ T11] kthread (kernel/kthread.c:388) 
[ 298.982135][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.982423][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 298.982704][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 298.982993][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  316.607360][   T11] ------------[ cut here ]------------
| [  316.607673][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 316.608069][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  316.608565][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  316.609491][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  316.610238][   T11] Workqueue: netns cleanup_net
[ 316.610591][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.610992][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  316.612301][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  316.612714][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  316.613273][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  316.613871][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  316.614480][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b58a628
[  316.615157][   T11] R13: ffff88800b58adf8 R14: ffffc900000bfc98 R15: ffff88800b58abc0
[  316.615811][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  316.616529][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  316.617071][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134001 CR4: 00000000001706f0
[  316.617720][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  316.618377][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  316.618968][   T11] Call Trace:
[  316.619173][   T11]  <TASK>
[ 316.619331][ T11] ? __warn (kernel/panic.c:677) 
[ 316.619593][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 316.619949][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.620399][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 316.620796][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 316.621090][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 316.621501][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 316.621880][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 316.622178][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.622579][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 316.622989][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 316.623445][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 316.623832][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 316.624206][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 316.624588][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 316.624948][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 316.625358][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 316.625741][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 316.626207][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 316.626605][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 316.627021][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 316.627451][ T11] kthread (kernel/kthread.c:388) 
[ 316.627768][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 316.628133][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 316.628481][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 316.628837][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  316.786157][   T11] ------------[ cut here ]------------
| [  316.786500][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 316.786888][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  316.787411][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  316.788307][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  316.788946][   T11] Workqueue: netns cleanup_net
[ 316.789218][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.789536][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  316.790655][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  316.791025][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  316.791491][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  316.791923][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  316.792434][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880258e2628
[  316.792878][   T11] R13: ffff8880258e2df8 R14: ffffc900000bfc98 R15: ffff8880258e2bc0
[  316.793328][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  316.793823][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  316.794224][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa006 CR4: 00000000001706f0
[  316.794668][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  316.795111][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  316.795573][   T11] Call Trace:
[  316.795752][   T11]  <TASK>
[ 316.795907][ T11] ? __warn (kernel/panic.c:677) 
[ 316.796156][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 316.796442][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.796797][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 316.797164][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 316.797461][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 316.797806][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 316.798154][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 316.798498][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.798903][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 316.799265][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 316.799678][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 316.800036][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 316.800451][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 316.800883][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 316.801270][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 316.801709][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 316.802144][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 316.802597][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 316.803006][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 316.803391][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 316.803812][ T11] kthread (kernel/kthread.c:388) 
[ 316.804107][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 316.804376][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 316.804635][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 316.804983][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  316.969133][   T11] ------------[ cut here ]------------
| [  316.969472][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 316.969844][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  316.970351][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  316.971254][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  316.971923][   T11] Workqueue: netns cleanup_net
[ 316.972247][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.972615][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  316.973779][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  316.974118][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  316.974587][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  316.975029][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  316.975565][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009752628
[  316.976209][   T11] R13: ffff888009752df8 R14: ffffc900000bfc98 R15: ffff888009752bc0
[  316.976711][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  316.977218][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  316.977593][   T11] CR2: 00007f59ba23b000 CR3: 0000000024134005 CR4: 00000000001706f0
[  316.978064][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  316.978491][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  316.978971][   T11] Call Trace:
[  316.979148][   T11]  <TASK>
[ 316.979332][ T11] ? __warn (kernel/panic.c:677) 
[ 316.979577][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 316.979849][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.980163][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 316.980411][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 316.980642][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 316.980888][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 316.981162][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 316.981408][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 316.981687][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 316.981937][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 316.982230][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 316.982470][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 316.982724][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 316.983031][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 316.983299][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 316.983594][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 316.983889][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 316.984207][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 316.984483][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 316.984763][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 316.985067][ T11] kthread (kernel/kthread.c:388) 
[ 316.985310][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 316.985593][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 316.985836][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 316.986131][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  317.169186][   T11] ------------[ cut here ]------------
| [  317.169565][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 317.170018][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  317.170543][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  317.171499][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  317.172193][   T11] Workqueue: netns cleanup_net
[ 317.172494][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 317.172851][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  317.173944][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  317.174306][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  317.174779][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  317.175272][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  317.175731][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880063aa628
[  317.176210][   T11] R13: ffff8880063aadf8 R14: ffffc900000bfc98 R15: ffff8880063aabc0
[  317.176637][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  317.177124][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  317.177474][   T11] CR2: 00007f87e742c270 CR3: 0000000024134004 CR4: 00000000001706f0
[  317.177895][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  317.178326][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  317.178805][   T11] Call Trace:
[  317.179038][   T11]  <TASK>
[ 317.179200][ T11] ? __warn (kernel/panic.c:677) 
[ 317.179472][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 317.179763][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 317.180108][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 317.180356][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 317.180595][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 317.180890][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 317.181226][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 317.181515][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 317.181826][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 317.182144][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 317.182485][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 317.182756][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 317.183047][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 317.183356][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 317.183649][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 317.183975][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 317.184267][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 317.184598][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 317.184892][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 317.185191][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 317.185494][ T11] kthread (kernel/kthread.c:388) 
[ 317.185764][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 317.186069][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 317.186316][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 317.186571][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  335.272185][   T11] ------------[ cut here ]------------
| [  335.272573][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 335.272998][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  335.273602][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  335.274533][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  335.275292][   T11] Workqueue: netns cleanup_net
[ 335.275717][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.276164][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  335.277306][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  335.277643][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  335.278108][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  335.278545][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  335.278969][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b6aa628
[  335.279407][   T11] R13: ffff88800b6aadf8 R14: ffffc900000bfc98 R15: ffff88800b6aabc0
[  335.279821][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  335.280302][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  335.280668][   T11] CR2: 00007f1f3c112270 CR3: 00000000079c6005 CR4: 00000000001706f0
[  335.281161][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  335.281597][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  335.282049][   T11] Call Trace:
[  335.282235][   T11]  <TASK>
[ 335.282395][ T11] ? __warn (kernel/panic.c:677) 
[ 335.282646][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 335.282933][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.283224][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 335.283479][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 335.283712][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 335.283968][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 335.284251][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 335.284513][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.284788][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 335.285040][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 335.285327][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 335.285563][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.285816][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 335.286087][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.286353][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 335.286678][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 335.287083][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 335.287438][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 335.287813][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 335.288184][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 335.288601][ T11] kthread (kernel/kthread.c:388) 
[ 335.288932][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.289358][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 335.289727][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.290127][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  335.477282][   T11] ------------[ cut here ]------------
| [  335.477587][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 335.478006][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  335.478565][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  335.479498][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  335.480278][   T11] Workqueue: netns cleanup_net
[ 335.480578][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.480913][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  335.482212][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  335.482729][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  335.483401][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  335.484068][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  335.484743][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800afa2628
[  335.485444][   T11] R13: ffff88800afa2df8 R14: ffffc900000bfc98 R15: ffff88800afa2bc0
[  335.486119][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  335.486846][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  335.487427][   T11] CR2: 00007ffd48771aa8 CR3: 0000000024134005 CR4: 00000000001706f0
[  335.488123][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  335.488791][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  335.489467][   T11] Call Trace:
[  335.489785][   T11]  <TASK>
[ 335.490086][ T11] ? __warn (kernel/panic.c:677) 
[ 335.490450][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 335.490865][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.491346][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 335.491638][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 335.491922][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 335.492201][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 335.492469][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 335.492704][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.492992][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 335.493240][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 335.493516][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 335.493754][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.494014][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 335.494276][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.494527][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 335.494799][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 335.495124][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 335.495448][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 335.495741][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 335.496043][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 335.496340][ T11] kthread (kernel/kthread.c:388) 
[ 335.496594][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.496892][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 335.497171][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.497438][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  335.689990][   T11] ------------[ cut here ]------------
| [  335.690508][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 335.691111][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  335.691910][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  335.692934][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  335.693584][   T11] Workqueue: netns cleanup_net
[ 335.693843][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.694164][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  335.695258][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  335.695598][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  335.696034][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  335.696498][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  335.696972][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800647a628
[  335.697421][   T11] R13: ffff88800647adf8 R14: ffffc900000bfc98 R15: ffff88800647abc0
[  335.697859][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  335.698375][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  335.698756][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa001 CR4: 00000000001706f0
[  335.699203][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  335.699623][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  335.700045][   T11] Call Trace:
[  335.700255][   T11]  <TASK>
[ 335.700462][ T11] ? __warn (kernel/panic.c:677) 
[ 335.700774][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 335.701158][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.701568][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 335.701980][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 335.702362][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 335.702733][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 335.703141][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 335.703494][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.703906][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 335.704286][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 335.704704][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 335.705067][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.705433][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 335.705851][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.706279][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 335.706701][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 335.707121][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 335.707582][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 335.708007][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 335.708392][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 335.708803][ T11] kthread (kernel/kthread.c:388) 
[ 335.709147][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.709423][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 335.709706][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.709980][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  335.879300][   T11] ------------[ cut here ]------------
| [  335.879718][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 335.880128][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  335.880810][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  335.882102][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  335.883058][   T11] Workqueue: netns cleanup_net
[ 335.883440][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.883902][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  335.885575][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  335.886064][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  335.886725][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  335.887389][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  335.888071][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b732628
[  335.888728][   T11] R13: ffff88800b732df8 R14: ffffc900000bfc98 R15: ffff88800b732bc0
[  335.889413][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  335.889997][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  335.890383][   T11] CR2: 00007f56cf3ba270 CR3: 0000000024134004 CR4: 00000000001706f0
[  335.890808][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  335.891235][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  335.891652][   T11] Call Trace:
[  335.891828][   T11]  <TASK>
[ 335.891995][ T11] ? __warn (kernel/panic.c:677) 
[ 335.892219][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 335.892508][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.892814][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 335.893077][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 335.893329][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 335.893600][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 335.893892][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 335.894201][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 335.894511][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 335.894777][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 335.895114][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 335.895361][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.895644][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 335.895929][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 335.896212][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 335.896531][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 335.896814][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 335.897131][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 335.897406][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 335.897678][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 335.897990][ T11] kthread (kernel/kthread.c:388) 
[ 335.898297][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.898630][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 335.899003][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 335.899420][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  354.132313][   T11] ------------[ cut here ]------------
| [  354.132628][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 354.133012][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  354.133504][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  354.134480][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  354.135186][   T11] Workqueue: netns cleanup_net
[ 354.135447][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.135820][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  354.136976][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  354.137357][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  354.137872][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  354.138359][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  354.138819][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a232628
[  354.139358][   T11] R13: ffff88800a232df8 R14: ffffc900000bfc98 R15: ffff88800a232bc0
[  354.139844][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  354.140442][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  354.140903][   T11] CR2: 0000559e2a7adc88 CR3: 00000000079c6004 CR4: 00000000001706f0
[  354.141377][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  354.141867][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  354.142364][   T11] Call Trace:
[  354.142585][   T11]  <TASK>
[ 354.142765][ T11] ? __warn (kernel/panic.c:677) 
[ 354.143034][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 354.143326][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.143688][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 354.143933][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 354.144194][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 354.144446][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 354.144737][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 354.145000][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.145290][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 354.145569][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 354.145903][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 354.146226][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.146490][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 354.146790][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.147087][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 354.147402][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 354.147677][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 354.148004][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 354.148286][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 354.148591][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 354.148874][ T11] kthread (kernel/kthread.c:388) 
[ 354.149130][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.149446][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 354.149711][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.149981][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  354.340105][   T11] ------------[ cut here ]------------
| [  354.340418][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 354.340797][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  354.341297][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  354.342259][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  354.343026][   T11] Workqueue: netns cleanup_net
[ 354.343287][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.343594][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  354.344752][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  354.345134][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  354.345614][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  354.346121][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  354.346613][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888004fb2628
[  354.347100][   T11] R13: ffff888004fb2df8 R14: ffffc900000bfc98 R15: ffff888004fb2bc0
[  354.347587][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  354.348126][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  354.348573][   T11] CR2: 00007ff5a4aa0270 CR3: 0000000024134001 CR4: 00000000001706f0
[  354.349079][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  354.349549][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  354.350067][   T11] Call Trace:
[  354.350287][   T11]  <TASK>
[ 354.350462][ T11] ? __warn (kernel/panic.c:677) 
[ 354.350683][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 354.350943][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.351227][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 354.351471][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 354.351702][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 354.351952][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 354.352246][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 354.352536][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.352850][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 354.353142][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 354.353478][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 354.353736][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.354041][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 354.354357][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.354626][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 354.354966][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 354.355283][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 354.355597][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 354.355912][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 354.356186][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 354.356538][ T11] kthread (kernel/kthread.c:388) 
[ 354.356787][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.357089][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 354.357354][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.357627][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  354.544418][   T11] ------------[ cut here ]------------
| [  354.544752][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 354.545168][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  354.545696][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  354.546866][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  354.547560][   T11] Workqueue: netns cleanup_net
[ 354.547859][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.548242][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  354.549358][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  354.549753][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  354.550255][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  354.550737][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  354.551234][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a862628
[  354.551725][   T11] R13: ffff88800a862df8 R14: ffffc900000bfc98 R15: ffff88800a862bc0
[  354.552231][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  354.552757][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  354.553183][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134006 CR4: 00000000001706f0
[  354.553686][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  354.554178][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  354.554659][   T11] Call Trace:
[  354.554902][   T11]  <TASK>
[ 354.555090][ T11] ? __warn (kernel/panic.c:677) 
[ 354.555355][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 354.555680][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.556019][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 354.556328][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 354.556623][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 354.556928][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 354.557256][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 354.557563][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.557891][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 354.558189][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 354.558495][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 354.558792][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.559094][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 354.559408][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.559688][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 354.560011][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 354.560321][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 354.560646][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 354.560921][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 354.561225][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 354.561543][ T11] kthread (kernel/kthread.c:388) 
[ 354.561805][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.562059][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 354.562296][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.562542][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  354.740451][   T11] ------------[ cut here ]------------
| [  354.740927][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 354.741454][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  354.742135][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  354.743291][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  354.744324][   T11] Workqueue: netns cleanup_net
[ 354.744731][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.745176][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  354.746529][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  354.746942][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  354.747487][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  354.748077][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  354.748621][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800aae2628
[  354.749348][   T11] R13: ffff88800aae2df8 R14: ffffc900000bfc98 R15: ffff88800aae2bc0
[  354.749822][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  354.750346][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  354.750762][   T11] CR2: 00007f837006b270 CR3: 0000000024134006 CR4: 00000000001706f0
[  354.751228][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  354.751661][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  354.752088][   T11] Call Trace:
[  354.752269][   T11]  <TASK>
[ 354.752432][ T11] ? __warn (kernel/panic.c:677) 
[ 354.752659][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 354.752918][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.753210][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 354.753457][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 354.753692][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 354.753943][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 354.754224][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 354.754499][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 354.754851][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 354.755129][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 354.755454][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 354.755745][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.756009][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 354.756312][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 354.756592][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 354.756916][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 354.757235][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 354.757543][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 354.757830][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 354.758168][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 354.758458][ T11] kthread (kernel/kthread.c:388) 
[ 354.758744][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.759036][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 354.759314][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 354.759602][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  389.080099][   T11] ------------[ cut here ]------------
| [  389.080416][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 389.080796][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  389.081296][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  389.082179][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  389.082823][   T11] Workqueue: netns cleanup_net
[ 389.083099][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.083414][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  389.084454][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  389.084811][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  389.085285][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  389.085725][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  389.086184][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800803a628
[  389.086635][   T11] R13: ffff88800803adf8 R14: ffffc900000bfc98 R15: ffff88800803abc0
[  389.087102][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  389.087621][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  389.088018][   T11] CR2: 00007fecf1024000 CR3: 00000000079c6004 CR4: 00000000001706f0
[  389.088492][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  389.088966][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  389.089456][   T11] Call Trace:
[  389.089641][   T11]  <TASK>
[ 389.089820][ T11] ? __warn (kernel/panic.c:677) 
[ 389.090109][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 389.090372][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.090698][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 389.090970][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 389.091242][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 389.091523][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 389.091821][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 389.092092][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.092414][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 389.092692][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 389.093015][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 389.093255][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.093505][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 389.093768][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.094025][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 389.094306][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 389.094570][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 389.094885][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 389.095168][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 389.095445][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 389.095750][ T11] kthread (kernel/kthread.c:388) 
[ 389.095998][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.096309][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 389.096556][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.096845][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  389.266044][   T11] ------------[ cut here ]------------
| [  389.266396][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 389.266780][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  389.267297][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  389.268267][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  389.268989][   T11] Workqueue: netns cleanup_net
[ 389.269266][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.269586][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  389.270758][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  389.271250][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  389.271680][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  389.272111][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  389.272531][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88802585a628
[  389.273006][   T11] R13: ffff88802585adf8 R14: ffffc900000bfc98 R15: ffff88802585abc0
[  389.273486][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  389.273986][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  389.274362][   T11] CR2: 00007f68adcbf270 CR3: 0000000024134002 CR4: 00000000001706f0
[  389.274814][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  389.275272][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  389.275757][   T11] Call Trace:
[  389.275936][   T11]  <TASK>
[ 389.276110][ T11] ? __warn (kernel/panic.c:677) 
[ 389.276356][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 389.276651][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.276945][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 389.277209][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 389.277470][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 389.277747][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 389.278041][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 389.278292][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.278599][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 389.278847][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 389.279187][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 389.279466][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.279743][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 389.280070][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.280341][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 389.280661][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 389.280972][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 389.281322][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 389.281615][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 389.281910][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 389.282229][ T11] kthread (kernel/kthread.c:388) 
[ 389.282489][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.282773][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 389.283061][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.283356][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  389.462145][   T11] ------------[ cut here ]------------
| [  389.462491][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 389.462910][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  389.463461][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  389.464447][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  389.465147][   T11] Workqueue: netns cleanup_net
[ 389.465404][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.465718][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  389.466763][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  389.467113][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  389.467530][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  389.467950][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  389.468378][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a8c2628
[  389.468800][   T11] R13: ffff88800a8c2df8 R14: ffffc900000bfc98 R15: ffff88800a8c2bc0
[  389.469235][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  389.469732][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  389.470167][   T11] CR2: 00007f0b141f0000 CR3: 0000000024134003 CR4: 00000000001706f0
[  389.470661][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  389.471130][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  389.471602][   T11] Call Trace:
[  389.471798][   T11]  <TASK>
[ 389.471976][ T11] ? __warn (kernel/panic.c:677) 
[ 389.472227][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 389.472535][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.472848][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 389.473137][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 389.473405][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 389.473669][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 389.473977][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 389.474217][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.474492][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 389.474737][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 389.475023][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 389.475260][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.475512][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 389.475778][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.476034][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 389.476338][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 389.476631][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 389.476973][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 389.477247][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 389.477534][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 389.477823][ T11] kthread (kernel/kthread.c:388) 
[ 389.478073][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.478353][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 389.478613][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.478884][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  389.639593][   T11] ------------[ cut here ]------------
| [  389.640011][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 389.640491][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  389.641132][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  389.642403][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  389.643283][   T11] Workqueue: netns cleanup_net
[ 389.643659][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.644122][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  389.645258][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  389.645636][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  389.646103][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  389.646616][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  389.647096][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880096f2628
[  389.647583][   T11] R13: ffff8880096f2df8 R14: ffffc900000bfc98 R15: ffff8880096f2bc0
[  389.648062][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  389.648583][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  389.648992][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[  389.649481][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  389.649917][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  389.650353][   T11] Call Trace:
[  389.650531][   T11]  <TASK>
[ 389.650694][ T11] ? __warn (kernel/panic.c:677) 
[ 389.650921][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 389.651189][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.651477][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 389.651726][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 389.652017][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 389.652297][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 389.652635][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 389.652926][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 389.653259][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 389.653548][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 389.653879][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 389.654188][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.654484][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 389.654788][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 389.655082][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 389.655415][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 389.655726][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 389.656058][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 389.656345][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 389.656635][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 389.656952][ T11] kthread (kernel/kthread.c:388) 
[ 389.657211][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.657500][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 389.657777][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 389.658064][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  643.323506][   T11] ------------[ cut here ]------------
| [  643.323874][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 643.324291][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  643.324819][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  643.325781][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  643.326512][   T11] Workqueue: netns cleanup_net
[ 643.326827][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.327196][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  643.328291][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  643.328645][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  643.329107][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  643.329573][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  643.330030][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888001fea628
[  643.330475][   T11] R13: ffff888001feadf8 R14: ffffc900000bfc98 R15: ffff888001feabc0
[  643.330931][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  643.331459][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  643.331838][   T11] CR2: 00007fb079f04270 CR3: 0000000024134001 CR4: 00000000001706f0
[  643.332288][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  643.332744][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  643.333217][   T11] Call Trace:
[  643.333439][   T11]  <TASK>
[ 643.333617][ T11] ? __warn (kernel/panic.c:677) 
[ 643.333887][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 643.334197][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.334513][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 643.334779][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 643.335066][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 643.335355][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 643.335627][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 643.335867][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.336152][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 643.336401][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 643.336683][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 643.336919][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.337181][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 643.337445][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.337719][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 643.338185][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 643.338610][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 643.339081][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 643.339509][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 643.339927][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 643.340364][ T11] kthread (kernel/kthread.c:388) 
[ 643.340723][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.341138][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 643.341521][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.341919][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  643.544374][   T11] ------------[ cut here ]------------
| [  643.544721][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 643.545254][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  643.545791][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  643.546818][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  643.547567][   T11] Workqueue: netns cleanup_net
[ 643.547854][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.548194][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  643.549495][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  643.549863][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  643.550420][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  643.550920][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  643.551453][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800624a628
[  643.551967][   T11] R13: ffff88800624adf8 R14: ffffc900000bfc98 R15: ffff88800624abc0
[  643.552482][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  643.553043][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  643.553389][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa006 CR4: 00000000001706f0
[  643.553861][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  643.554311][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  643.554755][   T11] Call Trace:
[  643.554971][   T11]  <TASK>
[ 643.555228][ T11] ? __warn (kernel/panic.c:677) 
[ 643.555478][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 643.555800][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.556129][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 643.556467][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 643.556764][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 643.557076][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 643.557374][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 643.557727][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.558151][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 643.558472][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 643.558806][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 643.559115][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.559406][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 643.559737][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.560017][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 643.560369][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 643.560679][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 643.561031][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 643.561294][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 643.561562][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 643.561857][ T11] kthread (kernel/kthread.c:388) 
[ 643.562094][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.562351][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 643.562609][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.562873][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  643.754009][   T11] ------------[ cut here ]------------
| [  643.754446][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 643.754935][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  643.755601][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  643.756902][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  643.757904][   T11] Workqueue: netns cleanup_net
[ 643.758358][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.758786][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  643.760188][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  643.760736][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  643.761507][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  643.762270][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  643.762954][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ad6a628
[  643.763734][   T11] R13: ffff88800ad6adf8 R14: ffffc900000bfc98 R15: ffff88800ad6abc0
[  643.764531][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  643.765321][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  643.765841][   T11] CR2: 00007fa1520e0270 CR3: 000000000e464001 CR4: 00000000001706f0
[  643.766553][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  643.767324][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  643.768038][   T11] Call Trace:
[  643.768256][   T11]  <TASK>
[ 643.768442][ T11] ? __warn (kernel/panic.c:677) 
[ 643.768728][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 643.769086][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.769407][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 643.769686][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 643.770100][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 643.770409][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 643.770847][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 643.771260][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.771648][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 643.772176][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 643.772469][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 643.772772][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.773230][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 643.773686][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.774110][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 643.774483][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 643.774842][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 643.775319][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 643.775659][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 643.776124][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 643.776502][ T11] kthread (kernel/kthread.c:388) 
[ 643.776838][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.777320][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 643.777593][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.777853][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  643.939452][   T11] ------------[ cut here ]------------
| [  643.939911][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 643.940388][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  643.940872][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  643.941982][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  643.942697][   T11] Workqueue: netns cleanup_net
[ 643.943077][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.943490][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  643.944646][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  643.945085][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  643.945503][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  643.945931][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  643.946529][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880095ba628
[  643.947058][   T11] R13: ffff8880095badf8 R14: ffffc900000bfc98 R15: ffff8880095babc0
[  643.947512][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  643.948219][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  643.948587][   T11] CR2: 00007fa1520e0270 CR3: 0000000024134005 CR4: 00000000001706f0
[  643.949079][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  643.949646][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  643.950199][   T11] Call Trace:
[  643.950410][   T11]  <TASK>
[ 643.950576][ T11] ? __warn (kernel/panic.c:677) 
[ 643.950800][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 643.951228][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.951612][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 643.951865][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 643.952186][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 643.952466][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 643.952884][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 643.953201][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 643.953497][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 643.953775][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 643.954096][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 643.954348][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.954630][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 643.954922][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 643.955199][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 643.955477][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 643.955786][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 643.956118][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 643.956384][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 643.956645][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 643.956946][ T11] kthread (kernel/kthread.c:388) 
[ 643.957196][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.957464][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 643.957711][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 643.957972][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  684.259516][   T11] ------------[ cut here ]------------
| [  684.259905][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 684.260351][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  684.260870][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  684.261843][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  684.262524][   T11] Workqueue: netns cleanup_net
[ 684.262785][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 684.263104][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  684.264137][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  684.264459][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  684.264887][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  684.265335][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  684.265766][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880067ca628
[  684.266206][   T11] R13: ffff8880067cadf8 R14: ffffc900000bfc98 R15: ffff8880067cabc0
[  684.266716][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  684.267285][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  684.267715][   T11] CR2: 0000559e2a511dec CR3: 0000000024134001 CR4: 00000000001706f0
[  684.268215][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  684.268732][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  684.269185][   T11] Call Trace:
[  684.269418][   T11]  <TASK>
[ 684.269613][ T11] ? __warn (kernel/panic.c:677) 
[ 684.269910][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 684.270221][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 684.270563][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 684.270870][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 684.271166][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 684.271452][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 684.271782][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 684.272085][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 684.272397][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 684.272678][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 684.273008][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 684.273291][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 684.273585][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 684.273872][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 684.274169][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 684.274497][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 684.274794][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 684.275113][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 684.275396][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 684.275688][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 684.276004][ T11] kthread (kernel/kthread.c:388) 
[ 684.276246][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 684.276528][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 684.276810][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 684.277100][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  684.475090][   T11] ------------[ cut here ]------------
| [  684.475545][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 684.476152][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  684.476856][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  684.478127][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  684.479213][   T11] Workqueue: netns cleanup_net
[ 684.479626][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 684.480113][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  684.481730][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  684.482123][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  684.482592][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  684.483062][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  684.483572][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880065b2628
[  684.484022][   T11] R13: ffff8880065b2df8 R14: ffffc900000bfc98 R15: ffff8880065b2bc0
[  684.484604][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  684.485149][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  684.485592][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa006 CR4: 00000000001706f0
[  684.486090][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  684.486610][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  684.487036][   T11] Call Trace:
[  684.487218][   T11]  <TASK>
[ 684.487375][ T11] ? __warn (kernel/panic.c:677) 
[ 684.487604][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 684.487863][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 684.488163][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 684.488420][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 684.488658][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 684.488935][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 684.489291][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 684.489582][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 684.489901][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 684.490222][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 684.490552][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 684.490841][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 684.491198][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 684.491506][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 684.491921][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 684.492381][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 684.492783][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 684.493193][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 684.493607][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 684.494047][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 684.494519][ T11] kthread (kernel/kthread.c:388) 
[ 684.494864][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 684.495270][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 684.495664][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 684.496098][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  687.927719][   T11] ------------[ cut here ]------------
| [  687.928135][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 687.928732][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  687.929518][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  687.930862][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  687.931780][   T11] Workqueue: netns cleanup_net
[ 687.932171][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 687.932657][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  687.934054][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  687.934444][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  687.934929][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  687.935422][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  687.935894][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800dad2628
[  687.936339][   T11] R13: ffff88800dad2df8 R14: ffffc900000bfc98 R15: ffff88800dad2bc0
[  687.936848][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  687.937434][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  687.937835][   T11] CR2: 00007f6c022d1000 CR3: 0000000024134004 CR4: 00000000001706f0
[  687.938302][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  687.938751][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  687.939253][   T11] Call Trace:
[  687.939438][   T11]  <TASK>
[ 687.939594][ T11] ? __warn (kernel/panic.c:677) 
[ 687.939812][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 687.940078][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 687.940359][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 687.940606][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 687.940845][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 687.941101][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 687.941372][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 687.941611][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 687.941885][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 687.942141][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 687.942423][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 687.942660][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 687.942924][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 687.943181][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 687.943459][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 687.943723][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 687.944018][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 687.944264][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 687.944521][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 687.944793][ T11] kthread (kernel/kthread.c:388) 
[ 687.945013][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 687.945260][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 687.945498][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 687.945746][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  687.948760][   T11] ------------[ cut here ]------------
| [  687.949060][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 687.949463][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  687.950350][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  687.951523][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  687.952460][   T11] Workqueue: netns cleanup_net
[ 687.952832][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 687.953258][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  687.954705][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  687.955168][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  687.955801][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  687.956356][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  687.956854][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888001fea628
[  687.957279][   T11] R13: ffff888001feadf8 R14: ffffc900000bfc98 R15: ffff888001feabc0
[  687.957722][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  687.958317][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  687.958728][   T11] CR2: 00007f6c022d1000 CR3: 0000000024134004 CR4: 00000000001706f0
[  687.959371][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  687.959899][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  687.960472][   T11] Call Trace:
[  687.960725][   T11]  <TASK>
[ 687.960951][ T11] ? __warn (kernel/panic.c:677) 
[ 687.961274][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 687.961666][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 687.962090][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 687.962434][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 687.962765][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 687.963104][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 687.963467][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 687.963805][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 687.964200][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 687.964547][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 687.964920][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 687.965247][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 687.965622][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 687.965871][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 687.966168][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 687.966433][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 687.966730][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 687.966979][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 687.967233][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 687.967504][ T11] kthread (kernel/kthread.c:388) 
[ 687.967732][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 687.967983][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 687.968222][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 687.968463][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  901.912648][   T11] ------------[ cut here ]------------
| [  901.912976][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 901.913361][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  901.913857][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  901.914727][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  901.915493][   T11] Workqueue: netns cleanup_net
[ 901.915772][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 901.916117][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  901.917153][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  901.917473][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  901.917888][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  901.918315][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  901.918767][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800860a628
[  901.919277][   T11] R13: ffff88800860adf8 R14: ffffc900000bfc98 R15: ffff88800860abc0
[  901.919720][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  901.920227][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  901.920603][   T11] CR2: 0000559e2a511dec CR3: 0000000024134003 CR4: 00000000001706f0
[  901.921080][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  901.921546][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  901.922017][   T11] Call Trace:
[  901.922225][   T11]  <TASK>
[ 901.922402][ T11] ? __warn (kernel/panic.c:677) 
[ 901.922633][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 901.922942][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 901.923244][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 901.923525][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 901.923794][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 901.924094][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 901.924448][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 901.924718][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 901.925051][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 901.925347][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 901.925648][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 901.925935][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 901.926229][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 901.926516][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 901.926770][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 901.927052][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 901.927317][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 901.927612][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 901.927867][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 901.928146][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 901.928416][ T11] kthread (kernel/kthread.c:388) 
[ 901.928673][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 901.929001][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 901.929268][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 901.929598][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  902.108261][   T11] ------------[ cut here ]------------
| [  902.108572][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 902.108953][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  902.109468][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  902.110458][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  902.111179][   T11] Workqueue: netns cleanup_net
[ 902.111439][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 902.111775][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  902.112917][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  902.113280][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  902.113749][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  902.114232][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  902.114650][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c572628
[  902.115085][   T11] R13: ffff88800c572df8 R14: ffffc900000bfc98 R15: ffff88800c572bc0
[  902.115507][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  902.115989][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  902.116337][   T11] CR2: 0000559e2a511dec CR3: 0000000024134003 CR4: 00000000001706f0
[  902.116767][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  902.117233][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  902.117723][   T11] Call Trace:
[  902.117929][   T11]  <TASK>
[ 902.118112][ T11] ? __warn (kernel/panic.c:677) 
[ 902.118363][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 902.118651][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 902.118967][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 902.119240][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 902.119498][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 902.119768][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 902.120097][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 902.120356][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 902.120662][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 902.120947][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 902.121260][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 902.121525][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 902.121826][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 902.122120][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 902.122400][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 902.122708][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 902.122993][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 902.123327][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 902.123581][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 902.123879][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 902.124173][ T11] kthread (kernel/kthread.c:388) 
[ 902.124401][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 902.124663][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 902.124929][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 902.125244][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  905.458943][   T11] ------------[ cut here ]------------
| [  905.459490][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 905.460187][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  905.460973][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  905.462243][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  905.462977][   T11] Workqueue: netns cleanup_net
[ 905.463244][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 905.463557][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  905.464577][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  905.464902][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  905.465332][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  905.465748][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  905.466182][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a9ca628
[  905.466609][   T11] R13: ffff88800a9cadf8 R14: ffffc900000bfc98 R15: ffff88800a9cabc0
[  905.467026][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  905.467529][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  905.467875][   T11] CR2: 0000559e2a511dec CR3: 00000000079aa001 CR4: 00000000001706f0
[  905.468307][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  905.468729][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  905.469165][   T11] Call Trace:
[  905.469380][   T11]  <TASK>
[ 905.469558][ T11] ? __warn (kernel/panic.c:677) 
[ 905.469823][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 905.470090][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 905.470377][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 905.470661][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 905.470932][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 905.471234][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 905.471529][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 905.471853][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 905.472168][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 905.472440][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 905.472769][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 905.473012][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 905.473358][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 905.473635][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 905.473939][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 905.474242][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 905.474607][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 905.474872][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 905.475188][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 905.475539][ T11] kthread (kernel/kthread.c:388) 
[ 905.475887][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 905.476320][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 905.476719][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 905.477169][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  905.482161][   T11] ------------[ cut here ]------------
| [  905.482613][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 905.483157][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  905.483830][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  905.485111][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  905.485802][   T11] Workqueue: netns cleanup_net
[ 905.486172][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 905.486632][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  905.488107][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  905.488577][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  905.489195][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  905.489806][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  905.490418][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800d8a2628
[  905.491033][   T11] R13: ffff88800d8a2df8 R14: ffffc900000bfc98 R15: ffff88800d8a2bc0
[  905.491637][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  905.492316][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  905.492716][   T11] CR2: 0000559e2a511dec CR3: 00000000079aa001 CR4: 00000000001706f0
[  905.493174][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  905.493662][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  905.494081][   T11] Call Trace:
[  905.494260][   T11]  <TASK>
[ 905.494417][ T11] ? __warn (kernel/panic.c:677) 
[ 905.494635][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 905.494894][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 905.495183][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 905.495427][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 905.495657][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 905.495904][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 905.496217][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 905.496461][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 905.496733][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 905.496986][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 905.497311][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 905.497551][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 905.497812][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 905.498067][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 905.498349][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 905.498611][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 905.498895][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 905.499156][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 905.499418][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 905.499686][ T11] kthread (kernel/kthread.c:388) 
[ 905.499904][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 905.500160][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 905.500400][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 905.500646][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  929.379287][   T11] ------------[ cut here ]------------
| [  929.379651][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 929.380110][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  929.380669][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  929.381556][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  929.382202][   T11] Workqueue: netns cleanup_net
[ 929.382486][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.382824][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  929.383969][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  929.384296][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  929.384724][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  929.385154][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  929.385593][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ce12628
[  929.386065][   T11] R13: ffff88800ce12df8 R14: ffffc900000bfc98 R15: ffff88800ce12bc0
[  929.386572][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  929.387110][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  929.387485][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa004 CR4: 00000000001706f0
[  929.387947][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  929.388392][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  929.388840][   T11] Call Trace:
[  929.389051][   T11]  <TASK>
[ 929.389234][ T11] ? __warn (kernel/panic.c:677) 
[ 929.389461][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 929.389753][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.390062][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 929.390325][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 929.390583][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 929.390856][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 929.391171][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 929.391463][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.391805][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 929.392071][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 929.392417][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 929.392692][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 929.392974][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 929.393257][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 929.393523][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 929.393820][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 929.394115][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 929.394423][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 929.394691][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 929.394972][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 929.395264][ T11] kthread (kernel/kthread.c:388) 
[ 929.395500][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 929.395770][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 929.396041][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 929.396366][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  929.610234][   T11] ------------[ cut here ]------------
| [  929.610587][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 929.611013][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  929.611610][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  929.612631][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  929.613394][   T11] Workqueue: netns cleanup_net
[ 929.613711][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.614178][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  929.615673][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  929.616290][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  929.617005][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  929.617697][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  929.618400][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a012628
[  929.619140][   T11] R13: ffff88800a012df8 R14: ffffc900000bfc98 R15: ffff88800a012bc0
[  929.619853][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  929.620629][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  929.621156][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa005 CR4: 00000000001706f0
[  929.621757][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  929.622371][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  929.622829][   T11] Call Trace:
[  929.623018][   T11]  <TASK>
[ 929.623226][ T11] ? __warn (kernel/panic.c:677) 
[ 929.623509][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 929.623819][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.624139][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 929.624437][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 929.624698][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 929.624987][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 929.625329][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 929.625575][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.625943][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 929.626246][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 929.626592][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 929.626873][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 929.627168][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 929.627478][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 929.627789][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 929.628083][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 929.628433][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 929.628744][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 929.629039][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 929.629335][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 929.629663][ T11] kthread (kernel/kthread.c:388) 
[ 929.629906][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 929.630217][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 929.630491][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 929.630778][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  929.814154][   T11] ------------[ cut here ]------------
| [  929.814478][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 929.814862][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  929.815365][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  929.816408][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  929.817110][   T11] Workqueue: netns cleanup_net
[ 929.817383][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.817753][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  929.818885][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  929.819224][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  929.819729][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  929.820232][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  929.820737][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800668a628
[  929.821218][   T11] R13: ffff88800668adf8 R14: ffffc900000bfc98 R15: ffff88800668abc0
[  929.821719][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  929.822231][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  929.822665][   T11] CR2: 00007f2485d54000 CR3: 0000000024134003 CR4: 00000000001706f0
[  929.823162][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  929.823602][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  929.824075][   T11] Call Trace:
[  929.824289][   T11]  <TASK>
[ 929.824471][ T11] ? __warn (kernel/panic.c:677) 
[ 929.824732][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 929.825077][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.825359][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 929.825607][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 929.825851][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 929.826113][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 929.826405][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 929.826642][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 929.826929][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 929.827196][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 929.827479][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 929.827739][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 929.828067][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 929.828360][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 929.828652][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 929.828998][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 929.829305][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 929.829666][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 929.829951][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 929.830258][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 929.830582][ T11] kthread (kernel/kthread.c:388) 
[ 929.830836][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 929.831115][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 929.831380][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 929.831654][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  930.014929][   T11] ------------[ cut here ]------------
| [  930.015427][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 930.015943][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  930.016461][   T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  930.017350][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  930.018097][   T11] Workqueue: netns cleanup_net
[ 930.018393][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 930.018734][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  930.019930][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  930.020300][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  930.020817][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  930.021275][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  930.021763][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800f302628
[  930.022285][   T11] R13: ffff88800f302df8 R14: ffffc900000bfc98 R15: ffff88800f302bc0
[  930.022764][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[  930.023316][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  930.023727][   T11] CR2: 00007f75e5e0c270 CR3: 0000000024134005 CR4: 00000000001706f0
[  930.024237][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  930.024719][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  930.025220][   T11] Call Trace:
[  930.025429][   T11]  <TASK>
[ 930.025602][ T11] ? __warn (kernel/panic.c:677) 
[ 930.025854][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 930.026153][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 930.026475][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 930.026722][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 930.026966][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 930.027218][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 930.027490][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 930.027729][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 930.028011][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 930.028260][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 930.028574][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 930.028840][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 930.029133][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 930.029424][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 930.029696][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 930.030015][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 930.030286][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 930.030627][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 930.030901][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 930.031187][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 930.031534][ T11] kthread (kernel/kthread.c:388) 
[ 930.031772][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 930.032056][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 930.032342][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 930.032611][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  955.492012][   T11] ------------[ cut here ]------------
| [  955.492343][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 955.492743][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  955.493244][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  955.494353][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  955.495123][   T11] Workqueue: netns cleanup_net
[ 955.495410][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.495749][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  955.497013][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  955.497367][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  955.497836][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  955.498351][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  955.498777][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c6ea628
[  955.499259][   T11] R13: ffff88800c6eadf8 R14: ffffc900000bfc98 R15: ffff88800c6eabc0
[  955.499676][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  955.500240][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  955.500622][   T11] CR2: 00007f2ccf280270 CR3: 0000000005594003 CR4: 00000000001706f0
[  955.501196][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  955.501662][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  955.502193][   T11] Call Trace:
[  955.502387][   T11]  <TASK>
[ 955.502547][ T11] ? __warn (kernel/panic.c:677) 
[ 955.502810][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 955.503144][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.503469][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 955.503748][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 955.504069][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 955.504370][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 955.504663][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 955.505035][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.505345][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 955.505611][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 955.505929][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 955.506343][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 955.506627][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 955.506919][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 955.507249][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 955.507560][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 955.507829][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 955.508221][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 955.508486][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 955.508797][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 955.509145][ T11] kthread (kernel/kthread.c:388) 
[ 955.509366][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 955.509612][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 955.509849][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 955.510153][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  955.690420][   T11] ------------[ cut here ]------------
| [  955.690765][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 955.691256][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  955.691818][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  955.693030][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  955.693793][   T11] Workqueue: netns cleanup_net
[ 955.694113][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.694514][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  955.695796][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  955.696165][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  955.696705][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  955.697201][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  955.697712][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009d9a628
[  955.698234][   T11] R13: ffff888009d9adf8 R14: ffffc900000bfc98 R15: ffff888009d9abc0
[  955.698723][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  955.699292][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  955.699698][   T11] CR2: 00007fe798a87000 CR3: 0000000024134002 CR4: 00000000001706f0
[  955.700151][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  955.700632][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  955.701060][   T11] Call Trace:
[  955.701253][   T11]  <TASK>
[ 955.701412][ T11] ? __warn (kernel/panic.c:677) 
[ 955.701633][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 955.701887][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.702191][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 955.702442][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 955.702676][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 955.702927][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 955.703268][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 955.703569][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.703873][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 955.704144][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 955.704487][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 955.704762][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 955.705048][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 955.705381][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 955.705674][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 955.705987][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 955.706367][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 955.706681][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 955.706940][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 955.707240][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 955.707537][ T11] kthread (kernel/kthread.c:388) 
[ 955.707765][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 955.708037][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 955.708325][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 955.708577][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  955.930102][   T11] ------------[ cut here ]------------
| [  955.930533][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 955.930950][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  955.931498][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  955.932614][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  955.933272][   T11] Workqueue: netns cleanup_net
[ 955.933536][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.933856][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  955.934955][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  955.935286][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  955.935782][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  955.936258][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  955.936721][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800d10a628
[  955.937177][   T11] R13: ffff88800d10adf8 R14: ffffc900000bfc98 R15: ffff88800d10abc0
[  955.937665][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  955.938144][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  955.938495][   T11] CR2: 00007fe798a87000 CR3: 0000000024134002 CR4: 00000000001706f0
[  955.938927][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  955.939354][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  955.939789][   T11] Call Trace:
[  955.940016][   T11]  <TASK>
[ 955.940208][ T11] ? __warn (kernel/panic.c:677) 
[ 955.940452][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 955.940752][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.941069][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 955.941342][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 955.941592][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 955.941938][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 955.942230][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 955.942510][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 955.942830][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 955.943122][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 955.943467][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 955.943725][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 955.944026][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 955.944310][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 955.944586][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 955.944907][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 955.945187][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 955.945513][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 955.945800][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 955.946071][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 955.946408][ T11] kthread (kernel/kthread.c:388) 
[ 955.946652][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 955.946934][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 955.947233][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 955.947502][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  956.137748][   T11] ------------[ cut here ]------------
| [  956.138175][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 956.138613][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  956.139182][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  956.140243][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  956.140887][   T11] Workqueue: netns cleanup_net
[ 956.141189][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 956.141513][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  956.142581][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  956.142912][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  956.143436][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  956.143966][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  956.144424][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025aba628
[  956.144885][   T11] R13: ffff888025abadf8 R14: ffffc900000bfc98 R15: ffff888025ababc0
[  956.145380][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[  956.145845][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  956.146258][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134003 CR4: 00000000001706f0
[  956.146762][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  956.147235][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  956.147696][   T11] Call Trace:
[  956.147891][   T11]  <TASK>
[ 956.148145][ T11] ? __warn (kernel/panic.c:677) 
[ 956.148417][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 956.148714][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 956.149041][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 956.149350][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 956.149648][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 956.149941][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 956.150241][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 956.150528][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 956.150871][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 956.151193][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 956.151513][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 956.151798][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 956.152134][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 956.152437][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 956.152706][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 956.153052][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 956.153374][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 956.153706][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 956.153954][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 956.154216][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 956.154486][ T11] kthread (kernel/kthread.c:388) 
[ 956.154708][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 956.154954][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 956.155204][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 956.155446][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  981.775065][   T11] ------------[ cut here ]------------
| [  981.775635][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 981.776319][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  981.777165][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  981.778664][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  981.779618][   T11] Workqueue: netns cleanup_net
[ 981.780014][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 981.780544][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  981.782284][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  981.782824][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  981.783531][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  981.784260][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  981.784953][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008312628
[  981.785684][   T11] R13: ffff888008312df8 R14: ffffc900000bfc98 R15: ffff888008312bc0
[  981.786301][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  981.786987][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  981.787492][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa006 CR4: 00000000001706f0
[  981.788106][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  981.788822][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  981.789497][   T11] Call Trace:
[  981.789856][   T11]  <TASK>
[ 981.790123][ T11] ? __warn (kernel/panic.c:677) 
[ 981.790459][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 981.790919][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 981.791417][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 981.791841][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 981.792273][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 981.792680][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 981.793181][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 981.793582][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 981.794132][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 981.794563][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 981.795030][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 981.795475][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 981.795879][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 981.796294][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 981.796663][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 981.797083][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 981.797475][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 981.797912][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 981.798434][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 981.798815][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 981.799276][ T11] kthread (kernel/kthread.c:388) 
[ 981.799676][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 981.800095][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 981.800449][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 981.800812][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  981.995196][   T11] ------------[ cut here ]------------
| [  981.995525][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 981.995910][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  981.996514][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  981.997675][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  981.998396][   T11] Workqueue: netns cleanup_net
[ 981.998694][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 981.999045][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  982.000129][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  982.000461][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  982.000876][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  982.001298][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  982.001721][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800cb2a628
[  982.002145][   T11] R13: ffff88800cb2adf8 R14: ffffc900000bfc98 R15: ffff88800cb2abc0
[  982.002582][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  982.003104][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  982.003492][   T11] CR2: 0000559e2a93af38 CR3: 0000000024134001 CR4: 00000000001706f0
[  982.003968][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  982.004472][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  982.004927][   T11] Call Trace:
[  982.005144][   T11]  <TASK>
[ 982.005353][ T11] ? __warn (kernel/panic.c:677) 
[ 982.005601][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 982.005879][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.006201][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 982.006497][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 982.006737][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 982.007013][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 982.007326][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 982.007687][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.008180][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 982.008564][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 982.009062][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 982.009429][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 982.009846][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 982.010286][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 982.010708][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 982.011083][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 982.011389][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 982.011725][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 982.011993][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 982.012276][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 982.012591][ T11] kthread (kernel/kthread.c:388) 
[ 982.012834][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 982.013087][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 982.013331][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 982.013579][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  982.227223][   T11] ------------[ cut here ]------------
| [  982.227561][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 982.227937][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  982.228933][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  982.230115][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  982.230806][   T11] Workqueue: netns cleanup_net
[ 982.231085][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.231422][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  982.232514][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  982.232860][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  982.233311][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  982.233759][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  982.234268][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880079d2628
[  982.234745][   T11] R13: ffff8880079d2df8 R14: ffffc900000bfc98 R15: ffff8880079d2bc0
[  982.235202][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  982.235744][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  982.236168][   T11] CR2: 00007f8648248270 CR3: 0000000009dc2003 CR4: 00000000001706f0
[  982.236668][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  982.237119][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  982.237627][   T11] Call Trace:
[  982.237815][   T11]  <TASK>
[ 982.238021][ T11] ? __warn (kernel/panic.c:677) 
[ 982.238266][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 982.238536][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.238824][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 982.239141][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 982.239415][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 982.239704][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 982.240048][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 982.240335][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.240652][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 982.240936][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 982.241271][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 982.241568][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 982.241847][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 982.242163][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 982.242425][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 982.242753][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 982.243075][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 982.243425][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 982.243700][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 982.244013][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 982.244341][ T11] kthread (kernel/kthread.c:388) 
[ 982.244623][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 982.244893][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 982.245194][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 982.245485][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  982.429374][   T11] ------------[ cut here ]------------
| [  982.429769][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 982.430290][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  982.430949][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  982.432125][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  982.432789][   T11] Workqueue: netns cleanup_net
[ 982.433155][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.433470][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[  982.434571][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[  982.434991][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[  982.435544][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[  982.436077][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[  982.436557][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025a32628
[  982.437163][   T11] R13: ffff888025a32df8 R14: ffffc900000bfc98 R15: ffff888025a32bc0
[  982.437665][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[  982.438270][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  982.438669][   T11] CR2: 00007f8648248270 CR3: 0000000024134004 CR4: 00000000001706f0
[  982.439158][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  982.439759][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  982.440226][   T11] Call Trace:
[  982.440460][   T11]  <TASK>
[ 982.440659][ T11] ? __warn (kernel/panic.c:677) 
[ 982.441014][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 982.441339][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.441642][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 982.441884][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 982.442153][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 982.442404][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 982.442671][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 982.442908][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 982.443234][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 982.443531][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 982.443928][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 982.444239][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 982.444532][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 982.444838][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 982.445143][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 982.445447][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 982.445775][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 982.446147][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 982.446472][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 982.446775][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 982.447083][ T11] kthread (kernel/kthread.c:388) 
[ 982.447356][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 982.447620][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 982.447942][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 982.448220][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1007.487531][   T11] ------------[ cut here ]------------
| [ 1007.487851][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1007.488246][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1007.488767][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1007.489842][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1007.490630][   T11] Workqueue: netns cleanup_net
[ 1007.490919][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.491420][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1007.492684][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1007.493159][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1007.493659][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1007.494173][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1007.494627][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880078ba628
[ 1007.495158][   T11] R13: ffff8880078badf8 R14: ffffc900000bfc98 R15: ffff8880078babc0
[ 1007.495611][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1007.496132][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1007.496567][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1007.497035][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1007.497500][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1007.497935][   T11] Call Trace:
[ 1007.498128][   T11]  <TASK>
[ 1007.498303][ T11] ? __warn (kernel/panic.c:677) 
[ 1007.498547][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1007.498825][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.499221][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1007.499508][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1007.499773][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1007.500070][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1007.500348][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1007.500614][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.500928][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1007.501198][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1007.501522][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1007.501781][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1007.502052][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1007.502313][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1007.502562][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1007.502838][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1007.503151][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1007.503440][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1007.503691][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1007.503942][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1007.504232][ T11] kthread (kernel/kthread.c:388) 
[ 1007.504502][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1007.504784][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1007.505080][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1007.505358][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1007.694446][   T11] ------------[ cut here ]------------
| [ 1007.694788][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1007.695200][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1007.695725][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1007.696915][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1007.697639][   T11] Workqueue: netns cleanup_net
[ 1007.697900][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.698243][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1007.699371][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1007.699705][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1007.700127][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1007.700545][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1007.701006][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c28a628
[ 1007.701455][   T11] R13: ffff88800c28adf8 R14: ffffc900000bfc98 R15: ffff88800c28abc0
[ 1007.701954][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1007.702489][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1007.702969][   T11] CR2: 00007f2f52ec7270 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1007.703431][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1007.703910][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1007.704371][   T11] Call Trace:
[ 1007.704559][   T11]  <TASK>
[ 1007.704734][ T11] ? __warn (kernel/panic.c:677) 
[ 1007.704984][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1007.705266][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.705574][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1007.705840][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1007.706098][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1007.706371][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1007.706686][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1007.706942][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.707258][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1007.707568][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1007.707880][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1007.708148][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1007.708455][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1007.708727][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1007.708997][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1007.709300][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1007.709590][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1007.709902][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1007.710183][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1007.710455][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1007.710752][ T11] kthread (kernel/kthread.c:388) 
[ 1007.710997][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1007.711272][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1007.711511][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1007.711788][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1007.906559][   T11] ------------[ cut here ]------------
| [ 1007.906881][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1007.907309][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1007.907977][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1007.909179][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1007.909994][   T11] Workqueue: netns cleanup_net
[ 1007.910294][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.910663][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1007.911929][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1007.912311][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1007.912871][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1007.913342][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1007.913759][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009f3a628
[ 1007.914184][   T11] R13: ffff888009f3adf8 R14: ffffc900000bfc98 R15: ffff888009f3abc0
[ 1007.914604][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1007.915076][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1007.915426][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1007.915913][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1007.916467][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1007.917042][   T11] Call Trace:
[ 1007.917287][   T11]  <TASK>
[ 1007.917489][ T11] ? __warn (kernel/panic.c:677) 
[ 1007.917732][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1007.918045][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.918371][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1007.918664][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1007.918945][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1007.919253][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1007.919570][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1007.919868][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1007.920252][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1007.920547][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1007.920848][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1007.921147][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1007.921489][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1007.921780][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1007.922083][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1007.922477][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1007.922780][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1007.923178][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1007.923471][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1007.923754][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1007.924142][ T11] kthread (kernel/kthread.c:388) 
[ 1007.924417][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1007.924716][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1007.925041][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1007.925343][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1008.135247][   T11] ------------[ cut here ]------------
| [ 1008.135623][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1008.136110][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1008.136648][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1008.137821][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1008.138618][   T11] Workqueue: netns cleanup_net
[ 1008.138877][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1008.139197][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1008.140263][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1008.140601][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1008.141079][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1008.141635][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1008.142168][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b502628
[ 1008.142679][   T11] R13: ffff88800b502df8 R14: ffffc900000bfc98 R15: ffff88800b502bc0
[ 1008.143174][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1008.143752][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1008.144205][   T11] CR2: 00007fb369e1f000 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1008.144753][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1008.145348][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1008.145856][   T11] Call Trace:
[ 1008.146117][   T11]  <TASK>
[ 1008.146316][ T11] ? __warn (kernel/panic.c:677) 
[ 1008.146561][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1008.146881][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1008.147276][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1008.147542][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1008.147807][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1008.148157][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1008.148442][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1008.148726][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1008.149101][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1008.149364][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1008.149740][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1008.150028][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1008.150300][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1008.150657][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1008.150940][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1008.151221][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1008.151483][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1008.151768][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1008.152020][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1008.152276][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1008.152544][ T11] kthread (kernel/kthread.c:388) 
[ 1008.152769][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1008.153058][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1008.153332][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1008.153622][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1032.944547][   T11] ------------[ cut here ]------------
| [ 1032.944987][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1032.945851][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1032.946434][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1032.947553][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1032.948441][   T11] Workqueue: netns cleanup_net
[ 1032.948834][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1032.949344][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1032.950634][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1032.951155][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1032.951669][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1032.952203][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1032.952825][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007b6a628
[ 1032.953491][   T11] R13: ffff888007b6adf8 R14: ffffc900000bfc98 R15: ffff888007b6abc0
[ 1032.954167][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1032.954950][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1032.955532][   T11] CR2: 00007f734b1d1000 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1032.956218][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1032.956907][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1032.957590][   T11] Call Trace:
[ 1032.957874][   T11]  <TASK>
[ 1032.958152][ T11] ? __warn (kernel/panic.c:677) 
[ 1032.958510][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1032.958940][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1032.959395][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1032.959816][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1032.960201][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1032.960629][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1032.961037][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1032.961316][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1032.961650][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1032.961935][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1032.962263][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1032.962503][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1032.962759][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1032.963027][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1032.963278][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1032.963557][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1032.963820][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1032.964112][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1032.964358][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1032.964650][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1032.964968][ T11] kthread (kernel/kthread.c:388) 
[ 1032.965233][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1032.965505][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1032.965866][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1032.966182][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1033.162357][   T11] ------------[ cut here ]------------
| [ 1033.162718][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1033.163167][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1033.163708][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1033.164944][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1033.165769][   T11] Workqueue: netns cleanup_net
[ 1033.166144][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.166507][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1033.167746][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1033.168144][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1033.168627][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1033.169136][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1033.169636][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888002012628
[ 1033.170164][   T11] R13: ffff888002012df8 R14: ffffc900000bfc98 R15: ffff888002012bc0
[ 1033.170639][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1033.171121][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1033.171481][   T11] CR2: 00007f79e42bc270 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1033.171914][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1033.172347][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1033.172770][   T11] Call Trace:
[ 1033.172947][   T11]  <TASK>
[ 1033.173155][ T11] ? __warn (kernel/panic.c:677) 
[ 1033.173476][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1033.173765][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.174094][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1033.174382][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1033.174614][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1033.174872][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1033.175150][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1033.175439][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.175785][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1033.176053][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1033.176368][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1033.176626][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1033.176928][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1033.177250][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1033.177501][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1033.177775][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1033.178053][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1033.178340][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1033.178594][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1033.178854][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1033.179129][ T11] kthread (kernel/kthread.c:388) 
[ 1033.179344][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1033.179585][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1033.179822][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1033.180079][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1033.379601][   T11] ------------[ cut here ]------------
| [ 1033.380025][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1033.380488][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1033.380995][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1033.382085][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1033.382781][   T11] Workqueue: netns cleanup_net
[ 1033.383081][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.383393][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1033.384470][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1033.384828][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1033.385314][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1033.385756][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1033.386211][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888005fd2628
[ 1033.386669][   T11] R13: ffff888005fd2df8 R14: ffffc900000bfc98 R15: ffff888005fd2bc0
[ 1033.387095][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1033.387623][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1033.388178][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[ 1033.388627][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1033.389063][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1033.389484][   T11] Call Trace:
[ 1033.389691][   T11]  <TASK>
[ 1033.389850][ T11] ? __warn (kernel/panic.c:677) 
[ 1033.390100][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1033.390375][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.390678][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1033.390934][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1033.391186][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1033.391520][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1033.391912][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1033.392188][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.392504][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1033.392856][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1033.393170][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1033.393437][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1033.393739][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1033.394036][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1033.394313][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1033.394628][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1033.395004][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1033.395418][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1033.395739][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1033.396108][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1033.396481][ T11] kthread (kernel/kthread.c:388) 
[ 1033.396763][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1033.397159][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1033.397558][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1033.397909][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1033.585344][   T11] ------------[ cut here ]------------
| [ 1033.585700][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1033.586183][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1033.586757][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1033.587984][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1033.588628][   T11] Workqueue: netns cleanup_net
[ 1033.588887][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.589204][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1033.590425][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1033.590749][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1033.591172][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1033.591597][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1033.592024][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888003722628
[ 1033.592484][   T11] R13: ffff888003722df8 R14: ffffc900000bfc98 R15: ffff888003722bc0
[ 1033.592975][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1033.593541][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1033.593974][   T11] CR2: 00007fbf20ecb000 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1033.594508][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1033.594997][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1033.595519][   T11] Call Trace:
[ 1033.595723][   T11]  <TASK>
[ 1033.595906][ T11] ? __warn (kernel/panic.c:677) 
[ 1033.596172][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1033.596513][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.596853][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1033.597162][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1033.597433][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1033.597756][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1033.598161][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1033.598431][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1033.598788][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1033.599079][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1033.599414][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1033.599714][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1033.600020][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1033.600358][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1033.600647][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1033.600950][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1033.601254][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1033.601638][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1033.601893][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1033.602171][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1033.602464][ T11] kthread (kernel/kthread.c:388) 
[ 1033.602695][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1033.602948][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1033.603202][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1033.603455][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1056.404471][   T11] ------------[ cut here ]------------
| [ 1056.404837][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1056.405272][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1056.405829][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1056.407027][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1056.407731][   T11] Workqueue: netns cleanup_net
[ 1056.408051][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.408402][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1056.409467][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1056.409831][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1056.410319][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1056.410740][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1056.411176][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800dee2628
[ 1056.411600][   T11] R13: ffff88800dee2df8 R14: ffffc900000bfc98 R15: ffff88800dee2bc0
[ 1056.412040][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1056.412516][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1056.412877][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1056.413316][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1056.413748][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1056.414236][   T11] Call Trace:
[ 1056.414450][   T11]  <TASK>
[ 1056.414628][ T11] ? __warn (kernel/panic.c:677) 
[ 1056.414873][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1056.415184][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.415505][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1056.415786][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1056.416068][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1056.416376][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1056.416678][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1056.416948][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.417268][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1056.417557][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1056.417872][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1056.418150][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1056.418440][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1056.418761][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1056.419061][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1056.419354][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1056.419663][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1056.420032][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1056.420325][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1056.420598][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1056.420933][ T11] kthread (kernel/kthread.c:388) 
[ 1056.421207][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1056.421505][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1056.421769][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1056.422027][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1056.596312][   T11] ------------[ cut here ]------------
| [ 1056.596678][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1056.597099][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1056.597586][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1056.598619][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1056.599279][   T11] Workqueue: netns cleanup_net
[ 1056.599546][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.599854][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1056.600922][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1056.601297][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1056.601791][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1056.602245][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1056.602696][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025a02628
[ 1056.603186][   T11] R13: ffff888025a02df8 R14: ffffc900000bfc98 R15: ffff888025a02bc0
[ 1056.603647][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1056.604172][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1056.604560][   T11] CR2: 00007f1f46e3a270 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1056.605049][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1056.605503][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1056.605976][   T11] Call Trace:
[ 1056.606179][   T11]  <TASK>
[ 1056.606355][ T11] ? __warn (kernel/panic.c:677) 
[ 1056.606616][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1056.606897][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.607199][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1056.607477][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1056.607750][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1056.608042][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1056.608325][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1056.608597][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.608941][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1056.609212][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1056.609535][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1056.609804][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1056.610095][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1056.610389][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1056.610676][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1056.610987][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1056.611289][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1056.611635][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1056.611893][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1056.612170][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1056.612441][ T11] kthread (kernel/kthread.c:388) 
[ 1056.612660][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1056.612905][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1056.613151][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1056.613398][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1056.826919][   T11] ------------[ cut here ]------------
| [ 1056.827243][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1056.827659][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1056.828207][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1056.829268][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1056.829944][   T11] Workqueue: netns cleanup_net
[ 1056.830240][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.830605][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1056.831746][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1056.832082][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1056.832557][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1056.833014][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1056.833459][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800cc1a628
[ 1056.833926][   T11] R13: ffff88800cc1adf8 R14: ffffc900000bfc98 R15: ffff88800cc1abc0
[ 1056.834382][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1056.834900][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1056.835254][   T11] CR2: 0000559e2a7ad478 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1056.835788][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1056.836366][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1056.837018][   T11] Call Trace:
[ 1056.837278][   T11]  <TASK>
[ 1056.837535][ T11] ? __warn (kernel/panic.c:677) 
[ 1056.837865][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1056.838291][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.838697][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1056.839051][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1056.839381][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1056.839735][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1056.840129][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1056.840508][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1056.840972][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1056.841373][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1056.841841][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1056.842218][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1056.842632][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1056.843061][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1056.843489][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1056.843916][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1056.844399][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1056.844812][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1056.845231][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1056.845665][ T11] kthread (kernel/kthread.c:388) 
[ 1056.846160][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1056.846536][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1056.846864][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1056.847145][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1057.021433][   T11] ------------[ cut here ]------------
| [ 1057.021838][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1057.022311][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1057.022793][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1057.023926][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1057.024674][   T11] Workqueue: netns cleanup_net
[ 1057.024969][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1057.025334][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1057.026782][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1057.027138][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1057.027601][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1057.028042][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1057.028499][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c1f2628
[ 1057.029007][   T11] R13: ffff88800c1f2df8 R14: ffffc900000bfc98 R15: ffff88800c1f2bc0
[ 1057.029502][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1057.030049][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1057.030470][   T11] CR2: 00007ff18dcfb000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1057.030931][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1057.031460][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1057.031922][   T11] Call Trace:
[ 1057.032116][   T11]  <TASK>
[ 1057.032301][ T11] ? __warn (kernel/panic.c:677) 
[ 1057.032553][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1057.032836][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1057.033173][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1057.033485][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1057.033867][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1057.034215][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1057.034612][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1057.034971][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1057.035382][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1057.035754][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1057.036069][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1057.036332][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1057.036626][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1057.036901][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1057.037211][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1057.037518][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1057.037801][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1057.038129][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1057.038377][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1057.038626][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1057.038894][ T11] kthread (kernel/kthread.c:388) 
[ 1057.039118][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1057.039363][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1057.039604][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1057.039848][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1079.544858][   T11] ------------[ cut here ]------------
| [ 1079.545240][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1079.545634][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1079.546130][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1079.547132][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1079.547779][   T11] Workqueue: netns cleanup_net
[ 1079.548044][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.548354][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1079.549410][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1079.549792][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1079.550319][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1079.550792][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1079.551275][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800d10a628
[ 1079.551766][   T11] R13: ffff88800d10adf8 R14: ffffc900000bfc98 R15: ffff88800d10abc0
[ 1079.552189][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1079.552657][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1079.553061][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa003 CR4: 00000000001706f0
[ 1079.553544][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1079.554018][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1079.554474][   T11] Call Trace:
[ 1079.554651][   T11]  <TASK>
[ 1079.554866][ T11] ? __warn (kernel/panic.c:677) 
[ 1079.555095][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1079.555404][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.555705][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1079.555995][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1079.556233][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1079.556512][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1079.556783][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1079.557075][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.557382][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1079.557652][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1079.557982][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1079.558248][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1079.558501][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1079.558822][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1079.559079][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1079.559413][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1079.559683][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1079.560013][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1079.560261][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1079.560542][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1079.560813][ T11] kthread (kernel/kthread.c:388) 
[ 1079.561099][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1079.561346][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1079.561632][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1079.561877][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1079.768593][   T11] ------------[ cut here ]------------
| [ 1079.769439][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1079.769917][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1079.770452][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1079.771550][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1079.772274][   T11] Workqueue: netns cleanup_net
[ 1079.772579][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.772914][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1079.774083][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1079.774434][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1079.774858][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1079.775282][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1079.775718][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880078ba628
[ 1079.776142][   T11] R13: ffff8880078badf8 R14: ffffc900000bfc98 R15: ffff8880078babc0
[ 1079.776595][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1079.777132][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1079.777515][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1079.777996][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1079.778480][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1079.778933][   T11] Call Trace:
[ 1079.779144][   T11]  <TASK>
[ 1079.779338][ T11] ? __warn (kernel/panic.c:677) 
[ 1079.779579][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1079.779859][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.780201][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1079.780470][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1079.780743][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1079.781033][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1079.781328][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1079.781641][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.782040][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1079.782362][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1079.782714][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1079.783063][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1079.783366][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1079.783719][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1079.784038][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1079.784399][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1079.784717][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1079.785092][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1079.785377][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1079.785742][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1079.786037][ T11] kthread (kernel/kthread.c:388) 
[ 1079.786267][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1079.786514][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1079.786790][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1079.787047][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1079.979318][   T11] ------------[ cut here ]------------
| [ 1079.979631][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1079.980023][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1079.980585][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1079.981905][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1079.982598][   T11] Workqueue: netns cleanup_net
[ 1079.982972][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.983328][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1079.984484][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1079.984892][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1079.985426][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1079.985933][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1079.986428][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800bcaa628
[ 1079.986987][   T11] R13: ffff88800bcaadf8 R14: ffffc900000bfc98 R15: ffff88800bcaabc0
[ 1079.987439][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1079.988000][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1079.988345][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa003 CR4: 00000000001706f0
[ 1079.988774][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1079.989314][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1079.989824][   T11] Call Trace:
[ 1079.990033][   T11]  <TASK>
[ 1079.990216][ T11] ? __warn (kernel/panic.c:677) 
[ 1079.990554][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1079.990847][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.991180][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1079.991459][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1079.991809][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1079.992089][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1079.992406][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1079.992695][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1079.993124][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1079.993396][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1079.993735][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1079.994036][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1079.994391][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1079.994680][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1079.994996][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1079.995313][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1079.995697][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1079.996037][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1079.996335][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1079.996624][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1079.997045][ T11] kthread (kernel/kthread.c:388) 
[ 1079.997297][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1079.997581][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1079.997874][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1079.998233][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1080.200675][   T11] ------------[ cut here ]------------
| [ 1080.201018][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1080.201391][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1080.201872][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1080.202890][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1080.203592][   T11] Workqueue: netns cleanup_net
[ 1080.203863][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1080.204210][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1080.205380][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1080.205739][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1080.206189][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1080.206650][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1080.207107][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ab3a628
[ 1080.207576][   T11] R13: ffff88800ab3adf8 R14: ffffc900000bfc98 R15: ffff88800ab3abc0
[ 1080.208053][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1080.208556][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1080.208921][   T11] CR2: 00007f1226015270 CR3: 0000000005556002 CR4: 00000000001706f0
[ 1080.209358][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1080.209779][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1080.210264][   T11] Call Trace:
[ 1080.210440][   T11]  <TASK>
[ 1080.210598][ T11] ? __warn (kernel/panic.c:677) 
[ 1080.210816][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1080.211099][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1080.211416][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1080.211687][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1080.211937][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1080.212203][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1080.212491][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1080.212753][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1080.213056][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1080.213310][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1080.213635][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1080.213897][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1080.214161][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1080.214451][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1080.214744][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1080.215032][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1080.215322][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1080.215692][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1080.215952][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1080.216239][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1080.216541][ T11] kthread (kernel/kthread.c:388) 
[ 1080.216780][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1080.217062][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1080.217331][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1080.217585][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1101.833338][   T11] ------------[ cut here ]------------
| [ 1101.833675][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1101.834192][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1101.834698][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1101.835730][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1101.836440][   T11] Workqueue: netns cleanup_net
[ 1101.836735][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1101.837103][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1101.838184][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1101.838504][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1101.838997][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1101.839528][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1101.839955][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800d72a628
[ 1101.840387][   T11] R13: ffff88800d72adf8 R14: ffffc900000bfc98 R15: ffff88800d72abc0
[ 1101.840874][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1101.841407][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1101.841831][   T11] CR2: 00007ff9bc16d000 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1101.842294][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1101.842844][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1101.843500][   T11] Call Trace:
[ 1101.843827][   T11]  <TASK>
[ 1101.844122][ T11] ? __warn (kernel/panic.c:677) 
[ 1101.844520][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1101.844976][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1101.845444][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1101.845851][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1101.846269][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1101.846704][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1101.847160][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1101.847550][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1101.848039][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1101.848466][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1101.848927][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1101.849325][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1101.849765][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1101.850227][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1101.850650][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1101.851100][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1101.851552][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1101.852059][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1101.852426][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1101.852782][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1101.853180][ T11] kthread (kernel/kthread.c:388) 
[ 1101.853495][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1101.853834][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1101.854123][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1101.854478][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1102.044001][   T11] ------------[ cut here ]------------
| [ 1102.044373][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1102.044750][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1102.045263][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1102.046548][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1102.047304][   T11] Workqueue: netns cleanup_net
[ 1102.047600][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.048001][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1102.049124][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1102.049515][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1102.049989][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1102.050445][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1102.050910][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007a82628
[ 1102.051401][   T11] R13: ffff888007a82df8 R14: ffffc900000bfc98 R15: ffff888007a82bc0
[ 1102.051835][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1102.052395][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1102.052767][   T11] CR2: 00007feacc049270 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1102.053221][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1102.053739][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1102.054363][   T11] Call Trace:
[ 1102.054677][   T11]  <TASK>
[ 1102.054973][ T11] ? __warn (kernel/panic.c:677) 
[ 1102.055364][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1102.055842][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.056324][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1102.056770][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1102.057179][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1102.057631][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1102.058103][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1102.058496][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.058988][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1102.059423][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1102.059889][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1102.060310][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1102.060733][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1102.061173][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1102.061570][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1102.062028][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1102.062494][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1102.063048][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1102.063479][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1102.063913][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1102.064370][ T11] kthread (kernel/kthread.c:388) 
[ 1102.064685][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1102.064925][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1102.065198][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1102.065479][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1102.254314][   T11] ------------[ cut here ]------------
| [ 1102.254648][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1102.255043][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1102.255598][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1102.256673][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1102.257425][   T11] Workqueue: netns cleanup_net
[ 1102.257731][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.258108][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1102.259594][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1102.260005][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1102.260609][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1102.261219][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1102.261821][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b502628
[ 1102.262585][   T11] R13: ffff88800b502df8 R14: ffffc900000bfc98 R15: ffff88800b502bc0
[ 1102.263253][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1102.264086][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1102.264704][   T11] CR2: 00007fce1f5f7270 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1102.265434][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1102.266155][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1102.266861][   T11] Call Trace:
[ 1102.267066][   T11]  <TASK>
[ 1102.267293][ T11] ? __warn (kernel/panic.c:677) 
[ 1102.267580][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1102.267942][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.268448][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1102.268838][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1102.269191][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1102.269523][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1102.269927][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1102.270253][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.270528][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1102.270804][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1102.271204][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1102.271555][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1102.271922][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1102.272364][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1102.272785][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1102.273244][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1102.273688][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1102.274198][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1102.274610][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1102.275049][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1102.275605][ T11] kthread (kernel/kthread.c:388) 
[ 1102.275971][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1102.276368][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1102.276764][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1102.277188][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1102.482346][   T11] ------------[ cut here ]------------
| [ 1102.482705][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1102.483108][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1102.483699][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1102.484876][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1102.485677][   T11] Workqueue: netns cleanup_net
[ 1102.485998][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.486401][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1102.487482][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1102.487839][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1102.488301][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1102.488727][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1102.489167][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ab62628
[ 1102.489618][   T11] R13: ffff88800ab62df8 R14: ffffc900000bfc98 R15: ffff88800ab62bc0
[ 1102.490167][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1102.490692][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1102.491067][   T11] CR2: 00007f90bc93a000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1102.491496][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1102.491933][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1102.492364][   T11] Call Trace:
[ 1102.492545][   T11]  <TASK>
[ 1102.492714][ T11] ? __warn (kernel/panic.c:677) 
[ 1102.492933][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1102.493198][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.493554][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1102.493884][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1102.494167][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1102.494454][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1102.494793][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1102.495043][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1102.495374][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1102.495749][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1102.496095][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1102.496401][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1102.496703][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1102.497025][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1102.497317][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1102.497716][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1102.498042][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1102.498412][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1102.498721][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1102.499046][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1102.499394][ T11] kthread (kernel/kthread.c:388) 
[ 1102.499687][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1102.499986][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1102.500289][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1102.500620][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1125.072406][   T11] ------------[ cut here ]------------
| [ 1125.072786][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1125.073270][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1125.073845][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1125.075082][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1125.075837][   T11] Workqueue: netns cleanup_net
[ 1125.076136][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.076467][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1125.077625][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1125.077989][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1125.078422][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1125.078861][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1125.079314][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009d7a628
[ 1125.079806][   T11] R13: ffff888009d7adf8 R14: ffffc900000bfc98 R15: ffff888009d7abc0
[ 1125.080321][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1125.080895][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1125.081370][   T11] CR2: 00007f061b4aa270 CR3: 00000000079c6002 CR4: 00000000001706f0
[ 1125.081848][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1125.082394][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1125.082902][   T11] Call Trace:
[ 1125.083102][   T11]  <TASK>
[ 1125.083298][ T11] ? __warn (kernel/panic.c:677) 
[ 1125.083556][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1125.083860][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.084175][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1125.084482][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1125.084739][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1125.085018][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1125.085330][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1125.085614][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.085930][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1125.086225][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1125.086555][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1125.086833][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.087140][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1125.087442][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.087720][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1125.088045][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1125.088314][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1125.088599][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1125.088847][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1125.089107][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1125.089397][ T11] kthread (kernel/kthread.c:388) 
[ 1125.089620][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.089888][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1125.090147][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.090399][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1125.269093][   T11] ------------[ cut here ]------------
| [ 1125.269409][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1125.269787][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1125.270278][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1125.271294][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1125.271939][   T11] Workqueue: netns cleanup_net
[ 1125.272256][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.272583][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1125.273779][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1125.274119][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1125.274535][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1125.274948][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1125.275386][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880076ca628
[ 1125.275807][   T11] R13: ffff8880076cadf8 R14: ffffc900000bfc98 R15: ffff8880076cabc0
[ 1125.276242][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1125.276722][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1125.277082][   T11] CR2: 0000559e2a5121d0 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1125.277514][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1125.277927][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1125.278360][   T11] Call Trace:
[ 1125.278537][   T11]  <TASK>
[ 1125.278696][ T11] ? __warn (kernel/panic.c:677) 
[ 1125.278918][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1125.279183][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.279462][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1125.279754][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1125.280071][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1125.280343][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1125.280657][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1125.280928][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.281214][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1125.281503][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1125.281819][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1125.282100][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.282388][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1125.282692][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.282981][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1125.283271][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1125.283614][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1125.283929][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1125.284206][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1125.284551][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1125.284843][ T11] kthread (kernel/kthread.c:388) 
[ 1125.285081][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.285370][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1125.285652][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.285933][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1125.517787][   T11] ------------[ cut here ]------------
| [ 1125.518255][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1125.518897][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1125.519653][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1125.521315][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1125.522356][   T11] Workqueue: netns cleanup_net
[ 1125.522782][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.523302][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1125.524867][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1125.525359][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1125.526003][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1125.526687][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1125.527381][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880084fa628
[ 1125.528072][   T11] R13: ffff8880084fadf8 R14: ffffc900000bfc98 R15: ffff8880084fabc0
[ 1125.528758][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1125.529493][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1125.530058][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1125.530723][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1125.531380][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1125.531899][   T11] Call Trace:
[ 1125.532116][   T11]  <TASK>
[ 1125.532299][ T11] ? __warn (kernel/panic.c:677) 
[ 1125.532544][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1125.532824][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.533163][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1125.533415][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1125.533694][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1125.533963][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1125.534260][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1125.534532][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.534829][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1125.535091][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1125.535388][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1125.535630][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.535880][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1125.536198][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.536464][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1125.536734][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1125.537008][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1125.537297][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1125.537540][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1125.537819][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1125.538143][ T11] kthread (kernel/kthread.c:388) 
[ 1125.538365][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.538635][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1125.538912][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.539166][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1125.715264][   T11] ------------[ cut here ]------------
| [ 1125.715608][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1125.716001][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1125.716504][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1125.717622][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1125.718376][   T11] Workqueue: netns cleanup_net
[ 1125.718688][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.719061][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1125.720185][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1125.720513][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1125.721005][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1125.721502][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1125.721988][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880078fa628
[ 1125.722463][   T11] R13: ffff8880078fadf8 R14: ffffc900000bfc98 R15: ffff8880078fabc0
[ 1125.722952][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1125.723515][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1125.723923][   T11] CR2: 00007f1df1542000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1125.724414][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1125.724898][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1125.725412][   T11] Call Trace:
[ 1125.725612][   T11]  <TASK>
[ 1125.725800][ T11] ? __warn (kernel/panic.c:677) 
[ 1125.726075][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1125.726376][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.726707][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1125.727008][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1125.727283][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1125.727584][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1125.727900][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1125.728181][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1125.728463][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1125.728717][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1125.729008][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1125.729250][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.729519][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1125.729791][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1125.730064][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1125.730368][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1125.730673][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1125.731017][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1125.731329][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1125.731614][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1125.731930][ T11] kthread (kernel/kthread.c:388) 
[ 1125.732212][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.732499][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1125.732780][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1125.733082][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1148.158767][   T11] ------------[ cut here ]------------
| [ 1148.159132][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1148.159548][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1148.160087][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1148.161303][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1148.162142][   T11] Workqueue: netns cleanup_net
[ 1148.162472][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.162803][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1148.163895][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1148.164265][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1148.164740][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1148.165339][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1148.165899][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880074f2628
[ 1148.166387][   T11] R13: ffff8880074f2df8 R14: ffffc900000bfc98 R15: ffff8880074f2bc0
[ 1148.166930][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1148.167520][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1148.167906][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1148.168401][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1148.168848][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1148.169338][   T11] Call Trace:
[ 1148.169524][   T11]  <TASK>
[ 1148.169688][ T11] ? __warn (kernel/panic.c:677) 
[ 1148.169974][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1148.170269][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.170586][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1148.170856][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1148.171122][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1148.171511][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1148.171830][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1148.172076][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.172363][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1148.172612][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1148.172895][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1148.173159][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.173441][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1148.173728][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.174013][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1148.174327][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1148.174629][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1148.175021][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1148.175386][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1148.175669][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1148.175995][ T11] kthread (kernel/kthread.c:388) 
[ 1148.176259][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.176571][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1148.176860][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.177126][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1148.378603][   T11] ------------[ cut here ]------------
| [ 1148.378942][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1148.379430][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1148.379966][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1148.381363][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1148.382378][   T11] Workqueue: netns cleanup_net
[ 1148.382774][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.383299][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1148.384933][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1148.385433][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1148.386057][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1148.386673][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1148.387295][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880095a2628
[ 1148.387910][   T11] R13: ffff8880095a2df8 R14: ffffc900000bfc98 R15: ffff8880095a2bc0
[ 1148.388563][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1148.389328][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1148.389880][   T11] CR2: 00007f9f65e6f270 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1148.390577][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1148.391292][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1148.391942][   T11] Call Trace:
[ 1148.392245][   T11]  <TASK>
[ 1148.392505][ T11] ? __warn (kernel/panic.c:677) 
[ 1148.392838][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1148.393279][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.393707][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1148.394153][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1148.394535][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1148.394937][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1148.395429][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1148.395833][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.396314][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1148.396732][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1148.397211][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1148.397620][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.398071][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1148.398512][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.398931][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1148.399392][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1148.399859][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1148.400292][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1148.400650][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1148.401035][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1148.401437][ T11] kthread (kernel/kthread.c:388) 
[ 1148.401769][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.402149][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1148.402498][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.402857][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1148.577458][   T11] ------------[ cut here ]------------
| [ 1148.577929][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1148.578368][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1148.578995][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1148.580365][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1148.581138][   T11] Workqueue: netns cleanup_net
[ 1148.581484][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.581854][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1148.582994][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1148.583443][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1148.583950][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1148.584460][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1148.584911][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800751a628
[ 1148.585371][   T11] R13: ffff88800751adf8 R14: ffffc900000bfc98 R15: ffff88800751abc0
[ 1148.585798][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1148.586271][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1148.586629][   T11] CR2: 00007fe3ce205270 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1148.587065][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1148.587557][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1148.588103][   T11] Call Trace:
[ 1148.588300][   T11]  <TASK>
[ 1148.588512][ T11] ? __warn (kernel/panic.c:677) 
[ 1148.588788][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.589173][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1148.589434][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1148.589680][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1148.590002][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1148.590356][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1148.590675][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.591014][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1148.591338][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1148.591692][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1148.592009][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.592321][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1148.592650][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.592975][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1148.593330][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1148.593605][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1148.593912][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1148.594182][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1148.594457][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1148.594744][ T11] kthread (kernel/kthread.c:388) 
[ 1148.594986][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.595253][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1148.595521][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.595819][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1148.803224][   T11] ------------[ cut here ]------------
| [ 1148.803579][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1148.804114][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1148.804664][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1148.805946][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1148.806631][   T11] Workqueue: netns cleanup_net
[ 1148.806889][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.807208][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1148.808237][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1148.808563][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1148.808993][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1148.809427][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1148.809919][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c672628
[ 1148.810487][   T11] R13: ffff88800c672df8 R14: ffffc900000bfc98 R15: ffff88800c672bc0
[ 1148.810992][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1148.811497][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1148.811848][   T11] CR2: 00007fe4bf5dc270 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1148.812439][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1148.812987][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1148.813637][   T11] Call Trace:
[ 1148.814016][   T11]  <TASK>
[ 1148.814275][ T11] ? __warn (kernel/panic.c:677) 
[ 1148.814644][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1148.815055][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.815517][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1148.815970][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1148.816374][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1148.816808][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1148.817256][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1148.817678][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1148.818144][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1148.818566][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1148.819040][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1148.819456][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.819886][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1148.820364][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1148.820796][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1148.821300][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1148.821735][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1148.822229][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1148.822633][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1148.823046][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1148.823431][ T11] kthread (kernel/kthread.c:388) 
[ 1148.823740][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.824106][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1148.824436][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1148.824679][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1170.563115][   T11] ------------[ cut here ]------------
| [ 1170.563444][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1170.563860][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1170.564367][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1170.565502][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1170.566221][   T11] Workqueue: netns cleanup_net
[ 1170.566480][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.566809][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1170.567935][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1170.568298][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1170.568769][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1170.569267][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1170.569747][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b8fa628
[ 1170.570227][   T11] R13: ffff88800b8fadf8 R14: ffffc900000bfc98 R15: ffff88800b8fabc0
[ 1170.570723][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1170.571278][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1170.571662][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa001 CR4: 00000000001706f0
[ 1170.572160][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1170.572656][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1170.573111][   T11] Call Trace:
[ 1170.573308][   T11]  <TASK>
[ 1170.573490][ T11] ? __warn (kernel/panic.c:677) 
[ 1170.573727][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1170.574015][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.574365][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1170.574627][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1170.574875][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1170.575159][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1170.575431][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1170.575670][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.575950][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1170.576213][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1170.576495][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1170.576756][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1170.577058][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1170.577366][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1170.577689][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1170.578025][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1170.578325][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1170.578667][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1170.578943][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1170.579240][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1170.579533][ T11] kthread (kernel/kthread.c:388) 
[ 1170.579774][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1170.580096][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1170.580354][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1170.580648][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1170.728218][   T11] ------------[ cut here ]------------
| [ 1170.728584][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1170.729024][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1170.729580][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1170.730680][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1170.731391][   T11] Workqueue: netns cleanup_net
[ 1170.731696][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.732070][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1170.733139][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1170.733491][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1170.733932][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1170.734424][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1170.734885][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800bc52628
[ 1170.735369][   T11] R13: ffff88800bc52df8 R14: ffffc900000bfc98 R15: ffff88800bc52bc0
[ 1170.735857][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1170.736370][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1170.736736][   T11] CR2: 00007f2a45939000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1170.737174][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1170.737605][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1170.738040][   T11] Call Trace:
[ 1170.738229][   T11]  <TASK>
[ 1170.738388][ T11] ? __warn (kernel/panic.c:677) 
[ 1170.738641][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1170.738949][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.739275][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1170.739556][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1170.739805][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1170.740092][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1170.740399][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1170.740680][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.741009][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1170.741328][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1170.741638][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1170.741924][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1170.742211][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1170.742491][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1170.742743][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1170.743031][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1170.743305][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1170.743602][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1170.743855][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1170.744128][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1170.744409][ T11] kthread (kernel/kthread.c:388) 
[ 1170.744634][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1170.744885][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1170.745153][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1170.745400][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1170.953139][   T11] ------------[ cut here ]------------
| [ 1170.953454][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1170.953853][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1170.954350][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1170.955529][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1170.956270][   T11] Workqueue: netns cleanup_net
[ 1170.956527][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.956873][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1170.958030][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1170.958395][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1170.958892][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1170.959420][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1170.959928][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800272a628
[ 1170.960459][   T11] R13: ffff88800272adf8 R14: ffffc900000bfc98 R15: ffff88800272abc0
[ 1170.961012][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1170.961584][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1170.962025][   T11] CR2: 00007f2a45939000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1170.962445][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1170.962867][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1170.963316][   T11] Call Trace:
[ 1170.963495][   T11]  <TASK>
[ 1170.963654][ T11] ? __warn (kernel/panic.c:677) 
[ 1170.963874][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1170.964156][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.964513][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1170.964802][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1170.965095][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1170.965513][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1170.965822][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1170.966139][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1170.966444][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1170.966768][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1170.967124][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1170.967404][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1170.967745][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1170.968056][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1170.968411][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1170.968760][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1170.969216][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1170.969536][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1170.969879][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1170.970237][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1170.970543][ T11] kthread (kernel/kthread.c:388) 
[ 1170.970849][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1170.971183][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1170.971485][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1170.971782][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1171.171680][   T11] ------------[ cut here ]------------
| [ 1171.172105][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1171.172525][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1171.173073][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1171.174147][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1171.174783][   T11] Workqueue: netns cleanup_net
[ 1171.175050][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1171.175384][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1171.176438][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1171.176764][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1171.177192][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1171.177623][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1171.178150][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800792a628
[ 1171.178615][   T11] R13: ffff88800792adf8 R14: ffffc900000bfc98 R15: ffff88800792abc0
[ 1171.179125][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1171.179675][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1171.180070][   T11] CR2: 00007fcd1263da30 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1171.180550][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1171.181049][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1171.181530][   T11] Call Trace:
[ 1171.181718][   T11]  <TASK>
[ 1171.181916][ T11] ? __warn (kernel/panic.c:677) 
[ 1171.182181][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1171.182462][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1171.182783][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1171.183087][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1171.183342][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1171.183599][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1171.183944][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1171.184214][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1171.184505][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1171.184816][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1171.185164][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1171.185404][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1171.185653][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1171.185916][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1171.186172][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1171.186444][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1171.186758][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1171.187085][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1171.187367][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1171.187655][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1171.187968][ T11] kthread (kernel/kthread.c:388) 
[ 1171.188200][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1171.188474][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1171.188746][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1171.189011][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1193.055264][   T11] ------------[ cut here ]------------
| [ 1193.055648][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1193.056077][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1193.056603][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1193.057707][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1193.058356][   T11] Workqueue: netns cleanup_net
[ 1193.058614][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.058933][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1193.059956][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1193.060298][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1193.060758][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1193.061269][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1193.061716][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ada2628
[ 1193.062144][   T11] R13: ffff88800ada2df8 R14: ffffc900000bfc98 R15: ffff88800ada2bc0
[ 1193.062563][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1193.063035][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1193.063389][   T11] CR2: 00007fb3957be000 CR3: 00000000079c6001 CR4: 00000000001706f0
[ 1193.063810][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1193.064348][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1193.064819][   T11] Call Trace:
[ 1193.065068][   T11]  <TASK>
[ 1193.065228][ T11] ? __warn (kernel/panic.c:677) 
[ 1193.065447][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1193.065738][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.066087][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1193.066356][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1193.066652][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1193.066923][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1193.067221][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1193.067503][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.067868][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1193.068151][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1193.068472][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1193.068777][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.069053][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1193.069354][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.069651][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1193.069992][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1193.070291][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1193.070659][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1193.070916][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1193.071212][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1193.071553][ T11] kthread (kernel/kthread.c:388) 
[ 1193.071785][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.072086][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1193.072365][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.072637][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1193.300419][   T11] ------------[ cut here ]------------
| [ 1193.300751][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1193.301141][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1193.301632][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1193.302725][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1193.303501][   T11] Workqueue: netns cleanup_net
[ 1193.303764][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.304150][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1193.305293][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1193.305742][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1193.306319][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1193.306945][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1193.307569][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888003f1a628
[ 1193.308034][   T11] R13: ffff888003f1adf8 R14: ffffc900000bfc98 R15: ffff888003f1abc0
[ 1193.308504][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1193.309172][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1193.309722][   T11] CR2: 00007f6ab7b79000 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1193.310395][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1193.311048][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1193.311704][   T11] Call Trace:
[ 1193.312024][   T11]  <TASK>
[ 1193.312257][ T11] ? __warn (kernel/panic.c:677) 
[ 1193.312620][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1193.313043][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.313499][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1193.313912][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1193.314309][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1193.314701][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1193.315180][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1193.315588][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.316052][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1193.316443][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1193.316905][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1193.317327][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.317742][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1193.318181][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.318594][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1193.319076][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1193.319500][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1193.319923][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1193.320306][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1193.320671][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1193.321078][ T11] kthread (kernel/kthread.c:388) 
[ 1193.321398][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.321747][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1193.322109][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.322451][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1193.536377][   T11] ------------[ cut here ]------------
| [ 1193.536690][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1193.537187][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1193.537752][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1193.538982][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1193.539692][   T11] Workqueue: netns cleanup_net
[ 1193.540005][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.540354][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1193.541560][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1193.541883][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1193.542308][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1193.542727][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1193.543155][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800833a628
[ 1193.543629][   T11] R13: ffff88800833adf8 R14: ffffc900000bfc98 R15: ffff88800833abc0
[ 1193.544288][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1193.544916][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1193.545293][   T11] CR2: 00007f5dc3ec7000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1193.545728][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1193.546222][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1193.546834][   T11] Call Trace:
[ 1193.547161][   T11]  <TASK>
[ 1193.547390][ T11] ? __warn (kernel/panic.c:677) 
[ 1193.547763][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1193.548036][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.548458][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1193.548873][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1193.549285][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1193.549609][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1193.549907][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1193.550185][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.550560][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1193.550828][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1193.551189][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1193.551479][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.551759][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1193.552120][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.552410][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1193.552745][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1193.553070][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1193.553420][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1193.553723][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1193.554040][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1193.554382][ T11] kthread (kernel/kthread.c:388) 
[ 1193.554655][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.554939][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1193.555234][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.555523][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1193.754431][   T11] ------------[ cut here ]------------
| [ 1193.754919][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1193.755568][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1193.756417][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1193.758018][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1193.759005][   T11] Workqueue: netns cleanup_net
[ 1193.759458][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.759909][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1193.761050][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1193.761570][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1193.762200][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1193.762813][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1193.763470][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800cbe2628
[ 1193.764085][   T11] R13: ffff88800cbe2df8 R14: ffffc900000bfc98 R15: ffff88800cbe2bc0
[ 1193.764690][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1193.765397][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1193.765900][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1193.766574][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1193.767254][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1193.767908][   T11] Call Trace:
[ 1193.768233][   T11]  <TASK>
[ 1193.768529][ T11] ? __warn (kernel/panic.c:677) 
[ 1193.768850][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1193.769271][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.769724][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1193.770120][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1193.770381][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1193.770687][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1193.771051][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1193.771410][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1193.771821][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1193.772230][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1193.772688][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1193.773096][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.773510][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1193.773955][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1193.774402][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1193.774858][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1193.775375][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1193.775799][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1193.776171][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1193.776543][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1193.776941][ T11] kthread (kernel/kthread.c:388) 
[ 1193.777272][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.777635][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1193.778074][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1193.778508][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1215.526619][   T11] ------------[ cut here ]------------
| [ 1215.527166][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1215.527770][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1215.528702][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1215.530374][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1215.531413][   T11] Workqueue: netns cleanup_net
[ 1215.531801][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.532285][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1215.533811][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1215.534306][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1215.535022][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1215.535712][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1215.536436][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880096aa628
[ 1215.537142][   T11] R13: ffff8880096aadf8 R14: ffffc900000bfc98 R15: ffff8880096aabc0
[ 1215.537828][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1215.538541][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1215.539069][   T11] CR2: 00007f54b9d53000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1215.539696][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1215.540330][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1215.541056][   T11] Call Trace:
[ 1215.541412][   T11]  <TASK>
[ 1215.541689][ T11] ? __warn (kernel/panic.c:677) 
[ 1215.542076][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1215.542539][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.542955][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1215.543395][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1215.543811][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1215.544238][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1215.544679][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1215.545106][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.545599][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1215.546059][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1215.546527][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1215.546954][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1215.547426][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1215.547880][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1215.548308][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1215.548781][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1215.549253][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1215.549741][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1215.550162][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1215.550609][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1215.551094][ T11] kthread (kernel/kthread.c:388) 
[ 1215.551474][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1215.551882][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1215.552307][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1215.552740][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1215.796773][   T11] ------------[ cut here ]------------
| [ 1215.797105][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1215.797485][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1215.798042][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1215.799176][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1215.799822][   T11] Workqueue: netns cleanup_net
[ 1215.800141][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.800493][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1215.801671][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1215.802045][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1215.802525][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1215.803031][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1215.803538][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006412628
[ 1215.804009][   T11] R13: ffff888006412df8 R14: ffffc900000bfc98 R15: ffff888006412bc0
[ 1215.804491][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1215.805036][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1215.805429][   T11] CR2: 00007f3576097000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1215.805936][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1215.806441][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1215.806936][   T11] Call Trace:
[ 1215.807145][   T11]  <TASK>
[ 1215.807325][ T11] ? __warn (kernel/panic.c:677) 
[ 1215.807545][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1215.807801][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.808091][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1215.808346][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1215.808578][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1215.808824][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1215.809099][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1215.809352][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.809686][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1215.810003][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1215.810321][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1215.810613][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1215.810906][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1215.811217][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1215.811509][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1215.811837][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1215.812146][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1215.812517][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1215.812771][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1215.813072][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1215.813422][ T11] kthread (kernel/kthread.c:388) 
[ 1215.813659][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1215.813940][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1215.814235][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1215.814534][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1215.982093][   T11] ------------[ cut here ]------------
| [ 1215.982467][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1215.982912][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1215.983521][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1215.984595][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1215.985311][   T11] Workqueue: netns cleanup_net
[ 1215.985628][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.985996][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1215.987049][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1215.987427][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1215.987913][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1215.988387][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1215.988837][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800cb8a628
[ 1215.989314][   T11] R13: ffff88800cb8adf8 R14: ffffc900000bfc98 R15: ffff88800cb8abc0
[ 1215.989796][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1215.990322][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1215.990700][   T11] CR2: 00007f3576399270 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1215.991178][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1215.991664][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1215.992133][   T11] Call Trace:
[ 1215.992338][   T11]  <TASK>
[ 1215.992501][ T11] ? __warn (kernel/panic.c:677) 
[ 1215.992761][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1215.993083][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.993404][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1215.993680][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1215.993983][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1215.994286][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1215.994600][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1215.994843][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1215.995138][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1215.995390][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1215.995672][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1215.995912][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1215.996169][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1215.996432][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1215.996688][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1215.996973][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1215.997237][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1215.997573][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1215.997873][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1215.998194][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1215.998515][ T11] kthread (kernel/kthread.c:388) 
[ 1215.998769][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1215.999083][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1215.999372][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1215.999683][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1216.207065][   T11] ------------[ cut here ]------------
| [ 1216.207424][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1216.207797][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1216.208295][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1216.209306][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1216.209947][   T11] Workqueue: netns cleanup_net
[ 1216.210213][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1216.210523][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1216.211547][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1216.211870][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1216.212323][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1216.212798][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1216.213279][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880085aa628
[ 1216.213757][   T11] R13: ffff8880085aadf8 R14: ffffc900000bfc98 R15: ffff8880085aabc0
[ 1216.214232][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1216.214744][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1216.215194][   T11] CR2: 00007f2bb86bb270 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1216.215704][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1216.216172][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1216.216669][   T11] Call Trace:
[ 1216.216875][   T11]  <TASK>
[ 1216.217073][ T11] ? __warn (kernel/panic.c:677) 
[ 1216.217347][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1216.217661][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1216.217995][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1216.218316][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1216.218604][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1216.218911][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1216.219266][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1216.219576][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1216.219911][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1216.220201][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1216.220576][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1216.220893][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1216.221230][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1216.221551][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1216.221871][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1216.222218][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1216.222571][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1216.222911][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1216.223202][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1216.223471][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1216.223770][ T11] kthread (kernel/kthread.c:388) 
[ 1216.224001][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1216.224264][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1216.224617][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1216.224942][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1236.729755][   T11] ------------[ cut here ]------------
| [ 1236.730099][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1236.730487][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1236.731029][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1236.732056][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1236.732735][   T11] Workqueue: netns cleanup_net
[ 1236.733042][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1236.733388][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1236.734526][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1236.734886][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1236.735380][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1236.735905][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1236.736404][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800adca628
[ 1236.736897][   T11] R13: ffff88800adcadf8 R14: ffffc900000bfc98 R15: ffff88800adcabc0
[ 1236.737393][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1236.737941][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1236.738346][   T11] CR2: 0000559e2a7ad478 CR3: 00000000079c6001 CR4: 00000000001706f0
[ 1236.738863][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1236.739357][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1236.739845][   T11] Call Trace:
[ 1236.740051][   T11]  <TASK>
[ 1236.740253][ T11] ? __warn (kernel/panic.c:677) 
[ 1236.740527][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1236.740819][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1236.741133][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1236.741442][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1236.741688][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1236.741943][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1236.742220][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1236.742472][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1236.742768][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1236.743037][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1236.743326][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1236.743622][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1236.743924][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1236.744226][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1236.744526][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1236.744915][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1236.745343][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1236.745718][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1236.746015][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1236.746303][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1236.746609][ T11] kthread (kernel/kthread.c:388) 
[ 1236.746902][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1236.747183][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1236.747463][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1236.747794][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1236.928111][   T11] ------------[ cut here ]------------
| [ 1236.928447][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1236.928814][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1236.929391][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1236.930493][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1236.931232][   T11] Workqueue: netns cleanup_net
[ 1236.931505][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1236.931866][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1236.933012][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1236.933338][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1236.933777][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1236.934207][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1236.934628][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006342628
[ 1236.935080][   T11] R13: ffff888006342df8 R14: ffffc900000bfc98 R15: ffff888006342bc0
[ 1236.935516][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1236.936019][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1236.936413][   T11] CR2: 00007f50e60912a8 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1236.936862][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1236.937357][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1236.937831][   T11] Call Trace:
[ 1236.938027][   T11]  <TASK>
[ 1236.938205][ T11] ? __warn (kernel/panic.c:677) 
[ 1236.938507][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1236.938870][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1236.939199][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1236.939471][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1236.939760][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1236.940129][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1236.940431][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1236.940673][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1236.941022][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1236.941296][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1236.941612][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1236.941869][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1236.942152][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1236.942422][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1236.942734][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1236.943038][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1236.943318][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1236.943653][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1236.944030][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1236.944425][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1236.944803][ T11] kthread (kernel/kthread.c:388) 
[ 1236.945144][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1236.945485][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1236.945804][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1236.946124][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1237.130115][   T11] ------------[ cut here ]------------
| [ 1237.130461][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1237.130874][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1237.131443][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1237.132485][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1237.133134][   T11] Workqueue: netns cleanup_net
[ 1237.133393][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1237.133755][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1237.135169][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1237.135540][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1237.135971][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1237.136462][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1237.136931][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800867a628
[ 1237.137408][   T11] R13: ffff88800867adf8 R14: ffffc900000bfc98 R15: ffff88800867abc0
[ 1237.137881][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1237.138407][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1237.138791][   T11] CR2: 00007fb52fd26270 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1237.139253][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1237.139702][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1237.140179][   T11] Call Trace:
[ 1237.140375][   T11]  <TASK>
[ 1237.140551][ T11] ? __warn (kernel/panic.c:677) 
[ 1237.140793][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1237.141056][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1237.141342][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1237.141583][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1237.141812][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1237.142068][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1237.142342][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1237.142576][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1237.142855][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1237.143107][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1237.143396][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1237.143637][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1237.143931][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1237.144214][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1237.144526][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1237.144846][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1237.145161][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1237.145478][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1237.145747][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1237.146030][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1237.146327][ T11] kthread (kernel/kthread.c:388) 
[ 1237.146559][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1237.146831][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1237.147091][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1237.147386][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1237.335539][   T11] ------------[ cut here ]------------
| [ 1237.336035][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1237.336598][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1237.337332][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1237.338692][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1237.339542][   T11] Workqueue: netns cleanup_net
[ 1237.339901][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1237.340239][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1237.341377][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1237.341745][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1237.342245][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1237.342660][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1237.343081][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006ac2628
[ 1237.343498][   T11] R13: ffff888006ac2df8 R14: ffffc900000bfc98 R15: ffff888006ac2bc0
[ 1237.343918][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1237.344396][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1237.344818][   T11] CR2: 00007f45d0a1a270 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1237.345283][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1237.345737][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1237.346174][   T11] Call Trace:
[ 1237.346371][   T11]  <TASK>
[ 1237.346556][ T11] ? __warn (kernel/panic.c:677) 
[ 1237.346803][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1237.347114][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1237.347432][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1237.347686][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1237.347943][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1237.348265][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1237.348553][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1237.348830][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1237.349142][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1237.349390][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1237.349677][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1237.349914][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1237.350168][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1237.350431][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1237.350676][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1237.350947][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1237.351219][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1237.351505][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1237.351748][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1237.352039][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1237.352335][ T11] kthread (kernel/kthread.c:388) 
[ 1237.352587][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1237.352869][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1237.353150][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1237.353435][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1257.148269][   T11] ------------[ cut here ]------------
| [ 1257.148614][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1257.149039][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1257.149618][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1257.150869][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1257.151647][   T11] Workqueue: netns cleanup_net
[ 1257.151999][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.152346][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1257.153652][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1257.154074][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1257.154532][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1257.155108][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1257.155616][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006542628
[ 1257.156190][   T11] R13: ffff888006542df8 R14: ffffc900000bfc98 R15: ffff888006542bc0
[ 1257.156686][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1257.157272][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1257.157706][   T11] CR2: 00007f84ef41f000 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1257.158256][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1257.158741][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1257.159169][   T11] Call Trace:
[ 1257.159348][   T11]  <TASK>
[ 1257.159507][ T11] ? __warn (kernel/panic.c:677) 
[ 1257.159724][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1257.159989][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.160267][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1257.160510][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1257.160739][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1257.160994][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1257.161265][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1257.161573][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.161910][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1257.162220][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1257.162568][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1257.162805][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.163108][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1257.163373][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.163629][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1257.163905][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1257.164177][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1257.164467][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1257.164727][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1257.164988][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1257.165261][ T11] kthread (kernel/kthread.c:388) 
[ 1257.165532][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.165812][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1257.166116][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.166399][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1257.358160][   T11] ------------[ cut here ]------------
| [ 1257.358495][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1257.358923][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1257.359591][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1257.360931][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1257.361859][   T11] Workqueue: netns cleanup_net
[ 1257.362244][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.362719][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1257.364128][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1257.364550][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1257.365120][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1257.365652][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1257.366144][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009502628
[ 1257.366559][   T11] R13: ffff888009502df8 R14: ffffc900000bfc98 R15: ffff888009502bc0
[ 1257.366979][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1257.367500][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1257.367877][   T11] CR2: 00007f69b3674000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1257.368447][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1257.368981][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1257.369568][   T11] Call Trace:
[ 1257.369842][   T11]  <TASK>
[ 1257.370070][ T11] ? __warn (kernel/panic.c:677) 
[ 1257.370429][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1257.370803][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.371234][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1257.371604][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1257.371979][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1257.372350][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1257.372717][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1257.373094][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.373505][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1257.373881][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1257.374293][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1257.374668][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.375013][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1257.375411][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.375783][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1257.376139][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1257.376437][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1257.376739][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1257.377007][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1257.377265][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1257.377538][ T11] kthread (kernel/kthread.c:388) 
[ 1257.377755][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.378012][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1257.378249][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.378519][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1257.560431][   T11] ------------[ cut here ]------------
| [ 1257.560739][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1257.561134][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1257.561624][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1257.562651][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1257.563368][   T11] Workqueue: netns cleanup_net
[ 1257.563648][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.563998][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1257.565043][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1257.565385][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1257.565800][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1257.566302][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1257.566787][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c972628
[ 1257.567243][   T11] R13: ffff88800c972df8 R14: ffffc900000bfc98 R15: ffff88800c972bc0
[ 1257.567717][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1257.568225][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1257.568611][   T11] CR2: 0000559e2a91e598 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1257.569075][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1257.569527][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1257.570012][   T11] Call Trace:
[ 1257.570192][   T11]  <TASK>
[ 1257.570368][ T11] ? __warn (kernel/panic.c:677) 
[ 1257.570599][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1257.570920][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.571235][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1257.571514][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1257.571771][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1257.572052][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1257.572327][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1257.572568][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.572857][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1257.573124][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1257.573408][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1257.573654][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.573927][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1257.574207][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.574484][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1257.574824][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1257.575141][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1257.575455][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1257.575722][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1257.576020][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1257.576332][ T11] kthread (kernel/kthread.c:388) 
[ 1257.576561][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.576844][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1257.577127][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.577384][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1257.783390][   T11] ------------[ cut here ]------------
| [ 1257.783723][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1257.784137][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1257.784655][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1257.785745][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1257.786433][   T11] Workqueue: netns cleanup_net
[ 1257.786722][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.787058][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1257.788233][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1257.788578][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1257.789016][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1257.789476][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1257.789944][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b57a628
[ 1257.790413][   T11] R13: ffff88800b57adf8 R14: ffffc900000bfc98 R15: ffff88800b57abc0
[ 1257.790874][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1257.791374][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1257.791720][   T11] CR2: 0000559e2a7adc88 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1257.792140][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1257.792553][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1257.792974][   T11] Call Trace:
[ 1257.793151][   T11]  <TASK>
[ 1257.793311][ T11] ? __warn (kernel/panic.c:677) 
[ 1257.793534][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1257.793789][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.794143][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1257.794404][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1257.794647][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1257.794948][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1257.795228][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1257.795492][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1257.795793][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1257.796068][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1257.796370][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1257.796659][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.796912][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1257.797184][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1257.797448][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1257.797744][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1257.798030][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1257.798336][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1257.798587][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1257.798851][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1257.799157][ T11] kthread (kernel/kthread.c:388) 
[ 1257.799399][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.799686][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1257.799952][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1257.800232][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1277.837099][   T11] ------------[ cut here ]------------
| [ 1277.837597][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1277.838180][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1277.838909][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1277.840442][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1277.841444][   T11] Workqueue: netns cleanup_net
[ 1277.841885][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1277.842371][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1277.843951][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1277.844486][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1277.845120][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1277.845771][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1277.846439][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880083aa628
[ 1277.847106][   T11] R13: ffff8880083aadf8 R14: ffffc900000bfc98 R15: ffff8880083aabc0
[ 1277.847739][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1277.848485][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1277.849010][   T11] CR2: 0000559e2a511dec CR3: 0000000024134005 CR4: 00000000001706f0
[ 1277.849624][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1277.850262][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1277.850885][   T11] Call Trace:
[ 1277.851155][   T11]  <TASK>
[ 1277.851385][ T11] ? __warn (kernel/panic.c:677) 
[ 1277.851710][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1277.852102][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1277.852512][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1277.852876][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1277.853284][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1277.853730][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1277.854173][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1277.854554][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1277.855099][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1277.855470][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1277.855930][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1277.856335][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1277.856734][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1277.857174][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1277.857582][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1277.858040][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1277.858457][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1277.858947][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1277.859338][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1277.859747][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1277.860215][ T11] kthread (kernel/kthread.c:388) 
[ 1277.860559][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1277.860972][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1277.861365][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1277.861765][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1278.071552][   T11] ------------[ cut here ]------------
| [ 1278.071953][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1278.072395][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1278.072954][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1278.074174][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1278.075081][   T11] Workqueue: netns cleanup_net
[ 1278.075366][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.075803][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1278.077007][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1278.077376][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1278.077813][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1278.078287][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1278.078765][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009f02628
[ 1278.079187][   T11] R13: ffff888009f02df8 R14: ffffc900000bfc98 R15: ffff888009f02bc0
[ 1278.079609][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1278.080114][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1278.080498][   T11] CR2: 00007f3b2863c270 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1278.080981][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1278.081458][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1278.081972][   T11] Call Trace:
[ 1278.082152][   T11]  <TASK>
[ 1278.082398][ T11] ? __warn (kernel/panic.c:677) 
[ 1278.082697][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1278.082991][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.083269][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1278.083571][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1278.083815][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1278.084114][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1278.084397][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1278.084647][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.084949][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1278.085230][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1278.085572][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1278.085815][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1278.086079][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1278.086356][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1278.086610][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1278.086889][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1278.087168][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1278.087468][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1278.087736][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1278.087995][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1278.088264][ T11] kthread (kernel/kthread.c:388) 
[ 1278.088489][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1278.088805][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1278.089092][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1278.089416][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1278.292319][   T11] ------------[ cut here ]------------
| [ 1278.292670][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1278.293098][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1278.293659][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1278.295185][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1278.296153][   T11] Workqueue: netns cleanup_net
[ 1278.296552][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.297021][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1278.298526][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1278.299016][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1278.299641][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1278.300269][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1278.300912][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c50a628
[ 1278.301589][   T11] R13: ffff88800c50adf8 R14: ffffc900000bfc98 R15: ffff88800c50abc0
[ 1278.302267][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1278.303008][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1278.303566][   T11] CR2: 00007feeb6a23000 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1278.304231][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1278.304899][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1278.305549][   T11] Call Trace:
[ 1278.305849][   T11]  <TASK>
[ 1278.306112][ T11] ? __warn (kernel/panic.c:677) 
[ 1278.306448][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1278.306849][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.307317][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1278.307688][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1278.308062][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1278.308476][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1278.308872][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1278.309235][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.309652][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1278.310037][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1278.310462][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1278.310816][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1278.311207][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1278.311651][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1278.312055][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1278.312536][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1278.312975][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1278.313445][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1278.313867][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1278.314289][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1278.314750][ T11] kthread (kernel/kthread.c:388) 
[ 1278.315116][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1278.315502][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1278.315877][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1278.316297][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1278.523474][   T11] ------------[ cut here ]------------
| [ 1278.523982][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1278.524560][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1278.525412][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1278.527029][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1278.528031][   T11] Workqueue: netns cleanup_net
[ 1278.528412][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.528866][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1278.530298][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1278.530624][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1278.531121][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1278.531628][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1278.532087][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009ae2628
[ 1278.532553][   T11] R13: ffff888009ae2df8 R14: ffffc900000bfc98 R15: ffff888009ae2bc0
[ 1278.533030][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1278.533510][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1278.533911][   T11] CR2: 00007ff0f4996000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1278.534407][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1278.534878][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1278.535349][   T11] Call Trace:
[ 1278.535541][   T11]  <TASK>
[ 1278.535730][ T11] ? __warn (kernel/panic.c:677) 
[ 1278.536003][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1278.536315][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.536616][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1278.536917][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1278.537222][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1278.537512][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1278.537811][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1278.538104][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1278.538432][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1278.538717][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1278.539046][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1278.539380][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1278.539690][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1278.539995][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1278.540244][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1278.540516][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1278.540782][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1278.541074][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1278.541318][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1278.541573][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1278.541844][ T11] kthread (kernel/kthread.c:388) 
[ 1278.542070][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1278.542343][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1278.542616][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1278.542898][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1298.453308][   T11] ------------[ cut here ]------------
| [ 1298.453639][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1298.454027][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1298.454529][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1298.455558][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1298.456253][   T11] Workqueue: netns cleanup_net
[ 1298.456514][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.456916][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1298.458098][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1298.458477][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1298.458972][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1298.459464][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1298.459924][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009c2a628
[ 1298.460429][   T11] R13: ffff888009c2adf8 R14: ffffc900000bfc98 R15: ffff888009c2abc0
[ 1298.460886][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1298.461449][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1298.461882][   T11] CR2: 00007f8720c85000 CR3: 00000000079c6003 CR4: 00000000001706f0
[ 1298.462472][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1298.463059][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1298.463525][   T11] Call Trace:
[ 1298.463730][   T11]  <TASK>
[ 1298.463913][ T11] ? __warn (kernel/panic.c:677) 
[ 1298.464154][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1298.464458][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.464775][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1298.465038][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1298.465270][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1298.465537][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1298.465879][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1298.466253][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.466562][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1298.466816][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1298.467145][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1298.467437][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1298.467704][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1298.468036][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1298.468322][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1298.468611][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1298.468969][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1298.469288][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1298.469554][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1298.469861][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1298.470173][ T11] kthread (kernel/kthread.c:388) 
[ 1298.470409][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1298.470731][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1298.471000][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1298.471283][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1298.644209][   T11] ------------[ cut here ]------------
| [ 1298.644726][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1298.645341][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1298.646069][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1298.647518][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1298.648275][   T11] Workqueue: netns cleanup_net
[ 1298.648582][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.648918][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1298.650250][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1298.650628][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1298.651095][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1298.651586][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1298.652066][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006f82628
[ 1298.652524][   T11] R13: ffff888006f82df8 R14: ffffc900000bfc98 R15: ffff888006f82bc0
[ 1298.653016][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1298.653526][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1298.653870][   T11] CR2: 00007f57e7229270 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1298.654289][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1298.654737][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1298.655160][   T11] Call Trace:
[ 1298.655337][   T11]  <TASK>
[ 1298.655507][ T11] ? __warn (kernel/panic.c:677) 
[ 1298.655727][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1298.655985][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.656265][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1298.656545][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1298.656810][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1298.657089][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1298.657400][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1298.657682][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.657991][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1298.658266][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1298.658581][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1298.658848][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1298.659132][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1298.659420][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1298.659703][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1298.660011][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1298.660316][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1298.660652][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1298.660920][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1298.661211][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1298.661502][ T11] kthread (kernel/kthread.c:388) 
[ 1298.661768][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1298.662038][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1298.662283][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1298.662589][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1298.856819][   T11] ------------[ cut here ]------------
| [ 1298.857162][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1298.857542][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1298.858036][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1298.859206][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1298.859886][   T11] Workqueue: netns cleanup_net
[ 1298.860244][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.860560][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1298.861811][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1298.862269][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1298.862746][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1298.863270][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1298.863754][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888002842628
[ 1298.864246][   T11] R13: ffff888002842df8 R14: ffffc900000bfc98 R15: ffff888002842bc0
[ 1298.864760][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1298.865283][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1298.865716][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1298.866245][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1298.866781][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1298.867295][   T11] Call Trace:
[ 1298.867547][   T11]  <TASK>
[ 1298.867744][ T11] ? __warn (kernel/panic.c:677) 
[ 1298.867998][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1298.868355][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.868678][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1298.868940][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1298.869185][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1298.869438][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1298.869711][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1298.869951][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1298.870254][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1298.870503][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1298.870863][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1298.871169][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1298.871481][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1298.871794][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1298.872108][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1298.872402][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1298.872777][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1298.873109][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1298.873419][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1298.873727][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1298.874059][ T11] kthread (kernel/kthread.c:388) 
[ 1298.874321][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1298.874673][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1298.874938][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1298.875278][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1299.070294][   T11] ------------[ cut here ]------------
| [ 1299.070729][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1299.071179][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1299.071718][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1299.073005][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1299.073680][   T11] Workqueue: netns cleanup_net
[ 1299.073948][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1299.074289][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1299.075328][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1299.075653][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1299.076162][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1299.076643][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1299.077160][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009ef2628
[ 1299.077687][   T11] R13: ffff888009ef2df8 R14: ffffc900000bfc98 R15: ffff888009ef2bc0
[ 1299.078220][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1299.078774][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1299.079185][   T11] CR2: 00007f11e7e43000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1299.079685][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1299.080184][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1299.080656][   T11] Call Trace:
[ 1299.080876][   T11]  <TASK>
[ 1299.081065][ T11] ? __warn (kernel/panic.c:677) 
[ 1299.081339][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1299.081669][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1299.082017][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1299.082313][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1299.082596][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1299.082916][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1299.083232][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1299.083523][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1299.083834][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1299.084099][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1299.084380][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1299.084630][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1299.084889][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1299.085173][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1299.085422][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1299.085694][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1299.086033][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1299.086384][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1299.086670][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1299.086949][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1299.087268][ T11] kthread (kernel/kthread.c:388) 
[ 1299.087522][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1299.087819][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1299.088102][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1299.088398][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1319.216223][   T11] ------------[ cut here ]------------
| [ 1319.216575][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1319.216999][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1319.217499][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1319.218643][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1319.219334][   T11] Workqueue: netns cleanup_net
[ 1319.219591][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.219903][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1319.220926][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1319.221257][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1319.221750][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1319.222247][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1319.222738][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800e4f2628
[ 1319.223201][   T11] R13: ffff88800e4f2df8 R14: ffffc900000bfc98 R15: ffff88800e4f2bc0
[ 1319.223694][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1319.224246][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1319.224644][   T11] CR2: 00007fd53734f7f0 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1319.225134][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1319.225603][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1319.226084][   T11] Call Trace:
[ 1319.226270][   T11]  <TASK>
[ 1319.226458][ T11] ? __warn (kernel/panic.c:677) 
[ 1319.226705][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1319.227012][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.227318][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1319.227602][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1319.227844][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1319.228130][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1319.228460][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1319.228712][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.229057][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1319.229341][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1319.229664][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1319.229940][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.230232][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1319.230527][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.230808][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1319.231088][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1319.231355][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1319.231639][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1319.231882][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1319.232142][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1319.232415][ T11] kthread (kernel/kthread.c:388) 
[ 1319.232635][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.232915][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1319.233212][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.233494][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1319.393211][   T11] ------------[ cut here ]------------
| [ 1319.393549][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1319.393923][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1319.394455][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1319.395536][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1319.396246][   T11] Workqueue: netns cleanup_net
[ 1319.396544][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.396874][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1319.397909][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1319.398255][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1319.398687][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1319.399139][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1319.399562][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800bd92628
[ 1319.399990][   T11] R13: ffff88800bd92df8 R14: ffffc900000bfc98 R15: ffff88800bd92bc0
[ 1319.400410][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1319.400880][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1319.401237][   T11] CR2: 00007f00fbd29000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1319.401663][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1319.402114][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1319.402647][   T11] Call Trace:
[ 1319.402860][   T11]  <TASK>
[ 1319.403098][ T11] ? __warn (kernel/panic.c:677) 
[ 1319.403397][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1319.403670][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.404031][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1319.404350][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1319.404693][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1319.405063][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1319.405426][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1319.405742][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.406124][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1319.406455][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1319.406830][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1319.407166][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.407498][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1319.407852][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.408200][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1319.408565][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1319.408905][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1319.409300][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1319.409611][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1319.409967][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1319.410274][ T11] kthread (kernel/kthread.c:388) 
[ 1319.410526][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.410793][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1319.411089][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.411385][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1319.597542][   T11] ------------[ cut here ]------------
| [ 1319.598012][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1319.598575][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1319.599242][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1319.600558][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1319.601409][   T11] Workqueue: netns cleanup_net
[ 1319.601830][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.602278][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1319.603578][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1319.603951][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1319.604457][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1319.604921][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1319.605397][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006e42628
[ 1319.605869][   T11] R13: ffff888006e42df8 R14: ffffc900000bfc98 R15: ffff888006e42bc0
[ 1319.606323][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1319.606850][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1319.607233][   T11] CR2: 00007f00fbd29000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1319.607709][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1319.608169][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1319.608612][   T11] Call Trace:
[ 1319.608790][   T11]  <TASK>
[ 1319.608948][ T11] ? __warn (kernel/panic.c:677) 
[ 1319.609182][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1319.609441][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.609720][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1319.609971][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1319.610206][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1319.610455][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1319.610763][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1319.611011][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.611312][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1319.611640][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1319.612075][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1319.612386][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.612746][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1319.613107][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.613472][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1319.613865][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1319.614285][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1319.614720][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1319.615102][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1319.615468][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1319.615893][ T11] kthread (kernel/kthread.c:388) 
[ 1319.616216][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.616575][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1319.616938][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.617302][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1319.782197][   T11] ------------[ cut here ]------------
| [ 1319.782511][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1319.782879][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1319.783375][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1319.784489][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1319.785162][   T11] Workqueue: netns cleanup_net
[ 1319.785422][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.785764][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1319.786897][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1319.787251][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1319.787665][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1319.788085][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1319.788501][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b4e2628
[ 1319.788912][   T11] R13: ffff88800b4e2df8 R14: ffffc900000bfc98 R15: ffff88800b4e2bc0
[ 1319.789333][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1319.789884][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1319.790282][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa002 CR4: 00000000001706f0
[ 1319.790731][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1319.791227][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1319.791698][   T11] Call Trace:
[ 1319.791883][   T11]  <TASK>
[ 1319.792054][ T11] ? __warn (kernel/panic.c:677) 
[ 1319.792301][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1319.792574][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.792871][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1319.793148][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1319.793391][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1319.793660][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1319.793976][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1319.794222][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1319.794553][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1319.794820][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1319.795153][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1319.795435][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.795697][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1319.796007][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1319.796286][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1319.796582][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1319.796883][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1319.797200][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1319.797478][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1319.797737][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1319.798014][ T11] kthread (kernel/kthread.c:388) 
[ 1319.798231][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.798473][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1319.798712][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1319.798984][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1339.812105][   T11] ------------[ cut here ]------------
| [ 1339.812424][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1339.812791][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1339.813309][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1339.814383][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1339.815172][   T11] Workqueue: netns cleanup_net
[ 1339.815432][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1339.815776][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1339.816949][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1339.817379][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1339.818097][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1339.818822][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1339.819583][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006b7a628
[ 1339.820321][   T11] R13: ffff888006b7adf8 R14: ffffc900000bfc98 R15: ffff888006b7abc0
[ 1339.821052][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1339.821879][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1339.822498][   T11] CR2: 00007f5c78cad000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1339.823256][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1339.823807][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1339.824239][   T11] Call Trace:
[ 1339.824497][   T11]  <TASK>
[ 1339.824726][ T11] ? __warn (kernel/panic.c:677) 
[ 1339.825067][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1339.825388][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1339.825784][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1339.826156][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1339.826390][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1339.826713][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1339.827112][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1339.827464][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1339.827871][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1339.828314][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1339.828778][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1339.829227][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1339.829656][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1339.830132][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1339.830556][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1339.831034][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1339.831519][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1339.832010][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1339.832457][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1339.832807][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1339.833170][ T11] kthread (kernel/kthread.c:388) 
[ 1339.833444][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1339.833720][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1339.834054][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1339.834354][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1340.032407][   T11] ------------[ cut here ]------------
| [ 1340.032844][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1340.033329][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1340.033941][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1340.035475][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1340.036372][   T11] Workqueue: netns cleanup_net
[ 1340.036770][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.037228][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1340.038574][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1340.039034][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1340.039607][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1340.040205][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1340.040774][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a93a628
[ 1340.041348][   T11] R13: ffff88800a93adf8 R14: ffffc900000bfc98 R15: ffff88800a93abc0
[ 1340.041885][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1340.042405][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1340.042809][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1340.043238][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1340.043652][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1340.044070][   T11] Call Trace:
[ 1340.044245][   T11]  <TASK>
[ 1340.044409][ T11] ? __warn (kernel/panic.c:677) 
[ 1340.044632][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1340.044888][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.045197][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1340.045475][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1340.045726][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1340.046010][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1340.046315][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1340.046573][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.046889][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1340.047188][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1340.047504][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1340.047765][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1340.048066][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1340.048380][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1340.048655][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1340.048951][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1340.049263][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1340.049605][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1340.049885][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1340.050173][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1340.050480][ T11] kthread (kernel/kthread.c:388) 
[ 1340.050732][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1340.051013][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1340.051291][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1340.051577][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1340.243284][   T11] ------------[ cut here ]------------
| [ 1340.243631][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1340.244052][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1340.244584][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1340.245612][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1340.246276][   T11] Workqueue: netns cleanup_net
[ 1340.246541][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.246854][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1340.247886][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1340.248225][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1340.248641][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1340.249167][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1340.249614][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007baa628
[ 1340.250171][   T11] R13: ffff888007baadf8 R14: ffffc900000bfc98 R15: ffff888007baabc0
[ 1340.250640][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1340.251158][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1340.251510][   T11] CR2: 00007f5b5f3dc000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1340.251967][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1340.252443][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1340.252908][   T11] Call Trace:
[ 1340.253125][   T11]  <TASK>
[ 1340.253284][ T11] ? __warn (kernel/panic.c:677) 
[ 1340.253553][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1340.253830][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.254147][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1340.254435][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1340.254702][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1340.254985][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1340.255313][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1340.255563][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.255888][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1340.256167][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1340.256473][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1340.256754][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1340.257017][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1340.257349][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1340.257633][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1340.257952][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1340.258251][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1340.258540][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1340.258796][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1340.259056][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1340.259346][ T11] kthread (kernel/kthread.c:388) 
[ 1340.259572][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1340.259820][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1340.260067][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1340.260326][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1340.466466][   T11] ------------[ cut here ]------------
| [ 1340.466788][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1340.467183][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1340.467769][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1340.468986][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1340.469665][   T11] Workqueue: netns cleanup_net
[ 1340.469954][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.470301][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1340.471404][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1340.471742][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1340.472198][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1340.472664][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1340.473107][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800af12628
[ 1340.473577][   T11] R13: ffff88800af12df8 R14: ffffc900000bfc98 R15: ffff88800af12bc0
[ 1340.474029][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1340.474589][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1340.474977][   T11] CR2: 00007f0082d82000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1340.475443][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1340.475889][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1340.476363][   T11] Call Trace:
[ 1340.476552][   T11]  <TASK>
[ 1340.476715][ T11] ? __warn (kernel/panic.c:677) 
[ 1340.476949][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1340.477216][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.477503][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1340.477752][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1340.477995][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1340.478257][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1340.478569][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1340.478829][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1340.479163][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1340.479433][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1340.479762][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1340.480041][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1340.480325][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1340.480634][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1340.480942][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1340.481237][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1340.481553][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1340.481871][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1340.482161][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1340.482449][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1340.482770][ T11] kthread (kernel/kthread.c:388) 
[ 1340.483020][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1340.483314][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1340.483565][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1340.483837][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1360.314531][   T11] ------------[ cut here ]------------
| [ 1360.314944][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1360.315398][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1360.315939][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1360.317085][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1360.317788][   T11] Workqueue: netns cleanup_net
[ 1360.318141][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.318556][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1360.319666][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1360.320067][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1360.320538][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1360.321072][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1360.321542][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009a12628
[ 1360.322012][   T11] R13: ffff888009a12df8 R14: ffffc900000bfc98 R15: ffff888009a12bc0
[ 1360.322445][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1360.322969][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1360.323329][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa001 CR4: 00000000001706f0
[ 1360.323777][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1360.324249][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1360.324761][   T11] Call Trace:
[ 1360.325042][   T11]  <TASK>
[ 1360.325254][ T11] ? __warn (kernel/panic.c:677) 
[ 1360.325510][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1360.325836][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.326194][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1360.326493][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1360.326767][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1360.327085][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1360.327419][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1360.327709][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.328037][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1360.328352][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1360.328698][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1360.329024][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.329351][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1360.329707][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.330054][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1360.330407][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1360.330731][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1360.331092][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1360.331400][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1360.331736][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1360.332060][ T11] kthread (kernel/kthread.c:388) 
[ 1360.332334][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.332636][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1360.332929][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.333234][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1360.512592][   T11] ------------[ cut here ]------------
| [ 1360.512924][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1360.513323][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1360.513830][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1360.514849][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1360.515566][   T11] Workqueue: netns cleanup_net
[ 1360.515848][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.516179][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1360.517255][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1360.517637][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1360.518075][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1360.518494][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1360.518912][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880099e2628
[ 1360.519336][   T11] R13: ffff8880099e2df8 R14: ffffc900000bfc98 R15: ffff8880099e2bc0
[ 1360.519788][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1360.520322][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1360.520706][   T11] CR2: 00007fd53734f7f0 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1360.521187][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1360.521637][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1360.522118][   T11] Call Trace:
[ 1360.522328][   T11]  <TASK>
[ 1360.522519][ T11] ? __warn (kernel/panic.c:677) 
[ 1360.522759][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1360.523035][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.523349][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1360.523608][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1360.523857][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1360.524136][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1360.524455][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1360.524713][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.525034][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1360.525297][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1360.525633][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1360.525928][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.526271][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1360.526658][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.526931][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1360.527324][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1360.527691][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1360.528113][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1360.528461][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1360.528794][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1360.529169][ T11] kthread (kernel/kthread.c:388) 
[ 1360.529455][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.529773][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1360.530097][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.530420][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1360.707323][   T11] ------------[ cut here ]------------
| [ 1360.707640][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1360.708026][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1360.708570][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1360.709776][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1360.710465][   T11] Workqueue: netns cleanup_net
[ 1360.710782][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.711103][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1360.712161][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1360.712531][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1360.712998][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1360.713490][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1360.713976][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006b7a628
[ 1360.714494][   T11] R13: ffff888006b7adf8 R14: ffffc900000bfc98 R15: ffff888006b7abc0
[ 1360.714997][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1360.715520][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1360.715937][   T11] CR2: 00007ffe4ebc8fe8 CR3: 00000000079aa001 CR4: 00000000001706f0
[ 1360.716447][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1360.716933][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1360.717413][   T11] Call Trace:
[ 1360.717643][   T11]  <TASK>
[ 1360.717830][ T11] ? __warn (kernel/panic.c:677) 
[ 1360.718120][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1360.718431][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.718762][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1360.719077][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1360.719378][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1360.719683][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1360.720005][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1360.720282][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.720605][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1360.720899][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1360.721225][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1360.721507][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.721805][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1360.722126][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.722419][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1360.722742][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1360.723069][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1360.723375][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1360.723633][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1360.723899][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1360.724207][ T11] kthread (kernel/kthread.c:388) 
[ 1360.724441][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.724704][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1360.724952][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.725221][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1360.924208][   T11] ------------[ cut here ]------------
| [ 1360.924520][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1360.924928][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1360.925580][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1360.927080][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1360.927851][   T11] Workqueue: netns cleanup_net
[ 1360.928123][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.928438][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1360.929614][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1360.930034][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1360.930534][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1360.931090][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1360.931585][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009752628
[ 1360.932095][   T11] R13: ffff888009752df8 R14: ffffc900000bfc98 R15: ffff888009752bc0
[ 1360.932611][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1360.933184][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1360.933595][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa002 CR4: 00000000001706f0
[ 1360.934074][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1360.934592][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1360.935109][   T11] Call Trace:
[ 1360.935304][   T11]  <TASK>
[ 1360.935476][ T11] ? __warn (kernel/panic.c:677) 
[ 1360.935734][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1360.936063][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.936377][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1360.936700][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1360.936971][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1360.937244][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1360.937568][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1360.937845][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1360.938170][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1360.938461][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1360.938780][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1360.939047][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.939297][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1360.939559][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1360.939811][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1360.940091][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1360.940353][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1360.940641][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1360.940913][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1360.941196][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1360.941493][ T11] kthread (kernel/kthread.c:388) 
[ 1360.941764][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.942030][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1360.942299][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1360.942607][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1380.322206][   T11] ------------[ cut here ]------------
| [ 1380.322538][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1380.322923][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1380.323424][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1380.324468][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1380.325196][   T11] Workqueue: netns cleanup_net
[ 1380.325485][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.325853][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1380.327051][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1380.327403][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1380.327867][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1380.328354][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1380.328804][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009e9a628
[ 1380.329321][   T11] R13: ffff888009e9adf8 R14: ffffc900000bfc98 R15: ffff888009e9abc0
[ 1380.329767][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1380.330277][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1380.330624][   T11] CR2: 00007ff743af2000 CR3: 00000000079c6006 CR4: 00000000001706f0
[ 1380.331095][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1380.331568][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1380.332017][   T11] Call Trace:
[ 1380.332229][   T11]  <TASK>
[ 1380.332427][ T11] ? __warn (kernel/panic.c:677) 
[ 1380.332681][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1380.332993][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.333323][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1380.333601][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1380.333862][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1380.334158][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1380.334439][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1380.334679][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.334959][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1380.335212][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1380.335497][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1380.335740][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.336012][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1380.336274][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.336519][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1380.336828][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1380.337107][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1380.337446][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1380.337711][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1380.338008][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1380.338332][ T11] kthread (kernel/kthread.c:388) 
[ 1380.338563][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.338844][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1380.339143][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.339406][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1380.533621][   T11] ------------[ cut here ]------------
| [ 1380.533948][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1380.534343][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1380.534826][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1380.536508][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1380.537207][   T11] Workqueue: netns cleanup_net
[ 1380.537468][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.537782][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1380.538882][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1380.539294][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1380.539758][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1380.540276][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1380.540745][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800960a628
[ 1380.541205][   T11] R13: ffff88800960adf8 R14: ffffc900000bfc98 R15: ffff88800960abc0
[ 1380.541657][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1380.542193][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1380.542554][   T11] CR2: 00007f7a660d5270 CR3: 000000000ca8e002 CR4: 00000000001706f0
[ 1380.543036][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1380.543483][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1380.543952][   T11] Call Trace:
[ 1380.544184][   T11]  <TASK>
[ 1380.544369][ T11] ? __warn (kernel/panic.c:677) 
[ 1380.544624][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1380.544889][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.545231][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1380.545503][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1380.545752][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1380.546072][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1380.546367][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1380.546644][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.546956][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1380.547249][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1380.547532][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1380.547771][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.548035][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1380.548299][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.548550][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1380.548828][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1380.549167][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1380.549482][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1380.549780][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1380.550078][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1380.550381][ T11] kthread (kernel/kthread.c:388) 
[ 1380.550635][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.550922][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1380.551204][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.551477][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1380.713091][   T11] ------------[ cut here ]------------
| [ 1380.713409][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1380.713789][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1380.714415][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1380.715584][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1380.716310][   T11] Workqueue: netns cleanup_net
[ 1380.716585][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.716988][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1380.718041][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1380.718362][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1380.718789][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1380.719208][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1380.719623][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880098ea628
[ 1380.720046][   T11] R13: ffff8880098eadf8 R14: ffffc900000bfc98 R15: ffff8880098eabc0
[ 1380.720464][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1380.720933][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1380.721300][   T11] CR2: 00007fd038dfc000 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1380.721793][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1380.722262][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1380.722732][   T11] Call Trace:
[ 1380.722942][   T11]  <TASK>
[ 1380.723107][ T11] ? __warn (kernel/panic.c:677) 
[ 1380.723354][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1380.723626][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.723921][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1380.724225][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1380.724474][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1380.724727][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1380.725003][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1380.725266][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.725575][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1380.725848][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1380.726145][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1380.726417][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.726704][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1380.727013][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.727284][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1380.727588][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1380.727898][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1380.728215][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1380.728472][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1380.728724][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1380.729032][ T11] kthread (kernel/kthread.c:388) 
[ 1380.729285][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.729551][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1380.729815][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.730106][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1380.953574][   T11] ------------[ cut here ]------------
| [ 1380.954009][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1380.954404][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1380.954905][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1380.956181][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1380.957005][   T11] Workqueue: netns cleanup_net
[ 1380.957326][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.957750][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1380.958975][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1380.959301][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1380.959797][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1380.960354][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1380.960838][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006c5a628
[ 1380.961326][   T11] R13: ffff888006c5adf8 R14: ffffc900000bfc98 R15: ffff888006c5abc0
[ 1380.961865][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1380.962417][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1380.962893][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1380.963364][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1380.963882][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1380.964446][   T11] Call Trace:
[ 1380.964672][   T11]  <TASK>
[ 1380.964879][ T11] ? __warn (kernel/panic.c:677) 
[ 1380.965225][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1380.965545][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.965901][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1380.966192][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1380.966567][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1380.966882][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1380.967196][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1380.967457][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1380.967868][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1380.968176][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1380.968499][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1380.968760][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.969135][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1380.969447][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1380.969740][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1380.970118][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1380.970523][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1380.970867][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1380.971162][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1380.971415][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1380.971759][ T11] kthread (kernel/kthread.c:388) 
[ 1380.971997][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.972240][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1380.972479][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1380.972724][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1400.779602][   T11] ------------[ cut here ]------------
| [ 1400.780003][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1400.780458][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1400.780967][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1400.782024][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1400.782673][   T11] Workqueue: netns cleanup_net
[ 1400.782934][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1400.783254][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1400.784397][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1400.784783][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1400.785272][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1400.785756][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1400.786231][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888002742628
[ 1400.786710][   T11] R13: ffff888002742df8 R14: ffffc900000bfc98 R15: ffff888002742bc0
[ 1400.787204][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1400.787734][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1400.788143][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1400.788621][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1400.789124][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1400.789588][   T11] Call Trace:
[ 1400.789799][   T11]  <TASK>
[ 1400.790018][ T11] ? __warn (kernel/panic.c:677) 
[ 1400.790309][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1400.790629][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1400.790970][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1400.791280][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1400.791578][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1400.791910][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1400.792243][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1400.792552][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1400.792890][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1400.793199][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1400.793522][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1400.793805][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1400.794150][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1400.794473][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1400.794741][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1400.795070][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1400.795378][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1400.795698][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1400.795982][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1400.796283][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1400.796595][ T11] kthread (kernel/kthread.c:388) 
[ 1400.796844][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1400.797119][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1400.797398][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1400.797660][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1400.990185][   T11] ------------[ cut here ]------------
| [ 1400.990564][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1400.991229][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1400.991743][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1400.992860][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1400.993569][   T11] Workqueue: netns cleanup_net
[ 1400.993837][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1400.994177][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1400.995313][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1400.995669][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1400.996146][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1400.996598][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1400.997097][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008282628
[ 1400.997534][   T11] R13: ffff888008282df8 R14: ffffc900000bfc98 R15: ffff888008282bc0
[ 1400.998034][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1400.998539][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1400.998904][   T11] CR2: 00007f2b30654270 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1400.999347][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1400.999774][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1401.000215][   T11] Call Trace:
[ 1401.000399][   T11]  <TASK>
[ 1401.000561][ T11] ? __warn (kernel/panic.c:677) 
[ 1401.000785][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1401.001068][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.001358][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1401.001610][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1401.001850][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1401.002150][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1401.002453][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1401.002773][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.003093][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1401.003409][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1401.003716][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1401.004010][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1401.004294][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1401.004594][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1401.004869][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1401.005218][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1401.005498][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1401.005845][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1401.006134][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1401.006428][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1401.006737][ T11] kthread (kernel/kthread.c:388) 
[ 1401.006999][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1401.007275][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1401.007551][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1401.007829][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1401.209948][   T11] ------------[ cut here ]------------
| [ 1401.210491][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1401.211111][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1401.211839][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1401.213377][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1401.214276][   T11] Workqueue: netns cleanup_net
[ 1401.214541][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.214888][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1401.216040][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1401.216469][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1401.216944][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1401.217423][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1401.217885][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a00a628
[ 1401.218364][   T11] R13: ffff88800a00adf8 R14: ffffc900000bfc98 R15: ffff88800a00abc0
[ 1401.218811][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1401.219366][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1401.219750][   T11] CR2: 00007f76e1a6d2a8 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1401.220244][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1401.220752][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1401.221209][   T11] Call Trace:
[ 1401.221402][   T11]  <TASK>
[ 1401.221579][ T11] ? __warn (kernel/panic.c:677) 
[ 1401.221853][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1401.222131][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.222413][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1401.222662][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1401.222900][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1401.223158][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1401.223433][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1401.223678][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.223973][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1401.224227][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1401.224551][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1401.224808][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1401.225086][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1401.225353][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1401.225602][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1401.225880][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1401.226153][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1401.226441][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1401.226689][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1401.226947][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1401.227226][ T11] kthread (kernel/kthread.c:388) 
[ 1401.227447][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1401.227697][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1401.227935][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1401.228194][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1401.410171][   T11] ------------[ cut here ]------------
| [ 1401.410484][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1401.410861][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1401.411369][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1401.412516][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1401.413217][   T11] Workqueue: netns cleanup_net
[ 1401.413483][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.413820][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1401.415014][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1401.415369][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1401.415849][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1401.416324][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1401.416817][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c642628
[ 1401.417327][   T11] R13: ffff88800c642df8 R14: ffffc900000bfc98 R15: ffff88800c642bc0
[ 1401.417788][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1401.418360][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1401.418749][   T11] CR2: 00007fe59a82b000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1401.419237][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1401.419734][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1401.420187][   T11] Call Trace:
[ 1401.420389][   T11]  <TASK>
[ 1401.420580][ T11] ? __warn (kernel/panic.c:677) 
[ 1401.420799][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1401.421064][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.421351][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1401.421597][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1401.421828][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1401.422081][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1401.422352][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1401.422631][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1401.422967][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1401.423284][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1401.423582][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1401.423858][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1401.424154][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1401.424457][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1401.424744][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1401.425053][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1401.425374][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1401.425688][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1401.425967][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1401.426251][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1401.426549][ T11] kthread (kernel/kthread.c:388) 
[ 1401.426796][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1401.427101][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1401.427353][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1401.427652][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1421.137093][   T11] ------------[ cut here ]------------
| [ 1421.137426][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1421.137829][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1421.138381][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1421.139491][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1421.140211][   T11] Workqueue: netns cleanup_net
[ 1421.140520][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.140901][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1421.142094][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1421.142478][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1421.142984][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1421.143451][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1421.143929][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009ab2628
[ 1421.144395][   T11] R13: ffff888009ab2df8 R14: ffffc900000bfc98 R15: ffff888009ab2bc0
[ 1421.144852][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1421.145373][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1421.145761][   T11] CR2: 00007f97c417d270 CR3: 00000000079c6003 CR4: 00000000001706f0
[ 1421.146229][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1421.146688][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1421.147112][   T11] Call Trace:
[ 1421.147293][   T11]  <TASK>
[ 1421.147456][ T11] ? __warn (kernel/panic.c:677) 
[ 1421.147682][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1421.147940][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.148230][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1421.148478][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1421.148715][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1421.148974][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1421.149282][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1421.149554][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.149864][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1421.150155][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1421.150466][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1421.150732][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.151015][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1421.151301][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.151581][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1421.151913][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1421.152197][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1421.152514][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1421.152776][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1421.153073][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1421.153348][ T11] kthread (kernel/kthread.c:388) 
[ 1421.153567][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.153815][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1421.154070][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.154316][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1421.302020][   T11] ------------[ cut here ]------------
| [ 1421.302365][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1421.302766][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1421.303244][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1421.304236][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1421.304866][   T11] Workqueue: netns cleanup_net
[ 1421.305136][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.305468][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1421.306557][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1421.306911][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1421.307378][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1421.307833][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1421.308278][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a86a628
[ 1421.308757][   T11] R13: ffff88800a86adf8 R14: ffffc900000bfc98 R15: ffff88800a86abc0
[ 1421.309207][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1421.309702][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1421.310050][   T11] CR2: 00007f6f81390000 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1421.310460][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1421.310872][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1421.311289][   T11] Call Trace:
[ 1421.311467][   T11]  <TASK>
[ 1421.311626][ T11] ? __warn (kernel/panic.c:677) 
[ 1421.311846][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1421.312107][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.312376][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1421.312636][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1421.312877][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1421.313148][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1421.313459][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1421.313722][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.314034][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1421.314307][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1421.314627][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1421.314880][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.315157][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1421.315454][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.315703][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1421.316026][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1421.316316][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1421.316631][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1421.316895][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1421.317162][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1421.317455][ T11] kthread (kernel/kthread.c:388) 
[ 1421.317695][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.317951][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1421.318217][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.318475][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1421.473038][   T11] ------------[ cut here ]------------
| [ 1421.473341][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1421.473706][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1421.474201][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1421.475223][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1421.475936][   T11] Workqueue: netns cleanup_net
[ 1421.476224][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.476529][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1421.477618][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1421.477979][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1421.478394][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1421.478810][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1421.479222][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888005a7a628
[ 1421.479628][   T11] R13: ffff888005a7adf8 R14: ffffc900000bfc98 R15: ffff888005a7abc0
[ 1421.480041][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1421.480496][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1421.480897][   T11] CR2: 00007fd9583b0270 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1421.481337][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1421.481822][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1421.482266][   T11] Call Trace:
[ 1421.482473][   T11]  <TASK>
[ 1421.482649][ T11] ? __warn (kernel/panic.c:677) 
[ 1421.482900][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1421.483205][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.483520][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1421.483777][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1421.484084][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1421.484335][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1421.484659][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1421.484908][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.485221][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1421.485498][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1421.485790][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1421.486062][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.486324][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1421.486615][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.486895][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1421.487190][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1421.487502][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1421.487811][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1421.488087][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1421.488373][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1421.488654][ T11] kthread (kernel/kthread.c:388) 
[ 1421.488874][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.489118][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1421.489353][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.489590][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1421.647691][   T11] ------------[ cut here ]------------
| [ 1421.648053][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1421.648514][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1421.649115][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1421.650356][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1421.651091][   T11] Workqueue: netns cleanup_net
[ 1421.651382][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.651727][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1421.652985][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1421.653343][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1421.653824][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1421.654291][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1421.654704][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800991a628
[ 1421.655152][   T11] R13: ffff88800991adf8 R14: ffffc900000bfc98 R15: ffff88800991abc0
[ 1421.655569][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1421.656082][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1421.656520][   T11] CR2: 00007f4720178000 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1421.657024][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1421.657566][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1421.658105][   T11] Call Trace:
[ 1421.658316][   T11]  <TASK>
[ 1421.658507][ T11] ? __warn (kernel/panic.c:677) 
[ 1421.658778][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1421.659099][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.659446][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1421.659744][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1421.660043][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1421.660362][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1421.660709][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1421.661032][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1421.661385][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1421.661690][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1421.662072][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1421.662382][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.662693][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1421.663055][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1421.663335][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1421.663693][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1421.664015][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1421.664348][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1421.664613][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1421.664892][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1421.665194][ T11] kthread (kernel/kthread.c:388) 
[ 1421.665429][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.665677][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1421.665919][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1421.666204][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1441.361347][   T11] ------------[ cut here ]------------
| [ 1441.361819][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1441.362413][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1441.363205][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1441.364752][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1441.365704][   T11] Workqueue: netns cleanup_net
[ 1441.366134][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.366618][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1441.368235][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1441.368661][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1441.369266][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1441.369859][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1441.370529][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800aa9a628
[ 1441.371200][   T11] R13: ffff88800aa9adf8 R14: ffffc900000bfc98 R15: ffff88800aa9abc0
[ 1441.371878][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1441.372661][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1441.373254][   T11] CR2: 00007fd537350a30 CR3: 00000000079c6005 CR4: 00000000001706f0
[ 1441.373982][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1441.374673][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1441.375376][   T11] Call Trace:
[ 1441.375660][   T11]  <TASK>
[ 1441.375930][ T11] ? __warn (kernel/panic.c:677) 
[ 1441.376312][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1441.376727][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.377208][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1441.377603][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1441.377998][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1441.378404][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1441.378843][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1441.379207][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.379616][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1441.379996][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1441.380402][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1441.380774][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.381168][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1441.381586][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.381976][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1441.382385][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1441.382775][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1441.383204][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1441.383559][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1441.383934][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1441.384336][ T11] kthread (kernel/kthread.c:388) 
[ 1441.384691][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.385085][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1441.385439][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.385803][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1441.557284][   T11] ------------[ cut here ]------------
| [ 1441.557651][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1441.558084][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1441.558612][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1441.559723][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1441.560437][   T11] Workqueue: netns cleanup_net
[ 1441.560704][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.561058][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1441.562173][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1441.562499][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1441.562922][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1441.563343][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1441.563774][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009762628
[ 1441.564257][   T11] R13: ffff888009762df8 R14: ffffc900000bfc98 R15: ffff888009762bc0
[ 1441.564752][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1441.565302][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1441.565728][   T11] CR2: 0000559e2a91e598 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1441.566209][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1441.566718][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1441.567206][   T11] Call Trace:
[ 1441.567406][   T11]  <TASK>
[ 1441.567578][ T11] ? __warn (kernel/panic.c:677) 
[ 1441.567824][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1441.568173][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.568508][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1441.568788][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1441.569058][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1441.569368][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1441.569664][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1441.569944][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.570269][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1441.570549][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1441.570898][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1441.571169][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.571442][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1441.571745][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.572049][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1441.572344][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1441.572610][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1441.572899][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1441.573158][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1441.573413][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1441.573684][ T11] kthread (kernel/kthread.c:388) 
[ 1441.573921][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.574175][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1441.574424][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.574675][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1441.743134][   T11] ------------[ cut here ]------------
| [ 1441.743535][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1441.743945][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1441.744519][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1441.745630][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1441.746337][   T11] Workqueue: netns cleanup_net
[ 1441.746594][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.746937][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1441.748075][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1441.748422][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1441.748909][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1441.749385][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1441.749851][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009e7a628
[ 1441.750303][   T11] R13: ffff888009e7adf8 R14: ffffc900000bfc98 R15: ffff888009e7abc0
[ 1441.750814][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1441.751363][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1441.751748][   T11] CR2: 0000559e2a91e598 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1441.752233][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1441.752726][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1441.753203][   T11] Call Trace:
[ 1441.753406][   T11]  <TASK>
[ 1441.753575][ T11] ? __warn (kernel/panic.c:677) 
[ 1441.753824][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1441.754112][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.754446][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1441.754745][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1441.755018][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1441.755283][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1441.755549][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1441.755785][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.756071][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1441.756320][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1441.756598][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1441.756839][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.757100][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1441.757372][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.757653][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1441.757967][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1441.758276][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1441.758595][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1441.758883][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1441.759162][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1441.759484][ T11] kthread (kernel/kthread.c:388) 
[ 1441.759737][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.760046][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1441.760312][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.760597][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1441.935171][   T11] ------------[ cut here ]------------
| [ 1441.935495][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1441.935889][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1441.936409][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1441.937479][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1441.938258][   T11] Workqueue: netns cleanup_net
[ 1441.938555][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.938909][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1441.940117][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1441.940496][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1441.940990][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1441.941458][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1441.941911][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800cc9a628
[ 1441.942401][   T11] R13: ffff88800cc9adf8 R14: ffffc900000bfc98 R15: ffff88800cc9abc0
[ 1441.942877][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1441.943450][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1441.943859][   T11] CR2: 00007f2cc4739270 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1441.944363][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1441.944857][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1441.945385][   T11] Call Trace:
[ 1441.945605][   T11]  <TASK>
[ 1441.945805][ T11] ? __warn (kernel/panic.c:677) 
[ 1441.946062][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1441.946339][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.946638][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1441.946896][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1441.947148][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1441.947420][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1441.947707][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1441.947977][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1441.948285][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1441.948577][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1441.948912][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1441.949208][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.949521][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1441.949817][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1441.950108][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1441.950408][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1441.950698][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1441.951025][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1441.951294][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1441.951577][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1441.951879][ T11] kthread (kernel/kthread.c:388) 
[ 1441.952121][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.952398][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1441.952661][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1441.952934][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1461.213839][   T11] ------------[ cut here ]------------
| [ 1461.214170][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1461.214572][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1461.215159][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1461.216272][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1461.216949][   T11] Workqueue: netns cleanup_net
[ 1461.217234][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.217575][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1461.218757][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1461.219180][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1461.219608][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1461.220050][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1461.220465][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a392628
[ 1461.220879][   T11] R13: ffff88800a392df8 R14: ffffc900000bfc98 R15: ffff88800a392bc0
[ 1461.221303][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1461.221768][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1461.222182][   T11] CR2: 00007fd537350a30 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1461.222660][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1461.223143][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1461.223562][   T11] Call Trace:
[ 1461.223760][   T11]  <TASK>
[ 1461.223945][ T11] ? __warn (kernel/panic.c:677) 
[ 1461.224203][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1461.224486][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.224773][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1461.225079][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1461.225335][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1461.225593][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1461.225891][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1461.226177][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.226494][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1461.226785][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1461.227133][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1461.227408][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.227691][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1461.228007][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.228283][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1461.228590][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1461.228905][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1461.229227][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1461.229476][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1461.229728][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1461.230004][ T11] kthread (kernel/kthread.c:388) 
[ 1461.230226][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.230472][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1461.230711][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.230953][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1461.431537][   T11] ------------[ cut here ]------------
| [ 1461.431921][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1461.432414][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1461.432928][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1461.433997][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1461.434674][   T11] Workqueue: netns cleanup_net
[ 1461.434931][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.435363][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1461.436556][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1461.436939][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1461.437423][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1461.437914][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1461.438387][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b0fa628
[ 1461.438900][   T11] R13: ffff88800b0fadf8 R14: ffffc900000bfc98 R15: ffff88800b0fabc0
[ 1461.439415][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1461.439973][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1461.440396][   T11] CR2: 00007ffe4ebc8fb8 CR3: 00000000079aa005 CR4: 00000000001706f0
[ 1461.440865][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1461.441365][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1461.441858][   T11] Call Trace:
[ 1461.442069][   T11]  <TASK>
[ 1461.442243][ T11] ? __warn (kernel/panic.c:677) 
[ 1461.442501][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1461.442797][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.443131][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1461.443428][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1461.443706][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1461.443967][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1461.444239][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1461.444477][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.444751][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1461.445012][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1461.445294][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1461.445538][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.445818][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1461.446133][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.446448][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1461.446780][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1461.447115][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1461.447455][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1461.447768][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1461.448101][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1461.448457][ T11] kthread (kernel/kthread.c:388) 
[ 1461.448736][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.449055][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1461.449341][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.449653][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1461.621439][   T11] ------------[ cut here ]------------
| [ 1461.621794][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1461.622282][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1461.622849][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1461.623981][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1461.624733][   T11] Workqueue: netns cleanup_net
[ 1461.625048][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.625507][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1461.626656][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1461.627075][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1461.627559][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1461.628083][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1461.628622][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a372628
[ 1461.629138][   T11] R13: ffff88800a372df8 R14: ffffc900000bfc98 R15: ffff88800a372bc0
[ 1461.629661][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1461.630275][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1461.630695][   T11] CR2: 00007fe885daf2a8 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1461.631265][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1461.631773][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1461.632291][   T11] Call Trace:
[ 1461.632528][   T11]  <TASK>
[ 1461.632748][ T11] ? __warn (kernel/panic.c:677) 
[ 1461.633016][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1461.633330][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.633669][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1461.633972][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1461.634224][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1461.634493][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1461.634783][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1461.635034][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.635331][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1461.635592][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1461.635901][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1461.636193][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.636455][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1461.636798][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.637135][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1461.637481][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1461.637846][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1461.638237][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1461.638565][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1461.638893][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1461.639198][ T11] kthread (kernel/kthread.c:388) 
[ 1461.639507][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.639794][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1461.640060][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.640378][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1461.837391][   T11] ------------[ cut here ]------------
| [ 1461.837782][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1461.838284][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1461.838804][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1461.839888][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1461.840742][   T11] Workqueue: netns cleanup_net
[ 1461.841069][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.841425][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1461.842788][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1461.843196][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1461.843746][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1461.844270][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1461.844737][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800aa4a628
[ 1461.845283][   T11] R13: ffff88800aa4adf8 R14: ffffc900000bfc98 R15: ffff88800aa4abc0
[ 1461.845788][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1461.846330][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1461.846842][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa005 CR4: 00000000001706f0
[ 1461.847357][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1461.847869][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1461.848381][   T11] Call Trace:
[ 1461.848563][   T11]  <TASK>
[ 1461.848746][ T11] ? __warn (kernel/panic.c:677) 
[ 1461.848995][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1461.849325][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.849637][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1461.849881][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1461.850123][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1461.850371][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1461.850639][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1461.850876][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1461.851159][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1461.851412][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1461.851712][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1461.852020][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.852304][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1461.852615][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1461.852898][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1461.853216][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1461.853519][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1461.853895][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1461.854161][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1461.854489][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1461.854787][ T11] kthread (kernel/kthread.c:388) 
[ 1461.855078][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.855374][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1461.855685][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1461.855998][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1488.700269][   T11] ------------[ cut here ]------------
| [ 1488.700624][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1488.701047][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1488.701627][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1488.702689][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1488.703333][   T11] Workqueue: netns cleanup_net
[ 1488.703611][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1488.703934][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1488.705138][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1488.705507][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1488.705994][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1488.706452][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1488.706932][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880060b2628
[ 1488.707405][   T11] R13: ffff8880060b2df8 R14: ffffc900000bfc98 R15: ffff8880060b2bc0
[ 1488.707823][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1488.708306][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1488.708652][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1488.709144][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1488.709586][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1488.710061][   T11] Call Trace:
[ 1488.710282][   T11]  <TASK>
[ 1488.710489][ T11] ? __warn (kernel/panic.c:677) 
[ 1488.710746][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1488.711059][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1488.711382][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1488.711656][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1488.711930][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1488.712265][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1488.712607][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1488.712908][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1488.713273][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1488.713608][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1488.713939][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1488.714236][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1488.714548][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1488.714875][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1488.715198][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1488.715561][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1488.715892][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1488.716246][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1488.716549][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1488.716878][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1488.717207][ T11] kthread (kernel/kthread.c:388) 
[ 1488.717468][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1488.717742][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1488.718070][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1488.718363][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1488.886007][   T11] ------------[ cut here ]------------
| [ 1488.886333][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1488.886712][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1488.887334][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1488.888362][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1488.889021][   T11] Workqueue: netns cleanup_net
[ 1488.889280][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1488.889591][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1488.890611][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1488.890931][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1488.891408][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1488.891865][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1488.892346][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006342628
[ 1488.892807][   T11] R13: ffff888006342df8 R14: ffffc900000bfc98 R15: ffff888006342bc0
[ 1488.893267][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1488.893792][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1488.894189][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa006 CR4: 00000000001706f0
[ 1488.894653][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1488.895121][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1488.895563][   T11] Call Trace:
[ 1488.895740][   T11]  <TASK>
[ 1488.895951][ T11] ? __warn (kernel/panic.c:677) 
[ 1488.896185][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1488.896481][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1488.896795][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1488.897087][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1488.897323][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1488.897608][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1488.897934][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1488.898223][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1488.898528][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1488.898815][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1488.899152][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1488.899424][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1488.899694][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1488.900013][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1488.900307][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1488.900612][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1488.900909][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1488.901242][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1488.901546][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1488.901837][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1488.902145][ T11] kthread (kernel/kthread.c:388) 
[ 1488.902406][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1488.902689][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1488.902974][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1488.903247][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1489.103365][   T11] ------------[ cut here ]------------
| [ 1489.103780][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1489.104196][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1489.104715][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1489.105819][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1489.106643][   T11] Workqueue: netns cleanup_net
[ 1489.106919][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1489.107283][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1489.108354][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1489.108716][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1489.109171][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1489.109631][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1489.110102][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800860a628
[ 1489.110559][   T11] R13: ffff88800860adf8 R14: ffffc900000bfc98 R15: ffff88800860abc0
[ 1489.111004][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1489.111513][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1489.111905][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[ 1489.112368][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1489.112807][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1489.113286][   T11] Call Trace:
[ 1489.113535][   T11]  <TASK>
[ 1489.113709][ T11] ? __warn (kernel/panic.c:677) 
[ 1489.113981][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1489.114282][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1489.114619][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1489.114910][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1489.115173][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1489.115473][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1489.115796][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1489.116083][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1489.116396][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1489.116642][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1489.116924][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1489.117168][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1489.117420][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1489.117687][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1489.117934][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1489.118214][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1489.118482][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1489.118767][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1489.119017][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1489.119337][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1489.119671][ T11] kthread (kernel/kthread.c:388) 
[ 1489.119935][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1489.120215][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1489.120495][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1489.120793][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1489.292973][   T11] ------------[ cut here ]------------
| [ 1489.293489][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1489.294093][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1489.294887][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1489.296520][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1489.297498][   T11] Workqueue: netns cleanup_net
[ 1489.297888][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1489.298369][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1489.300054][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1489.300568][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1489.301276][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1489.301910][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1489.302543][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b012628
[ 1489.303175][   T11] R13: ffff88800b012df8 R14: ffffc900000bfc98 R15: ffff88800b012bc0
[ 1489.303803][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1489.304602][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1489.305155][   T11] CR2: 00007f31752ea270 CR3: 0000000024134003 CR4: 00000000001706f0
[ 1489.305854][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1489.306537][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1489.307232][   T11] Call Trace:
[ 1489.307529][   T11]  <TASK>
[ 1489.307785][ T11] ? __warn (kernel/panic.c:677) 
[ 1489.308145][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1489.308578][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1489.309031][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1489.309438][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1489.309823][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1489.310241][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1489.310686][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1489.311057][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1489.311475][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1489.311855][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1489.312291][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1489.312695][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1489.313103][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1489.313553][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1489.313988][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1489.314419][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1489.314870][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1489.315332][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1489.315749][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1489.316176][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1489.316602][ T11] kthread (kernel/kthread.c:388) 
[ 1489.316973][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1489.317353][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1489.317751][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1489.318155][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1515.785326][   T11] ------------[ cut here ]------------
| [ 1515.785644][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1515.786051][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1515.786539][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1515.787698][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1515.788393][   T11] Workqueue: netns cleanup_net
[ 1515.788735][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1515.789055][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1515.790151][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1515.790517][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1515.790983][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1515.791449][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1515.791926][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009f02628
[ 1515.792387][   T11] R13: ffff888009f02df8 R14: ffffc900000bfc98 R15: ffff888009f02bc0
[ 1515.792829][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1515.793395][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1515.793868][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa001 CR4: 00000000001706f0
[ 1515.794351][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1515.794806][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1515.795224][   T11] Call Trace:
[ 1515.795400][   T11]  <TASK>
[ 1515.795554][ T11] ? __warn (kernel/panic.c:677) 
[ 1515.795772][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1515.796033][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1515.796306][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1515.796545][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1515.796771][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1515.797027][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1515.797292][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1515.797617][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1515.797971][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1515.798256][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1515.798565][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1515.798850][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1515.799108][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1515.799367][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1515.799654][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1515.799975][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1515.800271][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1515.800584][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1515.800874][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1515.801183][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1515.801487][ T11] kthread (kernel/kthread.c:388) 
[ 1515.801723][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1515.802015][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1515.802298][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1515.802575][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1515.974003][   T11] ------------[ cut here ]------------
| [ 1515.974475][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1515.975099][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1515.975859][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1515.977364][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1515.978371][   T11] Workqueue: netns cleanup_net
[ 1515.978788][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1515.979304][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1515.980901][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1515.981229][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1515.981648][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1515.982084][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1515.982502][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800969a628
[ 1515.982928][   T11] R13: ffff88800969adf8 R14: ffffc900000bfc98 R15: ffff88800969abc0
[ 1515.983450][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1515.983999][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1515.984347][   T11] CR2: 00007f15a7de9000 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1515.984826][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1515.985275][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1515.985774][   T11] Call Trace:
[ 1515.985955][   T11]  <TASK>
[ 1515.986137][ T11] ? __warn (kernel/panic.c:677) 
[ 1515.986389][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1515.986677][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1515.987128][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1515.987401][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1515.987643][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1515.987937][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1515.988228][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1515.988496][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1515.988805][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1515.989088][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1515.989388][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1515.989670][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1515.989932][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1515.990207][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1515.990458][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1515.990741][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1515.991014][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1515.991301][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1515.991550][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1515.991815][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1515.992140][ T11] kthread (kernel/kthread.c:388) 
[ 1515.992378][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1515.992644][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1515.992923][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1515.993192][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1516.170128][   T11] ------------[ cut here ]------------
| [ 1516.170452][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1516.170846][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1516.171370][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1516.172524][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1516.173178][   T11] Workqueue: netns cleanup_net
[ 1516.173447][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1516.173757][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1516.174775][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1516.175101][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1516.175516][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1516.175932][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1516.176353][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008312628
[ 1516.176765][   T11] R13: ffff888008312df8 R14: ffffc900000bfc98 R15: ffff888008312bc0
[ 1516.177189][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1516.177653][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1516.178030][   T11] CR2: 00007ff408cf8000 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1516.178447][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1516.178895][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1516.179347][   T11] Call Trace:
[ 1516.179547][   T11]  <TASK>
[ 1516.179723][ T11] ? __warn (kernel/panic.c:677) 
[ 1516.179952][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1516.180247][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1516.180548][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1516.180809][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1516.181062][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1516.181310][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1516.181610][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1516.181876][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1516.182182][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1516.182437][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1516.182762][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1516.183039][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1516.183317][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1516.183622][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1516.183938][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1516.184252][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1516.184556][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1516.184894][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1516.185159][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1516.185455][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1516.185745][ T11] kthread (kernel/kthread.c:388) 
[ 1516.186002][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1516.186276][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1516.186547][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1516.186818][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1516.363203][   T11] ------------[ cut here ]------------
| [ 1516.363539][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1516.363914][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1516.364406][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1516.365539][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1516.366214][   T11] Workqueue: netns cleanup_net
[ 1516.366473][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1516.366811][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1516.367884][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1516.368244][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1516.368722][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1516.369170][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1516.369652][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800988a628
[ 1516.370118][   T11] R13: ffff88800988adf8 R14: ffffc900000bfc98 R15: ffff88800988abc0
[ 1516.370582][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1516.371133][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1516.371478][   T11] CR2: 00007f1028788000 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1516.371903][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1516.372330][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1516.372761][   T11] Call Trace:
[ 1516.372939][   T11]  <TASK>
[ 1516.373125][ T11] ? __warn (kernel/panic.c:677) 
[ 1516.373384][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1516.373722][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1516.374017][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1516.374330][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1516.374592][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1516.374888][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1516.375204][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1516.375485][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1516.375793][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1516.376112][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1516.376418][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1516.376709][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1516.377001][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1516.377302][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1516.377603][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1516.377894][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1516.378207][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1516.378523][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1516.378799][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1516.379101][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1516.379404][ T11] kthread (kernel/kthread.c:388) 
[ 1516.379654][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1516.379920][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1516.380188][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1516.380477][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1536.514341][   T11] ------------[ cut here ]------------
| [ 1536.514694][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1536.515144][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1536.515657][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1536.516751][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1536.517562][   T11] Workqueue: netns cleanup_net
[ 1536.517824][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.518158][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1536.519207][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1536.519530][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1536.520000][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1536.520444][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1536.520900][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025b82628
[ 1536.521379][   T11] R13: ffff888025b82df8 R14: ffffc900000bfc98 R15: ffff888025b82bc0
[ 1536.521837][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1536.522348][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1536.522758][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa004 CR4: 00000000001706f0
[ 1536.523276][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1536.523751][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1536.524225][   T11] Call Trace:
[ 1536.524427][   T11]  <TASK>
[ 1536.524588][ T11] ? __warn (kernel/panic.c:677) 
[ 1536.524808][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1536.525092][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.525403][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1536.525706][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1536.525984][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1536.526264][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1536.526576][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1536.526919][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.527206][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1536.527494][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1536.527815][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1536.528110][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1536.528405][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1536.528728][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1536.529028][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1536.529325][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1536.529630][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1536.529981][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1536.530258][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1536.530542][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1536.530813][ T11] kthread (kernel/kthread.c:388) 
[ 1536.531065][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1536.531310][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1536.531549][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1536.531792][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1536.713061][   T11] ------------[ cut here ]------------
| [ 1536.713393][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1536.713765][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1536.714261][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1536.715537][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1536.716266][   T11] Workqueue: netns cleanup_net
[ 1536.716559][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.716893][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1536.718036][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1536.718394][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1536.718938][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1536.719407][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1536.719894][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ca9a628
[ 1536.720318][   T11] R13: ffff88800ca9adf8 R14: ffffc900000bfc98 R15: ffff88800ca9abc0
[ 1536.720740][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1536.721212][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1536.721559][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1536.722025][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1536.722552][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1536.723020][   T11] Call Trace:
[ 1536.723213][   T11]  <TASK>
[ 1536.723503][ T11] ? __warn (kernel/panic.c:677) 
[ 1536.723766][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1536.724047][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.724356][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1536.724629][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1536.724877][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1536.725152][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1536.725452][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1536.725721][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.726023][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1536.726299][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1536.726679][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1536.727056][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1536.727368][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1536.727664][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1536.727930][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1536.728232][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1536.728532][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1536.728833][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1536.729094][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1536.729345][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1536.729643][ T11] kthread (kernel/kthread.c:388) 
[ 1536.729890][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1536.730161][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1536.730420][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1536.730706][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1536.897159][   T11] ------------[ cut here ]------------
| [ 1536.897484][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1536.897856][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1536.898404][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1536.899575][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1536.900233][   T11] Workqueue: netns cleanup_net
[ 1536.900499][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.900814][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1536.901845][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1536.902176][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1536.902630][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1536.903099][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1536.903632][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006402628
[ 1536.904080][   T11] R13: ffff888006402df8 R14: ffffc900000bfc98 R15: ffff888006402bc0
[ 1536.904554][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1536.905062][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1536.905508][   T11] CR2: 00007f841d987270 CR3: 0000000024134006 CR4: 00000000001706f0
[ 1536.905934][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1536.906369][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1536.906789][   T11] Call Trace:
[ 1536.906974][   T11]  <TASK>
[ 1536.907134][ T11] ? __warn (kernel/panic.c:677) 
[ 1536.907355][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1536.907637][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.907954][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1536.908234][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1536.908489][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1536.908780][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1536.909077][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1536.909357][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1536.909675][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1536.909948][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1536.910269][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1536.910573][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1536.910852][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1536.911175][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1536.911538][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1536.911950][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1536.912375][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1536.912828][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1536.913231][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1536.913657][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1536.914094][ T11] kthread (kernel/kthread.c:388) 
[ 1536.914467][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1536.914856][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1536.915261][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1536.915645][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1537.100012][   T11] ------------[ cut here ]------------
| [ 1537.100542][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1537.101208][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1537.101950][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1537.103564][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1537.104632][   T11] Workqueue: netns cleanup_net
[ 1537.105066][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1537.105614][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1537.107185][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1537.107570][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1537.108082][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1537.108575][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1537.109068][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c802628
[ 1537.109554][   T11] R13: ffff88800c802df8 R14: ffffc900000bfc98 R15: ffff88800c802bc0
[ 1537.110048][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1537.110590][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1537.110993][   T11] CR2: 00007f04a48e5000 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1537.111473][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1537.111941][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1537.112403][   T11] Call Trace:
[ 1537.112620][   T11]  <TASK>
[ 1537.112776][ T11] ? __warn (kernel/panic.c:677) 
[ 1537.113009][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1537.113276][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1537.113569][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1537.113815][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1537.114058][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1537.114313][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1537.114590][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1537.114830][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1537.115116][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1537.115370][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1537.115699][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1537.115970][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1537.116302][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1537.116762][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1537.117174][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1537.117645][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1537.118116][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1537.118607][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1537.119029][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1537.119485][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1537.119908][ T11] kthread (kernel/kthread.c:388) 
[ 1537.120239][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1537.120606][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1537.120969][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1537.121329][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1557.352331][   T11] ------------[ cut here ]------------
| [ 1557.352696][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1557.353133][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1557.353680][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1557.354706][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1557.355358][   T11] Workqueue: netns cleanup_net
[ 1557.355617][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.355928][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1557.356973][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1557.357301][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1557.357715][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1557.358197][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1557.358696][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c66a628
[ 1557.359163][   T11] R13: ffff88800c66adf8 R14: ffffc900000bfc98 R15: ffff88800c66abc0
[ 1557.359634][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1557.360164][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1557.360538][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa002 CR4: 00000000001706f0
[ 1557.361005][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1557.361475][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1557.361942][   T11] Call Trace:
[ 1557.362137][   T11]  <TASK>
[ 1557.362321][ T11] ? __warn (kernel/panic.c:677) 
[ 1557.362593][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1557.362862][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.363196][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1557.363466][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1557.363724][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1557.364004][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1557.364306][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1557.364569][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.364878][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1557.365165][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1557.365471][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1557.365762][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1557.366022][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1557.366289][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1557.366538][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1557.366815][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1557.367089][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1557.367373][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1557.367617][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1557.367872][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1557.368155][ T11] kthread (kernel/kthread.c:388) 
[ 1557.368379][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1557.368627][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1557.368903][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1557.369249][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1557.568753][   T11] ------------[ cut here ]------------
| [ 1557.569106][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1557.569486][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1557.569976][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1557.571018][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1557.571663][   T11] Workqueue: netns cleanup_net
[ 1557.571927][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.572250][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1557.573356][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1557.573735][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1557.574196][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1557.574647][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1557.575120][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880083b2628
[ 1557.575541][   T11] R13: ffff8880083b2df8 R14: ffffc900000bfc98 R15: ffff8880083b2bc0
[ 1557.575969][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1557.576479][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1557.576936][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1557.577635][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1557.578318][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1557.579007][   T11] Call Trace:
[ 1557.579285][   T11]  <TASK>
[ 1557.579563][ T11] ? __warn (kernel/panic.c:677) 
[ 1557.579934][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1557.580366][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.580837][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1557.581269][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1557.581659][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1557.582078][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1557.582532][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1557.582989][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.583465][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1557.583876][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1557.584372][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1557.584780][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1557.585214][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1557.585649][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1557.586077][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1557.586542][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1557.586993][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1557.587460][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1557.587875][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1557.588325][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1557.588773][ T11] kthread (kernel/kthread.c:388) 
[ 1557.589145][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1557.589514][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1557.589874][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1557.590255][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1557.783390][   T11] ------------[ cut here ]------------
| [ 1557.783753][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1557.784192][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1557.784685][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1557.785697][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1557.786345][   T11] Workqueue: netns cleanup_net
[ 1557.786603][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.786916][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1557.787934][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1557.788318][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1557.788792][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1557.789222][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1557.789646][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800859a628
[ 1557.790100][   T11] R13: ffff88800859adf8 R14: ffffc900000bfc98 R15: ffff88800859abc0
[ 1557.790575][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1557.791111][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1557.791465][   T11] CR2: 0000559e2a4c30f0 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1557.791921][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1557.792383][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1557.792836][   T11] Call Trace:
[ 1557.793022][   T11]  <TASK>
[ 1557.793197][ T11] ? __warn (kernel/panic.c:677) 
[ 1557.793445][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1557.793701][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.794036][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1557.794281][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1557.794547][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1557.794797][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1557.795098][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1557.795336][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1557.795643][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1557.795906][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1557.796230][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1557.796468][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1557.796753][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1557.797024][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1557.797309][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1557.797583][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1557.797849][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1557.798140][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1557.798387][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1557.798641][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1557.798913][ T11] kthread (kernel/kthread.c:388) 
[ 1557.799155][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1557.799402][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1557.799647][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1557.799894][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1558.047066][   T11] ------------[ cut here ]------------
| [ 1558.047585][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1558.048161][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1558.048888][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1558.050463][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1558.051520][   T11] Workqueue: netns cleanup_net
[ 1558.051954][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1558.052456][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1558.054134][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1558.054656][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1558.055342][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1558.056021][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1558.056508][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888005e42628
[ 1558.057085][   T11] R13: ffff888005e42df8 R14: ffffc900000bfc98 R15: ffff888005e42bc0
[ 1558.057768][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1558.058541][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1558.059090][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa001 CR4: 00000000001706f0
[ 1558.059769][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1558.060411][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1558.061055][   T11] Call Trace:
[ 1558.061330][   T11]  <TASK>
[ 1558.061568][ T11] ? __warn (kernel/panic.c:677) 
[ 1558.061897][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1558.062297][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1558.062725][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1558.063104][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1558.063468][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1558.063847][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1558.064266][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1558.064631][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1558.065124][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1558.065545][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1558.065981][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1558.066269][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1558.066530][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1558.066849][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1558.067126][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1558.067409][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1558.067713][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1558.068039][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1558.068317][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1558.068602][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1558.068890][ T11] kthread (kernel/kthread.c:388) 
[ 1558.069131][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1558.069395][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1558.069645][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1558.069934][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1578.431271][   T11] ------------[ cut here ]------------
| [ 1578.431583][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1578.431975][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1578.432468][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1578.433574][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1578.434265][   T11] Workqueue: netns cleanup_net
[ 1578.434536][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.434874][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1578.436007][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1578.436361][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1578.436821][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1578.437298][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1578.437761][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800c4f2628
[ 1578.438206][   T11] R13: ffff88800c4f2df8 R14: ffffc900000bfc98 R15: ffff88800c4f2bc0
[ 1578.438687][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1578.439170][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1578.439517][   T11] CR2: 00007f6a0336ad40 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1578.439942][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1578.440370][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1578.440790][   T11] Call Trace:
[ 1578.440976][   T11]  <TASK>
[ 1578.441136][ T11] ? __warn (kernel/panic.c:677) 
[ 1578.441358][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.441706][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1578.441991][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1578.442256][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1578.442531][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1578.442843][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1578.443105][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.443427][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1578.443695][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1578.444008][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1578.444269][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1578.444546][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1578.444830][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1578.445131][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1578.445418][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1578.445729][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1578.446062][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1578.446338][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1578.446640][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1578.446918][ T11] kthread (kernel/kthread.c:388) 
[ 1578.447179][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1578.447445][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1578.447707][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1578.447986][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1578.635428][   T11] ------------[ cut here ]------------
| [ 1578.635770][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1578.636189][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1578.636691][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1578.637733][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1578.638398][   T11] Workqueue: netns cleanup_net
[ 1578.638731][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.639075][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1578.640224][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1578.640559][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1578.641041][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1578.641507][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1578.641986][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b2aa628
[ 1578.642442][   T11] R13: ffff88800b2aadf8 R14: ffffc900000bfc98 R15: ffff88800b2aabc0
[ 1578.642907][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1578.643430][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1578.643852][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1578.644344][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1578.644807][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1578.645342][   T11] Call Trace:
[ 1578.645529][   T11]  <TASK>
[ 1578.645726][ T11] ? __warn (kernel/panic.c:677) 
[ 1578.645996][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1578.646287][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.646568][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1578.646817][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1578.647059][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1578.647311][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1578.647583][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1578.647824][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.648109][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1578.648363][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1578.648647][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1578.648897][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1578.649183][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1578.649500][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1578.649757][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1578.650090][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1578.650375][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1578.650696][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1578.650971][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1578.651251][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1578.651548][ T11] kthread (kernel/kthread.c:388) 
[ 1578.651799][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1578.652075][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1578.652340][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1578.652619][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1578.818053][   T11] ------------[ cut here ]------------
| [ 1578.818516][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1578.819160][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1578.820028][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1578.821661][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1578.822798][   T11] Workqueue: netns cleanup_net
[ 1578.823275][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.823789][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1578.825531][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1578.826072][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1578.826704][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1578.827351][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1578.827983][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880059da628
[ 1578.828654][   T11] R13: ffff8880059dadf8 R14: ffffc900000bfc98 R15: ffff8880059dabc0
[ 1578.829385][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1578.830164][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1578.830775][   T11] CR2: 0000559e2a4bf5a0 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1578.831328][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1578.831788][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1578.832258][   T11] Call Trace:
[ 1578.832438][   T11]  <TASK>
[ 1578.832598][ T11] ? __warn (kernel/panic.c:677) 
[ 1578.832834][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1578.833113][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.833390][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1578.833633][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1578.833873][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1578.834132][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1578.834403][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1578.834641][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1578.835057][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1578.835348][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1578.835669][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1578.835915][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1578.836179][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1578.836476][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1578.836775][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1578.837082][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1578.837358][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1578.837701][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1578.838127][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1578.838437][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1578.838730][ T11] kthread (kernel/kthread.c:388) 
[ 1578.838985][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1578.839265][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1578.839519][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1578.839776][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1579.023331][   T11] ------------[ cut here ]------------
| [ 1579.023698][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1579.024104][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1579.024614][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1579.025664][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1579.026314][   T11] Workqueue: netns cleanup_net
[ 1579.026627][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1579.027007][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1579.028125][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1579.028475][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1579.028987][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1579.029454][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1579.029923][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800657a628
[ 1579.030404][   T11] R13: ffff88800657adf8 R14: ffffc900000bfc98 R15: ffff88800657abc0
[ 1579.030844][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1579.031393][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1579.031771][   T11] CR2: 00007f73f4d4c270 CR3: 0000000024134002 CR4: 00000000001706f0
[ 1579.032268][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1579.032682][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1579.033135][   T11] Call Trace:
[ 1579.033326][   T11]  <TASK>
[ 1579.033485][ T11] ? __warn (kernel/panic.c:677) 
[ 1579.033705][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1579.033967][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1579.034264][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1579.034520][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1579.034766][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1579.035048][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1579.035356][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1579.035634][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1579.035936][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1579.036269][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1579.036605][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1579.036884][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1579.037169][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1579.037461][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1579.037780][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1579.038074][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1579.038398][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1579.038716][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1579.039017][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1579.039300][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1579.039599][ T11] kthread (kernel/kthread.c:388) 
[ 1579.039854][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1579.040160][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1579.040440][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1579.040715][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1599.487234][   T11] ------------[ cut here ]------------
| [ 1599.487557][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1599.487932][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1599.488506][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1599.489681][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1599.490435][   T11] Workqueue: netns cleanup_net
[ 1599.490730][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.491099][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1599.492346][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1599.492711][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1599.493245][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1599.493787][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1599.494273][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880065b2628
[ 1599.494765][   T11] R13: ffff8880065b2df8 R14: ffffc900000bfc98 R15: ffff8880065b2bc0
[ 1599.495294][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1599.495762][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1599.496123][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa002 CR4: 00000000001706f0
[ 1599.496570][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1599.497012][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1599.497449][   T11] Call Trace:
[ 1599.497698][   T11]  <TASK>
[ 1599.497870][ T11] ? __warn (kernel/panic.c:677) 
[ 1599.498157][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1599.498468][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.498793][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1599.499080][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1599.499364][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1599.499645][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1599.500002][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1599.500282][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.500605][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1599.500899][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1599.501230][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1599.501512][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1599.501821][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1599.502114][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1599.502381][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1599.502734][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1599.503047][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1599.503345][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1599.503641][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1599.503915][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1599.504214][ T11] kthread (kernel/kthread.c:388) 
[ 1599.504452][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1599.504762][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1599.505098][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1599.505395][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1599.680448][   T11] ------------[ cut here ]------------
| [ 1599.680805][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1599.681195][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1599.681722][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1599.682877][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1599.683645][   T11] Workqueue: netns cleanup_net
[ 1599.683970][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.684285][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1599.685366][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1599.685749][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1599.686200][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1599.686686][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1599.687164][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880099ba628
[ 1599.687631][   T11] R13: ffff8880099badf8 R14: ffffc900000bfc98 R15: ffff8880099babc0
[ 1599.688102][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1599.688614][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1599.689023][   T11] CR2: 00007fbdb2171270 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1599.689500][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1599.689966][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1599.690399][   T11] Call Trace:
[ 1599.690574][   T11]  <TASK>
[ 1599.690734][ T11] ? __warn (kernel/panic.c:677) 
[ 1599.690972][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1599.691237][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.691513][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1599.691756][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1599.692001][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1599.692258][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1599.692527][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1599.692763][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.693117][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1599.693429][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1599.693768][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1599.694057][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1599.694347][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1599.694663][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1599.694968][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1599.695269][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1599.695576][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1599.695931][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1599.696240][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1599.696529][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1599.696861][ T11] kthread (kernel/kthread.c:388) 
[ 1599.697148][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1599.697446][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1599.697713][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1599.698017][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1599.915308][   T11] ------------[ cut here ]------------
| [ 1599.915628][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1599.916077][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1599.916652][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1599.917763][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1599.918532][   T11] Workqueue: netns cleanup_net
[ 1599.918796][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.919122][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1599.920226][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1599.920614][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1599.921090][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1599.921539][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1599.922011][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800770a628
[ 1599.922488][   T11] R13: ffff88800770adf8 R14: ffffc900000bfc98 R15: ffff88800770abc0
[ 1599.922969][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1599.923462][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1599.923847][   T11] CR2: 00007fbdb2171270 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1599.924322][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1599.924787][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1599.925242][   T11] Call Trace:
[ 1599.925439][   T11]  <TASK>
[ 1599.925619][ T11] ? __warn (kernel/panic.c:677) 
[ 1599.925895][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1599.926161][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.926441][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1599.926688][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1599.926923][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1599.927180][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1599.927454][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1599.927693][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1599.927975][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1599.928225][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1599.928573][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1599.928847][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1599.929156][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1599.929478][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1599.929774][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1599.930088][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1599.930398][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1599.930734][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1599.931034][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1599.931313][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1599.931629][ T11] kthread (kernel/kthread.c:388) 
[ 1599.931892][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1599.932184][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1599.932449][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1599.932758][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1600.116238][   T11] ------------[ cut here ]------------
| [ 1600.116626][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1600.117128][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1600.117697][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1600.118858][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1600.119591][   T11] Workqueue: netns cleanup_net
[ 1600.119852][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1600.120238][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1600.121337][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1600.121742][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1600.122202][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1600.122691][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1600.123201][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025962628
[ 1600.123673][   T11] R13: ffff888025962df8 R14: ffffc900000bfc98 R15: ffff888025962bc0
[ 1600.124127][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1600.124660][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1600.125113][   T11] CR2: 00007fbdb2171270 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1600.125620][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1600.126089][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1600.126612][   T11] Call Trace:
[ 1600.126802][   T11]  <TASK>
[ 1600.127034][ T11] ? __warn (kernel/panic.c:677) 
[ 1600.127323][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1600.127625][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1600.127986][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1600.128308][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1600.128612][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1600.128902][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1600.129187][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1600.129443][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1600.129735][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1600.130007][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1600.130291][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1600.130551][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1600.130802][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1600.131133][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1600.131439][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1600.131766][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1600.132067][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1600.132405][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1600.132708][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1600.133018][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1600.133318][ T11] kthread (kernel/kthread.c:388) 
[ 1600.133586][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1600.133895][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1600.134197][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1600.134476][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1648.493311][   T11] ------------[ cut here ]------------
| [ 1648.493680][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1648.494121][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1648.494651][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1648.495791][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1648.496498][   T11] Workqueue: netns cleanup_net
[ 1648.496833][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.497162][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1648.498205][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1648.498530][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1648.498948][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1648.499369][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1648.499825][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800cbb2628
[ 1648.500316][   T11] R13: ffff88800cbb2df8 R14: ffffc900000bfc98 R15: ffff88800cbb2bc0
[ 1648.500765][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1648.501293][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1648.501701][   T11] CR2: 00007fff0652aba8 CR3: 0000000024134004 CR4: 00000000001706f0
[ 1648.502173][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1648.502639][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1648.503157][   T11] Call Trace:
[ 1648.503348][   T11]  <TASK>
[ 1648.503523][ T11] ? __warn (kernel/panic.c:677) 
[ 1648.503800][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1648.504091][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.504431][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1648.504728][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1648.504985][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1648.505239][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1648.505511][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1648.505748][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.506032][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1648.506284][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1648.506564][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1648.506811][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1648.507093][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1648.507442][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1648.507717][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1648.508040][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1648.508362][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1648.508683][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1648.508973][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1648.509267][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1648.509561][ T11] kthread (kernel/kthread.c:388) 
[ 1648.509818][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1648.510130][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1648.510382][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1648.510660][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1648.689140][   T11] ------------[ cut here ]------------
| [ 1648.689487][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1648.689914][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1648.690450][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1648.691626][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1648.692392][   T11] Workqueue: netns cleanup_net
[ 1648.692703][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.693044][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1648.694090][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1648.694442][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1648.694875][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1648.695375][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1648.695891][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ae82628
[ 1648.696392][   T11] R13: ffff88800ae82df8 R14: ffffc900000bfc98 R15: ffff88800ae82bc0
[ 1648.696842][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1648.697432][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1648.697840][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa005 CR4: 00000000001706f0
[ 1648.698360][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1648.698794][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1648.699237][   T11] Call Trace:
[ 1648.699424][   T11]  <TASK>
[ 1648.699580][ T11] ? __warn (kernel/panic.c:677) 
[ 1648.699797][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1648.700060][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.700369][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1648.700667][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1648.700937][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1648.701262][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1648.701583][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1648.701896][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.702242][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1648.702512][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1648.702870][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1648.703138][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1648.703421][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1648.703730][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1648.704015][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1648.704323][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1648.704644][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1648.704970][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1648.705254][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1648.705547][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1648.705848][ T11] kthread (kernel/kthread.c:388) 
[ 1648.706105][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1648.706400][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1648.706678][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1648.707015][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1648.881795][   T11] ------------[ cut here ]------------
| [ 1648.882261][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1648.882971][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1648.883763][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1648.885429][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1648.886533][   T11] Workqueue: netns cleanup_net
[ 1648.886989][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.887521][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1648.889262][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1648.889806][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1648.890505][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1648.891136][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1648.891763][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009ae2628
[ 1648.892404][   T11] R13: ffff888009ae2df8 R14: ffffc900000bfc98 R15: ffff888009ae2bc0
[ 1648.893053][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1648.893865][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1648.894473][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa005 CR4: 00000000001706f0
[ 1648.895212][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1648.895924][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1648.896648][   T11] Call Trace:
[ 1648.896943][   T11]  <TASK>
[ 1648.897254][ T11] ? __warn (kernel/panic.c:677) 
[ 1648.897613][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.898107][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1648.898531][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1648.898939][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1648.899348][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1648.899806][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1648.900217][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1648.900719][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1648.901168][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1648.901628][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1648.901997][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1648.902374][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1648.902781][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1648.903167][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1648.903619][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1648.904096][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1648.904586][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1648.905028][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1648.905414][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1648.905817][ T11] kthread (kernel/kthread.c:388) 
[ 1648.906149][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1648.906527][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1648.906887][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1648.907303][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1649.065372][   T11] ------------[ cut here ]------------
| [ 1649.065737][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1649.066165][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1649.066697][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1649.067933][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1649.068583][   T11] Workqueue: netns cleanup_net
[ 1649.068886][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1649.069266][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1649.070354][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1649.070673][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1649.071095][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1649.071517][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1649.071937][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a442628
[ 1649.072360][   T11] R13: ffff88800a442df8 R14: ffffc900000bfc98 R15: ffff88800a442bc0
[ 1649.072847][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1649.073359][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1649.073776][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[ 1649.074269][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1649.074742][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1649.075204][   T11] Call Trace:
[ 1649.075410][   T11]  <TASK>
[ 1649.075599][ T11] ? __warn (kernel/panic.c:677) 
[ 1649.075851][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1649.076139][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1649.076474][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1649.076747][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1649.077048][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1649.077366][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1649.077689][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1649.077966][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1649.078299][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1649.078651][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1649.078998][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1649.079281][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1649.079587][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1649.079919][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1649.080176][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1649.080502][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1649.080800][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1649.081155][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1649.081406][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1649.081726][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1649.082005][ T11] kthread (kernel/kthread.c:388) 
[ 1649.082273][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1649.082520][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1649.082800][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1649.083055][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1696.798364][   T11] ------------[ cut here ]------------
| [ 1696.798714][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1696.799137][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1696.799661][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1696.800732][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1696.801456][   T11] Workqueue: netns cleanup_net
[ 1696.801759][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1696.802118][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1696.803189][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1696.803544][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1696.804031][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1696.804483][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1696.804939][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888025b4a628
[ 1696.805398][   T11] R13: ffff888025b4adf8 R14: ffffc900000bfc98 R15: ffff888025b4abc0
[ 1696.805855][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1696.806372][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1696.806758][   T11] CR2: 00007effb83b030d CR3: 0000000024134004 CR4: 00000000001706f0
[ 1696.807209][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1696.807664][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1696.808159][   T11] Call Trace:
[ 1696.808371][   T11]  <TASK>
[ 1696.808533][ T11] ? __warn (kernel/panic.c:677) 
[ 1696.808786][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1696.809057][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1696.809335][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1696.809583][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1696.809814][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1696.810075][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1696.810346][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1696.810583][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1696.810864][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1696.811123][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1696.811470][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1696.811775][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1696.812073][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1696.812372][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1696.812684][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1696.812965][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1696.813245][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1696.813559][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1696.813853][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1696.814149][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1696.814445][ T11] kthread (kernel/kthread.c:388) 
[ 1696.814710][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1696.815019][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1696.815292][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1696.815561][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1697.009215][   T11] ------------[ cut here ]------------
| [ 1697.009521][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1697.009908][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1697.010404][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1697.011489][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1697.012174][   T11] Workqueue: netns cleanup_net
[ 1697.012498][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.012897][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1697.014117][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1697.014502][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1697.015021][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1697.015483][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1697.016042][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880095f2628
[ 1697.016482][   T11] R13: ffff8880095f2df8 R14: ffffc900000bfc98 R15: ffff8880095f2bc0
[ 1697.016905][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1697.017380][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1697.017753][   T11] CR2: 00007fbecce0311c CR3: 0000000024134001 CR4: 00000000001706f0
[ 1697.018200][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1697.018637][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1697.019189][   T11] Call Trace:
[ 1697.019408][   T11]  <TASK>
[ 1697.019582][ T11] ? __warn (kernel/panic.c:677) 
[ 1697.019842][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1697.020107][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.020466][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1697.020754][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1697.021034][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1697.021338][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1697.021667][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1697.021935][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.022287][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1697.022588][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1697.022919][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1697.023177][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1697.023471][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1697.023764][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1697.024039][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1697.024352][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1697.024616][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1697.024935][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1697.025194][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1697.025463][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1697.025762][ T11] kthread (kernel/kthread.c:388) 
[ 1697.025993][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1697.026251][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1697.026506][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1697.026764][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1697.230361][   T11] ------------[ cut here ]------------
| [ 1697.230673][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1697.231053][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1697.231534][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1697.232561][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1697.233399][   T11] Workqueue: netns cleanup_net
[ 1697.233705][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.234089][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1697.235199][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1697.235561][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1697.236026][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1697.236479][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1697.236955][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800955a628
[ 1697.237417][   T11] R13: ffff88800955adf8 R14: ffffc900000bfc98 R15: ffff88800955abc0
[ 1697.237866][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1697.238341][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1697.238689][   T11] CR2: 00007f0df5b3e270 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1697.239120][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1697.239530][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1697.239948][   T11] Call Trace:
[ 1697.240135][   T11]  <TASK>
[ 1697.240294][ T11] ? __warn (kernel/panic.c:677) 
[ 1697.240511][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1697.240843][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.241186][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1697.241466][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1697.241722][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1697.242036][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1697.242305][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1697.242549][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.242879][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1697.243194][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1697.243524][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1697.243796][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1697.244103][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1697.244427][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1697.244721][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1697.245030][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1697.245344][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1697.245685][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1697.245984][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1697.246261][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1697.246586][ T11] kthread (kernel/kthread.c:388) 
[ 1697.246853][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1697.247156][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1697.247440][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1697.247739][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1697.442012][   T11] ------------[ cut here ]------------
| [ 1697.442325][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1697.442756][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1697.443384][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1697.444418][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1697.445073][   T11] Workqueue: netns cleanup_net
[ 1697.445332][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.445640][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1697.446744][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1697.447143][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1697.447591][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1697.448051][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1697.448518][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b082628
[ 1697.448934][   T11] R13: ffff88800b082df8 R14: ffffc900000bfc98 R15: ffff88800b082bc0
[ 1697.449406][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1697.449923][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1697.450321][   T11] CR2: 0000559e2a8d1000 CR3: 00000000079aa001 CR4: 00000000001706f0
[ 1697.450773][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1697.451244][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1697.451713][   T11] Call Trace:
[ 1697.451916][   T11]  <TASK>
[ 1697.452107][ T11] ? __warn (kernel/panic.c:677) 
[ 1697.452361][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1697.452678][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.452996][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1697.453269][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1697.453538][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1697.453827][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1697.454138][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1697.454403][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1697.454714][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1697.455012][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1697.455327][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1697.455590][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1697.455870][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1697.456186][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1697.456466][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1697.456762][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1697.457070][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1697.457402][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1697.457686][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1697.457969][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1697.458283][ T11] kthread (kernel/kthread.c:388) 
[ 1697.458524][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1697.458798][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1697.459078][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1697.459347][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1745.646289][   T11] ------------[ cut here ]------------
| [ 1745.646604][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1745.646980][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1745.647462][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1745.648479][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1745.649264][   T11] Workqueue: netns cleanup_net
[ 1745.649527][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1745.649838][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1745.650906][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1745.651295][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1745.651780][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1745.652271][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1745.652725][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800d682628
[ 1745.653210][   T11] R13: ffff88800d682df8 R14: ffffc900000bfc98 R15: ffff88800d682bc0
[ 1745.653728][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1745.654260][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1745.654644][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa004 CR4: 00000000001706f0
[ 1745.655133][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1745.655647][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1745.656148][   T11] Call Trace:
[ 1745.656356][   T11]  <TASK>
[ 1745.656517][ T11] ? __warn (kernel/panic.c:677) 
[ 1745.656799][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1745.657145][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1745.657468][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1745.657727][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1745.658031][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1745.658348][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1745.658654][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1745.658988][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1745.659268][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1745.659614][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1745.659914][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1745.660204][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1745.660525][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1745.660806][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1745.661159][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1745.661496][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1745.661861][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1745.662157][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1745.662497][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1745.662861][ T11] kthread (kernel/kthread.c:388) 
[ 1745.663140][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1745.663416][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1745.663739][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1745.664076][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1745.865265][   T11] ------------[ cut here ]------------
| [ 1745.865592][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1745.866012][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1745.866560][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1745.867751][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1745.868425][   T11] Workqueue: netns cleanup_net
[ 1745.868693][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1745.869014][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1745.870062][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1745.870391][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1745.870814][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1745.871249][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1745.871705][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880062e2628
[ 1745.872256][   T11] R13: ffff8880062e2df8 R14: ffffc900000bfc98 R15: ffff8880062e2bc0
[ 1745.872739][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1745.873221][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1745.873639][   T11] CR2: 00007f3330d75000 CR3: 0000000024134005 CR4: 00000000001706f0
[ 1745.874104][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1745.874596][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1745.875068][   T11] Call Trace:
[ 1745.875262][   T11]  <TASK>
[ 1745.875456][ T11] ? __warn (kernel/panic.c:677) 
[ 1745.875722][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1745.876025][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1745.876340][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1745.876623][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1745.876884][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1745.877182][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1745.877479][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1745.877722][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1745.878027][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1745.878278][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1745.878558][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1745.878799][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1745.879060][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1745.879325][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1745.879585][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1745.879887][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1745.880220][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1745.880548][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1745.880805][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1745.881100][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1745.881416][ T11] kthread (kernel/kthread.c:388) 
[ 1745.881641][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1745.881981][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1745.882283][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1745.882553][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1746.082289][   T11] ------------[ cut here ]------------
| [ 1746.082609][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1746.082994][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1746.083481][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1746.084492][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1746.085179][   T11] Workqueue: netns cleanup_net
[ 1746.085439][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1746.085758][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1746.086793][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1746.087132][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1746.087557][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1746.087985][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1746.088404][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880082d2628
[ 1746.088823][   T11] R13: ffff8880082d2df8 R14: ffffc900000bfc98 R15: ffff8880082d2bc0
[ 1746.089258][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1746.089731][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1746.090085][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[ 1746.090503][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1746.090920][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1746.091343][   T11] Call Trace:
[ 1746.091523][   T11]  <TASK>
[ 1746.091681][ T11] ? __warn (kernel/panic.c:677) 
[ 1746.091902][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1746.092198][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1746.092444][ T11] ? restore_regs_and_return_to_kernel (arch/x86/entry/entry_64.S:658) 
[ 1746.092835][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1746.093081][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1746.093392][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1746.093666][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1746.093907][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1746.094193][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1746.094477][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1746.094783][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1746.095033][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1746.095284][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1746.095548][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1746.095802][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1746.096084][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1746.096350][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1746.096642][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1746.096892][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1746.097150][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1746.097428][ T11] kthread (kernel/kthread.c:388) 
[ 1746.097648][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1746.097891][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1746.098137][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1746.098382][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1746.306102][   T11] ------------[ cut here ]------------
| [ 1746.306671][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1746.307318][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1746.308141][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1746.309747][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1746.310767][   T11] Workqueue: netns cleanup_net
[ 1746.311170][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1746.311640][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1746.313344][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1746.313883][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1746.314581][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1746.315289][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1746.315993][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009ae2628
[ 1746.316713][   T11] R13: ffff888009ae2df8 R14: ffffc900000bfc98 R15: ffff888009ae2bc0
[ 1746.317403][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1746.318178][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1746.318763][   T11] CR2: 00007ffd4406ad8c CR3: 0000000024134005 CR4: 00000000001706f0
[ 1746.319457][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1746.320157][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1746.320781][   T11] Call Trace:
[ 1746.321059][   T11]  <TASK>
[ 1746.321296][ T11] ? __warn (kernel/panic.c:677) 
[ 1746.321629][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1746.322029][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1746.322514][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1746.322915][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1746.323272][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1746.323650][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1746.324066][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1746.324427][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1746.324846][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1746.325233][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1746.325653][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1746.326019][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1746.326388][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1746.326780][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1746.327100][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1746.327376][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1746.327636][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1746.327948][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1746.328242][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1746.328506][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1746.328802][ T11] kthread (kernel/kthread.c:388) 
[ 1746.329057][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1746.329320][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1746.329588][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1746.329862][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1794.275692][   T11] ------------[ cut here ]------------
| [ 1794.276024][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1794.276407][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1794.276890][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1794.277944][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1794.278596][   T11] Workqueue: netns cleanup_net
[ 1794.278922][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.279274][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1794.280332][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1794.280654][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1794.281079][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1794.281500][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1794.281972][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007b22628
[ 1794.282468][   T11] R13: ffff888007b22df8 R14: ffffc900000bfc98 R15: ffff888007b22bc0
[ 1794.282974][   T11] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 1794.283483][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1794.283872][   T11] CR2: 00007ffe4ebc8f18 CR3: 00000000079aa003 CR4: 00000000001706f0
[ 1794.284355][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1794.284844][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1794.285354][   T11] Call Trace:
[ 1794.285569][   T11]  <TASK>
[ 1794.285747][ T11] ? __warn (kernel/panic.c:677) 
[ 1794.285995][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1794.286290][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.286601][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1794.286885][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1794.287163][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1794.287461][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1794.287797][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1794.288078][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.288401][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1794.288732][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1794.289037][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1794.289343][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.289665][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1794.289944][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.290302][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1794.290577][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1794.290843][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1794.291134][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1794.291380][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1794.291633][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1794.291927][ T11] kthread (kernel/kthread.c:388) 
[ 1794.292156][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1794.292402][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1794.292704][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1794.292991][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1794.466008][   T11] ------------[ cut here ]------------
| [ 1794.466310][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1794.466683][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1794.467177][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1794.468247][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1794.469056][   T11] Workqueue: netns cleanup_net
[ 1794.469313][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.469624][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1794.470642][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1794.471035][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1794.471456][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1794.471987][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1794.472514][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880069f2628
[ 1794.473045][   T11] R13: ffff8880069f2df8 R14: ffffc900000bfc98 R15: ffff8880069f2bc0
[ 1794.473537][   T11] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[ 1794.474098][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1794.474537][   T11] CR2: 00007fd53734f7f0 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1794.475007][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1794.475534][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1794.476032][   T11] Call Trace:
[ 1794.476277][   T11]  <TASK>
[ 1794.476450][ T11] ? __warn (kernel/panic.c:677) 
[ 1794.476715][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1794.477021][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.477346][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1794.477618][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1794.477889][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1794.478186][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1794.478505][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1794.478793][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.479113][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1794.479417][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1794.479727][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1794.480007][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.480283][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1794.480564][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.480814][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1794.481094][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1794.481360][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1794.481648][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1794.481896][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1794.482162][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1794.482435][ T11] kthread (kernel/kthread.c:388) 
[ 1794.482650][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1794.482937][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1794.483210][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1794.483485][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1794.653081][   T11] ------------[ cut here ]------------
| [ 1794.653418][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1794.653847][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1794.654448][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1794.655650][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1794.656353][   T11] Workqueue: netns cleanup_net
[ 1794.656613][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.656923][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1794.657943][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1794.658270][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1794.658690][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1794.659292][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1794.659771][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88802585a628
[ 1794.660268][   T11] R13: ffff88802585adf8 R14: ffffc900000bfc98 R15: ffff88802585abc0
[ 1794.660757][   T11] FS:  0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000
[ 1794.661272][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1794.661688][   T11] CR2: 00007ffe4ebc8f48 CR3: 00000000079aa006 CR4: 00000000001706f0
[ 1794.662154][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1794.662653][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1794.663124][   T11] Call Trace:
[ 1794.663343][   T11]  <TASK>
[ 1794.663540][ T11] ? __warn (kernel/panic.c:677) 
[ 1794.663773][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1794.664099][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.664406][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1794.664705][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1794.665006][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1794.665287][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1794.665555][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1794.665790][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.666078][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1794.666330][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1794.666609][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1794.666849][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.667105][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1794.667367][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.667618][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1794.667894][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1794.668192][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1794.668539][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1794.668835][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1794.669139][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1794.669455][ T11] kthread (kernel/kthread.c:388) 
[ 1794.669742][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1794.670048][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1794.670364][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1794.670649][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 1794.849220][   T11] ------------[ cut here ]------------
| [ 1794.849532][   T11] sysfs group 'bridge' not found for kobject 'br0'
| [ 1794.849901][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [ 1794.850396][   T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[ 1794.851497][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1794.852249][   T11] Workqueue: netns cleanup_net
[ 1794.852615][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.852999][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 9c 89 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff
All code
========
   0:	89 d9                	mov    %ebx,%ecx
   2:	49 8b 14 24          	mov    (%r12),%rdx
   6:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   d:	fc ff df 
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  18:	75 45                	jne    0x5f
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 a7 9c 89 	mov    $0xffffffff899ca7a0,%rdi
  24:	e8 60 65 5e ff       	call   0xffffffffff5e6589
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	48 83 c4 08          	add    $0x8,%rsp
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	e8 e9 c7 da ff       	call   0xffffffffffdac829

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	48 83 c4 08          	add    $0x8,%rsp
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	e8 e9 c7 da ff       	call   0xffffffffffdac7ff
[ 1794.854072][   T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282
[ 1794.854394][   T11] RAX: 0000000000000000 RBX: ffffffff89dbe220 RCX: ffffffff86d1056f
[ 1794.854814][   T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
[ 1794.855238][   T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19
[ 1794.855652][   T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800d812628
[ 1794.856087][   T11] R13: ffff88800d812df8 R14: ffffc900000bfc98 R15: ffff88800d812bc0
[ 1794.856534][   T11] FS:  0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000
[ 1794.857037][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1794.857485][   T11] CR2: 00007fb4acd1d270 CR3: 0000000024134001 CR4: 00000000001706f0
[ 1794.857978][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1794.858465][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1794.859000][   T11] Call Trace:
[ 1794.859180][   T11]  <TASK>
[ 1794.859341][ T11] ? __warn (kernel/panic.c:677) 
[ 1794.859622][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) 
[ 1794.859955][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.860294][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 1794.860583][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 1794.860861][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 1794.861178][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 1794.861503][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) 
[ 1794.861767][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 1794.862117][ T11] br_dev_delete (net/bridge/br_if.c:396) 
[ 1794.862437][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[ 1794.862804][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 1794.863086][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.863392][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 1794.863721][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 1794.863979][ T11] ? process_one_work (kernel/workqueue.c:2609) 
[ 1794.864253][ T11] process_one_work (kernel/workqueue.c:2638) 
[ 1794.864521][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 1794.864807][ T11] ? assign_work (kernel/workqueue.c:1101) 
[ 1794.865061][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 1794.865316][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 1794.865590][ T11] kthread (kernel/kthread.c:388) 
[ 1794.865806][ T11] ? __pfx_kthread (kernel/kthread.c:341) 
[ 1794.866099][ T11] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 1794.866364][ T11] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:print_report:kasan_report:kobject_put
refcount_warn_saturate:br_sysfs_delbr:br_dev_delete:br_net_exit_batch_rtnl
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
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sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net
sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net