======================================
| [    9.572423] ------------[ cut here ]------------
| [    9.573061] refcount_t: underflow; use-after-free.
| [    9.573739] WARNING: CPU: 1 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
| [    9.574852] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[    9.576599] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    9.577885] Workqueue: netns cleanup_net
[    9.578231] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[ 9.578665] Code: 0b 90 90 c3 cc cc cc cc 80 3d 69 d4 67 01 00 0f 85 75 ff ff ff c6 05 5c d4 67 01 01 90 48 c7 c7 b8 37 93 99 e8 a1 26 b4 ff 90 <0f> 0b 90 90 c3 cc cc cc cc 80 3d 3c d4 67 01 00 0f 85 4a ff ff ff
All code
========
   0:	0b 90 90 c3 cc cc    	or     -0x33333c70(%rax),%edx
   6:	cc                   	int3
   7:	cc                   	int3
   8:	80 3d 69 d4 67 01 00 	cmpb   $0x0,0x167d469(%rip)        # 0x167d478
   f:	0f 85 75 ff ff ff    	jne    0xffffffffffffff8a
  15:	c6 05 5c d4 67 01 01 	movb   $0x1,0x167d45c(%rip)        # 0x167d478
  1c:	90                   	nop
  1d:	48 c7 c7 b8 37 93 99 	mov    $0xffffffff999337b8,%rdi
  24:	e8 a1 26 b4 ff       	call   0xffffffffffb426ca
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	80 3d 3c d4 67 01 00 	cmpb   $0x0,0x167d43c(%rip)        # 0x167d476
  3a:	0f 85 4a ff ff ff    	jne    0xffffffffffffff8a

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	80 3d 3c d4 67 01 00 	cmpb   $0x0,0x167d43c(%rip)        # 0x167d44c
  10:	0f 85 4a ff ff ff    	jne    0xffffffffffffff60
[    9.579604] RSP: 0018:ffffae1e40063d78 EFLAGS: 00010286
[    9.579881] RAX: 0000000000000000 RBX: ffff9bbec217a000 RCX: 00000000ffffdfff
[    9.580259] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    9.580622] RBP: ffff9bbec217a610 R08: ffffffff99d78508 R09: 00000000ffffdfff
[    9.580997] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217a000
[    9.581360] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec3be0050
[    9.581725] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[    9.582146] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.582444] CR2: 0000555b8ad16dec CR3: 00000000026cc004 CR4: 0000000000770ef0
[    9.582809] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.583182] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.583564] PKRU: 55555554
[    9.583711] Call Trace:
[    9.583844]  <TASK>
[    9.583983] ? __warn (kernel/panic.c:677) 
[    9.584158] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[    9.584399] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[    9.584596] ? handle_bug (arch/x86/kernel/traps.c:238) 
[    9.584782] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[    9.584996] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    9.585220] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[    9.585463] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) 
[    9.585704] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) 
[    9.585910] br_dev_delete (net/bridge/br_if.c:396) 
[    9.586106] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[    9.586338] cleanup_net (net/core/net_namespace.c:630) 
[    9.586530] ? process_one_work (kernel/workqueue.c:2606) 
[    9.586746] process_one_work (kernel/workqueue.c:2633) 
[    9.586971] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[    9.587171] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[    9.587394] kthread (kernel/kthread.c:388) 
[    9.587563] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.587761] ret_from_fork (arch/x86/kernel/process.c:147) 
[    9.587965] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.588163] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [    9.590671] ------------[ cut here ]------------
| [    9.591048] sysfs group 'bridge' not found for kobject 'br0'
| [    9.591659] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [    9.592304] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[    9.593061] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    9.594093] Workqueue: netns cleanup_net
[    9.594684] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 9.595329] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[    9.597312] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[    9.597985] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[    9.599055] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    9.600108] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[    9.601163] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217a610
[    9.602199] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec3be0050
[    9.603244] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[    9.604411] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.605281] CR2: 0000555b8ad16dec CR3: 000000003ce60001 CR4: 0000000000770ef0
[    9.606121] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.606732] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.607222] PKRU: 55555554
[    9.607369] Call Trace:
[    9.607502]  <TASK>
[    9.607620] ? __warn (kernel/panic.c:677) 
[    9.607894] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.608277] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[    9.608610] ? handle_bug (arch/x86/kernel/traps.c:238) 
[    9.608859] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[    9.609089] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    9.609493] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.609919] br_dev_delete (net/bridge/br_if.c:396) 
[    9.610318] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[    9.610793] cleanup_net (net/core/net_namespace.c:630) 
[    9.611195] ? process_one_work (kernel/workqueue.c:2606) 
[    9.611632] process_one_work (kernel/workqueue.c:2633) 
[    9.612095] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[    9.612517] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[    9.612991] kthread (kernel/kthread.c:388) 
[    9.613327] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.613722] ret_from_fork (arch/x86/kernel/process.c:147) 
[    9.614106] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.614548] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [    9.730148] ------------[ cut here ]------------
| [    9.730762] sysfs group 'bridge' not found for kobject 'br0'
| [    9.731525] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [    9.732214] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[    9.733558] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    9.734486] Workqueue: netns cleanup_net
[    9.734812] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 9.735117] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[    9.736973] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[    9.737527] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[    9.738222] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    9.738985] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[    9.739677] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b58610
[    9.740436] R13: ffffae1e40063e08 R14: ffff9bbec3b58b80 R15: ffffffff9b278f90
[    9.741224] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[    9.742074] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.742674] CR2: 0000555b8ad16dec CR3: 000000003ce60001 CR4: 0000000000770ef0
[    9.743483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.744148] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.744883] PKRU: 55555554
[    9.745182] Call Trace:
[    9.745468]  <TASK>
[    9.745695] ? __warn (kernel/panic.c:677) 
[    9.746054] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.746466] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[    9.746797] ? handle_bug (arch/x86/kernel/traps.c:238) 
[    9.747166] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[    9.747536] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    9.747909] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.748132] br_dev_delete (net/bridge/br_if.c:396) 
[    9.748357] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[    9.748713] cleanup_net (net/core/net_namespace.c:630) 
[    9.748919] ? process_one_work (kernel/workqueue.c:2606) 
[    9.749143] process_one_work (kernel/workqueue.c:2633) 
[    9.749356] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[    9.749554] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[    9.749780] kthread (kernel/kthread.c:388) 
[    9.749960] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.750161] ret_from_fork (arch/x86/kernel/process.c:147) 
[    9.750351] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.750548] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [    9.753084] ------------[ cut here ]------------
| [    9.753338] sysfs group 'bridge' not found for kobject 'br0'
| [    9.753670] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [    9.754091] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[    9.754826] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    9.755403] Workqueue: netns cleanup_net
[    9.755611] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 9.755860] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[    9.756789] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[    9.757065] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[    9.757424] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    9.757784] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[    9.758150] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec389e610
[    9.758511] R13: ffffae1e40063e08 R14: ffff9bbec389eb80 R15: ffffffff9b278f90
[    9.758873] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[    9.759284] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.759578] CR2: 0000555b8ad16dec CR3: 00000000026cc006 CR4: 0000000000770ef0
[    9.759947] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.760307] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.760666] PKRU: 55555554
[    9.760813] Call Trace:
[    9.760950]  <TASK>
[    9.761068] ? __warn (kernel/panic.c:677) 
[    9.761241] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.761457] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[    9.761652] ? handle_bug (arch/x86/kernel/traps.c:238) 
[    9.761838] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[    9.762045] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    9.762269] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.762486] br_dev_delete (net/bridge/br_if.c:396) 
[    9.762676] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[    9.762913] cleanup_net (net/core/net_namespace.c:630) 
[    9.763105] ? process_one_work (kernel/workqueue.c:2606) 
[    9.763321] process_one_work (kernel/workqueue.c:2633) 
[    9.763546] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[    9.763742] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[    9.763971] kthread (kernel/kthread.c:388) 
[    9.764139] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.764336] ret_from_fork (arch/x86/kernel/process.c:147) 
[    9.764525] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.764723] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [    9.767204] ------------[ cut here ]------------
| [    9.767440] sysfs group 'bridge' not found for kobject 'br0'
| [    9.767737] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [    9.768147] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[    9.768871] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    9.769441] Workqueue: netns cleanup_net
[    9.769645] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 9.769891] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[    9.770809] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[    9.771079] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[    9.771436] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    9.771791] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[    9.772156] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2178610
[    9.772514] R13: ffffae1e40063e08 R14: ffff9bbec2178b80 R15: ffffffff9b278f90
[    9.772872] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[    9.773280] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.773580] CR2: 0000555b8ad16dec CR3: 00000000026cc006 CR4: 0000000000770ef0
[    9.773944] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.774301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.774661] PKRU: 55555554
[    9.774803] Call Trace:
[    9.774939]  <TASK>
[    9.775055] ? __warn (kernel/panic.c:677) 
[    9.775225] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.775439] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[    9.775631] ? handle_bug (arch/x86/kernel/traps.c:238) 
[    9.775813] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[    9.776018] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    9.776238] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[    9.776452] br_dev_delete (net/bridge/br_if.c:396) 
[    9.776640] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[    9.776868] cleanup_net (net/core/net_namespace.c:630) 
[    9.777062] ? process_one_work (kernel/workqueue.c:2606) 
[    9.777277] process_one_work (kernel/workqueue.c:2633) 
[    9.777489] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[    9.777685] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[    9.777912] kthread (kernel/kthread.c:388) 
[    9.778077] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.778274] ret_from_fork (arch/x86/kernel/process.c:147) 
[    9.778461] ? __pfx_kthread (kernel/kthread.c:341) 
[    9.778656] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   17.652095] ------------[ cut here ]------------
| [   17.652374] sysfs group 'bridge' not found for kobject 'br0'
| [   17.652845] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   17.653597] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   17.654931] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   17.655967] Workqueue: netns cleanup_net
[   17.656335] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 17.656770] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   17.658433] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   17.658874] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   17.659472] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   17.660101] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   17.660674] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b5a610
[   17.661263] R13: ffffae1e40063e08 R14: ffff9bbec3b5ab80 R15: ffff9bbec3be2e50
[   17.661757] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   17.662210] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.662501] CR2: 00007f9d953300e0 CR3: 0000000002802003 CR4: 0000000000770ef0
[   17.662862] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.663226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.663596] PKRU: 55555554
[   17.663738] Call Trace:
[   17.663869]  <TASK>
[   17.663992] ? __warn (kernel/panic.c:677) 
[   17.664167] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.664385] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   17.664581] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   17.664766] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   17.664973] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   17.665194] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.665414] br_dev_delete (net/bridge/br_if.c:396) 
[   17.665605] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   17.665833] cleanup_net (net/core/net_namespace.c:630) 
[   17.666032] ? process_one_work (kernel/workqueue.c:2606) 
[   17.666251] process_one_work (kernel/workqueue.c:2633) 
[   17.666462] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   17.666659] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   17.666883] kthread (kernel/kthread.c:388) 
[   17.667057] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.667255] ret_from_fork (arch/x86/kernel/process.c:147) 
[   17.667445] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.667641] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   17.761083] ------------[ cut here ]------------
| [   17.761537] sysfs group 'bridge' not found for kobject 'br0'
| [   17.762073] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   17.762799] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   17.764156] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   17.765186] Workqueue: netns cleanup_net
[   17.765495] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 17.765910] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   17.767381] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   17.767822] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   17.768397] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   17.768776] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   17.769236] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b58610
[   17.769665] R13: ffffae1e40063e08 R14: ffff9bbec3b58b80 R15: ffff9bbec3be1750
[   17.770032] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   17.770746] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.771333] CR2: 00007f9d953300e0 CR3: 0000000002802003 CR4: 0000000000770ef0
[   17.771860] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.772542] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.773023] PKRU: 55555554
[   17.773254] Call Trace:
[   17.773502]  <TASK>
[   17.773711] ? __warn (kernel/panic.c:677) 
[   17.774039] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.774454] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   17.774849] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   17.775236] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   17.775652] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   17.776104] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.776522] br_dev_delete (net/bridge/br_if.c:396) 
[   17.776857] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   17.777275] cleanup_net (net/core/net_namespace.c:630) 
[   17.777642] ? process_one_work (kernel/workqueue.c:2606) 
[   17.778088] process_one_work (kernel/workqueue.c:2633) 
[   17.778499] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   17.778917] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   17.779347] kthread (kernel/kthread.c:388) 
[   17.779653] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.780055] ret_from_fork (arch/x86/kernel/process.c:147) 
[   17.780435] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.780731] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   17.784041] ------------[ cut here ]------------
| [   17.784313] sysfs group 'bridge' not found for kobject 'br0'
| [   17.784627] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   17.785190] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   17.786437] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   17.787505] Workqueue: netns cleanup_net
[   17.787871] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 17.788324] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   17.790054] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   17.790477] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   17.791108] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   17.791692] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   17.792303] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b5e610
[   17.792937] R13: ffffae1e40063e08 R14: ffff9bbec3b5eb80 R15: ffff9bbec3be1750
[   17.793351] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[   17.793832] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.794161] CR2: 00007efcb583b270 CR3: 0000000002636001 CR4: 0000000000770ef0
[   17.794664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.795061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.795730] PKRU: 55555554
[   17.795908] Call Trace:
[   17.796042]  <TASK>
[   17.796179] ? __warn (kernel/panic.c:677) 
[   17.796506] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.796867] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   17.797220] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   17.797608] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   17.798019] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   17.798442] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.798915] br_dev_delete (net/bridge/br_if.c:396) 
[   17.799291] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   17.799767] cleanup_net (net/core/net_namespace.c:630) 
[   17.800127] ? process_one_work (kernel/workqueue.c:2606) 
[   17.800532] process_one_work (kernel/workqueue.c:2633) 
[   17.800964] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   17.801421] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   17.801914] kthread (kernel/kthread.c:388) 
[   17.802238] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.802624] ret_from_fork (arch/x86/kernel/process.c:147) 
[   17.803048] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.803436] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   17.920077] ------------[ cut here ]------------
| [   17.920531] sysfs group 'bridge' not found for kobject 'br0'
| [   17.920871] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   17.921374] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   17.922300] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   17.923157] Workqueue: netns cleanup_net
[   17.923427] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 17.923835] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   17.925662] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   17.926201] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   17.926900] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   17.927611] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   17.928271] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3830610
[   17.928965] R13: ffffae1e40063e08 R14: ffff9bbec3830b80 R15: ffff9bbec5011750
[   17.929618] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[   17.930315] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.930825] CR2: 00007efcb583b270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[   17.931468] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.932111] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.932755] PKRU: 55555554
[   17.932900] Call Trace:
[   17.933039]  <TASK>
[   17.933200] ? __warn (kernel/panic.c:677) 
[   17.933425] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.933685] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   17.933878] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   17.934069] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   17.934299] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   17.934521] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   17.934738] br_dev_delete (net/bridge/br_if.c:396) 
[   17.934942] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   17.935171] cleanup_net (net/core/net_namespace.c:630) 
[   17.935390] ? process_one_work (kernel/workqueue.c:2606) 
[   17.935608] process_one_work (kernel/workqueue.c:2633) 
[   17.935819] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   17.936022] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   17.936246] kthread (kernel/kthread.c:388) 
[   17.936416] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.936639] ret_from_fork (arch/x86/kernel/process.c:147) 
[   17.936831] ? __pfx_kthread (kernel/kthread.c:341) 
[   17.937033] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   25.528243] ------------[ cut here ]------------
| [   25.528499] sysfs group 'bridge' not found for kobject 'br0'
| [   25.528812] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   25.529238] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   25.530120] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.530698] Workqueue: netns cleanup_net
[   25.531004] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 25.531311] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   25.532455] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   25.532780] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   25.533281] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   25.533891] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   25.534524] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3836610
[   25.535186] R13: ffffae1e40063e08 R14: ffff9bbec3836b80 R15: ffff9bbec5012e50
[   25.535817] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[   25.536538] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.537081] CR2: 000000000041af40 CR3: 000000003ce60003 CR4: 0000000000770ef0
[   25.537708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.538360] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.539042] PKRU: 55555554
[   25.539280] Call Trace:
[   25.539470]  <TASK>
[   25.539682] ? __warn (kernel/panic.c:677) 
[   25.539968] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.540352] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   25.540676] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   25.540995] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   25.541326] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   25.541653] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.542047] br_dev_delete (net/bridge/br_if.c:396) 
[   25.542347] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   25.542695] cleanup_net (net/core/net_namespace.c:630) 
[   25.542888] ? process_one_work (kernel/workqueue.c:2606) 
[   25.543136] process_one_work (kernel/workqueue.c:2633) 
[   25.543383] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   25.543585] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   25.543811] kthread (kernel/kthread.c:388) 
[   25.543994] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.544192] ret_from_fork (arch/x86/kernel/process.c:147) 
[   25.544384] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.544581] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   25.623069] ------------[ cut here ]------------
| [   25.623478] sysfs group 'bridge' not found for kobject 'br0'
| [   25.623982] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   25.624643] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   25.625873] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.626845] Workqueue: netns cleanup_net
[   25.627191] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 25.627571] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   25.628993] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   25.629260] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   25.629680] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   25.630045] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   25.630405] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a4610
[   25.630957] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec5011750
[   25.631387] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   25.632048] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.632537] CR2: 00007fe9c34bb000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   25.633187] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.633810] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.634457] PKRU: 55555554
[   25.634727] Call Trace:
[   25.634978]  <TASK>
[   25.635181] ? __warn (kernel/panic.c:677) 
[   25.635478] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.635853] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   25.636210] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   25.636549] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   25.636925] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   25.637316] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.637700] br_dev_delete (net/bridge/br_if.c:396) 
[   25.637999] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   25.638376] cleanup_net (net/core/net_namespace.c:630) 
[   25.638680] ? process_one_work (kernel/workqueue.c:2606) 
[   25.639021] process_one_work (kernel/workqueue.c:2633) 
[   25.639367] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   25.639657] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   25.640025] kthread (kernel/kthread.c:388) 
[   25.640284] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.640603] ret_from_fork (arch/x86/kernel/process.c:147) 
[   25.640941] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.641208] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   25.644200] ------------[ cut here ]------------
| [   25.644542] sysfs group 'bridge' not found for kobject 'br0'
| [   25.644961] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   25.645569] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   25.646770] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.647712] Workqueue: netns cleanup_net
[   25.648050] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 25.648453] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   25.649975] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   25.650420] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   25.651032] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   25.651584] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   25.652155] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3830610
[   25.652719] R13: ffffae1e40063e08 R14: ffff9bbec3830b80 R15: ffff9bbec5011750
[   25.653294] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   25.653955] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.654367] CR2: 00007fe9c34bb000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   25.654921] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.655363] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.655755] PKRU: 55555554
[   25.655928] Call Trace:
[   25.656065]  <TASK>
[   25.656261] ? __warn (kernel/panic.c:677) 
[   25.656492] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.656710] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   25.656911] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   25.657096] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   25.657391] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   25.657780] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.658179] br_dev_delete (net/bridge/br_if.c:396) 
[   25.658429] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   25.658785] cleanup_net (net/core/net_namespace.c:630) 
[   25.659120] ? process_one_work (kernel/workqueue.c:2606) 
[   25.659349] process_one_work (kernel/workqueue.c:2633) 
[   25.659656] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   25.659952] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   25.660357] kthread (kernel/kthread.c:388) 
[   25.660643] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.661002] ret_from_fork (arch/x86/kernel/process.c:147) 
[   25.661343] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.661703] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   25.809100] ------------[ cut here ]------------
| [   25.809369] sysfs group 'bridge' not found for kobject 'br0'
| [   25.809682] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   25.810113] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   25.810863] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.811458] Workqueue: netns cleanup_net
[   25.811666] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 25.811933] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   25.812874] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   25.813148] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   25.813524] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   25.813893] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   25.814267] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39b8610
[   25.814630] R13: ffffae1e40063e08 R14: ffff9bbec39b8b80 R15: ffff9bbec5014550
[   25.815012] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   25.815430] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.815731] CR2: 00007fe9c34bb000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   25.816096] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.816461] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.816826] PKRU: 55555554
[   25.816975] Call Trace:
[   25.817117]  <TASK>
[   25.817233] ? __warn (kernel/panic.c:677) 
[   25.817414] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.817629] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   25.817829] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   25.818019] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   25.818229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   25.818457] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   25.818675] br_dev_delete (net/bridge/br_if.c:396) 
[   25.818871] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   25.819110] cleanup_net (net/core/net_namespace.c:630) 
[   25.819303] ? process_one_work (kernel/workqueue.c:2606) 
[   25.819530] process_one_work (kernel/workqueue.c:2633) 
[   25.819740] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   25.819951] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   25.820182] kthread (kernel/kthread.c:388) 
[   25.820351] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.820551] ret_from_fork (arch/x86/kernel/process.c:147) 
[   25.820741] ? __pfx_kthread (kernel/kthread.c:341) 
[   25.820949] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   33.412135] ------------[ cut here ]------------
| [   33.412627] sysfs group 'bridge' not found for kobject 'br0'
| [   33.413072] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   33.413836] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   33.415211] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.416269] Workqueue: netns cleanup_net
[   33.416634] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 33.417030] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   33.418028] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   33.418324] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   33.418689] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   33.419061] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   33.419559] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3834610
[   33.420073] R13: ffffae1e40063e08 R14: ffff9bbec3834b80 R15: ffff9bbec3960050
[   33.420625] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[   33.421358] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.421952] CR2: 00007ffc097f3738 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   33.422682] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.423381] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.424035] PKRU: 55555554
[   33.424300] Call Trace:
[   33.424559]  <TASK>
[   33.424787] ? __warn (kernel/panic.c:677) 
[   33.425121] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.425538] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   33.425891] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   33.426262] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   33.426603] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   33.426998] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.427387] br_dev_delete (net/bridge/br_if.c:396) 
[   33.427731] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   33.428125] cleanup_net (net/core/net_namespace.c:630) 
[   33.428465] ? process_one_work (kernel/workqueue.c:2606) 
[   33.428787] process_one_work (kernel/workqueue.c:2633) 
[   33.429010] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   33.429244] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   33.429556] kthread (kernel/kthread.c:388) 
[   33.429745] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.430092] ret_from_fork (arch/x86/kernel/process.c:147) 
[   33.430286] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.430510] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   33.566066] ------------[ cut here ]------------
| [   33.566334] sysfs group 'bridge' not found for kobject 'br0'
| [   33.566645] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   33.567079] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   33.567839] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.568420] Workqueue: netns cleanup_net
[   33.568637] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 33.568885] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   33.569832] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   33.570108] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   33.570486] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   33.570847] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   33.571240] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5282610
[   33.571614] R13: ffffae1e40063e08 R14: ffff9bbec5282b80 R15: ffffffff9b278f90
[   33.571982] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[   33.572400] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.572694] CR2: 00007ffc097f3738 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   33.573061] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.573545] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.573924] PKRU: 55555554
[   33.574072] Call Trace:
[   33.574207]  <TASK>
[   33.574327] ? __warn (kernel/panic.c:677) 
[   33.574510] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.574731] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   33.574957] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   33.575146] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   33.575362] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   33.575596] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.575816] br_dev_delete (net/bridge/br_if.c:396) 
[   33.576014] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   33.576258] cleanup_net (net/core/net_namespace.c:630) 
[   33.576451] ? process_one_work (kernel/workqueue.c:2606) 
[   33.576677] process_one_work (kernel/workqueue.c:2633) 
[   33.576892] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   33.577107] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   33.577340] kthread (kernel/kthread.c:388) 
[   33.577511] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.577718] ret_from_fork (arch/x86/kernel/process.c:147) 
[   33.577918] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.578127] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   33.580724] ------------[ cut here ]------------
| [   33.581123] sysfs group 'bridge' not found for kobject 'br0'
| [   33.581580] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   33.582189] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   33.583305] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.584168] Workqueue: netns cleanup_net
[   33.584474] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 33.584841] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   33.586230] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   33.586632] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   33.587181] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   33.587724] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   33.588285] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5284610
[   33.588832] R13: ffffae1e40063e08 R14: ffff9bbec5284b80 R15: ffffffff9b278f90
[   33.589381] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[   33.589998] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.590435] CR2: 00007f05b5f5c400 CR3: 0000000002850003 CR4: 0000000000770ef0
[   33.590982] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.591522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.592066] PKRU: 55555554
[   33.592282] Call Trace:
[   33.592476]  <TASK>
[   33.592651] ? __warn (kernel/panic.c:677) 
[   33.592921] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.593250] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   33.593548] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   33.593816] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   33.594120] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   33.594456] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.594786] br_dev_delete (net/bridge/br_if.c:396) 
[   33.595082] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   33.595429] cleanup_net (net/core/net_namespace.c:630) 
[   33.595715] ? process_one_work (kernel/workqueue.c:2606) 
[   33.596048] process_one_work (kernel/workqueue.c:2633) 
[   33.596366] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   33.596662] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   33.597005] kthread (kernel/kthread.c:388) 
[   33.597258] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.597553] ret_from_fork (arch/x86/kernel/process.c:147) 
[   33.597837] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.598140] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   33.601900] ------------[ cut here ]------------
| [   33.602207] sysfs group 'bridge' not found for kobject 'br0'
| [   33.602504] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   33.602940] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   33.603713] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.604391] Workqueue: netns cleanup_net
[   33.604601] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 33.604849] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   33.605766] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   33.606034] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   33.606387] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   33.606764] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   33.607120] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf2610
[   33.607470] R13: ffffae1e40063e08 R14: ffff9bbec3bf2b80 R15: ffffffff9b278f90
[   33.607954] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[   33.608560] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.609003] CR2: 00007f05b5f5c400 CR3: 0000000002850003 CR4: 0000000000770ef0
[   33.609543] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.610090] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.610628] PKRU: 55555554
[   33.610843] Call Trace:
[   33.611046]  <TASK>
[   33.611202] ? __warn (kernel/panic.c:677) 
[   33.611371] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.611582] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   33.611803] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   33.611995] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   33.612194] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   33.612412] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   33.612631] br_dev_delete (net/bridge/br_if.c:396) 
[   33.612817] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   33.613050] cleanup_net (net/core/net_namespace.c:630) 
[   33.613237] ? process_one_work (kernel/workqueue.c:2606) 
[   33.613462] process_one_work (kernel/workqueue.c:2633) 
[   33.613669] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   33.613861] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   33.614085] kthread (kernel/kthread.c:388) 
[   33.614248] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.614441] ret_from_fork (arch/x86/kernel/process.c:147) 
[   33.614645] ? __pfx_kthread (kernel/kthread.c:341) 
[   33.614846] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   41.255186] ------------[ cut here ]------------
| [   41.255565] sysfs group 'bridge' not found for kobject 'br0'
| [   41.256059] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   41.256772] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   41.257803] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.258612] Workqueue: netns cleanup_net
[   41.258887] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 41.259181] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   41.260621] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   41.261082] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   41.261670] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   41.262279] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   41.262870] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf0610
[   41.263502] R13: ffffae1e40063e08 R14: ffff9bbec3bf0b80 R15: ffff9bbec3962e50
[   41.264134] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   41.264807] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.265304] CR2: 00007f9d953300e0 CR3: 0000000002802004 CR4: 0000000000770ef0
[   41.265897] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   41.266458] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   41.267044] PKRU: 55555554
[   41.267234] Call Trace:
[   41.267436]  <TASK>
[   41.267631] ? __warn (kernel/panic.c:677) 
[   41.267875] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.268230] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   41.268495] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   41.268797] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   41.269052] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   41.269414] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.269731] br_dev_delete (net/bridge/br_if.c:396) 
[   41.270044] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   41.270311] cleanup_net (net/core/net_namespace.c:630) 
[   41.270503] ? process_one_work (kernel/workqueue.c:2606) 
[   41.270732] process_one_work (kernel/workqueue.c:2633) 
[   41.270949] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   41.271170] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   41.271394] kthread (kernel/kthread.c:388) 
[   41.271563] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.271760] ret_from_fork (arch/x86/kernel/process.c:147) 
[   41.271965] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.272159] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   41.399071] ------------[ cut here ]------------
| [   41.399353] sysfs group 'bridge' not found for kobject 'br0'
| [   41.399687] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   41.400120] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   41.400875] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.401498] Workqueue: netns cleanup_net
[   41.401742] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 41.402015] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   41.402979] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   41.403287] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   41.403684] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   41.404065] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   41.404434] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf2610
[   41.404823] R13: ffffae1e40063e08 R14: ffff9bbec3bf2b80 R15: ffffffff9b278f90
[   41.405215] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   41.405642] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.405950] CR2: 0000555b8ad16dec CR3: 000000003ce60002 CR4: 0000000000770ef0
[   41.406338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   41.406721] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   41.407105] PKRU: 55555554
[   41.407260] Call Trace:
[   41.407424]  <TASK>
[   41.407568] ? __warn (kernel/panic.c:677) 
[   41.407764] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.408002] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   41.408221] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   41.408433] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   41.408655] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   41.408887] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.409135] br_dev_delete (net/bridge/br_if.c:396) 
[   41.409357] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   41.409611] cleanup_net (net/core/net_namespace.c:630) 
[   41.409812] ? process_one_work (kernel/workqueue.c:2606) 
[   41.410060] process_one_work (kernel/workqueue.c:2633) 
[   41.410300] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   41.410522] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   41.410754] kthread (kernel/kthread.c:388) 
[   41.410952] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.411187] ret_from_fork (arch/x86/kernel/process.c:147) 
[   41.411400] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.411607] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   41.414297] ------------[ cut here ]------------
| [   41.414567] sysfs group 'bridge' not found for kobject 'br0'
| [   41.414874] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   41.415610] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   41.417087] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.418213] Workqueue: netns cleanup_net
[   41.418587] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 41.419003] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   41.420558] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   41.421060] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   41.421642] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   41.422242] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   41.422625] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3836610
[   41.423034] R13: ffffae1e40063e08 R14: ffff9bbec3836b80 R15: ffffffff9b278f90
[   41.423626] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[   41.424063] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.424509] CR2: 00007f115292c270 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   41.424966] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   41.425514] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   41.426097] PKRU: 55555554
[   41.426361] Call Trace:
[   41.426615]  <TASK>
[   41.426815] ? __warn (kernel/panic.c:677) 
[   41.427110] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.427474] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   41.427826] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   41.428128] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   41.428488] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   41.428886] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.429262] br_dev_delete (net/bridge/br_if.c:396) 
[   41.429585] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   41.429997] cleanup_net (net/core/net_namespace.c:630) 
[   41.430329] ? process_one_work (kernel/workqueue.c:2606) 
[   41.430738] process_one_work (kernel/workqueue.c:2633) 
[   41.431110] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   41.431429] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   41.431834] kthread (kernel/kthread.c:388) 
[   41.432116] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.432505] ret_from_fork (arch/x86/kernel/process.c:147) 
[   41.432830] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.433200] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   41.436769] ------------[ cut here ]------------
| [   41.437032] sysfs group 'bridge' not found for kobject 'br0'
| [   41.437338] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   41.437748] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   41.438507] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.439086] Workqueue: netns cleanup_net
[   41.439294] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 41.439540] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   41.440470] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   41.440737] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   41.441104] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   41.441466] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   41.441828] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a2610
[   41.442194] R13: ffffae1e40063e08 R14: ffff9bbec52a2b80 R15: ffffffff9b278f90
[   41.442556] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   41.442971] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.443267] CR2: 00007f115262a000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[   41.443640] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   41.444005] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   41.444365] PKRU: 55555554
[   41.444510] Call Trace:
[   41.444643]  <TASK>
[   41.444760] ? __warn (kernel/panic.c:677) 
[   41.444936] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.445157] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   41.445352] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   41.445538] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   41.445739] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   41.445968] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   41.446198] br_dev_delete (net/bridge/br_if.c:396) 
[   41.446389] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   41.446621] cleanup_net (net/core/net_namespace.c:630) 
[   41.446816] ? process_one_work (kernel/workqueue.c:2606) 
[   41.447038] process_one_work (kernel/workqueue.c:2633) 
[   41.447253] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   41.447452] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   41.447674] kthread (kernel/kthread.c:388) 
[   41.447844] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.448045] ret_from_fork (arch/x86/kernel/process.c:147) 
[   41.448235] ? __pfx_kthread (kernel/kthread.c:341) 
[   41.448430] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   49.195112] ------------[ cut here ]------------
| [   49.195374] sysfs group 'bridge' not found for kobject 'br0'
| [   49.195717] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   49.196165] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   49.196963] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   49.197546] Workqueue: netns cleanup_net
[   49.197778] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 49.198078] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   49.199043] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   49.199328] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   49.199718] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   49.200112] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   49.200503] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a4610
[   49.200888] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec3965c50
[   49.201269] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   49.201699] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.202025] CR2: 0000555b8c698260 CR3: 00000000026cc004 CR4: 0000000000770ef0
[   49.202435] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   49.202812] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   49.203192] PKRU: 55555554
[   49.203379] Call Trace:
[   49.203544]  <TASK>
[   49.203690] ? __warn (kernel/panic.c:677) 
[   49.203881] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.204117] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   49.204340] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   49.204552] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   49.204795] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   49.205051] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.205285] br_dev_delete (net/bridge/br_if.c:396) 
[   49.205522] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   49.205775] cleanup_net (net/core/net_namespace.c:630) 
[   49.206001] ? process_one_work (kernel/workqueue.c:2606) 
[   49.206245] process_one_work (kernel/workqueue.c:2633) 
[   49.206466] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   49.206686] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   49.206941] kthread (kernel/kthread.c:388) 
[   49.207154] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.207371] ret_from_fork (arch/x86/kernel/process.c:147) 
[   49.207579] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.207808] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   49.299093] ------------[ cut here ]------------
| [   49.299365] sysfs group 'bridge' not found for kobject 'br0'
| [   49.299703] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   49.300144] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   49.300952] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   49.301557] Workqueue: netns cleanup_net
[   49.301791] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 49.302057] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   49.303026] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   49.303340] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   49.303742] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   49.304125] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   49.304517] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b5c610
[   49.304922] R13: ffffae1e40063e08 R14: ffff9bbec3b5cb80 R15: ffff9bbec2bf4550
[   49.305319] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   49.305740] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.306069] CR2: 00007ffc097f3768 CR3: 00000000026cc004 CR4: 0000000000770ef0
[   49.306468] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   49.306849] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   49.307229] PKRU: 55555554
[   49.307401] Call Trace:
[   49.307573]  <TASK>
[   49.307715] ? __warn (kernel/panic.c:677) 
[   49.307908] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.308161] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   49.308396] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   49.308606] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   49.308819] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   49.309071] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.309325] br_dev_delete (net/bridge/br_if.c:396) 
[   49.309539] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   49.309782] cleanup_net (net/core/net_namespace.c:630) 
[   49.310008] ? process_one_work (kernel/workqueue.c:2606) 
[   49.310262] process_one_work (kernel/workqueue.c:2633) 
[   49.310502] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   49.310710] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   49.310963] kthread (kernel/kthread.c:388) 
[   49.311160] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.311398] ret_from_fork (arch/x86/kernel/process.c:147) 
[   49.311603] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.311829] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   49.314545] ------------[ cut here ]------------
| [   49.314826] sysfs group 'bridge' not found for kobject 'br0'
| [   49.315156] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   49.315575] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   49.316395] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   49.316997] Workqueue: netns cleanup_net
[   49.317218] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 49.317491] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   49.318463] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   49.318759] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   49.319139] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   49.319529] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   49.319928] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b24610
[   49.320319] R13: ffffae1e40063e08 R14: ffff9bbec3b24b80 R15: ffff9bbec2bf4550
[   49.320694] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   49.321130] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.321471] CR2: 00007ffc097f3768 CR3: 00000000026cc004 CR4: 0000000000770ef0
[   49.321857] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   49.322238] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   49.322628] PKRU: 55555554
[   49.322805] Call Trace:
[   49.322962]  <TASK>
[   49.323092] ? __warn (kernel/panic.c:677) 
[   49.323308] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.323558] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   49.323776] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   49.323979] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   49.324219] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   49.324474] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.324716] br_dev_delete (net/bridge/br_if.c:396) 
[   49.324927] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   49.325182] cleanup_net (net/core/net_namespace.c:630) 
[   49.325404] ? process_one_work (kernel/workqueue.c:2606) 
[   49.325646] process_one_work (kernel/workqueue.c:2633) 
[   49.325879] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   49.326121] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   49.326373] kthread (kernel/kthread.c:388) 
[   49.326567] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.326773] ret_from_fork (arch/x86/kernel/process.c:147) 
[   49.327006] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.327239] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   49.444097] ------------[ cut here ]------------
| [   49.444369] sysfs group 'bridge' not found for kobject 'br0'
| [   49.444690] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   49.445130] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   49.445928] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   49.446511] Workqueue: netns cleanup_net
[   49.446737] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 49.447032] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   49.447994] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   49.448281] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   49.448666] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   49.449076] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   49.449463] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b5a610
[   49.449838] R13: ffffae1e40063e08 R14: ffff9bbec3b5ab80 R15: ffff9bbec5012e50
[   49.450230] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   49.450677] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.451007] CR2: 00007ffc097f17c8 CR3: 00000000026cc004 CR4: 0000000000770ef0
[   49.451380] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   49.451779] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   49.452183] PKRU: 55555554
[   49.452356] Call Trace:
[   49.452501]  <TASK>
[   49.452642] ? __warn (kernel/panic.c:677) 
[   49.452852] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.453097] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   49.453318] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   49.453537] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   49.453779] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   49.454035] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   49.454266] br_dev_delete (net/bridge/br_if.c:396) 
[   49.454484] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   49.454745] cleanup_net (net/core/net_namespace.c:630) 
[   49.454970] ? process_one_work (kernel/workqueue.c:2606) 
[   49.455198] process_one_work (kernel/workqueue.c:2633) 
[   49.455437] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   49.455666] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   49.455925] kthread (kernel/kthread.c:388) 
[   49.456106] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.456324] ret_from_fork (arch/x86/kernel/process.c:147) 
[   49.456545] ? __pfx_kthread (kernel/kthread.c:341) 
[   49.456775] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   57.260106] ------------[ cut here ]------------
| [   57.260374] sysfs group 'bridge' not found for kobject 'br0'
| [   57.260710] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   57.261167] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   57.261981] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   57.262569] Workqueue: netns cleanup_net
[   57.262809] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 57.263099] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   57.264104] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   57.264383] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   57.264775] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   57.265174] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   57.265561] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233e610
[   57.265941] R13: ffffae1e40063e08 R14: ffff9bbec233eb80 R15: ffff9bbec2bf4550
[   57.266337] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   57.266780] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   57.267104] CR2: 0000555b8c6b95f0 CR3: 00000000026cc004 CR4: 0000000000770ef0
[   57.267480] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   57.267877] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   57.268277] PKRU: 55555554
[   57.268446] Call Trace:
[   57.268588]  <TASK>
[   57.268735] ? __warn (kernel/panic.c:677) 
[   57.268948] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.269195] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   57.269402] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   57.269618] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   57.269872] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   57.270128] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.270358] br_dev_delete (net/bridge/br_if.c:396) 
[   57.270577] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   57.270847] cleanup_net (net/core/net_namespace.c:630) 
[   57.271069] ? process_one_work (kernel/workqueue.c:2606) 
[   57.271300] process_one_work (kernel/workqueue.c:2633) 
[   57.271539] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   57.271785] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   57.272047] kthread (kernel/kthread.c:388) 
[   57.272233] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.272460] ret_from_fork (arch/x86/kernel/process.c:147) 
[   57.272688] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.272916] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   57.351174] ------------[ cut here ]------------
| [   57.351805] sysfs group 'bridge' not found for kobject 'br0'
| [   57.352591] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   57.353622] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   57.355062] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   57.356187] Workqueue: netns cleanup_net
[   57.356553] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 57.357117] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   57.359614] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   57.360363] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   57.361342] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   57.362354] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   57.363349] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b24610
[   57.364252] R13: ffffae1e40063e08 R14: ffff9bbec3b24b80 R15: ffff9bbec2bf5c50
[   57.365141] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[   57.366198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   57.366915] CR2: 00007f807a427000 CR3: 0000000002802006 CR4: 0000000000770ef0
[   57.367694] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   57.368292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   57.368830] PKRU: 55555554
[   57.369054] Call Trace:
[   57.369251]  <TASK>
[   57.369425] ? __warn (kernel/panic.c:677) 
[   57.369686] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.370015] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   57.370314] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   57.370593] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   57.370912] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   57.371253] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.371588] br_dev_delete (net/bridge/br_if.c:396) 
[   57.371882] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   57.372242] cleanup_net (net/core/net_namespace.c:630) 
[   57.372534] ? process_one_work (kernel/workqueue.c:2606) 
[   57.372861] process_one_work (kernel/workqueue.c:2633) 
[   57.373191] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   57.373501] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   57.373839] kthread (kernel/kthread.c:388) 
[   57.374105] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.374404] ret_from_fork (arch/x86/kernel/process.c:147) 
[   57.374692] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.375002] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   57.474081] ------------[ cut here ]------------
| [   57.474337] sysfs group 'bridge' not found for kobject 'br0'
| [   57.474653] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   57.475080] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   57.475830] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   57.476415] Workqueue: netns cleanup_net
[   57.476629] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 57.476877] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   57.477841] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   57.478118] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   57.478483] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   57.478860] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   57.479226] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5280610
[   57.479596] R13: ffffae1e40063e08 R14: ffff9bbec5280b80 R15: ffffffff9b278f90
[   57.479962] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   57.480375] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   57.480668] CR2: 0000555b8ad16dec CR3: 00000000026cc004 CR4: 0000000000770ef0
[   57.481036] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   57.481395] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   57.481761] PKRU: 55555554
[   57.481912] Call Trace:
[   57.482053]  <TASK>
[   57.482171] ? __warn (kernel/panic.c:677) 
[   57.482342] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.482560] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   57.482758] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   57.482963] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   57.483170] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   57.483445] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.483663] br_dev_delete (net/bridge/br_if.c:396) 
[   57.483855] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   57.484093] cleanup_net (net/core/net_namespace.c:630) 
[   57.484295] ? process_one_work (kernel/workqueue.c:2606) 
[   57.484512] process_one_work (kernel/workqueue.c:2633) 
[   57.484731] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   57.484943] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   57.485170] kthread (kernel/kthread.c:388) 
[   57.485345] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.485547] ret_from_fork (arch/x86/kernel/process.c:147) 
[   57.485742] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.485946] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   57.488496] ------------[ cut here ]------------
| [   57.488747] sysfs group 'bridge' not found for kobject 'br0'
| [   57.489056] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   57.489466] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   57.490216] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   57.490797] Workqueue: netns cleanup_net
[   57.491006] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 57.491257] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   57.492181] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   57.492461] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   57.492827] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   57.493190] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   57.493568] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b22610
[   57.493940] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffffffff9b278f90
[   57.494308] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   57.494725] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   57.495034] CR2: 0000555b8ad16dec CR3: 00000000026cc004 CR4: 0000000000770ef0
[   57.495399] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   57.495781] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   57.496156] PKRU: 55555554
[   57.496308] Call Trace:
[   57.496439]  <TASK>
[   57.496565] ? __warn (kernel/panic.c:677) 
[   57.496745] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.496978] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   57.497177] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   57.497370] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   57.497579] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   57.497798] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   57.498028] br_dev_delete (net/bridge/br_if.c:396) 
[   57.498221] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   57.498454] cleanup_net (net/core/net_namespace.c:630) 
[   57.498648] ? process_one_work (kernel/workqueue.c:2606) 
[   57.498866] process_one_work (kernel/workqueue.c:2633) 
[   57.499082] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   57.499279] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   57.499503] kthread (kernel/kthread.c:388) 
[   57.499671] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.499924] ret_from_fork (arch/x86/kernel/process.c:147) 
[   57.500209] ? __pfx_kthread (kernel/kthread.c:341) 
[   57.500470] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   65.544320] ------------[ cut here ]------------
| [   65.544703] sysfs group 'bridge' not found for kobject 'br0'
| [   65.545187] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   65.545871] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   65.547074] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   65.548004] Workqueue: netns cleanup_net
[   65.548373] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 65.548793] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   65.550233] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   65.550700] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   65.551324] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   65.551920] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   65.552496] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf4610
[   65.553107] R13: ffffae1e40063e08 R14: ffff9bbec3bf4b80 R15: ffff9bbec5012e50
[   65.553715] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   65.554384] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.554854] CR2: 00007f3d2b442270 CR3: 0000000003920004 CR4: 0000000000770ef0
[   65.555456] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   65.556069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   65.556661] PKRU: 55555554
[   65.556920] Call Trace:
[   65.557164]  <TASK>
[   65.557384] ? __warn (kernel/panic.c:677) 
[   65.557678] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.558047] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   65.558394] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   65.558728] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   65.559085] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   65.559446] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.559812] br_dev_delete (net/bridge/br_if.c:396) 
[   65.560154] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   65.560532] cleanup_net (net/core/net_namespace.c:630) 
[   65.560844] ? process_one_work (kernel/workqueue.c:2606) 
[   65.561220] process_one_work (kernel/workqueue.c:2633) 
[   65.561591] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   65.561929] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   65.562282] kthread (kernel/kthread.c:388) 
[   65.562582] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.562931] ret_from_fork (arch/x86/kernel/process.c:147) 
[   65.563263] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.563585] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   65.670073] ------------[ cut here ]------------
| [   65.670571] sysfs group 'bridge' not found for kobject 'br0'
| [   65.670958] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   65.671425] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   65.672208] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   65.672783] Workqueue: netns cleanup_net
[   65.673026] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 65.673283] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   65.674238] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   65.674507] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   65.674867] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   65.675261] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   65.675622] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39bc610
[   65.675994] R13: ffffae1e40063e08 R14: ffff9bbec39bcb80 R15: ffff9bbec3965c50
[   65.676384] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[   65.676788] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.677088] CR2: 00007fa680528000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[   65.677474] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   65.677832] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   65.678195] PKRU: 55555554
[   65.678339] Call Trace:
[   65.678498]  <TASK>
[   65.678616] ? __warn (kernel/panic.c:677) 
[   65.678789] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.679011] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   65.679205] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   65.679388] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   65.679617] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   65.679838] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.680067] br_dev_delete (net/bridge/br_if.c:396) 
[   65.680260] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   65.680489] cleanup_net (net/core/net_namespace.c:630) 
[   65.680712] ? process_one_work (kernel/workqueue.c:2606) 
[   65.680937] process_one_work (kernel/workqueue.c:2633) 
[   65.681148] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   65.681344] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   65.681566] kthread (kernel/kthread.c:388) 
[   65.681733] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.681965] ret_from_fork (arch/x86/kernel/process.c:147) 
[   65.682155] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.682350] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   65.684940] ------------[ cut here ]------------
| [   65.685254] sysfs group 'bridge' not found for kobject 'br0'
| [   65.685771] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   65.686221] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   65.687084] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   65.688204] Workqueue: netns cleanup_net
[   65.688554] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 65.688980] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   65.690442] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   65.690995] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   65.691769] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   65.692576] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   65.693326] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a2610
[   65.694127] R13: ffffae1e40063e08 R14: ffff9bbec52a2b80 R15: ffff9bbec3965c50
[   65.694887] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[   65.695746] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.696315] CR2: 00007fa680528000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[   65.697090] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   65.697858] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   65.698557] PKRU: 55555554
[   65.698711] Call Trace:
[   65.698845]  <TASK>
[   65.699018] ? __warn (kernel/panic.c:677) 
[   65.699215] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.699435] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   65.699634] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   65.699849] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   65.700057] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   65.700395] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.700792] br_dev_delete (net/bridge/br_if.c:396) 
[   65.701109] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   65.701340] cleanup_net (net/core/net_namespace.c:630) 
[   65.701668] ? process_one_work (kernel/workqueue.c:2606) 
[   65.702048] process_one_work (kernel/workqueue.c:2633) 
[   65.702425] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   65.702793] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   65.703276] kthread (kernel/kthread.c:388) 
[   65.703576] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.703939] ret_from_fork (arch/x86/kernel/process.c:147) 
[   65.704298] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.704676] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   65.834083] ------------[ cut here ]------------
| [   65.834387] sysfs group 'bridge' not found for kobject 'br0'
| [   65.834867] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   65.835654] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   65.837073] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   65.838158] Workqueue: netns cleanup_net
[   65.838561] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 65.839050] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   65.840825] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   65.841363] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   65.842055] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   65.842730] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   65.843401] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3832610
[   65.844078] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffff9bbec3964550
[   65.844784] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   65.845540] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.846089] CR2: 00007f3448019000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[   65.846716] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   65.847404] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   65.848019] PKRU: 55555554
[   65.848164] Call Trace:
[   65.848335]  <TASK>
[   65.848458] ? __warn (kernel/panic.c:677) 
[   65.848746] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.848973] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   65.849168] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   65.849354] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   65.849555] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   65.849782] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   65.850012] br_dev_delete (net/bridge/br_if.c:396) 
[   65.850204] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   65.850434] cleanup_net (net/core/net_namespace.c:630) 
[   65.850627] ? process_one_work (kernel/workqueue.c:2606) 
[   65.850844] process_one_work (kernel/workqueue.c:2633) 
[   65.851064] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   65.851263] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   65.851487] kthread (kernel/kthread.c:388) 
[   65.851655] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.851851] ret_from_fork (arch/x86/kernel/process.c:147) 
[   65.852048] ? __pfx_kthread (kernel/kthread.c:341) 
[   65.852244] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   74.155094] ------------[ cut here ]------------
| [   74.155494] sysfs group 'bridge' not found for kobject 'br0'
| [   74.156008] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   74.156625] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   74.157488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   74.158169] Workqueue: netns cleanup_net
[   74.158531] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 74.158812] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   74.160044] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   74.160310] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   74.160919] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   74.161600] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   74.162252] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b26610
[   74.162920] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffff9bbec3be1750
[   74.163599] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   74.164369] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.164884] CR2: 0000555b8acc45a0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[   74.165551] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   74.166236] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   74.166872] PKRU: 55555554
[   74.167084] Call Trace:
[   74.167337]  <TASK>
[   74.167506] ? __warn (kernel/panic.c:677) 
[   74.167784] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.168163] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   74.168526] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   74.168815] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   74.169159] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   74.169515] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.169869] br_dev_delete (net/bridge/br_if.c:396) 
[   74.170183] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   74.170498] cleanup_net (net/core/net_namespace.c:630) 
[   74.170720] ? process_one_work (kernel/workqueue.c:2606) 
[   74.170968] process_one_work (kernel/workqueue.c:2633) 
[   74.171207] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   74.171406] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   74.171630] kthread (kernel/kthread.c:388) 
[   74.171827] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.172030] ret_from_fork (arch/x86/kernel/process.c:147) 
[   74.172221] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.172416] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   74.267073] ------------[ cut here ]------------
| [   74.267485] sysfs group 'bridge' not found for kobject 'br0'
| [   74.268010] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   74.268696] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   74.269986] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   74.270988] Workqueue: netns cleanup_net
[   74.271313] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 74.271725] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   74.273189] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   74.273648] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   74.274189] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   74.274794] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   74.275198] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf0610
[   74.275641] R13: ffffae1e40063e08 R14: ffff9bbec3bf0b80 R15: ffff9bbec3964550
[   74.276083] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   74.276593] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.276915] CR2: 0000555b8acc45a0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[   74.277274] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   74.277810] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   74.278394] PKRU: 55555554
[   74.278537] Call Trace:
[   74.278768]  <TASK>
[   74.278987] ? __warn (kernel/panic.c:677) 
[   74.279324] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.279757] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   74.280150] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   74.280480] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   74.280910] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   74.281371] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.281823] br_dev_delete (net/bridge/br_if.c:396) 
[   74.282198] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   74.282709] cleanup_net (net/core/net_namespace.c:630) 
[   74.283127] ? process_one_work (kernel/workqueue.c:2606) 
[   74.283572] process_one_work (kernel/workqueue.c:2633) 
[   74.283966] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   74.284357] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   74.284850] kthread (kernel/kthread.c:388) 
[   74.285186] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.285605] ret_from_fork (arch/x86/kernel/process.c:147) 
[   74.285987] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.286370] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   74.290796] ------------[ cut here ]------------
| [   74.291073] sysfs group 'bridge' not found for kobject 'br0'
| [   74.291460] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   74.292109] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   74.292910] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   74.293851] Workqueue: netns cleanup_net
[   74.294207] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 74.294491] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   74.295816] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   74.296221] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   74.296794] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   74.297432] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   74.298073] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2338610
[   74.298683] R13: ffffae1e40063e08 R14: ffff9bbec2338b80 R15: ffff9bbec3964550
[   74.299355] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   74.300036] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.300554] CR2: 0000555b8acc45a0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[   74.301173] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   74.301800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   74.302448] PKRU: 55555554
[   74.302708] Call Trace:
[   74.302944]  <TASK>
[   74.303154] ? __warn (kernel/panic.c:677) 
[   74.303440] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.303720] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   74.303924] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   74.304156] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   74.304376] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   74.304597] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.304846] br_dev_delete (net/bridge/br_if.c:396) 
[   74.305043] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   74.305315] cleanup_net (net/core/net_namespace.c:630) 
[   74.305557] ? process_one_work (kernel/workqueue.c:2606) 
[   74.306005] process_one_work (kernel/workqueue.c:2633) 
[   74.306265] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   74.306510] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   74.306879] kthread (kernel/kthread.c:388) 
[   74.307250] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.307613] ret_from_fork (arch/x86/kernel/process.c:147) 
[   74.307950] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.308377] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   74.428087] ------------[ cut here ]------------
| [   74.428512] sysfs group 'bridge' not found for kobject 'br0'
| [   74.428962] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   74.429639] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   74.430831] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   74.431712] Workqueue: netns cleanup_net
[   74.432071] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 74.432476] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   74.433592] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   74.433881] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   74.434425] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   74.434783] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   74.435282] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233e610
[   74.435877] R13: ffffae1e40063e08 R14: ffff9bbec233eb80 R15: ffff9bbec2bf2e50
[   74.436328] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   74.437075] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.437680] CR2: 0000555b8acc45a0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[   74.438346] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   74.439051] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   74.439756] PKRU: 55555554
[   74.440073] Call Trace:
[   74.440335]  <TASK>
[   74.440565] ? __warn (kernel/panic.c:677) 
[   74.440945] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.441390] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   74.441765] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   74.442190] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   74.442571] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   74.443041] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   74.443453] br_dev_delete (net/bridge/br_if.c:396) 
[   74.443811] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   74.444308] cleanup_net (net/core/net_namespace.c:630) 
[   74.444636] ? process_one_work (kernel/workqueue.c:2606) 
[   74.445044] process_one_work (kernel/workqueue.c:2633) 
[   74.445423] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   74.445791] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   74.446175] kthread (kernel/kthread.c:388) 
[   74.446525] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.446854] ret_from_fork (arch/x86/kernel/process.c:147) 
[   74.447232] ? __pfx_kthread (kernel/kthread.c:341) 
[   74.447605] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   82.704208] ------------[ cut here ]------------
| [   82.704734] sysfs group 'bridge' not found for kobject 'br0'
| [   82.705427] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   82.706370] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   82.708046] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   82.709330] Workqueue: netns cleanup_net
[   82.709783] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 82.710270] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   82.712127] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   82.712678] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   82.713393] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   82.714080] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   82.714471] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39be610
[   82.715031] R13: ffffae1e40063e08 R14: ffff9bbec39beb80 R15: ffff9bbec3965c50
[   82.715538] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[   82.716099] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.716397] CR2: 00007fe7e2312000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[   82.716947] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   82.717544] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   82.718105] PKRU: 55555554
[   82.718354] Call Trace:
[   82.718639]  <TASK>
[   82.718896] ? __warn (kernel/panic.c:677) 
[   82.719277] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.719754] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   82.720199] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   82.720610] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   82.721047] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   82.721543] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.721998] br_dev_delete (net/bridge/br_if.c:396) 
[   82.722409] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   82.722914] cleanup_net (net/core/net_namespace.c:630) 
[   82.723319] ? process_one_work (kernel/workqueue.c:2606) 
[   82.723821] process_one_work (kernel/workqueue.c:2633) 
[   82.724286] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   82.724724] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   82.725223] kthread (kernel/kthread.c:388) 
[   82.725579] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.725927] ret_from_fork (arch/x86/kernel/process.c:147) 
[   82.726295] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.726722] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   82.867079] ------------[ cut here ]------------
| [   82.867515] sysfs group 'bridge' not found for kobject 'br0'
| [   82.868011] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   82.868725] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   82.869980] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   82.870909] Workqueue: netns cleanup_net
[   82.871213] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 82.871619] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   82.873043] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   82.873473] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   82.874048] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   82.874456] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   82.874877] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5280610
[   82.875388] R13: ffffae1e40063e08 R14: ffff9bbec5280b80 R15: ffffffff9b278f90
[   82.875759] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   82.876174] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.876586] CR2: 00007fead2846000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   82.877101] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   82.877463] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   82.877977] PKRU: 55555554
[   82.878210] Call Trace:
[   82.878418]  <TASK>
[   82.878601] ? __warn (kernel/panic.c:677) 
[   82.878871] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.879239] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   82.879550] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   82.879834] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   82.880152] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   82.880488] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.880836] br_dev_delete (net/bridge/br_if.c:396) 
[   82.881152] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   82.881528] cleanup_net (net/core/net_namespace.c:630) 
[   82.881830] ? process_one_work (kernel/workqueue.c:2606) 
[   82.882170] process_one_work (kernel/workqueue.c:2633) 
[   82.882518] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   82.882949] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   82.883518] kthread (kernel/kthread.c:388) 
[   82.883942] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.884429] ret_from_fork (arch/x86/kernel/process.c:147) 
[   82.884883] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.885299] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   82.890424] ------------[ cut here ]------------
| [   82.890784] sysfs group 'bridge' not found for kobject 'br0'
| [   82.891262] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   82.891889] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   82.893044] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   82.893638] Workqueue: netns cleanup_net
[   82.893845] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 82.894098] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   82.895033] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   82.895302] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   82.895661] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   82.896026] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   82.896386] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf2610
[   82.896746] R13: ffffae1e40063e08 R14: ffff9bbec3bf2b80 R15: ffffffff9b278f90
[   82.897111] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   82.897519] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.897813] CR2: 00007fead2846000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   82.898181] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   82.898541] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   82.898900] PKRU: 55555554
[   82.899054] Call Trace:
[   82.899186]  <TASK>
[   82.899303] ? __warn (kernel/panic.c:677) 
[   82.899475] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.899693] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   82.899888] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   82.900079] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   82.900280] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   82.900502] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.900719] br_dev_delete (net/bridge/br_if.c:396) 
[   82.900916] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   82.901147] cleanup_net (net/core/net_namespace.c:630) 
[   82.901338] ? process_one_work (kernel/workqueue.c:2606) 
[   82.901554] process_one_work (kernel/workqueue.c:2633) 
[   82.901767] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   82.901971] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   82.902193] kthread (kernel/kthread.c:388) 
[   82.902362] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.902559] ret_from_fork (arch/x86/kernel/process.c:147) 
[   82.902748] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.902950] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   82.905489] ------------[ cut here ]------------
| [   82.905727] sysfs group 'bridge' not found for kobject 'br0'
| [   82.906036] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   82.906442] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   82.907181] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   82.907752] Workqueue: netns cleanup_net
[   82.907964] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 82.908212] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   82.909137] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   82.909407] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   82.909765] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   82.910130] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   82.910490] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a6610
[   82.910850] R13: ffffae1e40063e08 R14: ffff9bbec52a6b80 R15: ffffffff9b278f90
[   82.911219] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[   82.911625] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.911924] CR2: 00007fead2846000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[   82.912286] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   82.912650] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   82.913014] PKRU: 55555554
[   82.913170] Call Trace:
[   82.913302]  <TASK>
[   82.913418] ? __warn (kernel/panic.c:677) 
[   82.913588] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.913806] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   82.914004] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   82.914189] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   82.914389] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   82.914612] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   82.914828] br_dev_delete (net/bridge/br_if.c:396) 
[   82.915023] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   82.915252] cleanup_net (net/core/net_namespace.c:630) 
[   82.915443] ? process_one_work (kernel/workqueue.c:2606) 
[   82.915658] process_one_work (kernel/workqueue.c:2633) 
[   82.915871] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   82.916076] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   82.916298] kthread (kernel/kthread.c:388) 
[   82.916465] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.916662] ret_from_fork (arch/x86/kernel/process.c:147) 
[   82.916849] ? __pfx_kthread (kernel/kthread.c:341) 
[   82.917053] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   91.536185] ------------[ cut here ]------------
| [   91.536444] sysfs group 'bridge' not found for kobject 'br0'
| [   91.536750] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   91.537248] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   91.538046] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   91.538662] Workqueue: netns cleanup_net
[   91.538869] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 91.539158] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   91.540177] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   91.540506] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   91.540916] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   91.541332] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   91.541726] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf4610
[   91.542134] R13: ffffae1e40063e08 R14: ffff9bbec3bf4b80 R15: ffff9bbec3965c50
[   91.542528] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   91.542975] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   91.543291] CR2: 00007f38d2e43270 CR3: 0000000002ae2005 CR4: 0000000000770ef0
[   91.543684] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   91.544083] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   91.544471] PKRU: 55555554
[   91.544660] Call Trace:
[   91.544817]  <TASK>
[   91.544965] ? __warn (kernel/panic.c:677) 
[   91.545171] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.545431] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   91.545665] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   91.545891] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   91.546102] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   91.546347] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.546565] br_dev_delete (net/bridge/br_if.c:396) 
[   91.546805] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   91.547128] cleanup_net (net/core/net_namespace.c:630) 
[   91.547345] ? process_one_work (kernel/workqueue.c:2606) 
[   91.547588] process_one_work (kernel/workqueue.c:2633) 
[   91.547819] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   91.548081] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   91.548352] kthread (kernel/kthread.c:388) 
[   91.548568] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.548780] ret_from_fork (arch/x86/kernel/process.c:147) 
[   91.549009] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.549285] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   91.672118] ------------[ cut here ]------------
| [   91.672379] sysfs group 'bridge' not found for kobject 'br0'
| [   91.672702] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   91.673195] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   91.674034] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   91.674644] Workqueue: netns cleanup_net
[   91.674895] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 91.675218] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   91.676209] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   91.676516] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   91.676924] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   91.677345] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   91.677741] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39be610
[   91.678143] R13: ffffae1e40063e08 R14: ffff9bbec39beb80 R15: ffff9bbec5015c50
[   91.678540] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   91.679018] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   91.679360] CR2: 00007f38d2e43270 CR3: 000000003ce60006 CR4: 0000000000770ef0
[   91.679742] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   91.680157] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   91.680559] PKRU: 55555554
[   91.680736] Call Trace:
[   91.680895]  <TASK>
[   91.681072] ? __warn (kernel/panic.c:677) 
[   91.681293] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.681549] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   91.681769] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   91.682010] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   91.682263] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   91.682535] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.682771] br_dev_delete (net/bridge/br_if.c:396) 
[   91.682999] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   91.683309] cleanup_net (net/core/net_namespace.c:630) 
[   91.683535] ? process_one_work (kernel/workqueue.c:2606) 
[   91.683774] process_one_work (kernel/workqueue.c:2633) 
[   91.684041] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   91.684292] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   91.684547] kthread (kernel/kthread.c:388) 
[   91.684735] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.684977] ret_from_fork (arch/x86/kernel/process.c:147) 
[   91.685215] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.685445] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   91.688392] ------------[ cut here ]------------
| [   91.688655] sysfs group 'bridge' not found for kobject 'br0'
| [   91.689007] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   91.689472] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   91.690282] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   91.690916] Workqueue: netns cleanup_net
[   91.691173] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 91.691461] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   91.692431] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   91.692752] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   91.693206] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   91.693608] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   91.693998] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5286610
[   91.694404] R13: ffffae1e40063e08 R14: ffff9bbec5286b80 R15: ffff9bbec5015c50
[   91.694821] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   91.695277] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   91.695595] CR2: 00007f38d2e43270 CR3: 000000003ce60006 CR4: 0000000000770ef0
[   91.695997] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   91.696421] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   91.696826] PKRU: 55555554
[   91.696997] Call Trace:
[   91.697177]  <TASK>
[   91.697338] ? __warn (kernel/panic.c:677) 
[   91.697557] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.697799] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   91.698039] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   91.698298] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   91.698542] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   91.698796] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.699089] br_dev_delete (net/bridge/br_if.c:396) 
[   91.699330] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   91.699618] cleanup_net (net/core/net_namespace.c:630) 
[   91.699848] ? process_one_work (kernel/workqueue.c:2606) 
[   91.700113] process_one_work (kernel/workqueue.c:2633) 
[   91.700371] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   91.700601] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   91.700940] kthread (kernel/kthread.c:388) 
[   91.701141] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.701370] ret_from_fork (arch/x86/kernel/process.c:147) 
[   91.701600] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.701827] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [   91.842089] ------------[ cut here ]------------
| [   91.842408] sysfs group 'bridge' not found for kobject 'br0'
| [   91.842757] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [   91.843237] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[   91.844082] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   91.844722] Workqueue: netns cleanup_net
[   91.844977] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 91.845341] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[   91.846325] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[   91.846634] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[   91.847098] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   91.847492] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[   91.847898] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39bc610
[   91.848319] R13: ffffae1e40063e08 R14: ffff9bbec39bcb80 R15: ffff9bbec3961750
[   91.848695] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[   91.849170] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   91.849504] CR2: 00007f38d2e43270 CR3: 000000003ce60006 CR4: 0000000000770ef0
[   91.849955] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   91.850384] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   91.850782] PKRU: 55555554
[   91.850982] Call Trace:
[   91.851153]  <TASK>
[   91.851323] ? __warn (kernel/panic.c:677) 
[   91.851531] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.851766] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[   91.851995] ? handle_bug (arch/x86/kernel/traps.c:238) 
[   91.852243] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[   91.852503] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   91.852762] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[   91.853030] br_dev_delete (net/bridge/br_if.c:396) 
[   91.853253] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[   91.853555] cleanup_net (net/core/net_namespace.c:630) 
[   91.853798] ? process_one_work (kernel/workqueue.c:2606) 
[   91.854059] process_one_work (kernel/workqueue.c:2633) 
[   91.854314] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[   91.854564] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[   91.854810] kthread (kernel/kthread.c:388) 
[   91.855028] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.855263] ret_from_fork (arch/x86/kernel/process.c:147) 
[   91.855544] ? __pfx_kthread (kernel/kthread.c:341) 
[   91.855822] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  100.276190] ------------[ cut here ]------------
| [  100.276457] sysfs group 'bridge' not found for kobject 'br0'
| [  100.276803] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  100.277254] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  100.278125] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  100.278729] Workqueue: netns cleanup_net
[  100.278965] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 100.279249] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  100.280214] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  100.280510] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  100.280909] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  100.281322] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  100.281736] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf4610
[  100.282158] R13: ffffae1e40063e08 R14: ffff9bbec3bf4b80 R15: ffff9bbec2bf0050
[  100.282553] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  100.283034] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.283419] CR2: 00007fc4c40f4000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  100.283847] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  100.284260] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  100.284689] PKRU: 55555554
[  100.284881] Call Trace:
[  100.285060]  <TASK>
[  100.285195] ? __warn (kernel/panic.c:677) 
[  100.285401] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.285654] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  100.285880] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  100.286089] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  100.286328] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  100.286592] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.286842] br_dev_delete (net/bridge/br_if.c:396) 
[  100.287057] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  100.287324] cleanup_net (net/core/net_namespace.c:630) 
[  100.287558] ? process_one_work (kernel/workqueue.c:2606) 
[  100.287826] process_one_work (kernel/workqueue.c:2633) 
[  100.288067] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  100.288307] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  100.288568] kthread (kernel/kthread.c:388) 
[  100.288772] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.288995] ret_from_fork (arch/x86/kernel/process.c:147) 
[  100.289217] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.289452] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  100.415248] ------------[ cut here ]------------
| [  100.415536] sysfs group 'bridge' not found for kobject 'br0'
| [  100.415901] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  100.416426] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  100.417289] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  100.417928] Workqueue: netns cleanup_net
[  100.418180] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 100.418487] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  100.419472] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  100.419788] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  100.420226] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  100.420611] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  100.421065] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b24610
[  100.421506] R13: ffffae1e40063e08 R14: ffff9bbec3b24b80 R15: ffff9bbec3961750
[  100.421913] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  100.422388] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.422735] CR2: 00007fc4c40f4000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  100.423148] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  100.423540] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  100.423960] PKRU: 55555554
[  100.424207] Call Trace:
[  100.424403]  <TASK>
[  100.424536] ? __warn (kernel/panic.c:677) 
[  100.424745] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.425010] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  100.425259] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  100.425478] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  100.425715] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  100.425978] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.426230] br_dev_delete (net/bridge/br_if.c:396) 
[  100.426438] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  100.426689] cleanup_net (net/core/net_namespace.c:630) 
[  100.426928] ? process_one_work (kernel/workqueue.c:2606) 
[  100.427179] process_one_work (kernel/workqueue.c:2633) 
[  100.427409] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  100.427633] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  100.427889] kthread (kernel/kthread.c:388) 
[  100.428140] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.428361] ret_from_fork (arch/x86/kernel/process.c:147) 
[  100.428581] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.428830] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  100.431679] ------------[ cut here ]------------
| [  100.431946] sysfs group 'bridge' not found for kobject 'br0'
| [  100.432345] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  100.432783] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  100.433637] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  100.434239] Workqueue: netns cleanup_net
[  100.434479] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 100.434757] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  100.435723] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  100.436024] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  100.436420] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  100.436819] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  100.437238] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf0610
[  100.437611] R13: ffffae1e40063e08 R14: ffff9bbec3bf0b80 R15: ffff9bbec3961750
[  100.438008] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  100.438468] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.438792] CR2: 00007fc4c40f4000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  100.439187] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  100.439574] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  100.439994] PKRU: 55555554
[  100.440195] Call Trace:
[  100.440342]  <TASK>
[  100.440491] ? __warn (kernel/panic.c:677) 
[  100.440701] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.440950] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  100.441169] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  100.441380] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  100.441614] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  100.441860] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.442112] br_dev_delete (net/bridge/br_if.c:396) 
[  100.442327] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  100.442590] cleanup_net (net/core/net_namespace.c:630) 
[  100.442809] ? process_one_work (kernel/workqueue.c:2606) 
[  100.443077] process_one_work (kernel/workqueue.c:2633) 
[  100.443318] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  100.443551] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  100.443798] kthread (kernel/kthread.c:388) 
[  100.443990] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.444235] ret_from_fork (arch/x86/kernel/process.c:147) 
[  100.444457] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.444683] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  100.577201] ------------[ cut here ]------------
| [  100.577490] sysfs group 'bridge' not found for kobject 'br0'
| [  100.577815] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  100.578277] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  100.579123] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  100.579725] Workqueue: netns cleanup_net
[  100.579994] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 100.580294] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  100.581309] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  100.581612] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  100.582025] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  100.582440] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  100.582843] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5280610
[  100.583273] R13: ffffae1e40063e08 R14: ffff9bbec5280b80 R15: ffff9bbec2bf2e50
[  100.583689] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  100.584175] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.584518] CR2: 00007fc4c40f4000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  100.584924] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  100.585332] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  100.585747] PKRU: 55555554
[  100.585939] Call Trace:
[  100.586116]  <TASK>
[  100.586282] ? __warn (kernel/panic.c:677) 
[  100.586494] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.586766] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  100.587006] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  100.587230] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  100.587496] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  100.587750] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  100.587999] br_dev_delete (net/bridge/br_if.c:396) 
[  100.588228] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  100.588533] cleanup_net (net/core/net_namespace.c:630) 
[  100.588771] ? process_one_work (kernel/workqueue.c:2606) 
[  100.589025] process_one_work (kernel/workqueue.c:2633) 
[  100.589302] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  100.589542] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  100.589791] kthread (kernel/kthread.c:388) 
[  100.589992] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.590228] ret_from_fork (arch/x86/kernel/process.c:147) 
[  100.590492] ? __pfx_kthread (kernel/kthread.c:341) 
[  100.590717] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  108.155989] ------------[ cut here ]------------
| [  108.156259] sysfs group 'bridge' not found for kobject 'br0'
| [  108.156570] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  108.157001] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  108.157738] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  108.158325] Workqueue: netns cleanup_net
[  108.158566] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 108.158850] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  108.159803] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  108.160105] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  108.160496] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  108.160885] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  108.161280] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50ec610
[  108.161673] R13: ffffae1e40063e08 R14: ffff9bbec50ecb80 R15: ffff9bbec3960050
[  108.162073] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  108.162518] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.162813] CR2: 0000000001f20a28 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  108.163216] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.163621] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.164049] PKRU: 55555554
[  108.164222] Call Trace:
[  108.164387]  <TASK>
[  108.164533] ? __warn (kernel/panic.c:677) 
[  108.164739] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.164997] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  108.165224] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  108.165427] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  108.165654] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  108.165937] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.166179] br_dev_delete (net/bridge/br_if.c:396) 
[  108.166401] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  108.166633] cleanup_net (net/core/net_namespace.c:630) 
[  108.166852] ? process_one_work (kernel/workqueue.c:2606) 
[  108.167117] process_one_work (kernel/workqueue.c:2633) 
[  108.167350] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  108.167565] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  108.167824] kthread (kernel/kthread.c:388) 
[  108.168023] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.168263] ret_from_fork (arch/x86/kernel/process.c:147) 
[  108.168478] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.168685] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  108.270127] ------------[ cut here ]------------
| [  108.270544] sysfs group 'bridge' not found for kobject 'br0'
| [  108.271127] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  108.271971] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  108.273659] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  108.274872] Workqueue: netns cleanup_net
[  108.275352] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 108.275847] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  108.277835] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  108.278326] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  108.278980] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  108.279643] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  108.280299] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217c610
[  108.280982] R13: ffffae1e40063e08 R14: ffff9bbec217cb80 R15: ffff9bbec2bf2e50
[  108.281607] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  108.282299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.282670] CR2: 00007f0aab9ff000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  108.283081] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.283488] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.284120] PKRU: 55555554
[  108.284266] Call Trace:
[  108.284401]  <TASK>
[  108.284520] ? __warn (kernel/panic.c:677) 
[  108.284697] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.284928] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  108.285189] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  108.285456] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  108.285858] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  108.286173] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.286394] br_dev_delete (net/bridge/br_if.c:396) 
[  108.286747] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  108.287130] cleanup_net (net/core/net_namespace.c:630) 
[  108.287523] ? process_one_work (kernel/workqueue.c:2606) 
[  108.287934] process_one_work (kernel/workqueue.c:2633) 
[  108.288310] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  108.288663] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  108.289096] kthread (kernel/kthread.c:388) 
[  108.289402] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.289806] ret_from_fork (arch/x86/kernel/process.c:147) 
[  108.290169] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.290491] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  108.295378] ------------[ cut here ]------------
| [  108.295683] sysfs group 'bridge' not found for kobject 'br0'
| [  108.296049] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  108.296755] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  108.297994] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  108.298931] Workqueue: netns cleanup_net
[  108.299302] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 108.299703] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  108.301181] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  108.301475] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  108.301935] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  108.302484] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  108.302876] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b20610
[  108.303298] R13: ffffae1e40063e08 R14: ffff9bbec3b20b80 R15: ffff9bbec2bf2e50
[  108.303889] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  108.304594] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.305120] CR2: 00007f87e1f95270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  108.305664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.306190] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.306910] PKRU: 55555554
[  108.307193] Call Trace:
[  108.307444]  <TASK>
[  108.307687] ? __warn (kernel/panic.c:677) 
[  108.308031] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.308455] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  108.308823] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  108.309215] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  108.309612] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  108.310059] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.310488] br_dev_delete (net/bridge/br_if.c:396) 
[  108.310881] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  108.311350] cleanup_net (net/core/net_namespace.c:630) 
[  108.311721] ? process_one_work (kernel/workqueue.c:2606) 
[  108.312157] process_one_work (kernel/workqueue.c:2633) 
[  108.312399] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  108.312616] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  108.312927] kthread (kernel/kthread.c:388) 
[  108.313104] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.313314] ret_from_fork (arch/x86/kernel/process.c:147) 
[  108.313522] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.313742] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  108.436135] ------------[ cut here ]------------
| [  108.436630] sysfs group 'bridge' not found for kobject 'br0'
| [  108.437233] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  108.437928] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  108.439229] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  108.440222] Workqueue: netns cleanup_net
[  108.440589] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 108.440926] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  108.441991] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  108.442406] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  108.442814] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  108.443231] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  108.443783] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217a610
[  108.444305] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec2bf4550
[  108.444823] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  108.445550] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.446158] CR2: 00007ffc097f17c8 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  108.446936] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.447664] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.448323] PKRU: 55555554
[  108.448593] Call Trace:
[  108.448836]  <TASK>
[  108.449056] ? __warn (kernel/panic.c:677) 
[  108.449378] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.449787] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  108.450166] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  108.450490] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  108.450875] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  108.451356] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  108.451796] br_dev_delete (net/bridge/br_if.c:396) 
[  108.452143] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  108.452631] cleanup_net (net/core/net_namespace.c:630) 
[  108.453029] ? process_one_work (kernel/workqueue.c:2606) 
[  108.453438] process_one_work (kernel/workqueue.c:2633) 
[  108.453852] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  108.454183] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  108.454549] kthread (kernel/kthread.c:388) 
[  108.454834] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.455181] ret_from_fork (arch/x86/kernel/process.c:147) 
[  108.455477] ? __pfx_kthread (kernel/kthread.c:341) 
[  108.455828] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  115.847142] ------------[ cut here ]------------
| [  115.847544] sysfs group 'bridge' not found for kobject 'br0'
| [  115.848015] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  115.848559] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  115.849398] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  115.850096] Workqueue: netns cleanup_net
[  115.850433] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 115.850704] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  115.851945] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  115.852336] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  115.853007] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  115.853706] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  115.854421] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217a610
[  115.855153] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec3be5c50
[  115.855857] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  115.856659] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  115.857233] CR2: 00007fe01898e000 CR3: 0000000002802005 CR4: 0000000000770ef0
[  115.857940] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  115.858529] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  115.859139] PKRU: 55555554
[  115.859414] Call Trace:
[  115.859612]  <TASK>
[  115.859842] ? __warn (kernel/panic.c:677) 
[  115.860140] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  115.860524] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  115.860825] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  115.861178] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  115.861382] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  115.861623] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  115.861868] br_dev_delete (net/bridge/br_if.c:396) 
[  115.862064] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  115.862301] cleanup_net (net/core/net_namespace.c:630) 
[  115.862497] ? process_one_work (kernel/workqueue.c:2606) 
[  115.862714] process_one_work (kernel/workqueue.c:2633) 
[  115.862962] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  115.863162] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  115.863384] kthread (kernel/kthread.c:388) 
[  115.863553] ? __pfx_kthread (kernel/kthread.c:341) 
[  115.863749] ret_from_fork (arch/x86/kernel/process.c:147) 
[  115.863955] ? __pfx_kthread (kernel/kthread.c:341) 
[  115.864153] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  115.950085] ------------[ cut here ]------------
| [  115.950647] sysfs group 'bridge' not found for kobject 'br0'
| [  115.951358] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  115.952320] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  115.953841] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  115.954755] Workqueue: netns cleanup_net
[  115.955144] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 115.955560] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  115.957115] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  115.957386] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  115.957796] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  115.958296] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  115.958654] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b24610
[  115.959026] R13: ffffae1e40063e08 R14: ffff9bbec3b24b80 R15: ffff9bbec2bf4550
[  115.959390] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  115.959893] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  115.960356] CR2: 00007fe01898e000 CR3: 0000000002802005 CR4: 0000000000770ef0
[  115.960745] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  115.961294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  115.961862] PKRU: 55555554
[  115.962107] Call Trace:
[  115.962330]  <TASK>
[  115.962513] ? __warn (kernel/panic.c:677) 
[  115.962805] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  115.963194] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  115.963519] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  115.963815] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  115.964129] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  115.964505] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  115.964873] br_dev_delete (net/bridge/br_if.c:396) 
[  115.965192] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  115.965577] cleanup_net (net/core/net_namespace.c:630) 
[  115.965910] ? process_one_work (kernel/workqueue.c:2606) 
[  115.966263] process_one_work (kernel/workqueue.c:2633) 
[  115.966603] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  115.966937] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  115.967315] kthread (kernel/kthread.c:388) 
[  115.967576] ? __pfx_kthread (kernel/kthread.c:341) 
[  115.967854] ret_from_fork (arch/x86/kernel/process.c:147) 
[  115.968148] ? __pfx_kthread (kernel/kthread.c:341) 
[  115.968438] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  115.972020] ------------[ cut here ]------------
| [  115.972316] sysfs group 'bridge' not found for kobject 'br0'
| [  115.972668] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  115.973231] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  115.974057] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  115.974673] Workqueue: netns cleanup_net
[  115.974915] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 115.975183] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  115.976146] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  115.976429] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  115.976789] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  115.977158] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  115.977565] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2178610
[  115.977975] R13: ffffae1e40063e08 R14: ffff9bbec2178b80 R15: ffff9bbec2bf4550
[  115.978365] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  115.978809] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  115.979126] CR2: 00007fd52b328000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  115.979530] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  115.979940] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  115.980351] PKRU: 55555554
[  115.980516] Call Trace:
[  115.980664]  <TASK>
[  115.980824] ? __warn (kernel/panic.c:677) 
[  115.981035] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  115.981296] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  115.981528] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  115.981732] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  115.981971] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  115.982232] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  115.982479] br_dev_delete (net/bridge/br_if.c:396) 
[  115.982692] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  115.983004] cleanup_net (net/core/net_namespace.c:630) 
[  115.983229] ? process_one_work (kernel/workqueue.c:2606) 
[  115.983480] process_one_work (kernel/workqueue.c:2633) 
[  115.983719] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  115.983954] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  115.984199] kthread (kernel/kthread.c:388) 
[  115.984384] ? __pfx_kthread (kernel/kthread.c:341) 
[  115.984626] ret_from_fork (arch/x86/kernel/process.c:147) 
[  115.984848] ? __pfx_kthread (kernel/kthread.c:341) 
[  115.985075] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  116.106110] ------------[ cut here ]------------
| [  116.106499] sysfs group 'bridge' not found for kobject 'br0'
| [  116.106809] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  116.107424] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  116.108605] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  116.109540] Workqueue: netns cleanup_net
[  116.109888] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 116.110311] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  116.111844] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  116.112282] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  116.112971] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  116.113578] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  116.114221] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50ea610
[  116.114836] R13: ffffae1e40063e08 R14: ffff9bbec50eab80 R15: ffff9bbec2bf5c50
[  116.115433] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  116.116161] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  116.116661] CR2: 0000555b8c6c4168 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  116.117254] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  116.117866] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  116.118356] PKRU: 55555554
[  116.118500] Call Trace:
[  116.118657]  <TASK>
[  116.118774] ? __warn (kernel/panic.c:677) 
[  116.119008] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  116.119263] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  116.119534] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  116.119814] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  116.120039] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  116.120283] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  116.120562] br_dev_delete (net/bridge/br_if.c:396) 
[  116.120897] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  116.121337] cleanup_net (net/core/net_namespace.c:630) 
[  116.121534] ? process_one_work (kernel/workqueue.c:2606) 
[  116.121864] process_one_work (kernel/workqueue.c:2633) 
[  116.122216] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  116.122549] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  116.122965] kthread (kernel/kthread.c:388) 
[  116.123265] ? __pfx_kthread (kernel/kthread.c:341) 
[  116.123613] ret_from_fork (arch/x86/kernel/process.c:147) 
[  116.123950] ? __pfx_kthread (kernel/kthread.c:341) 
[  116.124302] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  123.476147] ------------[ cut here ]------------
| [  123.476404] sysfs group 'bridge' not found for kobject 'br0'
| [  123.476715] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  123.477148] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  123.478270] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  123.479523] Workqueue: netns cleanup_net
[  123.479957] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 123.480592] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  123.482514] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  123.483202] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  123.484027] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  123.484937] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  123.485724] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233e610
[  123.486495] R13: ffffae1e40063e08 R14: ffff9bbec233eb80 R15: ffff9bbec2bf4550
[  123.487142] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  123.487879] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  123.488501] CR2: 00007f9d9552e7f0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  123.489249] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  123.490017] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  123.490795] PKRU: 55555554
[  123.491202] Call Trace:
[  123.491415]  <TASK>
[  123.491534] ? __warn (kernel/panic.c:677) 
[  123.491726] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.491987] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  123.492219] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  123.492407] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  123.492609] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  123.492838] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.493067] br_dev_delete (net/bridge/br_if.c:396) 
[  123.493260] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  123.493492] cleanup_net (net/core/net_namespace.c:630) 
[  123.493684] ? process_one_work (kernel/workqueue.c:2606) 
[  123.493912] process_one_work (kernel/workqueue.c:2633) 
[  123.494124] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  123.494323] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  123.494545] kthread (kernel/kthread.c:388) 
[  123.494716] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.494924] ret_from_fork (arch/x86/kernel/process.c:147) 
[  123.495118] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.495314] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  123.619130] ------------[ cut here ]------------
| [  123.619412] sysfs group 'bridge' not found for kobject 'br0'
| [  123.619771] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  123.620244] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  123.621040] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  123.621672] Workqueue: netns cleanup_net
[  123.621915] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 123.622185] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  123.623172] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  123.623470] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  123.623886] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  123.624289] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  123.624669] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233c610
[  123.625089] R13: ffffae1e40063e08 R14: ffff9bbec233cb80 R15: ffffffff9b278f90
[  123.625496] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  123.625978] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  123.626286] CR2: 00007f10b23d7000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  123.626676] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  123.627105] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  123.627497] PKRU: 55555554
[  123.627652] Call Trace:
[  123.627812]  <TASK>
[  123.627967] ? __warn (kernel/panic.c:677) 
[  123.628207] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.628437] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  123.628659] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  123.628874] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  123.629107] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  123.629383] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.629631] br_dev_delete (net/bridge/br_if.c:396) 
[  123.629852] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  123.630108] cleanup_net (net/core/net_namespace.c:630) 
[  123.630314] ? process_one_work (kernel/workqueue.c:2606) 
[  123.630577] process_one_work (kernel/workqueue.c:2633) 
[  123.630823] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  123.631051] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  123.631283] kthread (kernel/kthread.c:388) 
[  123.631494] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.631734] ret_from_fork (arch/x86/kernel/process.c:147) 
[  123.631966] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.632173] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  123.634989] ------------[ cut here ]------------
| [  123.635506] sysfs group 'bridge' not found for kobject 'br0'
| [  123.636098] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  123.636845] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  123.638262] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  123.639458] Workqueue: netns cleanup_net
[  123.639853] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 123.640314] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  123.641832] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  123.642133] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  123.642599] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  123.642983] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  123.643353] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b22610
[  123.643713] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffffffff9b278f90
[  123.644101] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  123.644508] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  123.645118] CR2: 00007ffc097f1e28 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  123.645665] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  123.646239] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  123.647051] PKRU: 55555554
[  123.647344] Call Trace:
[  123.647611]  <TASK>
[  123.647866] ? __warn (kernel/panic.c:677) 
[  123.648226] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.648655] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  123.649121] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  123.649602] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  123.650023] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  123.650530] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.650982] br_dev_delete (net/bridge/br_if.c:396) 
[  123.651447] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  123.651927] cleanup_net (net/core/net_namespace.c:630) 
[  123.652340] ? process_one_work (kernel/workqueue.c:2606) 
[  123.652771] process_one_work (kernel/workqueue.c:2633) 
[  123.653169] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  123.653592] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  123.654011] kthread (kernel/kthread.c:388) 
[  123.654370] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.654721] ret_from_fork (arch/x86/kernel/process.c:147) 
[  123.655099] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.655580] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  123.659816] ------------[ cut here ]------------
| [  123.660078] sysfs group 'bridge' not found for kobject 'br0'
| [  123.660419] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  123.661058] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  123.662049] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  123.663071] Workqueue: netns cleanup_net
[  123.663408] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 123.663832] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  123.665562] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  123.666106] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  123.666805] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  123.667564] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  123.668306] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233a610
[  123.669146] R13: ffffae1e40063e08 R14: ffff9bbec233ab80 R15: ffffffff9b278f90
[  123.669842] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  123.670747] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  123.671399] CR2: 00007ffc097f1e28 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  123.672207] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  123.672927] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  123.673499] PKRU: 55555554
[  123.673752] Call Trace:
[  123.674066]  <TASK>
[  123.674271] ? __warn (kernel/panic.c:677) 
[  123.674700] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.675190] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  123.675596] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  123.675981] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  123.676492] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  123.676964] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  123.677341] br_dev_delete (net/bridge/br_if.c:396) 
[  123.677726] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  123.678234] cleanup_net (net/core/net_namespace.c:630) 
[  123.678426] ? process_one_work (kernel/workqueue.c:2606) 
[  123.678678] process_one_work (kernel/workqueue.c:2633) 
[  123.678929] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  123.679214] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  123.679441] kthread (kernel/kthread.c:388) 
[  123.679610] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.679827] ret_from_fork (arch/x86/kernel/process.c:147) 
[  123.680029] ? __pfx_kthread (kernel/kthread.c:341) 
[  123.680245] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  131.167090] ------------[ cut here ]------------
| [  131.167489] sysfs group 'bridge' not found for kobject 'br0'
| [  131.168015] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  131.168719] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  131.169615] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  131.170417] Workqueue: netns cleanup_net
[  131.170628] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 131.170877] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  131.172124] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  131.172533] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  131.173171] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  131.173837] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  131.174457] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3834610
[  131.175121] R13: ffffae1e40063e08 R14: ffff9bbec3834b80 R15: ffff9bbec3be1750
[  131.175792] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  131.176519] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.177031] CR2: 00007f5e3be1f000 CR3: 0000000002802005 CR4: 0000000000770ef0
[  131.177656] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  131.178285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  131.178888] PKRU: 55555554
[  131.179146] Call Trace:
[  131.179360]  <TASK>
[  131.179558] ? __warn (kernel/panic.c:677) 
[  131.179848] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.180223] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  131.180535] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  131.180830] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  131.181139] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  131.181495] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.181866] br_dev_delete (net/bridge/br_if.c:396) 
[  131.182064] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  131.182319] cleanup_net (net/core/net_namespace.c:630) 
[  131.182555] ? process_one_work (kernel/workqueue.c:2606) 
[  131.182803] process_one_work (kernel/workqueue.c:2633) 
[  131.183025] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  131.183225] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  131.183450] kthread (kernel/kthread.c:388) 
[  131.183643] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.183879] ret_from_fork (arch/x86/kernel/process.c:147) 
[  131.184093] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.184308] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  131.283101] ------------[ cut here ]------------
| [  131.283723] sysfs group 'bridge' not found for kobject 'br0'
| [  131.284459] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  131.285461] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  131.287277] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  131.288575] Workqueue: netns cleanup_net
[  131.288959] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 131.289405] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  131.291064] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  131.291531] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  131.291972] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  131.292358] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  131.292799] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec389c610
[  131.293352] R13: ffffae1e40063e08 R14: ffff9bbec389cb80 R15: ffff9bbec2bf1750
[  131.293718] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  131.294309] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.294940] CR2: 00007f5e3be1f000 CR3: 0000000002802005 CR4: 0000000000770ef0
[  131.295541] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  131.296228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  131.297116] PKRU: 55555554
[  131.297377] Call Trace:
[  131.297612]  <TASK>
[  131.297845] ? __warn (kernel/panic.c:677) 
[  131.298134] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.298504] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  131.298873] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  131.299237] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  131.299600] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  131.300020] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.300427] br_dev_delete (net/bridge/br_if.c:396) 
[  131.300755] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  131.301182] cleanup_net (net/core/net_namespace.c:630) 
[  131.301494] ? process_one_work (kernel/workqueue.c:2606) 
[  131.301940] process_one_work (kernel/workqueue.c:2633) 
[  131.302362] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  131.302690] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  131.303107] kthread (kernel/kthread.c:388) 
[  131.303386] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.303731] ret_from_fork (arch/x86/kernel/process.c:147) 
[  131.304075] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.304423] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  131.307695] ------------[ cut here ]------------
| [  131.308179] sysfs group 'bridge' not found for kobject 'br0'
| [  131.308837] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  131.309792] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  131.311510] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  131.312938] Workqueue: netns cleanup_net
[  131.313403] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 131.313926] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  131.315757] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  131.316230] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  131.316874] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  131.317303] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  131.317717] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec389e610
[  131.318133] R13: ffffae1e40063e08 R14: ffff9bbec389eb80 R15: ffff9bbec2bf1750
[  131.318593] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  131.319124] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.319683] CR2: 00007f5e3be1f000 CR3: 0000000002802005 CR4: 0000000000770ef0
[  131.320174] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  131.320893] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  131.321708] PKRU: 55555554
[  131.322032] Call Trace:
[  131.322316]  <TASK>
[  131.322588] ? __warn (kernel/panic.c:677) 
[  131.322964] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.323389] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  131.323760] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  131.324068] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  131.324424] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  131.324819] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.325190] br_dev_delete (net/bridge/br_if.c:396) 
[  131.325524] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  131.325958] cleanup_net (net/core/net_namespace.c:630) 
[  131.326324] ? process_one_work (kernel/workqueue.c:2606) 
[  131.326731] process_one_work (kernel/workqueue.c:2633) 
[  131.327094] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  131.327458] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  131.327850] kthread (kernel/kthread.c:388) 
[  131.328140] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.328472] ret_from_fork (arch/x86/kernel/process.c:147) 
[  131.328778] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.329154] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  131.446106] ------------[ cut here ]------------
| [  131.446577] sysfs group 'bridge' not found for kobject 'br0'
| [  131.447172] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  131.447965] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  131.449274] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  131.450284] Workqueue: netns cleanup_net
[  131.450697] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 131.451135] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  131.452664] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  131.453142] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  131.453740] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  131.454167] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  131.454591] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a2610
[  131.455000] R13: ffffae1e40063e08 R14: ffff9bbec52a2b80 R15: ffff9bbec3964550
[  131.455365] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  131.455783] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.456083] CR2: 00007f5e3be1f000 CR3: 0000000002802005 CR4: 0000000000770ef0
[  131.456447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  131.456813] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  131.457180] PKRU: 55555554
[  131.457325] Call Trace:
[  131.457459]  <TASK>
[  131.457576] ? __warn (kernel/panic.c:677) 
[  131.457756] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.457979] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  131.458176] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  131.458362] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  131.458565] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  131.458798] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  131.459026] br_dev_delete (net/bridge/br_if.c:396) 
[  131.459223] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  131.459452] cleanup_net (net/core/net_namespace.c:630) 
[  131.459651] ? process_one_work (kernel/workqueue.c:2606) 
[  131.459871] process_one_work (kernel/workqueue.c:2633) 
[  131.460089] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  131.460286] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  131.460511] kthread (kernel/kthread.c:388) 
[  131.460687] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.460884] ret_from_fork (arch/x86/kernel/process.c:147) 
[  131.461081] ? __pfx_kthread (kernel/kthread.c:341) 
[  131.461278] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  141.497114] ------------[ cut here ]------------
| [  141.497516] sysfs group 'bridge' not found for kobject 'br0'
| [  141.498010] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  141.498707] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  141.499948] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  141.500580] Workqueue: netns cleanup_net
[  141.500861] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 141.501195] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  141.502409] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  141.502934] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  141.503415] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  141.504112] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  141.504838] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233e610
[  141.505589] R13: ffffae1e40063e08 R14: ffff9bbec233eb80 R15: ffff9bbec5014550
[  141.506312] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  141.507097] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.507731] CR2: 00007f711328c000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  141.508420] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.509080] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.509728] PKRU: 55555554
[  141.509974] Call Trace:
[  141.510228]  <TASK>
[  141.510415] ? __warn (kernel/panic.c:677) 
[  141.510748] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.511113] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  141.511450] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  141.511796] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  141.512041] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  141.512284] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.512524] br_dev_delete (net/bridge/br_if.c:396) 
[  141.512717] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  141.513043] cleanup_net (net/core/net_namespace.c:630) 
[  141.513238] ? process_one_work (kernel/workqueue.c:2606) 
[  141.513454] process_one_work (kernel/workqueue.c:2633) 
[  141.513666] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  141.513864] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  141.514090] kthread (kernel/kthread.c:388) 
[  141.514261] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.514458] ret_from_fork (arch/x86/kernel/process.c:147) 
[  141.514648] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.514844] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  141.598085] ------------[ cut here ]------------
| [  141.598478] sysfs group 'bridge' not found for kobject 'br0'
| [  141.599001] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  141.599670] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  141.600920] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  141.601554] Workqueue: netns cleanup_net
[  141.601786] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 141.602177] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  141.603248] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  141.603682] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  141.604172] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  141.604879] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  141.605605] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3832610
[  141.606307] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffff9bbec3964550
[  141.607006] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  141.607803] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.608415] CR2: 00007f711328c000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  141.609191] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.609812] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.610468] PKRU: 55555554
[  141.610703] Call Trace:
[  141.610959]  <TASK>
[  141.611184] ? __warn (kernel/panic.c:677) 
[  141.611484] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.611834] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  141.612199] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  141.612467] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  141.612668] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  141.612929] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.613185] br_dev_delete (net/bridge/br_if.c:396) 
[  141.613543] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  141.613774] cleanup_net (net/core/net_namespace.c:630) 
[  141.613976] ? process_one_work (kernel/workqueue.c:2606) 
[  141.614195] process_one_work (kernel/workqueue.c:2633) 
[  141.614504] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  141.614835] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  141.615242] kthread (kernel/kthread.c:388) 
[  141.615502] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.615828] ret_from_fork (arch/x86/kernel/process.c:147) 
[  141.616137] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.616412] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  141.620743] ------------[ cut here ]------------
| [  141.621017] sysfs group 'bridge' not found for kobject 'br0'
| [  141.621336] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  141.621761] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  141.622557] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  141.623153] Workqueue: netns cleanup_net
[  141.623389] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 141.623669] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  141.624618] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  141.624900] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  141.625295] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  141.625687] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  141.626076] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217e610
[  141.626447] R13: ffffae1e40063e08 R14: ffff9bbec217eb80 R15: ffff9bbec3964550
[  141.626836] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  141.627281] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.627598] CR2: 00007f7042bc8000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  141.627974] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.628363] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.628756] PKRU: 55555554
[  141.628932] Call Trace:
[  141.629077]  <TASK>
[  141.629222] ? __warn (kernel/panic.c:677) 
[  141.629426] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.629663] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  141.629871] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  141.630086] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  141.630318] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  141.630563] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.630792] br_dev_delete (net/bridge/br_if.c:396) 
[  141.631012] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  141.631276] cleanup_net (net/core/net_namespace.c:630) 
[  141.631493] ? process_one_work (kernel/workqueue.c:2606) 
[  141.631720] process_one_work (kernel/workqueue.c:2633) 
[  141.631963] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  141.632195] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  141.632440] kthread (kernel/kthread.c:388) 
[  141.632622] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.632858] ret_from_fork (arch/x86/kernel/process.c:147) 
[  141.633086] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.633304] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  141.748119] ------------[ cut here ]------------
| [  141.748393] sysfs group 'bridge' not found for kobject 'br0'
| [  141.748730] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  141.749180] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  141.750008] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  141.750623] Workqueue: netns cleanup_net
[  141.750869] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 141.751164] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  141.752171] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  141.752467] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  141.752880] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  141.753305] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  141.753712] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2338610
[  141.754112] R13: ffffae1e40063e08 R14: ffff9bbec2338b80 R15: ffff9bbec2bf2e50
[  141.754524] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  141.754987] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.755325] CR2: 00007f7042bc8000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  141.755698] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.756092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.756489] PKRU: 55555554
[  141.756657] Call Trace:
[  141.756808]  <TASK>
[  141.756955] ? __warn (kernel/panic.c:677) 
[  141.757160] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.757401] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  141.757623] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  141.757839] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  141.758092] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  141.758342] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  141.758570] br_dev_delete (net/bridge/br_if.c:396) 
[  141.758800] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  141.759096] cleanup_net (net/core/net_namespace.c:630) 
[  141.759321] ? process_one_work (kernel/workqueue.c:2606) 
[  141.759576] process_one_work (kernel/workqueue.c:2633) 
[  141.759819] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  141.760059] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  141.760337] kthread (kernel/kthread.c:388) 
[  141.760537] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.760745] ret_from_fork (arch/x86/kernel/process.c:147) 
[  141.760956] ? __pfx_kthread (kernel/kthread.c:341) 
[  141.761187] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  181.672197] ------------[ cut here ]------------
| [  181.672592] sysfs group 'bridge' not found for kobject 'br0'
| [  181.673074] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  181.673708] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  181.674855] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  181.675739] Workqueue: netns cleanup_net
[  181.676113] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 181.676507] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  181.677880] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  181.678325] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  181.678895] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  181.679464] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  181.680029] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217a610
[  181.680573] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec2bf1750
[  181.681144] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  181.681806] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  181.682268] CR2: 00007f9c7620611c CR3: 0000000002802002 CR4: 0000000000770ef0
[  181.682826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  181.683402] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  181.683986] PKRU: 55555554
[  181.684222] Call Trace:
[  181.684444]  <TASK>
[  181.684660] ? __warn (kernel/panic.c:677) 
[  181.684958] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.685317] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  181.685632] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  181.685928] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  181.686259] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  181.686623] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.686970] br_dev_delete (net/bridge/br_if.c:396) 
[  181.687265] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  181.687636] cleanup_net (net/core/net_namespace.c:630) 
[  181.687948] ? process_one_work (kernel/workqueue.c:2606) 
[  181.688290] process_one_work (kernel/workqueue.c:2633) 
[  181.688617] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  181.688952] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  181.689317] kthread (kernel/kthread.c:388) 
[  181.689595] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.689898] ret_from_fork (arch/x86/kernel/process.c:147) 
[  181.690214] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.690539] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  181.815123] ------------[ cut here ]------------
| [  181.815690] sysfs group 'bridge' not found for kobject 'br0'
| [  181.816423] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  181.817081] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  181.818324] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  181.819157] Workqueue: netns cleanup_net
[  181.819679] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 181.820332] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  181.822350] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  181.822894] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  181.823378] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  181.823854] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  181.824419] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50ee610
[  181.825043] R13: ffffae1e40063e08 R14: ffff9bbec50eeb80 R15: ffffffff9b278f90
[  181.825659] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  181.826361] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  181.826845] CR2: 00007f2ff1bfa000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  181.827446] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  181.828061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  181.828669] PKRU: 55555554
[  181.828935] Call Trace:
[  181.829166]  <TASK>
[  181.829362] ? __warn (kernel/panic.c:677) 
[  181.829645] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.830093] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  181.830552] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  181.830879] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  181.831305] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  181.831749] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.832040] br_dev_delete (net/bridge/br_if.c:396) 
[  181.832298] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  181.832686] cleanup_net (net/core/net_namespace.c:630) 
[  181.832944] ? process_one_work (kernel/workqueue.c:2606) 
[  181.833231] process_one_work (kernel/workqueue.c:2633) 
[  181.833507] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  181.833767] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  181.834144] kthread (kernel/kthread.c:388) 
[  181.834490] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.834832] ret_from_fork (arch/x86/kernel/process.c:147) 
[  181.835086] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.835488] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  181.840282] ------------[ cut here ]------------
| [  181.840548] sysfs group 'bridge' not found for kobject 'br0'
| [  181.840870] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  181.841353] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  181.842144] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  181.842767] Workqueue: netns cleanup_net
[  181.843019] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 181.843296] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  181.844263] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  181.844569] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  181.844978] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  181.845367] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  181.845744] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50e8610
[  181.846142] R13: ffffae1e40063e08 R14: ffff9bbec50e8b80 R15: ffffffff9b278f90
[  181.846536] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  181.846983] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  181.847292] CR2: 00007fd7c6aff000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  181.847703] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  181.848110] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  181.848500] PKRU: 55555554
[  181.848661] Call Trace:
[  181.848829]  <TASK>
[  181.848986] ? __warn (kernel/panic.c:677) 
[  181.849184] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.849418] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  181.849642] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  181.849865] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  181.850100] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  181.850338] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.850586] br_dev_delete (net/bridge/br_if.c:396) 
[  181.850812] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  181.851076] cleanup_net (net/core/net_namespace.c:630) 
[  181.851283] ? process_one_work (kernel/workqueue.c:2606) 
[  181.851535] process_one_work (kernel/workqueue.c:2633) 
[  181.851794] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  181.852019] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  181.852255] kthread (kernel/kthread.c:388) 
[  181.852447] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.852695] ret_from_fork (arch/x86/kernel/process.c:147) 
[  181.852918] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.853127] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  181.855884] ------------[ cut here ]------------
| [  181.856186] sysfs group 'bridge' not found for kobject 'br0'
| [  181.856495] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  181.856912] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  181.857653] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  181.858393] Workqueue: netns cleanup_net
[  181.858736] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 181.859187] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  181.860795] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  181.861248] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  181.861836] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  181.862452] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  181.863115] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec1936610
[  181.863489] R13: ffffae1e40063e08 R14: ffff9bbec1936b80 R15: ffffffff9b278f90
[  181.863891] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  181.864373] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  181.864920] CR2: 00007f980c29e270 CR3: 00000000055a2005 CR4: 0000000000770ef0
[  181.865330] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  181.865790] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  181.866418] PKRU: 55555554
[  181.866614] Call Trace:
[  181.866748]  <TASK>
[  181.866889] ? __warn (kernel/panic.c:677) 
[  181.867217] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.867634] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  181.868085] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  181.868450] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  181.868839] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  181.869293] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  181.869706] br_dev_delete (net/bridge/br_if.c:396) 
[  181.870057] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  181.870472] cleanup_net (net/core/net_namespace.c:630) 
[  181.870806] ? process_one_work (kernel/workqueue.c:2606) 
[  181.871201] process_one_work (kernel/workqueue.c:2633) 
[  181.871578] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  181.871951] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  181.872368] kthread (kernel/kthread.c:388) 
[  181.872692] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.873093] ret_from_fork (arch/x86/kernel/process.c:147) 
[  181.873470] ? __pfx_kthread (kernel/kthread.c:341) 
[  181.873857] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  192.451308] ------------[ cut here ]------------
| [  192.451628] sysfs group 'bridge' not found for kobject 'br0'
| [  192.452201] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  192.453084] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  192.454665] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  192.455865] Workqueue: netns cleanup_net
[  192.456278] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 192.456731] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  192.458491] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  192.458974] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  192.459734] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  192.460516] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  192.461219] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5282610
[  192.461961] R13: ffffae1e40063e08 R14: ffff9bbec5282b80 R15: ffff9bbec3964550
[  192.462628] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  192.463485] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  192.464001] CR2: 00007f49349dd000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  192.464796] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  192.465482] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  192.466174] PKRU: 55555554
[  192.466513] Call Trace:
[  192.466713]  <TASK>
[  192.467002] ? __warn (kernel/panic.c:677) 
[  192.467352] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.467665] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  192.468047] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  192.468369] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  192.468687] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  192.469079] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.469463] br_dev_delete (net/bridge/br_if.c:396) 
[  192.469785] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  192.470169] cleanup_net (net/core/net_namespace.c:630) 
[  192.470363] ? process_one_work (kernel/workqueue.c:2606) 
[  192.470581] process_one_work (kernel/workqueue.c:2633) 
[  192.470837] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  192.471120] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  192.471485] kthread (kernel/kthread.c:388) 
[  192.471719] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.472001] ret_from_fork (arch/x86/kernel/process.c:147) 
[  192.472278] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.472656] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  192.578114] ------------[ cut here ]------------
| [  192.578377] sysfs group 'bridge' not found for kobject 'br0'
| [  192.578884] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  192.579710] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  192.581119] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  192.582229] Workqueue: netns cleanup_net
[  192.582658] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 192.583165] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  192.584997] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  192.585518] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  192.586260] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  192.586939] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  192.587557] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3836610
[  192.588023] R13: ffffae1e40063e08 R14: ffff9bbec3836b80 R15: ffff9bbec5012e50
[  192.588544] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  192.589029] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  192.589467] CR2: 00007fed34c2c000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  192.590201] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  192.590830] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  192.591461] PKRU: 55555554
[  192.591693] Call Trace:
[  192.591932]  <TASK>
[  192.592144] ? __warn (kernel/panic.c:677) 
[  192.592436] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.592853] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  192.593226] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  192.593608] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  192.593987] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  192.594409] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.594813] br_dev_delete (net/bridge/br_if.c:396) 
[  192.595142] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  192.595550] cleanup_net (net/core/net_namespace.c:630) 
[  192.595920] ? process_one_work (kernel/workqueue.c:2606) 
[  192.596314] process_one_work (kernel/workqueue.c:2633) 
[  192.596702] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  192.597044] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  192.597445] kthread (kernel/kthread.c:388) 
[  192.597733] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.598105] ret_from_fork (arch/x86/kernel/process.c:147) 
[  192.598438] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.598796] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  192.603066] ------------[ cut here ]------------
| [  192.603404] sysfs group 'bridge' not found for kobject 'br0'
| [  192.603917] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  192.604598] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  192.605425] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  192.606256] Workqueue: netns cleanup_net
[  192.606463] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 192.606711] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  192.607927] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  192.608321] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  192.608873] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  192.609559] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  192.610233] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b26610
[  192.610946] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffff9bbec5012e50
[  192.611744] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  192.612542] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  192.613159] CR2: 00007fed34c2c000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  192.613861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  192.614604] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  192.615319] PKRU: 55555554
[  192.615579] Call Trace:
[  192.615841]  <TASK>
[  192.616168] ? __warn (kernel/panic.c:677) 
[  192.616658] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.617167] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  192.617711] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  192.618096] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  192.618474] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  192.619013] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.619437] br_dev_delete (net/bridge/br_if.c:396) 
[  192.619806] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  192.620341] cleanup_net (net/core/net_namespace.c:630) 
[  192.620764] ? process_one_work (kernel/workqueue.c:2606) 
[  192.621171] process_one_work (kernel/workqueue.c:2633) 
[  192.621452] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  192.621763] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  192.622188] kthread (kernel/kthread.c:388) 
[  192.622530] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.622799] ret_from_fork (arch/x86/kernel/process.c:147) 
[  192.623032] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.623256] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  192.841238] ------------[ cut here ]------------
| [  192.841833] sysfs group 'bridge' not found for kobject 'br0'
| [  192.842571] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  192.843557] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  192.845317] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  192.846755] Workqueue: netns cleanup_net
[  192.847224] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 192.847788] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  192.849917] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  192.850530] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  192.851084] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  192.851728] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  192.852281] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2338610
[  192.852830] R13: ffffae1e40063e08 R14: ffff9bbec2338b80 R15: ffff9bbec3961750
[  192.853380] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  192.854002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  192.854440] CR2: 00007fcc62146000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  192.854993] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  192.855544] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  192.856102] PKRU: 55555554
[  192.856325] Call Trace:
[  192.856530]  <TASK>
[  192.856710] ? __warn (kernel/panic.c:677) 
[  192.856986] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.857320] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  192.857605] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  192.857889] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  192.858205] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  192.858547] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  192.858871] br_dev_delete (net/bridge/br_if.c:396) 
[  192.859167] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  192.859506] cleanup_net (net/core/net_namespace.c:630) 
[  192.859789] ? process_one_work (kernel/workqueue.c:2606) 
[  192.860126] process_one_work (kernel/workqueue.c:2633) 
[  192.860443] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  192.860734] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  192.861082] kthread (kernel/kthread.c:388) 
[  192.861330] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.861621] ret_from_fork (arch/x86/kernel/process.c:147) 
[  192.861924] ? __pfx_kthread (kernel/kthread.c:341) 
[  192.862224] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  233.488210] ------------[ cut here ]------------
| [  233.488469] sysfs group 'bridge' not found for kobject 'br0'
| [  233.488784] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  233.489394] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  233.490597] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  233.491564] Workqueue: netns cleanup_net
[  233.491938] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.492238] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  233.493376] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  233.493800] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  233.494166] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  233.494629] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  233.495158] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3834610
[  233.495657] R13: ffffae1e40063e08 R14: ffff9bbec3834b80 R15: ffff9bbec2bf5c50
[  233.496301] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  233.497016] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  233.497618] CR2: 00007fc2de9e92a8 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  233.498285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  233.498920] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  233.499566] PKRU: 55555554
[  233.499809] Call Trace:
[  233.500046]  <TASK>
[  233.500249] ? __warn (kernel/panic.c:677) 
[  233.500563] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.500951] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  233.501323] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  233.501629] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  233.501968] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  233.502334] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.502698] br_dev_delete (net/bridge/br_if.c:396) 
[  233.503019] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  233.503372] cleanup_net (net/core/net_namespace.c:630) 
[  233.503702] ? process_one_work (kernel/workqueue.c:2606) 
[  233.504026] process_one_work (kernel/workqueue.c:2633) 
[  233.504395] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  233.504686] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  233.505030] kthread (kernel/kthread.c:388) 
[  233.505199] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.505422] ret_from_fork (arch/x86/kernel/process.c:147) 
[  233.505639] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.505836] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  233.627088] ------------[ cut here ]------------
| [  233.627543] sysfs group 'bridge' not found for kobject 'br0'
| [  233.628092] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  233.628925] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  233.630390] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  233.631511] Workqueue: netns cleanup_net
[  233.631925] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.632455] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  233.634067] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  233.634371] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  233.634825] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  233.635408] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  233.635795] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5284610
[  233.636271] R13: ffffae1e40063e08 R14: ffff9bbec5284b80 R15: ffffffff9b278f90
[  233.636894] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  233.637560] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  233.638225] CR2: 00007ffc097f17c8 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  233.639084] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  233.639949] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  233.640872] PKRU: 55555554
[  233.641200] Call Trace:
[  233.641527]  <TASK>
[  233.641785] ? __warn (kernel/panic.c:677) 
[  233.642196] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.642703] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  233.643134] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  233.643517] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  233.643943] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  233.644341] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.644793] br_dev_delete (net/bridge/br_if.c:396) 
[  233.645173] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  233.645672] cleanup_net (net/core/net_namespace.c:630) 
[  233.646016] ? process_one_work (kernel/workqueue.c:2606) 
[  233.646454] process_one_work (kernel/workqueue.c:2633) 
[  233.646847] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  233.647084] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  233.647336] kthread (kernel/kthread.c:388) 
[  233.647599] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.647794] ret_from_fork (arch/x86/kernel/process.c:147) 
[  233.647994] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.648218] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  233.650810] ------------[ cut here ]------------
| [  233.651106] sysfs group 'bridge' not found for kobject 'br0'
| [  233.651418] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  233.651831] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  233.652592] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  233.653175] Workqueue: netns cleanup_net
[  233.653387] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.653647] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  233.654620] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  233.654919] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  233.655302] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  233.655678] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  233.656076] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233a610
[  233.656453] R13: ffffae1e40063e08 R14: ffff9bbec233ab80 R15: ffffffff9b278f90
[  233.656816] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  233.657237] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  233.657546] CR2: 00007fda2bf96000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  233.657932] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  233.658298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  233.658659] PKRU: 55555554
[  233.658804] Call Trace:
[  233.658942]  <TASK>
[  233.659060] ? __warn (kernel/panic.c:677) 
[  233.659236] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.659454] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  233.659649] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  233.659836] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  233.660044] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  233.660269] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.660486] br_dev_delete (net/bridge/br_if.c:396) 
[  233.660677] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  233.660926] cleanup_net (net/core/net_namespace.c:630) 
[  233.661216] ? process_one_work (kernel/workqueue.c:2606) 
[  233.661539] process_one_work (kernel/workqueue.c:2633) 
[  233.661836] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  233.662102] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  233.662432] kthread (kernel/kthread.c:388) 
[  233.662677] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.662974] ret_from_fork (arch/x86/kernel/process.c:147) 
[  233.663260] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.663556] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  233.667326] ------------[ cut here ]------------
| [  233.667584] sysfs group 'bridge' not found for kobject 'br0'
| [  233.667896] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  233.668355] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  233.669106] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  233.669710] Workqueue: netns cleanup_net
[  233.669928] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 233.670181] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  233.671151] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  233.671425] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  233.671813] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  233.672190] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  233.672584] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217c610
[  233.672978] R13: ffffae1e40063e08 R14: ffff9bbec217cb80 R15: ffffffff9b278f90
[  233.673342] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  233.673782] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  233.674093] CR2: 0000555b8ad16dec CR3: 00000000026cc002 CR4: 0000000000770ef0
[  233.674460] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  233.674841] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  233.675227] PKRU: 55555554
[  233.675375] Call Trace:
[  233.675510]  <TASK>
[  233.675630] ? __warn (kernel/panic.c:677) 
[  233.675804] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.676063] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  233.676260] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  233.676449] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  233.676651] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  233.676877] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  233.677137] br_dev_delete (net/bridge/br_if.c:396) 
[  233.677333] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  233.677565] cleanup_net (net/core/net_namespace.c:630) 
[  233.677758] ? process_one_work (kernel/workqueue.c:2606) 
[  233.677988] process_one_work (kernel/workqueue.c:2633) 
[  233.678228] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  233.678435] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  233.678659] kthread (kernel/kthread.c:388) 
[  233.678828] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.679040] ret_from_fork (arch/x86/kernel/process.c:147) 
[  233.679237] ? __pfx_kthread (kernel/kthread.c:341) 
[  233.679469] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  241.964109] ------------[ cut here ]------------
| [  241.964583] sysfs group 'bridge' not found for kobject 'br0'
| [  241.965166] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  241.966196] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  241.967726] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  241.968797] Workqueue: netns cleanup_net
[  241.969180] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 241.969632] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  241.971365] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  241.971716] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  241.972287] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  241.972874] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  241.973311] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39ba610
[  241.973727] R13: ffffae1e40063e08 R14: ffff9bbec39bab80 R15: ffff9bbec3961750
[  241.974280] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  241.974929] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  241.975389] CR2: 00007fdbd2285000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  241.976051] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  241.976752] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  241.977533] PKRU: 55555554
[  241.977939] Call Trace:
[  241.978195]  <TASK>
[  241.978450] ? __warn (kernel/panic.c:677) 
[  241.978803] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  241.979232] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  241.979699] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  241.980061] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  241.980469] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  241.980966] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  241.981397] br_dev_delete (net/bridge/br_if.c:396) 
[  241.981866] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  241.982296] cleanup_net (net/core/net_namespace.c:630) 
[  241.982711] ? process_one_work (kernel/workqueue.c:2606) 
[  241.983103] process_one_work (kernel/workqueue.c:2633) 
[  241.983528] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  241.983883] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  241.984288] kthread (kernel/kthread.c:388) 
[  241.984699] ? __pfx_kthread (kernel/kthread.c:341) 
[  241.985116] ret_from_fork (arch/x86/kernel/process.c:147) 
[  241.985496] ? __pfx_kthread (kernel/kthread.c:341) 
[  241.985928] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  242.091092] ------------[ cut here ]------------
| [  242.091615] sysfs group 'bridge' not found for kobject 'br0'
| [  242.092155] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  242.092892] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  242.094275] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  242.095458] Workqueue: netns cleanup_net
[  242.095882] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 242.096415] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  242.098169] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  242.098670] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  242.099257] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  242.099979] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  242.100633] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3830610
[  242.101241] R13: ffffae1e40063e08 R14: ffff9bbec3830b80 R15: ffff9bbec3be0050
[  242.101899] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  242.102715] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  242.103301] CR2: 00007fdbd2285000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  242.103831] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  242.104263] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  242.104746] PKRU: 55555554
[  242.105002] Call Trace:
[  242.105291]  <TASK>
[  242.105436] ? __warn (kernel/panic.c:677) 
[  242.105619] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  242.105845] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  242.106052] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  242.106293] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  242.106634] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  242.107078] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  242.107341] br_dev_delete (net/bridge/br_if.c:396) 
[  242.107601] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  242.107984] cleanup_net (net/core/net_namespace.c:630) 
[  242.108372] ? process_one_work (kernel/workqueue.c:2606) 
[  242.108795] process_one_work (kernel/workqueue.c:2633) 
[  242.109242] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  242.109623] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  242.110114] kthread (kernel/kthread.c:388) 
[  242.110447] ? __pfx_kthread (kernel/kthread.c:341) 
[  242.110826] ret_from_fork (arch/x86/kernel/process.c:147) 
[  242.111209] ? __pfx_kthread (kernel/kthread.c:341) 
[  242.111617] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  242.117027] ------------[ cut here ]------------
| [  242.117808] sysfs group 'bridge' not found for kobject 'br0'
| [  242.118756] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  242.119947] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  242.121446] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  242.122562] Workqueue: netns cleanup_net
[  242.122866] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 242.123413] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  242.125040] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  242.125349] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  242.125796] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  242.126387] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  242.126935] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b24610
[  242.127301] R13: ffffae1e40063e08 R14: ffff9bbec3b24b80 R15: ffff9bbec3be0050
[  242.127731] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  242.128487] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  242.129051] CR2: 00007f9cae236000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  242.129718] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  242.130692] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  242.131196] PKRU: 55555554
[  242.131386] Call Trace:
[  242.131636]  <TASK>
[  242.131846] ? __warn (kernel/panic.c:677) 
[  242.132085] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  242.132526] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  242.132864] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  242.133226] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  242.133678] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  242.134114] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  242.134607] br_dev_delete (net/bridge/br_if.c:396) 
[  242.135054] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  242.135496] cleanup_net (net/core/net_namespace.c:630) 
[  242.135948] ? process_one_work (kernel/workqueue.c:2606) 
[  242.136397] process_one_work (kernel/workqueue.c:2633) 
[  242.136798] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  242.137210] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  242.137684] kthread (kernel/kthread.c:388) 
[  242.138053] ? __pfx_kthread (kernel/kthread.c:341) 
[  242.138470] ret_from_fork (arch/x86/kernel/process.c:147) 
[  242.138879] ? __pfx_kthread (kernel/kthread.c:341) 
[  242.139324] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  242.254191] ------------[ cut here ]------------
| [  242.254652] sysfs group 'bridge' not found for kobject 'br0'
| [  242.255739] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  242.256857] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel
[  242.258825] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  242.260811] Workqueue: netns cleanup_net
[  242.261289] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 242.261864] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  242.263824] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  242.264312] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  242.265048] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  242.265761] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  242.266460] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3832610
[  242.267208] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffff9bbec2bf5c50
[  242.268041] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  242.268910] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  242.269568] CR2: 00007f4dd24d6000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  242.270234] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  242.270674] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  242.271152] PKRU: 55555554
[  242.271297] Call Trace:
[  242.271428]  <TASK>
[  242.271545] ? __warn (kernel/panic.c:677) 
[  242.271720] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  242.272057] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  242.272453] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  242.272797] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  242.273029] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  242.273291] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  242.273655] br_dev_delete (net/bridge/br_if.c:396) 
[  242.273931] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  242.274314] cleanup_net (net/core/net_namespace.c:630) 
[  242.274633] ? process_one_work (kernel/workqueue.c:2606) 
[  242.275047] process_one_work (kernel/workqueue.c:2633) 
[  242.275424] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  242.275780] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  242.276203] kthread (kernel/kthread.c:388) 
[  242.276538] ? __pfx_kthread (kernel/kthread.c:341) 
[  242.276880] ret_from_fork (arch/x86/kernel/process.c:147) 
[  242.277238] ? __pfx_kthread (kernel/kthread.c:341) 
[  242.277595] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  252.316281] ------------[ cut here ]------------
| [  252.316748] sysfs group 'bridge' not found for kobject 'br0'
| [  252.317300] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  252.318056] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  252.319675] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  252.320876] Workqueue: netns cleanup_net
[  252.321331] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 252.321811] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  252.324008] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  252.324632] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  252.325491] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  252.326252] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  252.327001] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf0610
[  252.327489] R13: ffffae1e40063e08 R14: ffff9bbec3bf0b80 R15: ffff9bbec2bf1750
[  252.328001] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  252.328539] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  252.328936] CR2: 00007f9d953300e0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  252.329411] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  252.329867] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  252.330334] PKRU: 55555554
[  252.330522] Call Trace:
[  252.330697]  <TASK>
[  252.330857] ? __warn (kernel/panic.c:677) 
[  252.331051] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.331271] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  252.331481] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  252.331667] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  252.331884] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  252.332114] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.332343] br_dev_delete (net/bridge/br_if.c:396) 
[  252.332536] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  252.332768] cleanup_net (net/core/net_namespace.c:630) 
[  252.332966] ? process_one_work (kernel/workqueue.c:2606) 
[  252.333186] process_one_work (kernel/workqueue.c:2633) 
[  252.333401] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  252.333601] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  252.333823] kthread (kernel/kthread.c:388) 
[  252.333999] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.334197] ret_from_fork (arch/x86/kernel/process.c:147) 
[  252.334387] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.334584] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  252.464102] ------------[ cut here ]------------
| [  252.464616] sysfs group 'bridge' not found for kobject 'br0'
| [  252.465332] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  252.466107] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  252.467528] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  252.468443] Workqueue: netns cleanup_net
[  252.468721] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 252.468977] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  252.470112] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  252.470383] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  252.470795] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  252.471370] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  252.471764] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b22610
[  252.472375] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffffffff9b278f90
[  252.473168] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  252.474158] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  252.474893] CR2: 00007f9d953300e0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  252.475825] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  252.476752] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  252.477671] PKRU: 55555554
[  252.478021] Call Trace:
[  252.478305]  <TASK>
[  252.478591] ? __warn (kernel/panic.c:677) 
[  252.479003] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.479481] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  252.479919] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  252.480366] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  252.480820] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  252.481357] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.481722] br_dev_delete (net/bridge/br_if.c:396) 
[  252.482049] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  252.482453] cleanup_net (net/core/net_namespace.c:630) 
[  252.482736] ? process_one_work (kernel/workqueue.c:2606) 
[  252.483066] process_one_work (kernel/workqueue.c:2633) 
[  252.483376] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  252.483628] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  252.483852] kthread (kernel/kthread.c:388) 
[  252.484031] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.484277] ret_from_fork (arch/x86/kernel/process.c:147) 
[  252.484472] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.484668] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  252.487233] ------------[ cut here ]------------
| [  252.487473] sysfs group 'bridge' not found for kobject 'br0'
| [  252.487777] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  252.488204] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  252.489090] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  252.489665] Workqueue: netns cleanup_net
[  252.489870] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 252.490129] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  252.491062] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  252.491397] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  252.491895] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  252.492510] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  252.492910] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233c610
[  252.493297] R13: ffffae1e40063e08 R14: ffff9bbec233cb80 R15: ffffffff9b278f90
[  252.493724] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  252.494139] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  252.494453] CR2: 00007f9d953300e0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  252.494847] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  252.495232] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  252.495626] PKRU: 55555554
[  252.495772] Call Trace:
[  252.495930]  <TASK>
[  252.496048] ? __warn (kernel/panic.c:677) 
[  252.496220] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.496444] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  252.496650] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  252.496851] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  252.497079] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  252.497320] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.497586] br_dev_delete (net/bridge/br_if.c:396) 
[  252.497781] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  252.498021] cleanup_net (net/core/net_namespace.c:630) 
[  252.498220] ? process_one_work (kernel/workqueue.c:2606) 
[  252.498448] process_one_work (kernel/workqueue.c:2633) 
[  252.498671] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  252.498871] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  252.499103] kthread (kernel/kthread.c:388) 
[  252.499273] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.499500] ret_from_fork (arch/x86/kernel/process.c:147) 
[  252.499708] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.499944] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  252.502823] ------------[ cut here ]------------
| [  252.503087] sysfs group 'bridge' not found for kobject 'br0'
| [  252.503411] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  252.503869] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  252.504827] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  252.505462] Workqueue: netns cleanup_net
[  252.505716] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 252.505972] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  252.507014] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  252.507304] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  252.507697] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  252.508081] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  252.508490] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf2610
[  252.508868] R13: ffffae1e40063e08 R14: ffff9bbec3bf2b80 R15: ffffffff9b278f90
[  252.509257] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  252.509749] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  252.510050] CR2: 00007f9d953300e0 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  252.510449] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  252.510849] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  252.511356] PKRU: 55555554
[  252.511519] Call Trace:
[  252.511681]  <TASK>
[  252.511804] ? __warn (kernel/panic.c:677) 
[  252.511987] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.512237] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  252.512438] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  252.512662] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  252.512865] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  252.513111] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  252.513348] br_dev_delete (net/bridge/br_if.c:396) 
[  252.513591] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  252.513840] cleanup_net (net/core/net_namespace.c:630) 
[  252.514043] ? process_one_work (kernel/workqueue.c:2606) 
[  252.514262] process_one_work (kernel/workqueue.c:2633) 
[  252.514485] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  252.514684] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  252.514914] kthread (kernel/kthread.c:388) 
[  252.515084] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.515285] ret_from_fork (arch/x86/kernel/process.c:147) 
[  252.515485] ? __pfx_kthread (kernel/kthread.c:341) 
[  252.515682] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  262.195125] ------------[ cut here ]------------
| [  262.195601] sysfs group 'bridge' not found for kobject 'br0'
| [  262.196226] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  262.197271] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  262.198955] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  262.200046] Workqueue: netns cleanup_net
[  262.200443] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 262.200915] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  262.202419] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  262.202880] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  262.203477] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  262.204114] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  262.204552] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233c610
[  262.204952] R13: ffffae1e40063e08 R14: ffff9bbec233cb80 R15: ffff9bbec3be0050
[  262.205324] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  262.205730] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  262.206028] CR2: 00007f3575a83000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  262.206389] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  262.206749] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  262.207113] PKRU: 55555554
[  262.207257] Call Trace:
[  262.207390]  <TASK>
[  262.207507] ? __warn (kernel/panic.c:677) 
[  262.207692] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.207948] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  262.208145] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  262.208331] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  262.208532] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  262.208755] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.208977] br_dev_delete (net/bridge/br_if.c:396) 
[  262.209174] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  262.209403] cleanup_net (net/core/net_namespace.c:630) 
[  262.209600] ? process_one_work (kernel/workqueue.c:2606) 
[  262.209830] process_one_work (kernel/workqueue.c:2633) 
[  262.210053] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  262.210249] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  262.210476] kthread (kernel/kthread.c:388) 
[  262.210643] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.210839] ret_from_fork (arch/x86/kernel/process.c:147) 
[  262.211040] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.211236] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  262.303103] ------------[ cut here ]------------
| [  262.303665] sysfs group 'bridge' not found for kobject 'br0'
| [  262.304389] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  262.305172] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  262.306925] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  262.308076] Workqueue: netns cleanup_net
[  262.308316] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 262.308588] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  262.309803] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  262.310081] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  262.310535] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  262.311148] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  262.311660] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5280610
[  262.312546] R13: ffffae1e40063e08 R14: ffff9bbec5280b80 R15: ffff9bbec3964550
[  262.313444] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  262.314455] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  262.315109] CR2: 00007f3575a83000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  262.315992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  262.316873] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  262.317601] PKRU: 55555554
[  262.317829] Call Trace:
[  262.318035]  <TASK>
[  262.318246] ? __warn (kernel/panic.c:677) 
[  262.318528] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.318936] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  262.319329] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  262.319617] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  262.319991] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  262.320362] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.320726] br_dev_delete (net/bridge/br_if.c:396) 
[  262.321064] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  262.321336] cleanup_net (net/core/net_namespace.c:630) 
[  262.321579] ? process_one_work (kernel/workqueue.c:2606) 
[  262.321874] process_one_work (kernel/workqueue.c:2633) 
[  262.322284] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  262.322503] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  262.322762] kthread (kernel/kthread.c:388) 
[  262.322969] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.323167] ret_from_fork (arch/x86/kernel/process.c:147) 
[  262.323390] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.323660] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  262.327734] ------------[ cut here ]------------
| [  262.328212] sysfs group 'bridge' not found for kobject 'br0'
| [  262.328883] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  262.329682] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  262.331309] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  262.332389] Workqueue: netns cleanup_net
[  262.332797] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 262.333255] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  262.334374] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  262.334654] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  262.335045] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  262.335626] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  262.336041] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b26610
[  262.336766] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffff9bbec3964550
[  262.337555] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  262.338408] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  262.339192] CR2: 00007f3575a83000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  262.340139] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  262.340859] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  262.341543] PKRU: 55555554
[  262.341827] Call Trace:
[  262.342070]  <TASK>
[  262.342213] ? __warn (kernel/panic.c:677) 
[  262.342524] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.342895] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  262.343242] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  262.343595] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  262.343931] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  262.344276] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.344694] br_dev_delete (net/bridge/br_if.c:396) 
[  262.345010] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  262.345337] cleanup_net (net/core/net_namespace.c:630) 
[  262.345530] ? process_one_work (kernel/workqueue.c:2606) 
[  262.345778] process_one_work (kernel/workqueue.c:2633) 
[  262.346074] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  262.346462] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  262.346766] kthread (kernel/kthread.c:388) 
[  262.346941] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.347201] ret_from_fork (arch/x86/kernel/process.c:147) 
[  262.347471] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.347780] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  262.480120] ------------[ cut here ]------------
| [  262.480397] sysfs group 'bridge' not found for kobject 'br0'
| [  262.480734] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  262.481180] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  262.482109] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  262.482713] Workqueue: netns cleanup_net
[  262.482945] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 262.483211] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  262.484160] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  262.484450] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  262.484828] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  262.485209] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  262.485591] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5286610
[  262.485958] R13: ffffae1e40063e08 R14: ffff9bbec5286b80 R15: ffff9bbec2bf4550
[  262.486349] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  262.486807] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  262.487130] CR2: 00007f4e9c9a1000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  262.487511] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  262.487896] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  262.488287] PKRU: 55555554
[  262.488471] Call Trace:
[  262.488624]  <TASK>
[  262.488754] ? __warn (kernel/panic.c:677) 
[  262.488955] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.489268] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  262.489531] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  262.489806] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  262.490035] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  262.490332] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  262.490632] br_dev_delete (net/bridge/br_if.c:396) 
[  262.490924] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  262.491250] cleanup_net (net/core/net_namespace.c:630) 
[  262.491544] ? process_one_work (kernel/workqueue.c:2606) 
[  262.491867] process_one_work (kernel/workqueue.c:2633) 
[  262.492212] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  262.492505] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  262.492826] kthread (kernel/kthread.c:388) 
[  262.493087] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.493394] ret_from_fork (arch/x86/kernel/process.c:147) 
[  262.493683] ? __pfx_kthread (kernel/kthread.c:341) 
[  262.493970] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  272.377145] ------------[ cut here ]------------
| [  272.377733] sysfs group 'bridge' not found for kobject 'br0'
| [  272.378333] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  272.379219] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  272.380955] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  272.382259] Workqueue: netns cleanup_net
[  272.382715] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 272.383179] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  272.384691] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  272.385042] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  272.385625] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  272.386211] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  272.386578] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2338610
[  272.386948] R13: ffffae1e40063e08 R14: ffff9bbec2338b80 R15: ffff9bbec3961750
[  272.387436] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  272.388149] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  272.388523] CR2: 0000555b8c6cba50 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  272.388930] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  272.389515] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  272.390155] PKRU: 55555554
[  272.390405] Call Trace:
[  272.390646]  <TASK>
[  272.390891] ? __warn (kernel/panic.c:677) 
[  272.391247] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.391639] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  272.391991] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  272.392363] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  272.392730] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  272.393140] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.393557] br_dev_delete (net/bridge/br_if.c:396) 
[  272.393934] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  272.394342] cleanup_net (net/core/net_namespace.c:630) 
[  272.394709] ? process_one_work (kernel/workqueue.c:2606) 
[  272.395118] process_one_work (kernel/workqueue.c:2633) 
[  272.395504] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  272.395880] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  272.396280] kthread (kernel/kthread.c:388) 
[  272.396581] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.396942] ret_from_fork (arch/x86/kernel/process.c:147) 
[  272.397257] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.397606] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  272.532142] ------------[ cut here ]------------
| [  272.532575] sysfs group 'bridge' not found for kobject 'br0'
| [  272.533100] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  272.533711] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  272.535203] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  272.536144] Workqueue: netns cleanup_net
[  272.536375] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 272.536656] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  272.537931] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  272.538228] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  272.538613] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  272.539008] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  272.539467] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b22610
[  272.540120] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffff9bbec2bf4550
[  272.540779] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  272.541417] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  272.541877] CR2: 0000555b8c6cba50 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  272.542523] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  272.542946] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  272.543532] PKRU: 55555554
[  272.543797] Call Trace:
[  272.544066]  <TASK>
[  272.544272] ? __warn (kernel/panic.c:677) 
[  272.544568] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.544969] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  272.545384] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  272.545778] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  272.546178] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  272.546604] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.547069] br_dev_delete (net/bridge/br_if.c:396) 
[  272.547486] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  272.547932] cleanup_net (net/core/net_namespace.c:630) 
[  272.548342] ? process_one_work (kernel/workqueue.c:2606) 
[  272.548813] process_one_work (kernel/workqueue.c:2633) 
[  272.549262] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  272.549662] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  272.550103] kthread (kernel/kthread.c:388) 
[  272.550420] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.550786] ret_from_fork (arch/x86/kernel/process.c:147) 
[  272.551160] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.551547] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  272.555640] ------------[ cut here ]------------
| [  272.555887] sysfs group 'bridge' not found for kobject 'br0'
| [  272.556203] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  272.556810] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  272.558148] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  272.559087] Workqueue: netns cleanup_net
[  272.559426] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 272.559873] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  272.561780] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  272.562283] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  272.562925] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  272.563659] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  272.564311] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf4610
[  272.564935] R13: ffffae1e40063e08 R14: ffff9bbec3bf4b80 R15: ffff9bbec2bf4550
[  272.565590] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  272.566373] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  272.566955] CR2: 0000555b8c6cba50 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  272.567674] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  272.568376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  272.569027] PKRU: 55555554
[  272.569310] Call Trace:
[  272.569528]  <TASK>
[  272.569700] ? __warn (kernel/panic.c:677) 
[  272.570023] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.570413] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  272.570701] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  272.571013] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  272.571382] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  272.571775] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.572166] br_dev_delete (net/bridge/br_if.c:396) 
[  272.572445] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  272.572848] cleanup_net (net/core/net_namespace.c:630) 
[  272.573204] ? process_one_work (kernel/workqueue.c:2606) 
[  272.573552] process_one_work (kernel/workqueue.c:2633) 
[  272.573955] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  272.574307] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  272.574696] kthread (kernel/kthread.c:388) 
[  272.574879] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.575097] ret_from_fork (arch/x86/kernel/process.c:147) 
[  272.575324] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.575580] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  272.684119] ------------[ cut here ]------------
| [  272.684554] sysfs group 'bridge' not found for kobject 'br0'
| [  272.685092] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  272.685799] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  272.687316] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  272.688300] Workqueue: netns cleanup_net
[  272.688663] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 272.689112] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  272.690401] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  272.690796] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  272.691214] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  272.691583] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  272.691953] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b26610
[  272.692581] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffff9bbec3965c50
[  272.693387] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  272.693942] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  272.694448] CR2: 0000555b8c6cba50 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  272.695182] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  272.695932] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  272.696567] PKRU: 55555554
[  272.696920] Call Trace:
[  272.697149]  <TASK>
[  272.697375] ? __warn (kernel/panic.c:677) 
[  272.697708] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.698113] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  272.698488] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  272.698828] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  272.699183] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  272.699576] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  272.699975] br_dev_delete (net/bridge/br_if.c:396) 
[  272.700316] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  272.700698] cleanup_net (net/core/net_namespace.c:630) 
[  272.701027] ? process_one_work (kernel/workqueue.c:2606) 
[  272.701408] process_one_work (kernel/workqueue.c:2633) 
[  272.701756] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  272.702098] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  272.702477] kthread (kernel/kthread.c:388) 
[  272.702751] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.703073] ret_from_fork (arch/x86/kernel/process.c:147) 
[  272.703378] ? __pfx_kthread (kernel/kthread.c:341) 
[  272.703687] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  282.367118] ------------[ cut here ]------------
| [  282.367629] sysfs group 'bridge' not found for kobject 'br0'
| [  282.368233] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  282.369018] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  282.370576] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  282.371603] Workqueue: netns cleanup_net
[  282.371987] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 282.372370] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  282.374040] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  282.374460] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  282.375033] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  282.375570] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  282.376116] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39be610
[  282.376656] R13: ffffae1e40063e08 R14: ffff9bbec39beb80 R15: ffff9bbec3962e50
[  282.377238] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  282.377890] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  282.378191] CR2: 00007f9d953300e0 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  282.378577] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  282.378958] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  282.379321] PKRU: 55555554
[  282.379464] Call Trace:
[  282.379600]  <TASK>
[  282.379719] ? __warn (kernel/panic.c:677) 
[  282.379894] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.380116] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  282.380314] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  282.380500] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  282.380703] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  282.380932] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.381153] br_dev_delete (net/bridge/br_if.c:396) 
[  282.381345] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  282.381574] cleanup_net (net/core/net_namespace.c:630) 
[  282.381767] ? process_one_work (kernel/workqueue.c:2606) 
[  282.381993] process_one_work (kernel/workqueue.c:2633) 
[  282.382218] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  282.382417] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  282.382643] kthread (kernel/kthread.c:388) 
[  282.382811] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.383016] ret_from_fork (arch/x86/kernel/process.c:147) 
[  282.383208] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.383404] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  282.479121] ------------[ cut here ]------------
| [  282.479595] sysfs group 'bridge' not found for kobject 'br0'
| [  282.480111] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  282.480752] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  282.482216] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  282.483134] Workqueue: netns cleanup_net
[  282.483541] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 282.484067] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  282.485664] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  282.486072] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  282.486603] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  282.487385] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  282.488039] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3830610
[  282.488823] R13: ffffae1e40063e08 R14: ffff9bbec3830b80 R15: ffff9bbec3965c50
[  282.489680] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  282.490686] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  282.491447] CR2: 00007f9d953300e0 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  282.492505] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  282.493565] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  282.494511] PKRU: 55555554
[  282.494795] Call Trace:
[  282.494982]  <TASK>
[  282.495219] ? __warn (kernel/panic.c:677) 
[  282.495512] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.495919] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  282.496227] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  282.496586] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  282.496933] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  282.497375] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.497712] br_dev_delete (net/bridge/br_if.c:396) 
[  282.498092] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  282.498509] cleanup_net (net/core/net_namespace.c:630) 
[  282.498784] ? process_one_work (kernel/workqueue.c:2606) 
[  282.499008] process_one_work (kernel/workqueue.c:2633) 
[  282.499258] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  282.499502] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  282.499883] kthread (kernel/kthread.c:388) 
[  282.500083] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.500279] ret_from_fork (arch/x86/kernel/process.c:147) 
[  282.500475] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.500671] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  282.504595] ------------[ cut here ]------------
| [  282.505027] sysfs group 'bridge' not found for kobject 'br0'
| [  282.505636] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  282.506464] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  282.508327] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  282.509890] Workqueue: netns cleanup_net
[  282.510446] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 282.510879] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  282.511909] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  282.512193] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  282.512755] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  282.513281] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  282.513956] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b5a610
[  282.514657] R13: ffffae1e40063e08 R14: ffff9bbec3b5ab80 R15: ffff9bbec3965c50
[  282.515310] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  282.516029] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  282.516526] CR2: 00007f9d953300e0 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  282.517152] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  282.517796] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  282.518430] PKRU: 55555554
[  282.518674] Call Trace:
[  282.518920]  <TASK>
[  282.519135] ? __warn (kernel/panic.c:677) 
[  282.519426] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.519787] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  282.520085] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  282.520400] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  282.520708] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  282.521065] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.521431] br_dev_delete (net/bridge/br_if.c:396) 
[  282.521756] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  282.522138] cleanup_net (net/core/net_namespace.c:630) 
[  282.522423] ? process_one_work (kernel/workqueue.c:2606) 
[  282.523171] process_one_work (kernel/workqueue.c:2633) 
[  282.523543] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  282.523881] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  282.524326] kthread (kernel/kthread.c:388) 
[  282.524680] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.525081] ret_from_fork (arch/x86/kernel/process.c:147) 
[  282.525392] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.525717] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  282.657190] ------------[ cut here ]------------
| [  282.657532] sysfs group 'bridge' not found for kobject 'br0'
| [  282.657863] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  282.658323] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  282.659254] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  282.659829] Workqueue: netns cleanup_net
[  282.660046] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 282.660299] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  282.661492] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  282.661872] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  282.662418] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  282.662976] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  282.663524] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2338610
[  282.664076] R13: ffffae1e40063e08 R14: ffff9bbec2338b80 R15: ffff9bbec3960050
[  282.664629] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  282.665257] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  282.665698] CR2: 00007f9d953300e0 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  282.666262] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  282.666808] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  282.667356] PKRU: 55555554
[  282.667570] Call Trace:
[  282.667768]  <TASK>
[  282.667957] ? __warn (kernel/panic.c:677) 
[  282.668217] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.668539] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  282.668828] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  282.669113] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  282.669413] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  282.669745] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  282.670091] br_dev_delete (net/bridge/br_if.c:396) 
[  282.670386] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  282.670736] cleanup_net (net/core/net_namespace.c:630) 
[  282.671046] ? process_one_work (kernel/workqueue.c:2606) 
[  282.671376] process_one_work (kernel/workqueue.c:2633) 
[  282.671704] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  282.672023] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  282.672412] kthread (kernel/kthread.c:388) 
[  282.672670] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.672980] ret_from_fork (arch/x86/kernel/process.c:147) 
[  282.673270] ? __pfx_kthread (kernel/kthread.c:341) 
[  282.673571] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  291.748153] ------------[ cut here ]------------
| [  291.748633] sysfs group 'bridge' not found for kobject 'br0'
| [  291.749175] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  291.749887] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  291.751462] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  291.752613] Workqueue: netns cleanup_net
[  291.752939] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 291.753354] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  291.754929] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  291.755337] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  291.755920] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  291.756398] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  291.756791] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec217a610
[  291.757353] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec3be0050
[  291.757847] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  291.758310] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  291.758619] CR2: 00007fa0dcc87000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  291.759102] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  291.759647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  291.760210] PKRU: 55555554
[  291.760481] Call Trace:
[  291.760721]  <TASK>
[  291.761003] ? __warn (kernel/panic.c:677) 
[  291.761322] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  291.761707] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  291.762108] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  291.762490] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  291.762850] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  291.763235] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  291.763622] br_dev_delete (net/bridge/br_if.c:396) 
[  291.763958] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  291.764388] cleanup_net (net/core/net_namespace.c:630) 
[  291.764733] ? process_one_work (kernel/workqueue.c:2606) 
[  291.765129] process_one_work (kernel/workqueue.c:2633) 
[  291.765596] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  291.766087] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  291.766489] kthread (kernel/kthread.c:388) 
[  291.766841] ? __pfx_kthread (kernel/kthread.c:341) 
[  291.767202] ret_from_fork (arch/x86/kernel/process.c:147) 
[  291.767609] ? __pfx_kthread (kernel/kthread.c:341) 
[  291.768069] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  291.871088] ------------[ cut here ]------------
| [  291.871488] sysfs group 'bridge' not found for kobject 'br0'
| [  291.872047] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  291.872779] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  291.874385] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  291.875454] Workqueue: netns cleanup_net
[  291.875835] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 291.876302] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  291.877888] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  291.878311] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  291.878914] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  291.879453] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  291.880021] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3832610
[  291.880507] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffff9bbec3960050
[  291.880889] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  291.881339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  291.881799] CR2: 00007fa0dcc87000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  291.882172] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  291.882632] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  291.883211] PKRU: 55555554
[  291.883539] Call Trace:
[  291.883868]  <TASK>
[  291.884150] ? __warn (kernel/panic.c:677) 
[  291.884442] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  291.884914] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  291.885371] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  291.885653] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  291.886035] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  291.886538] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  291.887040] br_dev_delete (net/bridge/br_if.c:396) 
[  291.887493] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  291.888028] cleanup_net (net/core/net_namespace.c:630) 
[  291.888455] ? process_one_work (kernel/workqueue.c:2606) 
[  291.888954] process_one_work (kernel/workqueue.c:2633) 
[  291.889482] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  291.889954] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  291.890459] kthread (kernel/kthread.c:388) 
[  291.890857] ? __pfx_kthread (kernel/kthread.c:341) 
[  291.891328] ret_from_fork (arch/x86/kernel/process.c:147) 
[  291.891761] ? __pfx_kthread (kernel/kthread.c:341) 
[  291.892182] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  291.896034] ------------[ cut here ]------------
| [  291.896272] sysfs group 'bridge' not found for kobject 'br0'
| [  291.896724] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  291.897469] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  291.899031] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  291.900007] Workqueue: netns cleanup_net
[  291.900338] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 291.900773] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  291.902442] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  291.902855] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  291.903423] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  291.904122] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  291.904767] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3830610
[  291.905344] R13: ffffae1e40063e08 R14: ffff9bbec3830b80 R15: ffff9bbec3960050
[  291.905918] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  291.906346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  291.906679] CR2: 00007fa0dcc87000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  291.907190] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  291.907555] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  291.908198] PKRU: 55555554
[  291.908509] Call Trace:
[  291.908718]  <TASK>
[  291.908891] ? __warn (kernel/panic.c:677) 
[  291.909227] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  291.909661] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  291.910127] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  291.910565] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  291.911044] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  291.911560] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  291.912104] br_dev_delete (net/bridge/br_if.c:396) 
[  291.912545] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  291.913094] cleanup_net (net/core/net_namespace.c:630) 
[  291.913522] ? process_one_work (kernel/workqueue.c:2606) 
[  291.914027] process_one_work (kernel/workqueue.c:2633) 
[  291.914529] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  291.914967] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  291.915483] kthread (kernel/kthread.c:388) 
[  291.915892] ? __pfx_kthread (kernel/kthread.c:341) 
[  291.916361] ret_from_fork (arch/x86/kernel/process.c:147) 
[  291.916757] ? __pfx_kthread (kernel/kthread.c:341) 
[  291.917218] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  292.029258] ------------[ cut here ]------------
| [  292.029935] sysfs group 'bridge' not found for kobject 'br0'
| [  292.030714] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  292.031687] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  292.033856] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  292.035280] Workqueue: netns cleanup_net
[  292.035733] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 292.036111] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  292.037790] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  292.038073] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  292.038678] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  292.039461] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  292.040178] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b5c610
[  292.041128] R13: ffffae1e40063e08 R14: ffff9bbec3b5cb80 R15: ffff9bbec2bf1750
[  292.042131] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  292.043253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  292.044053] CR2: 00007fd7e3a40000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  292.045044] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  292.046042] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  292.046979] PKRU: 55555554
[  292.047360] Call Trace:
[  292.047704]  <TASK>
[  292.047930] ? __warn (kernel/panic.c:677) 
[  292.048381] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  292.048935] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  292.049418] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  292.049857] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  292.050372] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  292.050864] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  292.051408] br_dev_delete (net/bridge/br_if.c:396) 
[  292.051912] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  292.052328] cleanup_net (net/core/net_namespace.c:630) 
[  292.052642] ? process_one_work (kernel/workqueue.c:2606) 
[  292.053055] process_one_work (kernel/workqueue.c:2633) 
[  292.053366] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  292.053651] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  292.053930] kthread (kernel/kthread.c:388) 
[  292.054136] ? __pfx_kthread (kernel/kthread.c:341) 
[  292.054375] ret_from_fork (arch/x86/kernel/process.c:147) 
[  292.054605] ? __pfx_kthread (kernel/kthread.c:341) 
[  292.054843] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  301.003115] ------------[ cut here ]------------
| [  301.003556] sysfs group 'bridge' not found for kobject 'br0'
| [  301.003871] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  301.004323] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  301.005638] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  301.006351] Workqueue: netns cleanup_net
[  301.006657] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 301.007066] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  301.008755] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  301.009239] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  301.009913] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  301.010691] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  301.011399] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf4610
[  301.012222] R13: ffffae1e40063e08 R14: ffff9bbec3bf4b80 R15: ffff9bbec2bf2e50
[  301.012895] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  301.013699] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  301.014259] CR2: 0000555b8acc45a0 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  301.014966] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  301.015594] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  301.016299] PKRU: 55555554
[  301.016528] Call Trace:
[  301.016794]  <TASK>
[  301.017034] ? __warn (kernel/panic.c:677) 
[  301.017340] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.017737] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  301.018168] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  301.018611] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  301.019130] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  301.019462] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.019817] br_dev_delete (net/bridge/br_if.c:396) 
[  301.020142] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  301.020487] cleanup_net (net/core/net_namespace.c:630) 
[  301.020778] ? process_one_work (kernel/workqueue.c:2606) 
[  301.021116] process_one_work (kernel/workqueue.c:2633) 
[  301.021437] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  301.021735] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  301.022095] kthread (kernel/kthread.c:388) 
[  301.022354] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.022659] ret_from_fork (arch/x86/kernel/process.c:147) 
[  301.022954] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.023250] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  301.141148] ------------[ cut here ]------------
| [  301.141451] sysfs group 'bridge' not found for kobject 'br0'
| [  301.141810] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  301.142271] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  301.143346] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  301.144011] Workqueue: netns cleanup_net
[  301.144269] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 301.144545] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  301.145559] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  301.145911] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  301.146317] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  301.146701] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  301.147127] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec1cc4610
[  301.147554] R13: ffffae1e40063e08 R14: ffff9bbec1cc4b80 R15: ffff9bbec2bf1750
[  301.147964] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  301.148392] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  301.148741] CR2: 00007f41dec92000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  301.149153] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  301.149576] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  301.149986] PKRU: 55555554
[  301.150188] Call Trace:
[  301.150401]  <TASK>
[  301.150589] ? __warn (kernel/panic.c:677) 
[  301.150792] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.151090] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  301.151348] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  301.151603] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  301.151837] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  301.152150] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.152505] br_dev_delete (net/bridge/br_if.c:396) 
[  301.152790] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  301.153090] cleanup_net (net/core/net_namespace.c:630) 
[  301.153363] ? process_one_work (kernel/workqueue.c:2606) 
[  301.153650] process_one_work (kernel/workqueue.c:2633) 
[  301.153931] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  301.154156] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  301.154434] kthread (kernel/kthread.c:388) 
[  301.154651] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.154885] ret_from_fork (arch/x86/kernel/process.c:147) 
[  301.155097] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.155333] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  301.158263] ------------[ cut here ]------------
| [  301.158616] sysfs group 'bridge' not found for kobject 'br0'
| [  301.158939] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  301.159673] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  301.161317] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  301.162478] Workqueue: netns cleanup_net
[  301.162896] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 301.163353] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  301.165057] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  301.165342] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  301.165755] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  301.166188] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  301.166789] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3bf0610
[  301.167155] R13: ffffae1e40063e08 R14: ffff9bbec3bf0b80 R15: ffff9bbec2bf1750
[  301.167526] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  301.168018] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  301.168570] CR2: 00007f4a3eb0b270 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  301.169223] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  301.169773] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  301.170367] PKRU: 55555554
[  301.170621] Call Trace:
[  301.170755]  <TASK>
[  301.170873] ? __warn (kernel/panic.c:677) 
[  301.171053] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.171407] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  301.171804] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  301.172087] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  301.172409] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  301.172758] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.173132] br_dev_delete (net/bridge/br_if.c:396) 
[  301.173466] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  301.173876] cleanup_net (net/core/net_namespace.c:630) 
[  301.174232] ? process_one_work (kernel/workqueue.c:2606) 
[  301.174593] process_one_work (kernel/workqueue.c:2633) 
[  301.174960] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  301.175327] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  301.175705] kthread (kernel/kthread.c:388) 
[  301.175990] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.176329] ret_from_fork (arch/x86/kernel/process.c:147) 
[  301.176649] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.177003] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  301.305220] ------------[ cut here ]------------
| [  301.305882] sysfs group 'bridge' not found for kobject 'br0'
| [  301.306579] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  301.307281] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  301.308611] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  301.309484] Workqueue: netns cleanup_net
[  301.309943] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 301.310523] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  301.312463] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  301.312942] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  301.313586] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  301.314301] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  301.314959] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a4610
[  301.315659] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec5010050
[  301.316344] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  301.317177] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  301.317752] CR2: 00007ffc097f1e28 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  301.318457] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  301.319192] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  301.319933] PKRU: 55555554
[  301.320166] Call Trace:
[  301.320411]  <TASK>
[  301.320624] ? __warn (kernel/panic.c:677) 
[  301.320948] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.321347] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  301.321676] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  301.322061] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  301.322459] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  301.322851] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  301.323189] br_dev_delete (net/bridge/br_if.c:396) 
[  301.323540] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  301.323930] cleanup_net (net/core/net_namespace.c:630) 
[  301.324315] ? process_one_work (kernel/workqueue.c:2606) 
[  301.324544] process_one_work (kernel/workqueue.c:2633) 
[  301.324784] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  301.325052] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  301.325342] kthread (kernel/kthread.c:388) 
[  301.325558] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.325930] ret_from_fork (arch/x86/kernel/process.c:147) 
[  301.326126] ? __pfx_kthread (kernel/kthread.c:341) 
[  301.326325] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  310.255182] ------------[ cut here ]------------
| [  310.255646] sysfs group 'bridge' not found for kobject 'br0'
| [  310.256209] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  310.256941] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  310.258580] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  310.259593] Workqueue: netns cleanup_net
[  310.259968] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 310.260428] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  310.262094] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  310.262562] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  310.263078] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  310.263523] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  310.264084] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec2338610
[  310.264617] R13: ffffae1e40063e08 R14: ffff9bbec2338b80 R15: ffff9bbec5014550
[  310.265049] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  310.265499] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  310.265803] CR2: 0000555b8c6a8980 CR3: 00000000026cc006 CR4: 0000000000770ef0
[  310.266345] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  310.266875] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  310.267343] PKRU: 55555554
[  310.267573] Call Trace:
[  310.267825]  <TASK>
[  310.268066] ? __warn (kernel/panic.c:677) 
[  310.268413] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.268829] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  310.269216] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  310.269591] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  310.270013] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  310.270427] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.270880] br_dev_delete (net/bridge/br_if.c:396) 
[  310.271242] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  310.271699] cleanup_net (net/core/net_namespace.c:630) 
[  310.272101] ? process_one_work (kernel/workqueue.c:2606) 
[  310.272544] process_one_work (kernel/workqueue.c:2633) 
[  310.272951] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  310.273360] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  310.273804] kthread (kernel/kthread.c:388) 
[  310.274077] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.274457] ret_from_fork (arch/x86/kernel/process.c:147) 
[  310.274777] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.275116] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  310.413144] ------------[ cut here ]------------
| [  310.413655] sysfs group 'bridge' not found for kobject 'br0'
| [  310.414236] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  310.415047] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  310.416748] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  310.417775] Workqueue: netns cleanup_net
[  310.417992] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 310.418302] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  310.419277] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  310.419546] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  310.420067] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  310.420720] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  310.421145] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233e610
[  310.421831] R13: ffffae1e40063e08 R14: ffff9bbec233eb80 R15: ffffffff9b278f90
[  310.422561] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  310.423407] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  310.424007] CR2: 0000555b8c6a8980 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  310.424812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  310.425689] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  310.426458] PKRU: 55555554
[  310.426755] Call Trace:
[  310.427007]  <TASK>
[  310.427235] ? __warn (kernel/panic.c:677) 
[  310.427571] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.428078] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  310.428500] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  310.428857] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  310.429290] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  310.429807] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.430290] br_dev_delete (net/bridge/br_if.c:396) 
[  310.430577] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  310.431034] cleanup_net (net/core/net_namespace.c:630) 
[  310.431387] ? process_one_work (kernel/workqueue.c:2606) 
[  310.431819] process_one_work (kernel/workqueue.c:2633) 
[  310.432215] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  310.432603] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  310.433084] kthread (kernel/kthread.c:388) 
[  310.433405] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.433767] ret_from_fork (arch/x86/kernel/process.c:147) 
[  310.434155] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.434600] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  310.438148] ------------[ cut here ]------------
| [  310.438436] sysfs group 'bridge' not found for kobject 'br0'
| [  310.438833] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  310.439502] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  310.441153] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  310.442265] Workqueue: netns cleanup_net
[  310.442644] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 310.443138] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  310.444872] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  310.445320] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  310.446044] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  310.446827] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  310.447540] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39b8610
[  310.448186] R13: ffffae1e40063e08 R14: ffff9bbec39b8b80 R15: ffffffff9b278f90
[  310.448890] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  310.449624] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  310.450166] CR2: 0000555b8c6a8980 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  310.450813] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  310.451542] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  310.452134] PKRU: 55555554
[  310.452336] Call Trace:
[  310.452559]  <TASK>
[  310.452772] ? __warn (kernel/panic.c:677) 
[  310.453053] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.453454] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  310.453707] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  310.453942] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  310.454186] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  310.454492] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.454748] br_dev_delete (net/bridge/br_if.c:396) 
[  310.454951] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  310.455186] cleanup_net (net/core/net_namespace.c:630) 
[  310.455384] ? process_one_work (kernel/workqueue.c:2606) 
[  310.455601] process_one_work (kernel/workqueue.c:2633) 
[  310.455815] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  310.456031] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  310.456256] kthread (kernel/kthread.c:388) 
[  310.456427] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.456624] ret_from_fork (arch/x86/kernel/process.c:147) 
[  310.456814] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.457018] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  310.459725] ------------[ cut here ]------------
| [  310.459985] sysfs group 'bridge' not found for kobject 'br0'
| [  310.460308] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  310.460743] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  310.461685] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  310.462352] Workqueue: netns cleanup_net
[  310.462579] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 310.462845] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  310.463851] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  310.464145] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  310.464536] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  310.464933] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  310.465316] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec233c610
[  310.465706] R13: ffffae1e40063e08 R14: ffff9bbec233cb80 R15: ffffffff9b278f90
[  310.466116] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  310.466567] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  310.466867] CR2: 0000555b8c6a8980 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  310.467238] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  310.467603] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  310.467988] PKRU: 55555554
[  310.468135] Call Trace:
[  310.468269]  <TASK>
[  310.468391] ? __warn (kernel/panic.c:677) 
[  310.468565] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.468797] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  310.469012] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  310.469202] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  310.469403] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  310.469637] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  310.469898] br_dev_delete (net/bridge/br_if.c:396) 
[  310.470106] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  310.470339] cleanup_net (net/core/net_namespace.c:630) 
[  310.470532] ? process_one_work (kernel/workqueue.c:2606) 
[  310.470759] process_one_work (kernel/workqueue.c:2633) 
[  310.470980] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  310.471180] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  310.471403] kthread (kernel/kthread.c:388) 
[  310.471573] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.471774] ret_from_fork (arch/x86/kernel/process.c:147) 
[  310.471991] ? __pfx_kthread (kernel/kthread.c:341) 
[  310.472189] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  319.383204] ------------[ cut here ]------------
| [  319.383482] sysfs group 'bridge' not found for kobject 'br0'
| [  319.383802] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  319.384235] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  319.385780] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  319.386851] Workqueue: netns cleanup_net
[  319.387239] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 319.387589] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  319.389121] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  319.389543] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  319.390107] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  319.390801] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  319.391200] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3836610
[  319.391614] R13: ffffae1e40063e08 R14: ffff9bbec3836b80 R15: ffff9bbec3960050
[  319.392125] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  319.392591] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  319.393138] CR2: 00007f9531315270 CR3: 0000000006556001 CR4: 0000000000770ef0
[  319.393659] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  319.394353] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  319.395017] PKRU: 55555554
[  319.395248] Call Trace:
[  319.395523]  <TASK>
[  319.395730] ? __warn (kernel/panic.c:677) 
[  319.396144] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.396678] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  319.397147] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  319.397584] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  319.398037] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  319.398581] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.399091] br_dev_delete (net/bridge/br_if.c:396) 
[  319.399548] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  319.400132] cleanup_net (net/core/net_namespace.c:630) 
[  319.400593] ? process_one_work (kernel/workqueue.c:2606) 
[  319.401151] process_one_work (kernel/workqueue.c:2633) 
[  319.401638] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  319.402074] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  319.402598] kthread (kernel/kthread.c:388) 
[  319.403013] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.403471] ret_from_fork (arch/x86/kernel/process.c:147) 
[  319.403877] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.404357] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  319.545138] ------------[ cut here ]------------
| [  319.545646] sysfs group 'bridge' not found for kobject 'br0'
| [  319.546225] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  319.546965] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  319.548341] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  319.549179] Workqueue: netns cleanup_net
[  319.549402] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 319.549660] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  319.550972] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  319.551298] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  319.551928] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  319.552634] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  319.553280] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a0610
[  319.553973] R13: ffffae1e40063e08 R14: ffff9bbec52a0b80 R15: ffffffff9b278f90
[  319.554654] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  319.555422] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  319.555981] CR2: 00007f04c92a1000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  319.556633] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  319.557260] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  319.557963] PKRU: 55555554
[  319.558241] Call Trace:
[  319.558453]  <TASK>
[  319.558647] ? __warn (kernel/panic.c:677) 
[  319.558956] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.559325] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  319.559641] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  319.559997] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  319.560326] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  319.560742] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.561063] br_dev_delete (net/bridge/br_if.c:396) 
[  319.561432] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  319.561807] cleanup_net (net/core/net_namespace.c:630) 
[  319.562129] ? process_one_work (kernel/workqueue.c:2606) 
[  319.562355] process_one_work (kernel/workqueue.c:2633) 
[  319.562603] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  319.562836] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  319.563125] kthread (kernel/kthread.c:388) 
[  319.563297] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.563499] ret_from_fork (arch/x86/kernel/process.c:147) 
[  319.563704] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.563921] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  319.566526] ------------[ cut here ]------------
| [  319.566776] sysfs group 'bridge' not found for kobject 'br0'
| [  319.567108] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  319.567515] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  319.568433] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  319.569016] Workqueue: netns cleanup_net
[  319.569241] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 319.569493] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  319.570461] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  319.570744] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  319.571118] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  319.571485] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  319.571874] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b26610
[  319.572253] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffffffff9b278f90
[  319.572636] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  319.573053] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  319.573350] CR2: 00007f04c92a1000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  319.573724] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  319.574105] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  319.574482] PKRU: 55555554
[  319.574629] Call Trace:
[  319.574762]  <TASK>
[  319.574886] ? __warn (kernel/panic.c:677) 
[  319.575075] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.575293] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  319.575489] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  319.575678] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  319.575889] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  319.576130] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.576350] br_dev_delete (net/bridge/br_if.c:396) 
[  319.576544] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  319.576777] cleanup_net (net/core/net_namespace.c:630) 
[  319.576976] ? process_one_work (kernel/workqueue.c:2606) 
[  319.577198] process_one_work (kernel/workqueue.c:2633) 
[  319.577421] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  319.577625] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  319.577852] kthread (kernel/kthread.c:388) 
[  319.578026] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.578224] ret_from_fork (arch/x86/kernel/process.c:147) 
[  319.578416] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.578614] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  319.581230] ------------[ cut here ]------------
| [  319.581470] sysfs group 'bridge' not found for kobject 'br0'
| [  319.581784] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  319.582227] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  319.583134] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  319.583727] Workqueue: netns cleanup_net
[  319.583946] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 319.584200] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  319.585159] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  319.585434] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  319.585806] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  319.586178] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  319.586540] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3834610
[  319.586913] R13: ffffae1e40063e08 R14: ffff9bbec3834b80 R15: ffffffff9b278f90
[  319.587279] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  319.587696] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  319.588002] CR2: 00007f04c92a1000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  319.588379] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  319.588742] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  319.589126] PKRU: 55555554
[  319.589269] Call Trace:
[  319.589406]  <TASK>
[  319.589521] ? __warn (kernel/panic.c:677) 
[  319.589695] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.589926] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  319.590128] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  319.590322] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  319.590525] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  319.590755] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  319.590982] br_dev_delete (net/bridge/br_if.c:396) 
[  319.591174] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  319.591408] cleanup_net (net/core/net_namespace.c:630) 
[  319.591613] ? process_one_work (kernel/workqueue.c:2606) 
[  319.591834] process_one_work (kernel/workqueue.c:2633) 
[  319.592125] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  319.592330] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  319.592561] kthread (kernel/kthread.c:388) 
[  319.592738] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.592947] ret_from_fork (arch/x86/kernel/process.c:147) 
[  319.593146] ? __pfx_kthread (kernel/kthread.c:341) 
[  319.593345] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  328.803262] ------------[ cut here ]------------
| [  328.803635] sysfs group 'bridge' not found for kobject 'br0'
| [  328.804217] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  328.804914] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  328.806676] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  328.808083] Workqueue: netns cleanup_net
[  328.808645] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 328.809342] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  328.811773] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  328.812462] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  328.813368] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  328.814306] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  328.815223] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec5286610
[  328.816047] R13: ffffae1e40063e08 R14: ffff9bbec5286b80 R15: ffff9bbec3964550
[  328.816890] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  328.817618] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  328.818165] CR2: 00007feea21e9000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  328.818751] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  328.819338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  328.819959] PKRU: 55555554
[  328.820216] Call Trace:
[  328.820456]  <TASK>
[  328.820685] ? __warn (kernel/panic.c:677) 
[  328.820981] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  328.821248] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  328.821445] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  328.821666] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  328.821916] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  328.822209] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  328.822529] br_dev_delete (net/bridge/br_if.c:396) 
[  328.822774] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  328.823102] cleanup_net (net/core/net_namespace.c:630) 
[  328.823448] ? process_one_work (kernel/workqueue.c:2606) 
[  328.823672] process_one_work (kernel/workqueue.c:2633) 
[  328.823884] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  328.824090] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  328.824330] kthread (kernel/kthread.c:388) 
[  328.824605] ? __pfx_kthread (kernel/kthread.c:341) 
[  328.824920] ret_from_fork (arch/x86/kernel/process.c:147) 
[  328.825251] ? __pfx_kthread (kernel/kthread.c:341) 
[  328.825590] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  328.946164] ------------[ cut here ]------------
| [  328.946430] sysfs group 'bridge' not found for kobject 'br0'
| [  328.946762] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  328.947214] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  328.948171] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  328.948773] Workqueue: netns cleanup_net
[  328.949007] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 328.949286] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  328.950244] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  328.950569] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  328.950956] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  328.951347] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  328.951748] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3834610
[  328.952161] R13: ffffae1e40063e08 R14: ffff9bbec3834b80 R15: ffff9bbec3961750
[  328.952559] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  328.953024] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  328.953350] CR2: 0000555b8c6bc760 CR3: 00000000026cc003 CR4: 0000000000770ef0
[  328.953773] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  328.954185] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  328.954626] PKRU: 55555554
[  328.954802] Call Trace:
[  328.954976]  <TASK>
[  328.955156] ? __warn (kernel/panic.c:677) 
[  328.955369] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  328.955642] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  328.955876] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  328.956099] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  328.956345] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  328.956618] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  328.956918] br_dev_delete (net/bridge/br_if.c:396) 
[  328.957153] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  328.957421] cleanup_net (net/core/net_namespace.c:630) 
[  328.957657] ? process_one_work (kernel/workqueue.c:2606) 
[  328.957931] process_one_work (kernel/workqueue.c:2633) 
[  328.958186] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  328.958424] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  328.958681] kthread (kernel/kthread.c:388) 
[  328.958891] ? __pfx_kthread (kernel/kthread.c:341) 
[  328.959165] ret_from_fork (arch/x86/kernel/process.c:147) 
[  328.959385] ? __pfx_kthread (kernel/kthread.c:341) 
[  328.959608] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  328.962474] ------------[ cut here ]------------
| [  328.962847] sysfs group 'bridge' not found for kobject 'br0'
| [  328.963345] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  328.964252] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  328.965762] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  328.966661] Workqueue: netns cleanup_net
[  328.967088] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 328.967529] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  328.969115] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  328.969625] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  328.970357] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  328.971214] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  328.972120] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b26610
[  328.972984] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffff9bbec3961750
[  328.973840] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  328.974862] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  328.975580] CR2: 00007fd254cb730d CR3: 000000003ce60006 CR4: 0000000000770ef0
[  328.976444] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  328.977357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  328.978304] PKRU: 55555554
[  328.978613] Call Trace:
[  328.978947]  <TASK>
[  328.979213] ? __warn (kernel/panic.c:677) 
[  328.979651] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  328.980208] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  328.980685] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  328.981129] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  328.981609] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  328.982126] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  328.982504] br_dev_delete (net/bridge/br_if.c:396) 
[  328.982814] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  328.983217] cleanup_net (net/core/net_namespace.c:630) 
[  328.983644] ? process_one_work (kernel/workqueue.c:2606) 
[  328.984021] process_one_work (kernel/workqueue.c:2633) 
[  328.984338] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  328.984635] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  328.985071] kthread (kernel/kthread.c:388) 
[  328.985484] ? __pfx_kthread (kernel/kthread.c:341) 
[  328.985983] ret_from_fork (arch/x86/kernel/process.c:147) 
[  328.986328] ? __pfx_kthread (kernel/kthread.c:341) 
[  328.986718] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  329.120142] ------------[ cut here ]------------
| [  329.120626] sysfs group 'bridge' not found for kobject 'br0'
| [  329.121188] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  329.122030] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  329.123672] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  329.124786] Workqueue: netns cleanup_net
[  329.125184] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 329.125668] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  329.127480] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  329.128000] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  329.128695] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  329.129456] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  329.130194] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3836610
[  329.130630] R13: ffffae1e40063e08 R14: ffff9bbec3836b80 R15: ffff9bbec3960050
[  329.131133] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  329.131541] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  329.131855] CR2: 00007f436cbe4000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  329.132263] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  329.132753] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  329.133440] PKRU: 55555554
[  329.133650] Call Trace:
[  329.133799]  <TASK>
[  329.133938] ? __warn (kernel/panic.c:677) 
[  329.134188] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  329.134574] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  329.134862] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  329.135200] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  329.135565] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  329.135993] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  329.136362] br_dev_delete (net/bridge/br_if.c:396) 
[  329.136717] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  329.137137] cleanup_net (net/core/net_namespace.c:630) 
[  329.137470] ? process_one_work (kernel/workqueue.c:2606) 
[  329.137925] process_one_work (kernel/workqueue.c:2633) 
[  329.138289] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  329.138666] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  329.139100] kthread (kernel/kthread.c:388) 
[  329.139478] ? __pfx_kthread (kernel/kthread.c:341) 
[  329.139886] ret_from_fork (arch/x86/kernel/process.c:147) 
[  329.140229] ? __pfx_kthread (kernel/kthread.c:341) 
[  329.140619] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  338.260182] ------------[ cut here ]------------
| [  338.260804] sysfs group 'bridge' not found for kobject 'br0'
| [  338.261589] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  338.262365] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  338.264139] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  338.265350] Workqueue: netns cleanup_net
[  338.265798] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 338.266297] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  338.268066] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  338.268547] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  338.269152] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  338.269772] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  338.270447] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50ee610
[  338.271085] R13: ffffae1e40063e08 R14: ffff9bbec50eeb80 R15: ffff9bbec5011750
[  338.271507] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  338.272027] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  338.272326] CR2: 00007f838a449000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  338.272691] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  338.273062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  338.273426] PKRU: 55555554
[  338.273572] Call Trace:
[  338.273706]  <TASK>
[  338.273826] ? __warn (kernel/panic.c:677) 
[  338.274009] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.274254] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  338.274453] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  338.274641] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  338.274945] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  338.275248] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.275557] br_dev_delete (net/bridge/br_if.c:396) 
[  338.275833] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  338.276187] cleanup_net (net/core/net_namespace.c:630) 
[  338.276474] ? process_one_work (kernel/workqueue.c:2606) 
[  338.276801] process_one_work (kernel/workqueue.c:2633) 
[  338.277131] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  338.277428] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  338.277763] kthread (kernel/kthread.c:388) 
[  338.278022] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.278320] ret_from_fork (arch/x86/kernel/process.c:147) 
[  338.278604] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.278898] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  338.394118] ------------[ cut here ]------------
| [  338.394671] sysfs group 'bridge' not found for kobject 'br0'
| [  338.395285] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  338.396110] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  338.397992] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  338.399221] Workqueue: netns cleanup_net
[  338.399665] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 338.400187] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  338.402426] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  338.403181] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  338.404137] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  338.405166] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  338.406151] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a6610
[  338.407143] R13: ffffae1e40063e08 R14: ffff9bbec52a6b80 R15: ffff9bbec3960050
[  338.408182] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  338.408888] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  338.409561] CR2: 00007f17acf9b000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  338.410165] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  338.410528] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  338.411138] PKRU: 55555554
[  338.411387] Call Trace:
[  338.411603]  <TASK>
[  338.411819] ? __warn (kernel/panic.c:677) 
[  338.412199] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.412655] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  338.412899] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  338.413242] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  338.413600] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  338.414013] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.414245] br_dev_delete (net/bridge/br_if.c:396) 
[  338.414485] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  338.414813] cleanup_net (net/core/net_namespace.c:630) 
[  338.415160] ? process_one_work (kernel/workqueue.c:2606) 
[  338.415547] process_one_work (kernel/workqueue.c:2633) 
[  338.415911] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  338.416315] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  338.416731] kthread (kernel/kthread.c:388) 
[  338.417083] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.417438] ret_from_fork (arch/x86/kernel/process.c:147) 
[  338.417780] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.418162] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  338.422936] ------------[ cut here ]------------
| [  338.423377] sysfs group 'bridge' not found for kobject 'br0'
| [  338.423916] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  338.424330] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  338.425335] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  338.426042] Workqueue: netns cleanup_net
[  338.426403] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 338.426884] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  338.428187] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  338.428612] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  338.429238] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  338.429883] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  338.430572] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50e8610
[  338.431295] R13: ffffae1e40063e08 R14: ffff9bbec50e8b80 R15: ffff9bbec3960050
[  338.431924] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  338.432670] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  338.433193] CR2: 00007f17acf9b000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  338.433811] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  338.434510] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  338.435165] PKRU: 55555554
[  338.435413] Call Trace:
[  338.435659]  <TASK>
[  338.435917] ? __warn (kernel/panic.c:677) 
[  338.436246] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.436639] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  338.437016] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  338.437366] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  338.437718] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  338.438126] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.438537] br_dev_delete (net/bridge/br_if.c:396) 
[  338.438918] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  338.439353] cleanup_net (net/core/net_namespace.c:630) 
[  338.439851] ? process_one_work (kernel/workqueue.c:2606) 
[  338.440254] process_one_work (kernel/workqueue.c:2633) 
[  338.440588] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  338.440956] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  338.441307] kthread (kernel/kthread.c:388) 
[  338.441644] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.442019] ret_from_fork (arch/x86/kernel/process.c:147) 
[  338.442377] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.442697] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  338.573191] ------------[ cut here ]------------
| [  338.573650] sysfs group 'bridge' not found for kobject 'br0'
| [  338.574379] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  338.575343] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  338.576945] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  338.578014] Workqueue: netns cleanup_net
[  338.578354] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 338.578837] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  338.580560] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  338.581058] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  338.581757] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  338.582422] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  338.583064] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec1936610
[  338.583705] R13: ffffae1e40063e08 R14: ffff9bbec1936b80 R15: ffff9bbec3965c50
[  338.584379] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  338.585215] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  338.585729] CR2: 00007f17acf9b000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  338.586337] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  338.587078] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  338.587745] PKRU: 55555554
[  338.588019] Call Trace:
[  338.588260]  <TASK>
[  338.588490] ? __warn (kernel/panic.c:677) 
[  338.588836] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.589208] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  338.589404] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  338.589647] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  338.589910] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  338.590240] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  338.590458] br_dev_delete (net/bridge/br_if.c:396) 
[  338.590658] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  338.590891] cleanup_net (net/core/net_namespace.c:630) 
[  338.591091] ? process_one_work (kernel/workqueue.c:2606) 
[  338.591313] process_one_work (kernel/workqueue.c:2633) 
[  338.591532] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  338.591731] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  338.591985] kthread (kernel/kthread.c:388) 
[  338.592155] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.592352] ret_from_fork (arch/x86/kernel/process.c:147) 
[  338.592545] ? __pfx_kthread (kernel/kthread.c:341) 
[  338.592752] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  347.724160] ------------[ cut here ]------------
| [  347.724656] sysfs group 'bridge' not found for kobject 'br0'
| [  347.725228] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  347.726174] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  347.727791] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  347.728860] Workqueue: netns cleanup_net
[  347.729241] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 347.729839] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  347.731703] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  347.732345] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  347.733137] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  347.733791] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  347.734421] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50e8610
[  347.735072] R13: ffffae1e40063e08 R14: ffff9bbec50e8b80 R15: ffff9bbec5010050
[  347.735696] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  347.736393] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  347.736836] CR2: 00007ff045b9c270 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  347.737428] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  347.737802] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  347.738216] PKRU: 55555554
[  347.738418] Call Trace:
[  347.738559]  <TASK>
[  347.738681] ? __warn (kernel/panic.c:677) 
[  347.738863] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  347.739119] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  347.739325] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  347.739519] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  347.739730] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  347.739974] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  347.740216] br_dev_delete (net/bridge/br_if.c:396) 
[  347.740414] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  347.740661] cleanup_net (net/core/net_namespace.c:630) 
[  347.740864] ? process_one_work (kernel/workqueue.c:2606) 
[  347.741111] process_one_work (kernel/workqueue.c:2633) 
[  347.741333] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  347.741543] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  347.741785] kthread (kernel/kthread.c:388) 
[  347.741979] ? __pfx_kthread (kernel/kthread.c:341) 
[  347.742191] ret_from_fork (arch/x86/kernel/process.c:147) 
[  347.742393] ? __pfx_kthread (kernel/kthread.c:341) 
[  347.742602] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  347.855092] ------------[ cut here ]------------
| [  347.855556] sysfs group 'bridge' not found for kobject 'br0'
| [  347.856050] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  347.856812] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  347.858239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  347.859191] Workqueue: netns cleanup_net
[  347.859546] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 347.859963] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  347.860978] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  347.861271] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  347.861818] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  347.862249] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  347.862610] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b20610
[  347.862980] R13: ffffae1e40063e08 R14: ffff9bbec3b20b80 R15: ffff9bbec3965c50
[  347.863395] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  347.863997] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  347.864462] CR2: 00007fa1868f6000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  347.864831] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  347.865349] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  347.865893] PKRU: 55555554
[  347.866133] Call Trace:
[  347.866378]  <TASK>
[  347.866578] ? __warn (kernel/panic.c:677) 
[  347.866867] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  347.867244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  347.867574] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  347.867884] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  347.868235] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  347.868630] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  347.868993] br_dev_delete (net/bridge/br_if.c:396) 
[  347.869324] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  347.869725] cleanup_net (net/core/net_namespace.c:630) 
[  347.870058] ? process_one_work (kernel/workqueue.c:2606) 
[  347.870426] process_one_work (kernel/workqueue.c:2633) 
[  347.870763] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  347.871090] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  347.871497] kthread (kernel/kthread.c:388) 
[  347.871817] ? __pfx_kthread (kernel/kthread.c:341) 
[  347.872150] ret_from_fork (arch/x86/kernel/process.c:147) 
[  347.872494] ? __pfx_kthread (kernel/kthread.c:341) 
[  347.872834] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  347.877102] ------------[ cut here ]------------
| [  347.877402] sysfs group 'bridge' not found for kobject 'br0'
| [  347.877741] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  347.878204] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  347.879171] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  347.879763] Workqueue: netns cleanup_net
[  347.879998] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 347.880284] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  347.881239] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  347.881542] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  347.881943] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  347.882318] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  347.882706] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec50ee610
[  347.883119] R13: ffffae1e40063e08 R14: ffff9bbec50eeb80 R15: ffff9bbec3965c50
[  347.883502] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  347.883935] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  347.884254] CR2: 0000555b8ad16dec CR3: 00000000026cc002 CR4: 0000000000770ef0
[  347.884636] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  347.885041] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  347.885421] PKRU: 55555554
[  347.885592] Call Trace:
[  347.885764]  <TASK>
[  347.885911] ? __warn (kernel/panic.c:677) 
[  347.886099] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  347.886365] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  347.886597] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  347.886848] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  347.887092] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  347.887358] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  347.887632] br_dev_delete (net/bridge/br_if.c:396) 
[  347.887869] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  347.888151] cleanup_net (net/core/net_namespace.c:630) 
[  347.888387] ? process_one_work (kernel/workqueue.c:2606) 
[  347.888634] process_one_work (kernel/workqueue.c:2633) 
[  347.888885] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  347.889138] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  347.889427] kthread (kernel/kthread.c:388) 
[  347.889632] ? __pfx_kthread (kernel/kthread.c:341) 
[  347.889868] ret_from_fork (arch/x86/kernel/process.c:147) 
[  347.890115] ? __pfx_kthread (kernel/kthread.c:341) 
[  347.890325] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  347.998125] ------------[ cut here ]------------
| [  347.998402] sysfs group 'bridge' not found for kobject 'br0'
| [  347.998737] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  347.999189] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  348.000149] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  348.000776] Workqueue: netns cleanup_net
[  348.001029] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 348.001314] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  348.002333] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  348.002652] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  348.003076] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  348.003492] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  348.003914] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3b26610
[  348.004304] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffff9bbec3962e50
[  348.004688] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  348.005131] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  348.005442] CR2: 0000555b8ad16dec CR3: 00000000026cc002 CR4: 0000000000770ef0
[  348.005830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  348.006225] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  348.006653] PKRU: 55555554
[  348.006829] Call Trace:
[  348.007023]  <TASK>
[  348.007187] ? __warn (kernel/panic.c:677) 
[  348.007394] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  348.007626] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  348.007880] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  348.008109] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  348.008364] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  348.008623] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  348.008858] br_dev_delete (net/bridge/br_if.c:396) 
[  348.009107] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  348.009383] cleanup_net (net/core/net_namespace.c:630) 
[  348.009633] ? process_one_work (kernel/workqueue.c:2606) 
[  348.009909] process_one_work (kernel/workqueue.c:2633) 
[  348.010142] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  348.010400] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  348.010684] kthread (kernel/kthread.c:388) 
[  348.010896] ? __pfx_kthread (kernel/kthread.c:341) 
[  348.011133] ret_from_fork (arch/x86/kernel/process.c:147) 
[  348.011396] ? __pfx_kthread (kernel/kthread.c:341) 
[  348.011645] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  357.014165] ------------[ cut here ]------------
| [  357.014625] sysfs group 'bridge' not found for kobject 'br0'
| [  357.015100] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  357.015701] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  357.017226] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  357.018298] Workqueue: netns cleanup_net
[  357.018660] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 357.019121] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  357.020862] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  357.021350] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  357.022010] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  357.022644] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  357.023316] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39be610
[  357.023982] R13: ffffae1e40063e08 R14: ffff9bbec39beb80 R15: ffff9bbec5012e50
[  357.024689] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  357.025532] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  357.026106] CR2: 00007f314eafa000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  357.026708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  357.027432] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  357.028086] PKRU: 55555554
[  357.028401] Call Trace:
[  357.028595]  <TASK>
[  357.028899] ? __warn (kernel/panic.c:677) 
[  357.029212] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.029565] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  357.029929] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  357.030266] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  357.030625] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  357.031110] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.031501] br_dev_delete (net/bridge/br_if.c:396) 
[  357.031735] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  357.032032] cleanup_net (net/core/net_namespace.c:630) 
[  357.032270] ? process_one_work (kernel/workqueue.c:2606) 
[  357.032564] process_one_work (kernel/workqueue.c:2633) 
[  357.032860] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  357.033097] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  357.033424] kthread (kernel/kthread.c:388) 
[  357.033739] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.033973] ret_from_fork (arch/x86/kernel/process.c:147) 
[  357.034166] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.034363] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  357.145284] ------------[ cut here ]------------
| [  357.145701] sysfs group 'bridge' not found for kobject 'br0'
| [  357.146213] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  357.146861] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  357.148300] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  357.149205] Workqueue: netns cleanup_net
[  357.149555] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 357.150002] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  357.151470] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  357.151991] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  357.152589] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  357.153185] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  357.153763] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec39b8610
[  357.154350] R13: ffffae1e40063e08 R14: ffff9bbec39b8b80 R15: ffff9bbec3962e50
[  357.154945] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  357.155611] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  357.156114] CR2: 00007f6840148d40 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  357.156685] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  357.157285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  357.157874] PKRU: 55555554
[  357.158147] Call Trace:
[  357.158371]  <TASK>
[  357.158593] ? __warn (kernel/panic.c:677) 
[  357.158897] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.159281] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  357.159601] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  357.159936] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  357.160298] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  357.160672] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.161041] br_dev_delete (net/bridge/br_if.c:396) 
[  357.161374] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  357.161778] cleanup_net (net/core/net_namespace.c:630) 
[  357.162126] ? process_one_work (kernel/workqueue.c:2606) 
[  357.162476] process_one_work (kernel/workqueue.c:2633) 
[  357.162840] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  357.163193] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  357.163571] kthread (kernel/kthread.c:388) 
[  357.163847] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.164210] ret_from_fork (arch/x86/kernel/process.c:147) 
[  357.164542] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.164869] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  357.169003] ------------[ cut here ]------------
| [  357.169377] sysfs group 'bridge' not found for kobject 'br0'
| [  357.169857] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  357.170501] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  357.171886] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  357.172816] Workqueue: netns cleanup_net
[  357.173189] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 357.173609] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  357.175047] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  357.175497] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  357.176107] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  357.176701] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  357.177287] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec52a4610
[  357.177877] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec3962e50
[  357.178495] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  357.179164] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  357.179632] CR2: 00007f6840148d40 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  357.180228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  357.180824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  357.181425] PKRU: 55555554
[  357.181690] Call Trace:
[  357.181950]  <TASK>
[  357.182183] ? __warn (kernel/panic.c:677) 
[  357.182489] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.182849] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  357.183202] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  357.183540] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  357.183887] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  357.184271] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.184651] br_dev_delete (net/bridge/br_if.c:396) 
[  357.185007] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  357.185396] cleanup_net (net/core/net_namespace.c:630) 
[  357.185714] ? process_one_work (kernel/workqueue.c:2606) 
[  357.186098] process_one_work (kernel/workqueue.c:2633) 
[  357.186479] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  357.186819] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  357.187200] kthread (kernel/kthread.c:388) 
[  357.187495] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.187854] ret_from_fork (arch/x86/kernel/process.c:147) 
[  357.188192] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.188520] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  357.331124] ------------[ cut here ]------------
| [  357.331418] sysfs group 'bridge' not found for kobject 'br0'
| [  357.331793] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  357.332272] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  357.333244] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  357.333865] Workqueue: netns cleanup_net
[  357.334126] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 357.334412] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  357.335442] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  357.335826] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffdfff
[  357.336333] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  357.336752] RBP: 0000000000000000 R08: ffffffff99d78508 R09: 00000000ffffdfff
[  357.337154] R10: ffffffff99c98520 R11: ffffffff99d48520 R12: ffff9bbec3834610
[  357.337533] R13: ffffae1e40063e08 R14: ffff9bbec3834b80 R15: ffff9bbec3965c50
[  357.337952] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  357.338399] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  357.338729] CR2: 00007f6840148d40 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  357.339118] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  357.339517] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  357.339936] PKRU: 55555554
[  357.340108] Call Trace:
[  357.340258]  <TASK>
[  357.340405] ? __warn (kernel/panic.c:677) 
[  357.340607] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.340861] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  357.341083] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  357.341298] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  357.341534] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  357.341817] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  357.342063] br_dev_delete (net/bridge/br_if.c:396) 
[  357.342288] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  357.342553] cleanup_net (net/core/net_namespace.c:630) 
[  357.342790] ? process_one_work (kernel/workqueue.c:2606) 
[  357.343037] process_one_work (kernel/workqueue.c:2633) 
[  357.343279] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  357.343513] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  357.343773] kthread (kernel/kthread.c:388) 
[  357.343976] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.344206] ret_from_fork (arch/x86/kernel/process.c:147) 
[  357.344434] ? __pfx_kthread (kernel/kthread.c:341) 
[  357.344665] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  365.674124] ------------[ cut here ]------------
| [  365.674542] sysfs group 'bridge' not found for kobject 'br0'
| [  365.675017] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  365.675688] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  365.677188] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  365.678119] Workqueue: netns cleanup_net
[  365.678423] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 365.678670] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  365.679785] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  365.680217] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe00e
[  365.680580] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  365.680955] RBP: 0000000000000000 R08: ffffffff99d48670 R09: 00000000ffffe00e
[  365.681391] R10: ffffffff99c98520 R11: ffffffff99d48670 R12: ffff9bbec3834610
[  365.682135] R13: ffffae1e40063e08 R14: ffff9bbec3834b80 R15: ffff9bbec3960050
[  365.682672] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  365.683448] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.684001] CR2: 00007f452ab99270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  365.684693] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  365.685354] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  365.686035] PKRU: 55555554
[  365.686304] Call Trace:
[  365.686597]  <TASK>
[  365.686822] ? __warn (kernel/panic.c:677) 
[  365.687145] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.687578] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  365.687987] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  365.688364] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  365.688807] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  365.689264] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.689641] br_dev_delete (net/bridge/br_if.c:396) 
[  365.690069] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  365.690493] cleanup_net (net/core/net_namespace.c:630) 
[  365.690807] ? process_one_work (kernel/workqueue.c:2606) 
[  365.691242] process_one_work (kernel/workqueue.c:2633) 
[  365.691582] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  365.691964] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  365.692345] kthread (kernel/kthread.c:388) 
[  365.692643] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.692848] ret_from_fork (arch/x86/kernel/process.c:147) 
[  365.693069] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.693283] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  365.794087] ------------[ cut here ]------------
| [  365.794494] sysfs group 'bridge' not found for kobject 'br0'
| [  365.795031] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  365.795657] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  365.796776] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  365.797533] Workqueue: netns cleanup_net
[  365.797746] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 365.798004] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  365.799184] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  365.799567] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe045
[  365.800015] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  365.800634] RBP: 0000000000000000 R08: ffffffff99d48b98 R09: 00000000ffffe045
[  365.801303] R10: ffffffff99c98520 R11: ffffffff99d48b98 R12: ffff9bbec3b5e610
[  365.802013] R13: ffffae1e40063e08 R14: ffff9bbec3b5eb80 R15: ffff9bbec3965c50
[  365.802669] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  365.803432] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.803962] CR2: 00007f452ab99270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  365.804574] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  365.805236] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  365.805910] PKRU: 55555554
[  365.806181] Call Trace:
[  365.806400]  <TASK>
[  365.806621] ? __warn (kernel/panic.c:677) 
[  365.806953] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.807332] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  365.807598] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  365.807893] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  365.808241] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  365.808622] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.808999] br_dev_delete (net/bridge/br_if.c:396) 
[  365.809374] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  365.809715] cleanup_net (net/core/net_namespace.c:630) 
[  365.810088] ? process_one_work (kernel/workqueue.c:2606) 
[  365.810434] process_one_work (kernel/workqueue.c:2633) 
[  365.810769] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  365.811146] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  365.811555] kthread (kernel/kthread.c:388) 
[  365.811937] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.812144] ret_from_fork (arch/x86/kernel/process.c:147) 
[  365.812338] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.812569] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  365.815890] ------------[ cut here ]------------
| [  365.816315] sysfs group 'bridge' not found for kobject 'br0'
| [  365.816796] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  365.817317] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  365.818842] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  365.819875] Workqueue: netns cleanup_net
[  365.820242] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 365.820684] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  365.822278] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  365.822760] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe076
[  365.823455] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  365.824098] RBP: 0000000000000000 R08: ffffffff99d49030 R09: 00000000ffffe076
[  365.824457] R10: ffffffff99c98520 R11: ffffffff99d49030 R12: ffff9bbec3832610
[  365.824886] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffff9bbec3965c50
[  365.825271] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  365.825688] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.826151] CR2: 00007f452ab99270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  365.826767] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  365.827175] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  365.827756] PKRU: 55555554
[  365.828026] Call Trace:
[  365.828252]  <TASK>
[  365.828460] ? __warn (kernel/panic.c:677) 
[  365.828751] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.829145] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  365.829461] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  365.829812] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  365.830187] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  365.830599] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.830982] br_dev_delete (net/bridge/br_if.c:396) 
[  365.831319] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  365.831767] cleanup_net (net/core/net_namespace.c:630) 
[  365.832098] ? process_one_work (kernel/workqueue.c:2606) 
[  365.832445] process_one_work (kernel/workqueue.c:2633) 
[  365.832806] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  365.833130] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  365.833537] kthread (kernel/kthread.c:388) 
[  365.833868] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.834318] ret_from_fork (arch/x86/kernel/process.c:147) 
[  365.834669] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.835065] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  365.944198] ------------[ cut here ]------------
| [  365.944801] sysfs group 'bridge' not found for kobject 'br0'
| [  365.945516] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  365.946556] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  365.947916] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  365.948511] Workqueue: netns cleanup_net
[  365.948876] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 365.949378] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  365.951338] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  365.952005] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe0aa
[  365.952859] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  365.953659] RBP: 0000000000000000 R08: ffffffff99d49510 R09: 00000000ffffe0aa
[  365.954492] R10: ffffffff99c98520 R11: ffffffff99d49510 R12: ffff9bbec3b5c610
[  365.955303] R13: ffffae1e40063e08 R14: ffff9bbec3b5cb80 R15: ffff9bbec3961750
[  365.956178] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  365.957128] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.957784] CR2: 00007fb446d23000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  365.958635] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  365.959478] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  365.960225] PKRU: 55555554
[  365.960537] Call Trace:
[  365.960844]  <TASK>
[  365.961061] ? __warn (kernel/panic.c:677) 
[  365.961252] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.961469] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  365.961702] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  365.961922] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  365.962235] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  365.962461] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  365.962924] br_dev_delete (net/bridge/br_if.c:396) 
[  365.963137] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  365.963365] cleanup_net (net/core/net_namespace.c:630) 
[  365.963570] ? process_one_work (kernel/workqueue.c:2606) 
[  365.963937] process_one_work (kernel/workqueue.c:2633) 
[  365.964390] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  365.964623] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  365.964929] kthread (kernel/kthread.c:388) 
[  365.965250] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.965699] ret_from_fork (arch/x86/kernel/process.c:147) 
[  365.966123] ? __pfx_kthread (kernel/kthread.c:341) 
[  365.966573] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  373.892223] ------------[ cut here ]------------
| [  373.892625] sysfs group 'bridge' not found for kobject 'br0'
| [  373.893132] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  373.893885] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  373.894917] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  373.895688] Workqueue: netns cleanup_net
[  373.895915] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 373.896166] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  373.897359] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  373.897749] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe0f8
[  373.898387] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  373.899099] RBP: 0000000000000000 R08: ffffffff99d49c60 R09: 00000000ffffe0f8
[  373.899800] R10: ffffffff99c98520 R11: ffffffff99d49c60 R12: ffff9bbec538c610
[  373.900494] R13: ffffae1e40063e08 R14: ffff9bbec538cb80 R15: ffff9bbec5010050
[  373.901200] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  373.902041] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  373.902578] CR2: 0000555b8c6bccc8 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  373.903238] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  373.903885] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  373.904449] PKRU: 55555554
[  373.904688] Call Trace:
[  373.904894]  <TASK>
[  373.905100] ? __warn (kernel/panic.c:677) 
[  373.905395] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  373.905770] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  373.906084] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  373.906389] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  373.906665] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  373.907046] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  373.907390] br_dev_delete (net/bridge/br_if.c:396) 
[  373.907642] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  373.907874] cleanup_net (net/core/net_namespace.c:630) 
[  373.908097] ? process_one_work (kernel/workqueue.c:2606) 
[  373.908345] process_one_work (kernel/workqueue.c:2633) 
[  373.908562] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  373.908786] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  373.909014] kthread (kernel/kthread.c:388) 
[  373.909184] ? __pfx_kthread (kernel/kthread.c:341) 
[  373.909428] ret_from_fork (arch/x86/kernel/process.c:147) 
[  373.909711] ? __pfx_kthread (kernel/kthread.c:341) 
[  373.909956] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  374.034109] ------------[ cut here ]------------
| [  374.034581] sysfs group 'bridge' not found for kobject 'br0'
| [  374.035128] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  374.035883] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  374.037517] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  374.038534] Workqueue: netns cleanup_net
[  374.038908] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 374.039316] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  374.040844] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  374.041288] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe132
[  374.041786] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  374.042176] RBP: 0000000000000000 R08: ffffffff99d4a1d0 R09: 00000000ffffe132
[  374.042584] R10: ffffffff99c98520 R11: ffffffff99d4a1d0 R12: ffff9bbec52a6610
[  374.043106] R13: ffffae1e40063e08 R14: ffff9bbec52a6b80 R15: ffffffff9b278f90
[  374.043479] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  374.043966] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  374.044454] CR2: 0000555b8c6bccc8 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  374.044856] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  374.045484] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  374.046256] PKRU: 55555554
[  374.046545] Call Trace:
[  374.046853]  <TASK>
[  374.047064] ? __warn (kernel/panic.c:677) 
[  374.047382] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  374.047817] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  374.048206] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  374.048577] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  374.048977] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  374.049423] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  374.049845] br_dev_delete (net/bridge/br_if.c:396) 
[  374.050220] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  374.050696] cleanup_net (net/core/net_namespace.c:630) 
[  374.051079] ? process_one_work (kernel/workqueue.c:2606) 
[  374.051500] process_one_work (kernel/workqueue.c:2633) 
[  374.051895] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  374.052332] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  374.052769] kthread (kernel/kthread.c:388) 
[  374.053057] ? __pfx_kthread (kernel/kthread.c:341) 
[  374.053432] ret_from_fork (arch/x86/kernel/process.c:147) 
[  374.053747] ? __pfx_kthread (kernel/kthread.c:341) 
[  374.054140] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  374.057978] ------------[ cut here ]------------
| [  374.058219] sysfs group 'bridge' not found for kobject 'br0'
| [  374.058527] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  374.058950] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  374.059835] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  374.060422] Workqueue: netns cleanup_net
[  374.060633] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 374.060888] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  374.061851] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  374.062133] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe163
[  374.062508] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  374.062877] RBP: 0000000000000000 R08: ffffffff99d4a668 R09: 00000000ffffe163
[  374.063253] R10: ffffffff99c98520 R11: ffffffff99d4a668 R12: ffff9bbec52a0610
[  374.063620] R13: ffffae1e40063e08 R14: ffff9bbec52a0b80 R15: ffffffff9b278f90
[  374.064005] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  374.064433] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  374.064734] CR2: 0000555b8c6bccc8 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  374.065114] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  374.065486] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  374.065855] PKRU: 55555554
[  374.066011] Call Trace:
[  374.066150]  <TASK>
[  374.066274] ? __warn (kernel/panic.c:677) 
[  374.066449] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  374.066669] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  374.066872] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  374.067062] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  374.067267] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  374.067489] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  374.067711] br_dev_delete (net/bridge/br_if.c:396) 
[  374.067910] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  374.068141] cleanup_net (net/core/net_namespace.c:630) 
[  374.068334] ? process_one_work (kernel/workqueue.c:2606) 
[  374.068557] process_one_work (kernel/workqueue.c:2633) 
[  374.068773] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  374.068977] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  374.069202] kthread (kernel/kthread.c:388) 
[  374.069372] ? __pfx_kthread (kernel/kthread.c:341) 
[  374.069572] ret_from_fork (arch/x86/kernel/process.c:147) 
[  374.069764] ? __pfx_kthread (kernel/kthread.c:341) 
[  374.069970] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  374.072607] ------------[ cut here ]------------
| [  374.072850] sysfs group 'bridge' not found for kobject 'br0'
| [  374.073171] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  374.073605] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  374.074525] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  374.075124] Workqueue: netns cleanup_net
[  374.075336] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 374.075602] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  374.076541] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  374.076815] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe194
[  374.077183] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  374.077546] RBP: 0000000000000000 R08: ffffffff99d4ab00 R09: 00000000ffffe194
[  374.077922] R10: ffffffff99c98520 R11: ffffffff99d4ab00 R12: ffff9bbec3b22610
[  374.078282] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffffffff9b278f90
[  374.078654] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  374.079068] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  374.079374] CR2: 0000555b8c6bccc8 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  374.079740] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  374.080115] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  374.080523] PKRU: 55555554
[  374.080674] Call Trace:
[  374.080814]  <TASK>
[  374.080937] ? __warn (kernel/panic.c:677) 
[  374.081114] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  374.081340] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  374.081543] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  374.081993] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  374.082205] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  374.082433] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  374.082670] br_dev_delete (net/bridge/br_if.c:396) 
[  374.082860] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  374.083105] cleanup_net (net/core/net_namespace.c:630) 
[  374.083304] ? process_one_work (kernel/workqueue.c:2606) 
[  374.083526] process_one_work (kernel/workqueue.c:2633) 
[  374.083747] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  374.083954] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  374.084203] kthread (kernel/kthread.c:388) 
[  374.084374] ? __pfx_kthread (kernel/kthread.c:341) 
[  374.084580] ret_from_fork (arch/x86/kernel/process.c:147) 
[  374.084772] ? __pfx_kthread (kernel/kthread.c:341) 
[  374.084975] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  382.336162] ------------[ cut here ]------------
| [  382.336644] sysfs group 'bridge' not found for kobject 'br0'
| [  382.337217] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  382.337972] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  382.339643] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  382.340805] Workqueue: netns cleanup_net
[  382.341189] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 382.341694] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  382.343517] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  382.344046] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe1e2
[  382.344844] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  382.345440] RBP: 0000000000000000 R08: ffffffff99d4b250 R09: 00000000ffffe1e2
[  382.346089] R10: ffffffff99c98520 R11: ffffffff99d4b250 R12: ffff9bbec538a610
[  382.346732] R13: ffffae1e40063e08 R14: ffff9bbec538ab80 R15: ffff9bbec3960050
[  382.347401] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  382.348107] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  382.348603] CR2: 0000555b8ad16dec CR3: 00000000026cc002 CR4: 0000000000770ef0
[  382.349276] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  382.349839] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  382.350244] PKRU: 55555554
[  382.350390] Call Trace:
[  382.350558]  <TASK>
[  382.350685] ? __warn (kernel/panic.c:677) 
[  382.350866] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.351094] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  382.351311] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  382.351498] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  382.351720] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  382.351964] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.352192] br_dev_delete (net/bridge/br_if.c:396) 
[  382.352389] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  382.352628] cleanup_net (net/core/net_namespace.c:630) 
[  382.352824] ? process_one_work (kernel/workqueue.c:2606) 
[  382.353054] process_one_work (kernel/workqueue.c:2633) 
[  382.353278] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  382.353482] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  382.353716] kthread (kernel/kthread.c:388) 
[  382.353887] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.354104] ret_from_fork (arch/x86/kernel/process.c:147) 
[  382.354297] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.354501] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  382.506153] ------------[ cut here ]------------
| [  382.506713] sysfs group 'bridge' not found for kobject 'br0'
| [  382.507431] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  382.508327] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  382.509712] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  382.510658] Workqueue: netns cleanup_net
[  382.510940] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 382.511265] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  382.512817] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  382.513288] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe21c
[  382.514005] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  382.514759] RBP: 0000000000000000 R08: ffffffff99d4b7c0 R09: 00000000ffffe21c
[  382.515581] R10: ffffffff99c98520 R11: ffffffff99d4b7c0 R12: ffff9bbec52a0610
[  382.516358] R13: ffffae1e40063e08 R14: ffff9bbec52a0b80 R15: ffffffff9b278f90
[  382.517139] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  382.518023] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  382.518646] CR2: 00007f1268f9a000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  382.519389] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  382.520165] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  382.520876] PKRU: 55555554
[  382.521130] Call Trace:
[  382.521395]  <TASK>
[  382.521637] ? __warn (kernel/panic.c:677) 
[  382.521983] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.522404] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  382.522826] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  382.523160] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  382.523576] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  382.523979] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.524403] br_dev_delete (net/bridge/br_if.c:396) 
[  382.524782] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  382.525123] cleanup_net (net/core/net_namespace.c:630) 
[  382.525378] ? process_one_work (kernel/workqueue.c:2606) 
[  382.525687] process_one_work (kernel/workqueue.c:2633) 
[  382.526052] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  382.526314] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  382.526611] kthread (kernel/kthread.c:388) 
[  382.526834] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.527109] ret_from_fork (arch/x86/kernel/process.c:147) 
[  382.527363] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.527621] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  382.530971] ------------[ cut here ]------------
| [  382.531286] sysfs group 'bridge' not found for kobject 'br0'
| [  382.531692] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  382.532239] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  382.533397] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  382.534160] Workqueue: netns cleanup_net
[  382.534430] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 382.534756] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  382.535983] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  382.536335] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe24d
[  382.536813] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  382.537297] RBP: 0000000000000000 R08: ffffffff99d4bc58 R09: 00000000ffffe24d
[  382.537770] R10: ffffffff99c98520 R11: ffffffff99d4bc58 R12: ffff9bbec52a6610
[  382.538251] R13: ffffae1e40063e08 R14: ffff9bbec52a6b80 R15: ffffffff9b278f90
[  382.538729] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  382.539279] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  382.539665] CR2: 00007f1268f9a000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  382.540148] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  382.540623] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  382.541105] PKRU: 55555554
[  382.541294] Call Trace:
[  382.541467]  <TASK>
[  382.541628] ? __warn (kernel/panic.c:677) 
[  382.541853] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.542148] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  382.542403] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  382.542645] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  382.542916] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  382.543208] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.543494] br_dev_delete (net/bridge/br_if.c:396) 
[  382.543742] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  382.544053] cleanup_net (net/core/net_namespace.c:630) 
[  382.544304] ? process_one_work (kernel/workqueue.c:2606) 
[  382.544586] process_one_work (kernel/workqueue.c:2633) 
[  382.544865] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  382.545133] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  382.545424] kthread (kernel/kthread.c:388) 
[  382.545643] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.545912] ret_from_fork (arch/x86/kernel/process.c:147) 
[  382.546160] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.546417] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  382.549765] ------------[ cut here ]------------
| [  382.550086] sysfs group 'bridge' not found for kobject 'br0'
| [  382.550477] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  382.551024] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  382.552194] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  382.552958] Workqueue: netns cleanup_net
[  382.553229] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 382.553557] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  382.554786] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  382.555149] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe27e
[  382.555625] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  382.556108] RBP: 0000000000000000 R08: ffffffff99d4c0f0 R09: 00000000ffffe27e
[  382.556584] R10: ffffffff99c98520 R11: ffffffff99d4c0f0 R12: ffff9bbec39b8610
[  382.557076] R13: ffffae1e40063e08 R14: ffff9bbec39b8b80 R15: ffffffff9b278f90
[  382.557554] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  382.558100] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  382.558489] CR2: 00007f1268f9a000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  382.558972] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  382.559449] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  382.559932] PKRU: 55555554
[  382.560126] Call Trace:
[  382.560300]  <TASK>
[  382.560453] ? __warn (kernel/panic.c:677) 
[  382.560680] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.560977] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  382.561234] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  382.561478] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  382.561751] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  382.562055] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  382.562344] br_dev_delete (net/bridge/br_if.c:396) 
[  382.562594] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  382.562895] cleanup_net (net/core/net_namespace.c:630) 
[  382.563159] ? process_one_work (kernel/workqueue.c:2606) 
[  382.563443] process_one_work (kernel/workqueue.c:2633) 
[  382.563726] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  382.563999] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  382.564294] kthread (kernel/kthread.c:388) 
[  382.564514] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.564774] ret_from_fork (arch/x86/kernel/process.c:147) 
[  382.565033] ? __pfx_kthread (kernel/kthread.c:341) 
[  382.565294] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  390.916364] ------------[ cut here ]------------
| [  390.916702] sysfs group 'bridge' not found for kobject 'br0'
| [  390.917030] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  390.917458] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  390.918351] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  390.918929] Workqueue: netns cleanup_net
[  390.919284] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 390.919739] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  390.921459] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  390.921942] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe2cc
[  390.922589] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  390.923128] RBP: 0000000000000000 R08: ffffffff99d4c840 R09: 00000000ffffe2cc
[  390.923708] R10: ffffffff99c98520 R11: ffffffff99d4c840 R12: ffff9bbec52a4610
[  390.924324] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec3960050
[  390.924965] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  390.925646] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  390.926131] CR2: 00007fdb75336270 CR3: 0000000006496005 CR4: 0000000000770ef0
[  390.926517] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  390.926920] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  390.927412] PKRU: 55555554
[  390.927576] Call Trace:
[  390.927714]  <TASK>
[  390.927867] ? __warn (kernel/panic.c:677) 
[  390.928186] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  390.928416] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  390.928634] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  390.928886] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  390.929281] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  390.929755] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  390.930053] br_dev_delete (net/bridge/br_if.c:396) 
[  390.930423] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  390.930951] cleanup_net (net/core/net_namespace.c:630) 
[  390.931424] ? process_one_work (kernel/workqueue.c:2606) 
[  390.931933] process_one_work (kernel/workqueue.c:2633) 
[  390.932469] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  390.932929] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  390.933485] kthread (kernel/kthread.c:388) 
[  390.933894] ? __pfx_kthread (kernel/kthread.c:341) 
[  390.934386] ret_from_fork (arch/x86/kernel/process.c:147) 
[  390.934856] ? __pfx_kthread (kernel/kthread.c:341) 
[  390.935329] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  391.045138] ------------[ cut here ]------------
| [  391.045608] sysfs group 'bridge' not found for kobject 'br0'
| [  391.046173] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  391.046986] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  391.048605] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  391.049575] Workqueue: netns cleanup_net
[  391.049922] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 391.050293] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  391.051816] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  391.052258] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe303
[  391.052806] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  391.053411] RBP: 0000000000000000 R08: ffffffff99d4cd68 R09: 00000000ffffe303
[  391.053917] R10: ffffffff99c98520 R11: ffffffff99d4cd68 R12: ffff9bbec38ee610
[  391.054320] R13: ffffae1e40063e08 R14: ffff9bbec38eeb80 R15: ffff9bbec5010050
[  391.054735] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  391.055277] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  391.055571] CR2: 00007fdb75034000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  391.055939] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  391.056532] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  391.057162] PKRU: 55555554
[  391.057337] Call Trace:
[  391.057568]  <TASK>
[  391.057771] ? __warn (kernel/panic.c:677) 
[  391.058064] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  391.058283] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  391.058584] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  391.058869] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  391.059218] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  391.059623] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  391.060013] br_dev_delete (net/bridge/br_if.c:396) 
[  391.060347] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  391.060765] cleanup_net (net/core/net_namespace.c:630) 
[  391.061108] ? process_one_work (kernel/workqueue.c:2606) 
[  391.061495] process_one_work (kernel/workqueue.c:2633) 
[  391.061877] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  391.062220] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  391.062614] kthread (kernel/kthread.c:388) 
[  391.062911] ? __pfx_kthread (kernel/kthread.c:341) 
[  391.063269] ret_from_fork (arch/x86/kernel/process.c:147) 
[  391.063618] ? __pfx_kthread (kernel/kthread.c:341) 
[  391.063993] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  391.067307] ------------[ cut here ]------------
| [  391.067643] sysfs group 'bridge' not found for kobject 'br0'
| [  391.068117] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  391.068599] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  391.070066] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  391.070990] Workqueue: netns cleanup_net
[  391.071302] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 391.071696] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  391.073231] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  391.073713] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe334
[  391.074333] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  391.074913] RBP: 0000000000000000 R08: ffffffff99d4d200 R09: 00000000ffffe334
[  391.075461] R10: ffffffff99c98520 R11: ffffffff99d4d200 R12: ffff9bbec538a610
[  391.076039] R13: ffffae1e40063e08 R14: ffff9bbec538ab80 R15: ffff9bbec5010050
[  391.076619] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  391.077226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  391.077713] CR2: 00007fdb75034000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  391.078225] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  391.078769] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  391.079334] PKRU: 55555554
[  391.079531] Call Trace:
[  391.079698]  <TASK>
[  391.079863] ? __warn (kernel/panic.c:677) 
[  391.080121] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  391.080437] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  391.080703] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  391.081008] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  391.081301] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  391.081627] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  391.082005] br_dev_delete (net/bridge/br_if.c:396) 
[  391.082200] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  391.082432] cleanup_net (net/core/net_namespace.c:630) 
[  391.082638] ? process_one_work (kernel/workqueue.c:2606) 
[  391.082860] process_one_work (kernel/workqueue.c:2633) 
[  391.083106] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  391.083306] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  391.083564] kthread (kernel/kthread.c:388) 
[  391.083747] ? __pfx_kthread (kernel/kthread.c:341) 
[  391.083950] ret_from_fork (arch/x86/kernel/process.c:147) 
[  391.084244] ? __pfx_kthread (kernel/kthread.c:341) 
[  391.084503] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  391.197169] ------------[ cut here ]------------
| [  391.197592] sysfs group 'bridge' not found for kobject 'br0'
| [  391.198096] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  391.198798] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  391.200402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  391.201071] Workqueue: netns cleanup_net
[  391.201283] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 391.201554] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  391.202646] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  391.203082] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe368
[  391.203475] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  391.204080] RBP: 0000000000000000 R08: ffffffff99d4d6e0 R09: 00000000ffffe368
[  391.204768] R10: ffffffff99c98520 R11: ffffffff99d4d6e0 R12: ffff9bbec538e610
[  391.205415] R13: ffffae1e40063e08 R14: ffff9bbec538eb80 R15: ffff9bbec2bf5c50
[  391.206042] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  391.206776] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  391.207383] CR2: 00007f9203b1c000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  391.207990] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  391.208631] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  391.209305] PKRU: 55555554
[  391.209547] Call Trace:
[  391.209769]  <TASK>
[  391.209970] ? __warn (kernel/panic.c:677) 
[  391.210288] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  391.210592] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  391.210918] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  391.211204] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  391.211544] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  391.211887] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  391.212202] br_dev_delete (net/bridge/br_if.c:396) 
[  391.212533] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  391.212856] cleanup_net (net/core/net_namespace.c:630) 
[  391.213180] ? process_one_work (kernel/workqueue.c:2606) 
[  391.213504] process_one_work (kernel/workqueue.c:2633) 
[  391.213887] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  391.214150] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  391.214376] kthread (kernel/kthread.c:388) 
[  391.214571] ? __pfx_kthread (kernel/kthread.c:341) 
[  391.214786] ret_from_fork (arch/x86/kernel/process.c:147) 
[  391.215023] ? __pfx_kthread (kernel/kthread.c:341) 
[  391.215239] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  399.372140] ------------[ cut here ]------------
| [  399.372403] sysfs group 'bridge' not found for kobject 'br0'
| [  399.372727] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  399.373189] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  399.374186] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  399.374871] Workqueue: netns cleanup_net
[  399.375140] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 399.375488] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  399.376514] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  399.376842] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe3b6
[  399.377264] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  399.377819] RBP: 0000000000000000 R08: ffffffff99d4de30 R09: 00000000ffffe3b6
[  399.378346] R10: ffffffff99c98520 R11: ffffffff99d4de30 R12: ffff9bbec2178610
[  399.378756] R13: ffffae1e40063e08 R14: ffff9bbec2178b80 R15: ffff9bbec2bf2e50
[  399.379194] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  399.379706] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  399.380152] CR2: 00007f8d4970c270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  399.380715] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  399.381292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  399.381842] PKRU: 55555554
[  399.382045] Call Trace:
[  399.382239]  <TASK>
[  399.382404] ? __warn (kernel/panic.c:677) 
[  399.382619] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.382896] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  399.383146] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  399.383363] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  399.383639] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  399.383909] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.384168] br_dev_delete (net/bridge/br_if.c:396) 
[  399.384387] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  399.384638] cleanup_net (net/core/net_namespace.c:630) 
[  399.384868] ? process_one_work (kernel/workqueue.c:2606) 
[  399.385136] process_one_work (kernel/workqueue.c:2633) 
[  399.385402] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  399.385646] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  399.385923] kthread (kernel/kthread.c:388) 
[  399.386150] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.386386] ret_from_fork (arch/x86/kernel/process.c:147) 
[  399.386626] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.386882] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  399.483144] ------------[ cut here ]------------
| [  399.483425] sysfs group 'bridge' not found for kobject 'br0'
| [  399.483754] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  399.484209] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  399.485140] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  399.485751] Workqueue: netns cleanup_net
[  399.485984] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 399.486239] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  399.487204] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  399.487503] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe3ed
[  399.487915] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  399.488358] RBP: 0000000000000000 R08: ffffffff99d4e358 R09: 00000000ffffe3ed
[  399.488735] R10: ffffffff99c98520 R11: ffffffff99d4e358 R12: ffff9bbec39ba610
[  399.489116] R13: ffffae1e40063e08 R14: ffff9bbec39bab80 R15: ffff9bbec2bf5c50
[  399.489488] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  399.489936] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  399.490285] CR2: 00007f8d4970c270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  399.490678] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  399.491077] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  399.491487] PKRU: 55555554
[  399.491659] Call Trace:
[  399.491824]  <TASK>
[  399.491977] ? __warn (kernel/panic.c:677) 
[  399.492172] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.492421] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  399.492672] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  399.492881] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  399.493117] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  399.493340] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.493555] br_dev_delete (net/bridge/br_if.c:396) 
[  399.493772] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  399.494063] cleanup_net (net/core/net_namespace.c:630) 
[  399.494275] ? process_one_work (kernel/workqueue.c:2606) 
[  399.494510] process_one_work (kernel/workqueue.c:2633) 
[  399.494758] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  399.495057] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  399.495332] kthread (kernel/kthread.c:388) 
[  399.495524] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.495730] ret_from_fork (arch/x86/kernel/process.c:147) 
[  399.495975] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.496235] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  399.499227] ------------[ cut here ]------------
| [  399.499501] sysfs group 'bridge' not found for kobject 'br0'
| [  399.499867] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  399.500359] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  399.501651] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  399.502465] Workqueue: netns cleanup_net
[  399.502793] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 399.503166] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  399.504441] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  399.504815] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe41e
[  399.505336] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  399.505848] RBP: 0000000000000000 R08: ffffffff99d4e7f0 R09: 00000000ffffe41e
[  399.506337] R10: ffffffff99c98520 R11: ffffffff99d4e7f0 R12: ffff9bbec39b8610
[  399.506810] R13: ffffae1e40063e08 R14: ffff9bbec39b8b80 R15: ffff9bbec2bf5c50
[  399.507299] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  399.507744] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  399.508086] CR2: 00007f8d4970c270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  399.508473] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  399.508861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  399.509260] PKRU: 55555554
[  399.509428] Call Trace:
[  399.509572]  <TASK>
[  399.509714] ? __warn (kernel/panic.c:677) 
[  399.509922] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.510165] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  399.510371] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  399.510583] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  399.510815] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  399.511072] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.511307] br_dev_delete (net/bridge/br_if.c:396) 
[  399.511538] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  399.511809] cleanup_net (net/core/net_namespace.c:630) 
[  399.512042] ? process_one_work (kernel/workqueue.c:2606) 
[  399.512274] process_one_work (kernel/workqueue.c:2633) 
[  399.512515] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  399.512748] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  399.513000] kthread (kernel/kthread.c:388) 
[  399.513181] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.513406] ret_from_fork (arch/x86/kernel/process.c:147) 
[  399.513626] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.513847] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  399.638207] ------------[ cut here ]------------
| [  399.638589] sysfs group 'bridge' not found for kobject 'br0'
| [  399.639042] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  399.639588] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  399.640850] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  399.641634] Workqueue: netns cleanup_net
[  399.641982] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 399.642344] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  399.643398] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  399.643712] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe452
[  399.644125] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  399.644530] RBP: 0000000000000000 R08: ffffffff99d4ecd0 R09: 00000000ffffe452
[  399.644924] R10: ffffffff99c98520 R11: ffffffff99d4ecd0 R12: ffff9bbec52a4610
[  399.645313] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec3964550
[  399.645734] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  399.646211] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  399.646541] CR2: 00007f8d4970c270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  399.646940] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  399.647375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  399.647811] PKRU: 55555554
[  399.648011] Call Trace:
[  399.648155]  <TASK>
[  399.648307] ? __warn (kernel/panic.c:677) 
[  399.648525] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.648798] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  399.649025] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  399.649260] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  399.649506] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  399.649772] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  399.650028] br_dev_delete (net/bridge/br_if.c:396) 
[  399.650271] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  399.650563] cleanup_net (net/core/net_namespace.c:630) 
[  399.650798] ? process_one_work (kernel/workqueue.c:2606) 
[  399.651059] process_one_work (kernel/workqueue.c:2633) 
[  399.651331] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  399.651683] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  399.651957] kthread (kernel/kthread.c:388) 
[  399.652153] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.652390] ret_from_fork (arch/x86/kernel/process.c:147) 
[  399.652611] ? __pfx_kthread (kernel/kthread.c:341) 
[  399.652829] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  407.604198] ------------[ cut here ]------------
| [  407.604781] sysfs group 'bridge' not found for kobject 'br0'
| [  407.605458] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  407.606414] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  407.607920] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  407.608921] Workqueue: netns cleanup_net
[  407.609384] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 407.609817] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  407.612144] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  407.612825] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe4a0
[  407.613779] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  407.614733] RBP: 0000000000000000 R08: ffffffff99d4f420 R09: 00000000ffffe4a0
[  407.615678] R10: ffffffff99c98520 R11: ffffffff99d4f420 R12: ffff9bbec50ee610
[  407.616420] R13: ffffae1e40063e08 R14: ffff9bbec50eeb80 R15: ffff9bbec3be2e50
[  407.617294] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  407.618281] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  407.618966] CR2: 00007fa09ff29d40 CR3: 0000000002802005 CR4: 0000000000770ef0
[  407.619659] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  407.620256] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  407.620810] PKRU: 55555554
[  407.621037] Call Trace:
[  407.621241]  <TASK>
[  407.621419] ? __warn (kernel/panic.c:677) 
[  407.621698] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.622044] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  407.622344] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  407.622628] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  407.622945] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  407.623285] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.623622] br_dev_delete (net/bridge/br_if.c:396) 
[  407.623926] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  407.624278] cleanup_net (net/core/net_namespace.c:630) 
[  407.624576] ? process_one_work (kernel/workqueue.c:2606) 
[  407.624919] process_one_work (kernel/workqueue.c:2633) 
[  407.625246] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  407.625552] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  407.625895] kthread (kernel/kthread.c:388) 
[  407.626163] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.626466] ret_from_fork (arch/x86/kernel/process.c:147) 
[  407.626754] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.627063] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  407.772204] ------------[ cut here ]------------
| [  407.772580] sysfs group 'bridge' not found for kobject 'br0'
| [  407.773045] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  407.773656] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  407.774979] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  407.775826] Workqueue: netns cleanup_net
[  407.776143] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 407.776510] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  407.777893] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  407.778308] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe4da
[  407.778830] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  407.779365] RBP: 0000000000000000 R08: ffffffff99d4f990 R09: 00000000ffffe4da
[  407.779810] R10: ffffffff99c98520 R11: ffffffff99d4f990 R12: ffff9bbec52a0610
[  407.780176] R13: ffffae1e40063e08 R14: ffff9bbec52a0b80 R15: ffffffff9b278f90
[  407.780536] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  407.780952] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  407.781243] CR2: 00007f370308a000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  407.781613] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  407.782002] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  407.782363] PKRU: 55555554
[  407.782507] Call Trace:
[  407.782640]  <TASK>
[  407.782763] ? __warn (kernel/panic.c:677) 
[  407.782945] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.783164] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  407.783359] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  407.783543] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  407.783753] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  407.783980] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.784202] br_dev_delete (net/bridge/br_if.c:396) 
[  407.784393] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  407.784622] cleanup_net (net/core/net_namespace.c:630) 
[  407.784819] ? process_one_work (kernel/workqueue.c:2606) 
[  407.785043] process_one_work (kernel/workqueue.c:2633) 
[  407.785255] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  407.785452] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  407.785681] kthread (kernel/kthread.c:388) 
[  407.785859] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.786065] ret_from_fork (arch/x86/kernel/process.c:147) 
[  407.786256] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.786452] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  407.788999] ------------[ cut here ]------------
| [  407.789236] sysfs group 'bridge' not found for kobject 'br0'
| [  407.789544] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  407.790017] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  407.790916] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  407.791510] Workqueue: netns cleanup_net
[  407.791725] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 407.791980] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  407.792926] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  407.793197] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe50b
[  407.793562] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  407.793940] RBP: 0000000000000000 R08: ffffffff99d4fe28 R09: 00000000ffffe50b
[  407.794304] R10: ffffffff99c98520 R11: ffffffff99d4fe28 R12: ffff9bbec5282610
[  407.794674] R13: ffffae1e40063e08 R14: ffff9bbec5282b80 R15: ffffffff9b278f90
[  407.795042] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  407.795450] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  407.795749] CR2: 00007f370308a000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  407.796120] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  407.796481] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  407.796848] PKRU: 55555554
[  407.796997] Call Trace:
[  407.797130]  <TASK>
[  407.797248] ? __warn (kernel/panic.c:677) 
[  407.797421] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.797638] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  407.797841] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  407.798035] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  407.798238] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  407.798459] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.798686] br_dev_delete (net/bridge/br_if.c:396) 
[  407.798876] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  407.799111] cleanup_net (net/core/net_namespace.c:630) 
[  407.799304] ? process_one_work (kernel/workqueue.c:2606) 
[  407.799524] process_one_work (kernel/workqueue.c:2633) 
[  407.799742] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  407.799948] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  407.800173] kthread (kernel/kthread.c:388) 
[  407.800341] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.800540] ret_from_fork (arch/x86/kernel/process.c:147) 
[  407.800735] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.800938] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  407.803468] ------------[ cut here ]------------
| [  407.803707] sysfs group 'bridge' not found for kobject 'br0'
| [  407.804014] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  407.804422] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  407.805300] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  407.805873] Workqueue: netns cleanup_net
[  407.806084] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 407.806353] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  407.807549] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  407.807943] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe53c
[  407.808485] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  407.809043] RBP: 0000000000000000 R08: ffffffff99d502c0 R09: 00000000ffffe53c
[  407.809587] R10: ffffffff99c98520 R11: ffffffff99d502c0 R12: ffff9bbec2178610
[  407.810137] R13: ffffae1e40063e08 R14: ffff9bbec2178b80 R15: ffffffff9b278f90
[  407.810680] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  407.811300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  407.811723] CR2: 00007f370308a000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  407.812253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  407.812783] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  407.813344] PKRU: 55555554
[  407.813564] Call Trace:
[  407.813765]  <TASK>
[  407.813953] ? __warn (kernel/panic.c:677) 
[  407.814216] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.814545] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  407.814840] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  407.815130] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  407.815435] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  407.815771] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  407.816118] br_dev_delete (net/bridge/br_if.c:396) 
[  407.816411] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  407.816749] cleanup_net (net/core/net_namespace.c:630) 
[  407.817049] ? process_one_work (kernel/workqueue.c:2606) 
[  407.817357] process_one_work (kernel/workqueue.c:2633) 
[  407.817574] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  407.817805] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  407.818040] kthread (kernel/kthread.c:388) 
[  407.818208] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.818406] ret_from_fork (arch/x86/kernel/process.c:147) 
[  407.818597] ? __pfx_kthread (kernel/kthread.c:341) 
[  407.818808] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  415.887145] ------------[ cut here ]------------
| [  415.887646] sysfs group 'bridge' not found for kobject 'br0'
| [  415.888221] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  415.889019] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  415.890585] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  415.891648] Workqueue: netns cleanup_net
[  415.891941] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 415.892387] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  415.893663] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  415.893980] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe58a
[  415.894493] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  415.894945] RBP: 0000000000000000 R08: ffffffff99d50a10 R09: 00000000ffffe58a
[  415.895600] R10: ffffffff99c98520 R11: ffffffff99d50a10 R12: ffff9bbec1cc4610
[  415.896140] R13: ffffae1e40063e08 R14: ffff9bbec1cc4b80 R15: ffff9bbec2bf1750
[  415.896774] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  415.897668] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  415.898137] CR2: 00007f9d953300e0 CR3: 0000000002802006 CR4: 0000000000770ef0
[  415.898980] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  415.899817] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  415.900631] PKRU: 55555554
[  415.900978] Call Trace:
[  415.901264]  <TASK>
[  415.901523] ? __warn (kernel/panic.c:677) 
[  415.901913] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  415.902349] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  415.902661] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  415.902959] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  415.903310] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  415.903677] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  415.904021] br_dev_delete (net/bridge/br_if.c:396) 
[  415.904357] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  415.904729] cleanup_net (net/core/net_namespace.c:630) 
[  415.905029] ? process_one_work (kernel/workqueue.c:2606) 
[  415.905376] process_one_work (kernel/workqueue.c:2633) 
[  415.905716] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  415.906015] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  415.906389] kthread (kernel/kthread.c:388) 
[  415.906643] ? __pfx_kthread (kernel/kthread.c:341) 
[  415.906923] ret_from_fork (arch/x86/kernel/process.c:147) 
[  415.907216] ? __pfx_kthread (kernel/kthread.c:341) 
[  415.907488] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  416.004107] ------------[ cut here ]------------
| [  416.004484] sysfs group 'bridge' not found for kobject 'br0'
| [  416.004923] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  416.005720] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  416.007186] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  416.008213] Workqueue: netns cleanup_net
[  416.008564] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 416.008979] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  416.010539] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  416.010985] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe5c1
[  416.011690] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  416.012307] RBP: 0000000000000000 R08: ffffffff99d50f38 R09: 00000000ffffe5c1
[  416.012928] R10: ffffffff99c98520 R11: ffffffff99d50f38 R12: ffff9bbec3b24610
[  416.013427] R13: ffffae1e40063e08 R14: ffff9bbec3b24b80 R15: ffff9bbec5014550
[  416.013790] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  416.014278] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  416.014571] CR2: 00007f9d953300e0 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  416.014940] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  416.015313] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  416.015825] PKRU: 55555554
[  416.016053] Call Trace:
[  416.016299]  <TASK>
[  416.016415] ? __warn (kernel/panic.c:677) 
[  416.016599] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  416.016951] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  416.017245] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  416.017580] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  416.017924] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  416.018312] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  416.018708] br_dev_delete (net/bridge/br_if.c:396) 
[  416.019098] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  416.019647] cleanup_net (net/core/net_namespace.c:630) 
[  416.019999] ? process_one_work (kernel/workqueue.c:2606) 
[  416.020363] process_one_work (kernel/workqueue.c:2633) 
[  416.020730] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  416.021100] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  416.021530] kthread (kernel/kthread.c:388) 
[  416.021886] ? __pfx_kthread (kernel/kthread.c:341) 
[  416.022253] ret_from_fork (arch/x86/kernel/process.c:147) 
[  416.022587] ? __pfx_kthread (kernel/kthread.c:341) 
[  416.022947] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  416.027180] ------------[ cut here ]------------
| [  416.027587] sysfs group 'bridge' not found for kobject 'br0'
| [  416.027957] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  416.028410] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  416.029482] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  416.030069] Workqueue: netns cleanup_net
[  416.030280] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 416.030650] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  416.032008] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  416.032527] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe5f2
[  416.033253] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  416.033956] RBP: 0000000000000000 R08: ffffffff99d513d0 R09: 00000000ffffe5f2
[  416.034701] R10: ffffffff99c98520 R11: ffffffff99d513d0 R12: ffff9bbec39b8610
[  416.035404] R13: ffffae1e40063e08 R14: ffff9bbec39b8b80 R15: ffff9bbec5014550
[  416.036109] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  416.036949] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  416.037509] CR2: 00007f9d953300e0 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  416.038182] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  416.038803] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  416.039443] PKRU: 55555554
[  416.039710] Call Trace:
[  416.039924]  <TASK>
[  416.040145] ? __warn (kernel/panic.c:677) 
[  416.040395] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  416.040813] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  416.041131] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  416.041444] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  416.041649] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  416.041872] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  416.042118] br_dev_delete (net/bridge/br_if.c:396) 
[  416.042354] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  416.042698] cleanup_net (net/core/net_namespace.c:630) 
[  416.042947] ? process_one_work (kernel/workqueue.c:2606) 
[  416.043169] process_one_work (kernel/workqueue.c:2633) 
[  416.043383] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  416.043585] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  416.043872] kthread (kernel/kthread.c:388) 
[  416.044145] ? __pfx_kthread (kernel/kthread.c:341) 
[  416.044474] ret_from_fork (arch/x86/kernel/process.c:147) 
[  416.044825] ? __pfx_kthread (kernel/kthread.c:341) 
[  416.045083] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  416.168233] ------------[ cut here ]------------
| [  416.168633] sysfs group 'bridge' not found for kobject 'br0'
| [  416.169156] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  416.170005] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  416.171856] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  416.173211] Workqueue: netns cleanup_net
[  416.173691] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 416.174301] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  416.176520] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  416.177163] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe626
[  416.178049] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  416.178890] RBP: 0000000000000000 R08: ffffffff99d518b0 R09: 00000000ffffe626
[  416.179730] R10: ffffffff99c98520 R11: ffffffff99d518b0 R12: ffff9bbec3b22610
[  416.180533] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffff9bbec2bf4550
[  416.181346] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  416.182260] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  416.182751] CR2: 00007f9d953300e0 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  416.183379] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  416.184098] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  416.184645] PKRU: 55555554
[  416.184893] Call Trace:
[  416.185183]  <TASK>
[  416.185476] ? __warn (kernel/panic.c:677) 
[  416.185760] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  416.186226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  416.186705] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  416.187247] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  416.187804] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  416.188404] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  416.189155] br_dev_delete (net/bridge/br_if.c:396) 
[  416.189739] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  416.190485] cleanup_net (net/core/net_namespace.c:630) 
[  416.190942] ? process_one_work (kernel/workqueue.c:2606) 
[  416.191651] process_one_work (kernel/workqueue.c:2633) 
[  416.192151] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  416.192613] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  416.193146] kthread (kernel/kthread.c:388) 
[  416.193454] ? __pfx_kthread (kernel/kthread.c:341) 
[  416.193839] ret_from_fork (arch/x86/kernel/process.c:147) 
[  416.194188] ? __pfx_kthread (kernel/kthread.c:341) 
[  416.194536] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  424.435125] ------------[ cut here ]------------
| [  424.435413] sysfs group 'bridge' not found for kobject 'br0'
| [  424.435743] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  424.436207] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  424.437212] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  424.437835] Workqueue: netns cleanup_net
[  424.438079] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 424.438341] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  424.439295] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  424.439615] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe674
[  424.440000] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  424.440382] RBP: 0000000000000000 R08: ffffffff99d52000 R09: 00000000ffffe674
[  424.440779] R10: ffffffff99c98520 R11: ffffffff99d52000 R12: ffff9bbec3b22610
[  424.441203] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffff9bbec5014550
[  424.441598] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  424.442032] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  424.442377] CR2: 0000555b8c6c3670 CR3: 00000000026cc003 CR4: 0000000000770ef0
[  424.442776] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  424.443173] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  424.443560] PKRU: 55555554
[  424.443719] Call Trace:
[  424.443878]  <TASK>
[  424.444033] ? __warn (kernel/panic.c:677) 
[  424.444232] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.444464] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  424.444708] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  424.444964] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  424.445208] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  424.445459] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.445712] br_dev_delete (net/bridge/br_if.c:396) 
[  424.445963] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  424.446227] cleanup_net (net/core/net_namespace.c:630) 
[  424.446445] ? process_one_work (kernel/workqueue.c:2606) 
[  424.446701] process_one_work (kernel/workqueue.c:2633) 
[  424.446978] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  424.447214] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  424.447458] kthread (kernel/kthread.c:388) 
[  424.447667] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.447923] ret_from_fork (arch/x86/kernel/process.c:147) 
[  424.448143] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.448363] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  424.539219] ------------[ cut here ]------------
| [  424.539520] sysfs group 'bridge' not found for kobject 'br0'
| [  424.539899] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  424.540359] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  424.541307] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  424.541982] Workqueue: netns cleanup_net
[  424.542220] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 424.542500] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  424.543494] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  424.543841] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe6ab
[  424.544242] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  424.544640] RBP: 0000000000000000 R08: ffffffff99d52528 R09: 00000000ffffe6ab
[  424.545077] R10: ffffffff99c98520 R11: ffffffff99d52528 R12: ffff9bbec217c610
[  424.545473] R13: ffffae1e40063e08 R14: ffff9bbec217cb80 R15: ffff9bbec2bf4550
[  424.545886] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  424.546354] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  424.546693] CR2: 0000555b8ad16dec CR3: 00000000026cc004 CR4: 0000000000770ef0
[  424.547111] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  424.547527] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  424.547957] PKRU: 55555554
[  424.548124] Call Trace:
[  424.548283]  <TASK>
[  424.548442] ? __warn (kernel/panic.c:677) 
[  424.548661] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.548918] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  424.549145] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  424.549364] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  424.549584] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  424.549823] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.550079] br_dev_delete (net/bridge/br_if.c:396) 
[  424.550300] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  424.550557] cleanup_net (net/core/net_namespace.c:630) 
[  424.550765] ? process_one_work (kernel/workqueue.c:2606) 
[  424.551020] process_one_work (kernel/workqueue.c:2633) 
[  424.551293] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  424.551540] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  424.551792] kthread (kernel/kthread.c:388) 
[  424.552011] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.552253] ret_from_fork (arch/x86/kernel/process.c:147) 
[  424.552491] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.552737] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  424.555665] ------------[ cut here ]------------
| [  424.555958] sysfs group 'bridge' not found for kobject 'br0'
| [  424.556307] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  424.556765] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  424.557729] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  424.558390] Workqueue: netns cleanup_net
[  424.558628] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 424.558916] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  424.559972] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  424.560303] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe6dc
[  424.560719] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  424.561118] RBP: 0000000000000000 R08: ffffffff99d529c0 R09: 00000000ffffe6dc
[  424.561648] R10: ffffffff99c98520 R11: ffffffff99d529c0 R12: ffff9bbec2178610
[  424.562070] R13: ffffae1e40063e08 R14: ffff9bbec2178b80 R15: ffff9bbec2bf4550
[  424.562470] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  424.562918] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  424.563248] CR2: 0000555b8ad16dec CR3: 00000000026cc004 CR4: 0000000000770ef0
[  424.563646] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  424.564040] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  424.564418] PKRU: 55555554
[  424.564593] Call Trace:
[  424.564769]  <TASK>
[  424.564915] ? __warn (kernel/panic.c:677) 
[  424.565102] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.565348] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  424.565574] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  424.565787] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  424.566009] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  424.566257] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.566532] br_dev_delete (net/bridge/br_if.c:396) 
[  424.566772] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  424.567037] cleanup_net (net/core/net_namespace.c:630) 
[  424.567277] ? process_one_work (kernel/workqueue.c:2606) 
[  424.567543] process_one_work (kernel/workqueue.c:2633) 
[  424.567800] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  424.568029] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  424.568306] kthread (kernel/kthread.c:388) 
[  424.568511] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.568732] ret_from_fork (arch/x86/kernel/process.c:147) 
[  424.568973] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.569207] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  424.710145] ------------[ cut here ]------------
| [  424.710677] sysfs group 'bridge' not found for kobject 'br0'
| [  424.711317] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  424.712709] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  424.715183] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  424.716701] Workqueue: netns cleanup_net
[  424.717101] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 424.717492] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  424.719035] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  424.719423] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe710
[  424.719786] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  424.720245] RBP: 0000000000000000 R08: ffffffff99d52ea0 R09: 00000000ffffe710
[  424.720664] R10: ffffffff99c98520 R11: ffffffff99d52ea0 R12: ffff9bbec52a4610
[  424.721302] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec2bf5c50
[  424.721697] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  424.722123] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  424.722565] CR2: 00007f992ecc2000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  424.723244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  424.723662] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  424.724154] PKRU: 55555554
[  424.724378] Call Trace:
[  424.724581]  <TASK>
[  424.724783] ? __warn (kernel/panic.c:677) 
[  424.725099] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.725644] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  424.726210] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  424.726750] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  424.727300] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  424.727929] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  424.728519] br_dev_delete (net/bridge/br_if.c:396) 
[  424.729024] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  424.729650] cleanup_net (net/core/net_namespace.c:630) 
[  424.730202] ? process_one_work (kernel/workqueue.c:2606) 
[  424.730794] process_one_work (kernel/workqueue.c:2633) 
[  424.731489] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  424.732085] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  424.732611] kthread (kernel/kthread.c:388) 
[  424.733086] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.733519] ret_from_fork (arch/x86/kernel/process.c:147) 
[  424.733970] ? __pfx_kthread (kernel/kthread.c:341) 
[  424.734439] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  433.174193] ------------[ cut here ]------------
| [  433.174669] sysfs group 'bridge' not found for kobject 'br0'
| [  433.175278] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  433.176047] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  433.177732] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  433.178797] Workqueue: netns cleanup_net
[  433.179207] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 433.179613] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  433.181458] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  433.182029] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe75e
[  433.182642] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  433.183361] RBP: 0000000000000000 R08: ffffffff99d535f0 R09: 00000000ffffe75e
[  433.184062] R10: ffffffff99c98520 R11: ffffffff99d535f0 R12: ffff9bbec3b26610
[  433.184562] R13: ffffae1e40063e08 R14: ffff9bbec3b26b80 R15: ffff9bbec2bf0050
[  433.184998] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  433.185581] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  433.186016] CR2: 00007f752de2e000 CR3: 0000000002802002 CR4: 0000000000770ef0
[  433.186482] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  433.187039] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  433.187407] PKRU: 55555554
[  433.187561] Call Trace:
[  433.187736]  <TASK>
[  433.187970] ? __warn (kernel/panic.c:677) 
[  433.188384] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.188699] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  433.189026] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  433.189330] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  433.189776] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  433.190418] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.190848] br_dev_delete (net/bridge/br_if.c:396) 
[  433.191316] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  433.191841] cleanup_net (net/core/net_namespace.c:630) 
[  433.192295] ? process_one_work (kernel/workqueue.c:2606) 
[  433.192839] process_one_work (kernel/workqueue.c:2633) 
[  433.193341] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  433.193806] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  433.194367] kthread (kernel/kthread.c:388) 
[  433.194728] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.195261] ret_from_fork (arch/x86/kernel/process.c:147) 
[  433.195624] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.195962] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  433.360177] ------------[ cut here ]------------
| [  433.360466] sysfs group 'bridge' not found for kobject 'br0'
| [  433.360813] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  433.361272] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  433.362262] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  433.362883] Workqueue: netns cleanup_net
[  433.363129] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 433.363414] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  433.364426] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  433.364743] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe798
[  433.365146] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  433.365544] RBP: 0000000000000000 R08: ffffffff99d53b60 R09: 00000000ffffe798
[  433.365963] R10: ffffffff99c98520 R11: ffffffff99d53b60 R12: ffff9bbec38ec610
[  433.366389] R13: ffffae1e40063e08 R14: ffff9bbec38ecb80 R15: ffffffff9b278f90
[  433.366797] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  433.367264] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  433.367611] CR2: 00007f66cb5ed000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  433.368023] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  433.368416] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  433.368823] PKRU: 55555554
[  433.369016] Call Trace:
[  433.369216]  <TASK>
[  433.369368] ? __warn (kernel/panic.c:677) 
[  433.369567] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.369830] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  433.370080] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  433.370315] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  433.370556] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  433.370809] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.371077] br_dev_delete (net/bridge/br_if.c:396) 
[  433.371328] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  433.371621] cleanup_net (net/core/net_namespace.c:630) 
[  433.371848] ? process_one_work (kernel/workqueue.c:2606) 
[  433.372108] process_one_work (kernel/workqueue.c:2633) 
[  433.372362] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  433.372572] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  433.372805] kthread (kernel/kthread.c:388) 
[  433.373023] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.373235] ret_from_fork (arch/x86/kernel/process.c:147) 
[  433.373461] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.373691] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  433.376496] ------------[ cut here ]------------
| [  433.376775] sysfs group 'bridge' not found for kobject 'br0'
| [  433.377122] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  433.377597] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  433.378943] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  433.379746] Workqueue: netns cleanup_net
[  433.380113] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 433.380680] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  433.382740] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  433.383369] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe7c9
[  433.384186] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  433.385002] RBP: 0000000000000000 R08: ffffffff99d53ff8 R09: 00000000ffffe7c9
[  433.385718] R10: ffffffff99c98520 R11: ffffffff99d53ff8 R12: ffff9bbec38ee610
[  433.386973] R13: ffffae1e40063e08 R14: ffff9bbec38eeb80 R15: ffffffff9b278f90
[  433.388100] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  433.389339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  433.390512] CR2: 00007f96d9881000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  433.391228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  433.391644] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  433.392046] PKRU: 55555554
[  433.392250] Call Trace:
[  433.392445]  <TASK>
[  433.392564] ? __warn (kernel/panic.c:677) 
[  433.392741] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.392979] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  433.393176] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  433.393363] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  433.393563] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  433.393789] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.394023] br_dev_delete (net/bridge/br_if.c:396) 
[  433.394217] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  433.394451] cleanup_net (net/core/net_namespace.c:630) 
[  433.394646] ? process_one_work (kernel/workqueue.c:2606) 
[  433.394865] process_one_work (kernel/workqueue.c:2633) 
[  433.395095] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  433.395294] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  433.395520] kthread (kernel/kthread.c:388) 
[  433.395689] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.395886] ret_from_fork (arch/x86/kernel/process.c:147) 
[  433.396093] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.396291] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  433.398876] ------------[ cut here ]------------
| [  433.399164] sysfs group 'bridge' not found for kobject 'br0'
| [  433.399485] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  433.399911] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  433.400799] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  433.401403] Workqueue: netns cleanup_net
[  433.401613] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 433.401863] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  433.402800] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  433.403080] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe7fa
[  433.403445] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  433.403806] RBP: 0000000000000000 R08: ffffffff99d54490 R09: 00000000ffffe7fa
[  433.404180] R10: ffffffff99c98520 R11: ffffffff99d54490 R12: ffff9bbec3b20610
[  433.404544] R13: ffffae1e40063e08 R14: ffff9bbec3b20b80 R15: ffffffff9b278f90
[  433.404917] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  433.405324] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  433.405621] CR2: 0000555b8ad16dec CR3: 00000000026cc006 CR4: 0000000000770ef0
[  433.405992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  433.406353] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  433.406715] PKRU: 55555554
[  433.406860] Call Trace:
[  433.406999]  <TASK>
[  433.407118] ? __warn (kernel/panic.c:677) 
[  433.407295] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.407512] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  433.407710] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  433.407897] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  433.408106] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  433.408332] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  433.408551] br_dev_delete (net/bridge/br_if.c:396) 
[  433.408745] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  433.408987] cleanup_net (net/core/net_namespace.c:630) 
[  433.409180] ? process_one_work (kernel/workqueue.c:2606) 
[  433.409402] process_one_work (kernel/workqueue.c:2633) 
[  433.409616] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  433.409816] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  433.410055] kthread (kernel/kthread.c:388) 
[  433.410229] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.410429] ret_from_fork (arch/x86/kernel/process.c:147) 
[  433.410623] ? __pfx_kthread (kernel/kthread.c:341) 
[  433.410821] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  441.590116] ------------[ cut here ]------------
| [  441.590560] sysfs group 'bridge' not found for kobject 'br0'
| [  441.591021] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  441.591871] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  441.593284] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  441.594165] Workqueue: netns cleanup_net
[  441.594507] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 441.594764] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  441.595877] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  441.596182] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe848
[  441.596701] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  441.597076] RBP: 0000000000000000 R08: ffffffff99d54be0 R09: 00000000ffffe848
[  441.597505] R10: ffffffff99c98520 R11: ffffffff99d54be0 R12: ffff9bbec52a0610
[  441.598082] R13: ffffae1e40063e08 R14: ffff9bbec52a0b80 R15: ffff9bbec5010050
[  441.598639] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  441.599430] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  441.600127] CR2: 0000555b8c6c91c0 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  441.600981] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  441.601928] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  441.602690] PKRU: 55555554
[  441.603042] Call Trace:
[  441.603327]  <TASK>
[  441.603547] ? __warn (kernel/panic.c:677) 
[  441.603940] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.604393] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  441.604814] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  441.605171] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  441.605591] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  441.606016] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.606482] br_dev_delete (net/bridge/br_if.c:396) 
[  441.606866] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  441.607298] cleanup_net (net/core/net_namespace.c:630) 
[  441.607634] ? process_one_work (kernel/workqueue.c:2606) 
[  441.608052] process_one_work (kernel/workqueue.c:2633) 
[  441.608433] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  441.608782] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  441.609025] kthread (kernel/kthread.c:388) 
[  441.609223] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.609472] ret_from_fork (arch/x86/kernel/process.c:147) 
[  441.609676] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.609876] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  441.716126] ------------[ cut here ]------------
| [  441.716403] sysfs group 'bridge' not found for kobject 'br0'
| [  441.716782] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  441.717511] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  441.718833] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  441.719912] Workqueue: netns cleanup_net
[  441.720283] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 441.720761] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  441.722375] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  441.722888] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe87f
[  441.723598] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  441.724325] RBP: 0000000000000000 R08: ffffffff99d55108 R09: 00000000ffffe87f
[  441.724917] R10: ffffffff99c98520 R11: ffffffff99d55108 R12: ffff9bbec52a2610
[  441.725570] R13: ffffae1e40063e08 R14: ffff9bbec52a2b80 R15: ffff9bbec3be5c50
[  441.726250] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  441.726938] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  441.727513] CR2: 0000555b8c6c91c0 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  441.728016] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  441.728454] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  441.728954] PKRU: 55555554
[  441.729129] Call Trace:
[  441.729263]  <TASK>
[  441.729385] ? __warn (kernel/panic.c:677) 
[  441.729587] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.729847] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  441.730181] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  441.730549] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  441.730969] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  441.731319] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.731639] br_dev_delete (net/bridge/br_if.c:396) 
[  441.731991] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  441.732259] cleanup_net (net/core/net_namespace.c:630) 
[  441.732527] ? process_one_work (kernel/workqueue.c:2606) 
[  441.732899] process_one_work (kernel/workqueue.c:2633) 
[  441.733336] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  441.733713] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  441.734181] kthread (kernel/kthread.c:388) 
[  441.734515] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.734957] ret_from_fork (arch/x86/kernel/process.c:147) 
[  441.735362] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.735795] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  441.739812] ------------[ cut here ]------------
| [  441.740061] sysfs group 'bridge' not found for kobject 'br0'
| [  441.740394] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  441.741010] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  441.742355] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  441.743389] Workqueue: netns cleanup_net
[  441.743777] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 441.744227] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  441.745866] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  441.746338] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe8b0
[  441.747019] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  441.747749] RBP: 0000000000000000 R08: ffffffff99d555a0 R09: 00000000ffffe8b0
[  441.748390] R10: ffffffff99c98520 R11: ffffffff99d555a0 R12: ffff9bbec52a6610
[  441.748993] R13: ffffae1e40063e08 R14: ffff9bbec52a6b80 R15: ffff9bbec3be5c50
[  441.749592] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  441.750291] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  441.750873] CR2: 0000555b8c6c91c0 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  441.751545] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  441.752203] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  441.752637] PKRU: 55555554
[  441.752826] Call Trace:
[  441.753010]  <TASK>
[  441.753134] ? __warn (kernel/panic.c:677) 
[  441.753365] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.753725] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  441.753959] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  441.754147] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  441.754368] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  441.754708] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.755147] br_dev_delete (net/bridge/br_if.c:396) 
[  441.755378] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  441.755718] cleanup_net (net/core/net_namespace.c:630) 
[  441.756036] ? process_one_work (kernel/workqueue.c:2606) 
[  441.756469] process_one_work (kernel/workqueue.c:2633) 
[  441.756870] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  441.757226] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  441.757647] kthread (kernel/kthread.c:388) 
[  441.757948] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.758313] ret_from_fork (arch/x86/kernel/process.c:147) 
[  441.758679] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.759018] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  441.870123] ------------[ cut here ]------------
| [  441.870589] sysfs group 'bridge' not found for kobject 'br0'
| [  441.871136] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  441.871889] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  441.873301] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  441.874312] Workqueue: netns cleanup_net
[  441.874590] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 441.875061] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  441.876361] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  441.876681] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe8e4
[  441.877223] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  441.877595] RBP: 0000000000000000 R08: ffffffff99d55a80 R09: 00000000ffffe8e4
[  441.878251] R10: ffffffff99c98520 R11: ffffffff99d55a80 R12: ffff9bbec52a4610
[  441.879002] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec3be4550
[  441.880035] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  441.881237] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  441.882135] CR2: 0000555b8c6c91c0 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  441.883178] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  441.884252] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  441.885283] PKRU: 55555554
[  441.885682] Call Trace:
[  441.886001]  <TASK>
[  441.886313] ? __warn (kernel/panic.c:677) 
[  441.886703] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.887227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  441.887689] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  441.888223] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  441.888674] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  441.889209] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  441.889596] br_dev_delete (net/bridge/br_if.c:396) 
[  441.889916] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  441.890337] cleanup_net (net/core/net_namespace.c:630) 
[  441.890629] ? process_one_work (kernel/workqueue.c:2606) 
[  441.890964] process_one_work (kernel/workqueue.c:2633) 
[  441.891288] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  441.891575] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  441.891922] kthread (kernel/kthread.c:388) 
[  441.892178] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.892472] ret_from_fork (arch/x86/kernel/process.c:147) 
[  441.892760] ? __pfx_kthread (kernel/kthread.c:341) 
[  441.893059] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  449.855206] ------------[ cut here ]------------
| [  449.855728] sysfs group 'bridge' not found for kobject 'br0'
| [  449.856045] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  449.856568] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  449.857818] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  449.858408] Workqueue: netns cleanup_net
[  449.858617] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 449.858963] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  449.860466] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  449.861043] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe932
[  449.861869] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  449.862680] RBP: 0000000000000000 R08: ffffffff99d561d0 R09: 00000000ffffe932
[  449.863447] R10: ffffffff99c98520 R11: ffffffff99d561d0 R12: ffff9bbec3b5c610
[  449.864264] R13: ffffae1e40063e08 R14: ffff9bbec3b5cb80 R15: ffff9bbec3be5c50
[  449.865092] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  449.865990] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  449.866633] CR2: 0000555b8c6b5be0 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  449.867233] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  449.867845] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  449.868585] PKRU: 55555554
[  449.868819] Call Trace:
[  449.869132]  <TASK>
[  449.869365] ? __warn (kernel/panic.c:677) 
[  449.869655] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  449.870050] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  449.870428] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  449.870711] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  449.870931] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  449.871181] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  449.871468] br_dev_delete (net/bridge/br_if.c:396) 
[  449.871661] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  449.871899] cleanup_net (net/core/net_namespace.c:630) 
[  449.872100] ? process_one_work (kernel/workqueue.c:2606) 
[  449.872320] process_one_work (kernel/workqueue.c:2633) 
[  449.872534] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  449.872737] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  449.872969] kthread (kernel/kthread.c:388) 
[  449.873139] ? __pfx_kthread (kernel/kthread.c:341) 
[  449.873344] ret_from_fork (arch/x86/kernel/process.c:147) 
[  449.873560] ? __pfx_kthread (kernel/kthread.c:341) 
[  449.873765] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  449.984198] ------------[ cut here ]------------
| [  449.984753] sysfs group 'bridge' not found for kobject 'br0'
| [  449.985434] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  449.986207] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  449.987734] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  449.988792] Workqueue: netns cleanup_net
[  449.989313] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 449.989779] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  449.991562] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  449.992066] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe969
[  449.992872] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  449.993820] RBP: 0000000000000000 R08: ffffffff99d566f8 R09: 00000000ffffe969
[  449.994676] R10: ffffffff99c98520 R11: ffffffff99d566f8 R12: ffff9bbec39be610
[  449.995493] R13: ffffae1e40063e08 R14: ffff9bbec39beb80 R15: ffff9bbec3be4550
[  449.996366] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  449.997343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  449.998066] CR2: 0000555b8c6b5be0 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  449.998942] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  449.999776] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  450.000322] PKRU: 55555554
[  450.000619] Call Trace:
[  450.000817]  <TASK>
[  450.000999] ? __warn (kernel/panic.c:677) 
[  450.001260] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  450.001625] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  450.002065] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  450.002421] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  450.002794] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  450.003339] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  450.003937] br_dev_delete (net/bridge/br_if.c:396) 
[  450.004456] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  450.005012] cleanup_net (net/core/net_namespace.c:630) 
[  450.005372] ? process_one_work (kernel/workqueue.c:2606) 
[  450.005796] process_one_work (kernel/workqueue.c:2633) 
[  450.006212] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  450.006622] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  450.007198] kthread (kernel/kthread.c:388) 
[  450.007624] ? __pfx_kthread (kernel/kthread.c:341) 
[  450.008142] ret_from_fork (arch/x86/kernel/process.c:147) 
[  450.008553] ? __pfx_kthread (kernel/kthread.c:341) 
[  450.008900] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  450.014234] ------------[ cut here ]------------
| [  450.014678] sysfs group 'bridge' not found for kobject 'br0'
| [  450.015335] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  450.016074] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  450.017993] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  450.019302] Workqueue: netns cleanup_net
[  450.019768] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 450.020363] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  450.022085] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  450.022637] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe99a
[  450.023401] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  450.024196] RBP: 0000000000000000 R08: ffffffff99d56b90 R09: 00000000ffffe99a
[  450.024913] R10: ffffffff99c98520 R11: ffffffff99d56b90 R12: ffff9bbec217c610
[  450.025759] R13: ffffae1e40063e08 R14: ffff9bbec217cb80 R15: ffff9bbec3be4550
[  450.026586] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  450.027319] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  450.027845] CR2: 0000555b8c6b5be0 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  450.028386] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  450.028932] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  450.029465] PKRU: 55555554
[  450.029679] Call Trace:
[  450.029872]  <TASK>
[  450.030052] ? __warn (kernel/panic.c:677) 
[  450.030309] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  450.030632] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  450.030928] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  450.031218] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  450.031516] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  450.031852] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  450.032185] br_dev_delete (net/bridge/br_if.c:396) 
[  450.032470] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  450.032810] cleanup_net (net/core/net_namespace.c:630) 
[  450.033105] ? process_one_work (kernel/workqueue.c:2606) 
[  450.033427] process_one_work (kernel/workqueue.c:2633) 
[  450.033743] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  450.034047] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  450.034377] kthread (kernel/kthread.c:388) 
[  450.034628] ? __pfx_kthread (kernel/kthread.c:341) 
[  450.034930] ret_from_fork (arch/x86/kernel/process.c:147) 
[  450.035211] ? __pfx_kthread (kernel/kthread.c:341) 
[  450.035501] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  450.150110] ------------[ cut here ]------------
| [  450.150528] sysfs group 'bridge' not found for kobject 'br0'
| [  450.150989] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  450.151672] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  450.152982] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  450.153923] Workqueue: netns cleanup_net
[  450.154252] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 450.154778] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  450.156402] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  450.157078] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffe9ce
[  450.158035] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  450.159027] RBP: 0000000000000000 R08: ffffffff99d57070 R09: 00000000ffffe9ce
[  450.160018] R10: ffffffff99c98520 R11: ffffffff99d57070 R12: ffff9bbec39bc610
[  450.160993] R13: ffffae1e40063e08 R14: ffff9bbec39bcb80 R15: ffff9bbec2bf0050
[  450.161970] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  450.162915] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  450.163617] CR2: 0000555b8c6b5be0 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  450.164522] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  450.165402] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  450.166155] PKRU: 55555554
[  450.166392] Call Trace:
[  450.166616]  <TASK>
[  450.166837] ? __warn (kernel/panic.c:677) 
[  450.167116] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  450.167455] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  450.167757] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  450.168047] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  450.168345] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  450.168680] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  450.169027] br_dev_delete (net/bridge/br_if.c:396) 
[  450.169321] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  450.169676] cleanup_net (net/core/net_namespace.c:630) 
[  450.169984] ? process_one_work (kernel/workqueue.c:2606) 
[  450.170322] process_one_work (kernel/workqueue.c:2633) 
[  450.170640] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  450.170949] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  450.171296] kthread (kernel/kthread.c:388) 
[  450.171549] ? __pfx_kthread (kernel/kthread.c:341) 
[  450.171838] ret_from_fork (arch/x86/kernel/process.c:147) 
[  450.172128] ? __pfx_kthread (kernel/kthread.c:341) 
[  450.172422] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  458.326111] ------------[ cut here ]------------
| [  458.326725] sysfs group 'bridge' not found for kobject 'br0'
| [  458.327228] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  458.327977] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  458.329970] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  458.330994] Workqueue: netns cleanup_net
[  458.331340] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 458.331736] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  458.333540] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  458.333971] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffea1d
[  458.335026] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  458.336163] RBP: 0000000000000000 R08: ffffffff99d577d8 R09: 00000000ffffea1d
[  458.337104] R10: ffffffff99c98520 R11: ffffffff99d577d8 R12: ffff9bbec217e610
[  458.337964] R13: ffffae1e40063e08 R14: ffff9bbec217eb80 R15: ffff9bbec3964550
[  458.338793] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  458.339682] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  458.340248] CR2: 00007fe0d6300d40 CR3: 0000000002802004 CR4: 0000000000770ef0
[  458.340975] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  458.341805] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  458.342502] PKRU: 55555554
[  458.342773] Call Trace:
[  458.343040]  <TASK>
[  458.343262] ? __warn (kernel/panic.c:677) 
[  458.343573] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.343962] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  458.344164] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  458.344393] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  458.344625] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  458.344849] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.345076] br_dev_delete (net/bridge/br_if.c:396) 
[  458.345279] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  458.345512] cleanup_net (net/core/net_namespace.c:630) 
[  458.345706] ? process_one_work (kernel/workqueue.c:2606) 
[  458.345932] process_one_work (kernel/workqueue.c:2633) 
[  458.346147] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  458.346364] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  458.346600] kthread (kernel/kthread.c:388) 
[  458.346782] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.347011] ret_from_fork (arch/x86/kernel/process.c:147) 
[  458.347206] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.347404] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  458.449134] ------------[ cut here ]------------
| [  458.449701] sysfs group 'bridge' not found for kobject 'br0'
| [  458.450446] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  458.451360] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  458.453551] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  458.454805] Workqueue: netns cleanup_net
[  458.455265] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 458.455751] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  458.457238] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  458.457570] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffea54
[  458.458149] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  458.458524] RBP: 0000000000000000 R08: ffffffff99d57d00 R09: 00000000ffffea54
[  458.458941] R10: ffffffff99c98520 R11: ffffffff99d57d00 R12: ffff9bbec3832610
[  458.459565] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffff9bbec2bf0050
[  458.460238] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  458.461076] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  458.461610] CR2: 00007fe0d6300d40 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  458.462194] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  458.462949] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  458.463729] PKRU: 55555554
[  458.464027] Call Trace:
[  458.464298]  <TASK>
[  458.464548] ? __warn (kernel/panic.c:677) 
[  458.464877] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.465335] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  458.465724] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  458.466133] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  458.466545] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  458.466996] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.467425] br_dev_delete (net/bridge/br_if.c:396) 
[  458.467797] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  458.468296] cleanup_net (net/core/net_namespace.c:630) 
[  458.468687] ? process_one_work (kernel/workqueue.c:2606) 
[  458.469167] process_one_work (kernel/workqueue.c:2633) 
[  458.469516] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  458.469715] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  458.469945] kthread (kernel/kthread.c:388) 
[  458.470177] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.470375] ret_from_fork (arch/x86/kernel/process.c:147) 
[  458.470570] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.470769] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  458.475416] ------------[ cut here ]------------
| [  458.475986] sysfs group 'bridge' not found for kobject 'br0'
| [  458.476735] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  458.477712] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  458.479521] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  458.480631] Workqueue: netns cleanup_net
[  458.481037] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 458.481602] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  458.483265] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  458.483866] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffea85
[  458.484305] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  458.484722] RBP: 0000000000000000 R08: ffffffff99d58198 R09: 00000000ffffea85
[  458.485511] R10: ffffffff99c98520 R11: ffffffff99d58198 R12: ffff9bbec2178610
[  458.485931] R13: ffffae1e40063e08 R14: ffff9bbec2178b80 R15: ffff9bbec2bf0050
[  458.486642] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  458.487645] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  458.488183] CR2: 00007fe0d6300d40 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  458.488869] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  458.489548] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  458.490181] PKRU: 55555554
[  458.490442] Call Trace:
[  458.490682]  <TASK>
[  458.490894] ? __warn (kernel/panic.c:677) 
[  458.491293] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.491748] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  458.492174] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  458.492582] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  458.493044] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  458.493515] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.493855] br_dev_delete (net/bridge/br_if.c:396) 
[  458.494314] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  458.494753] cleanup_net (net/core/net_namespace.c:630) 
[  458.495111] ? process_one_work (kernel/workqueue.c:2606) 
[  458.495574] process_one_work (kernel/workqueue.c:2633) 
[  458.495987] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  458.496338] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  458.496803] kthread (kernel/kthread.c:388) 
[  458.497133] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.497463] ret_from_fork (arch/x86/kernel/process.c:147) 
[  458.497668] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.497916] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  458.608098] ------------[ cut here ]------------
| [  458.608552] sysfs group 'bridge' not found for kobject 'br0'
| [  458.609138] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  458.609921] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  458.611673] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  458.613066] Workqueue: netns cleanup_net
[  458.613614] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 458.614235] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  458.616590] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  458.617347] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffeab9
[  458.617910] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  458.618541] RBP: 0000000000000000 R08: ffffffff99d58678 R09: 00000000ffffeab9
[  458.619192] R10: ffffffff99c98520 R11: ffffffff99d58678 R12: ffff9bbec3b5a610
[  458.619751] R13: ffffae1e40063e08 R14: ffff9bbec3b5ab80 R15: ffff9bbec2bf2e50
[  458.620397] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  458.620892] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  458.621427] CR2: 00007fe0d6300d40 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  458.622216] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  458.622926] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  458.623609] PKRU: 55555554
[  458.623926] Call Trace:
[  458.624190]  <TASK>
[  458.624396] ? __warn (kernel/panic.c:677) 
[  458.624751] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.625153] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  458.625514] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  458.625893] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  458.626273] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  458.626798] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  458.627232] br_dev_delete (net/bridge/br_if.c:396) 
[  458.627640] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  458.628132] cleanup_net (net/core/net_namespace.c:630) 
[  458.628434] ? process_one_work (kernel/workqueue.c:2606) 
[  458.628840] process_one_work (kernel/workqueue.c:2633) 
[  458.629293] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  458.629640] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  458.630051] kthread (kernel/kthread.c:388) 
[  458.630406] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.630738] ret_from_fork (arch/x86/kernel/process.c:147) 
[  458.631062] ? __pfx_kthread (kernel/kthread.c:341) 
[  458.631455] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  470.216191] ------------[ cut here ]------------
| [  470.216458] sysfs group 'bridge' not found for kobject 'br0'
| [  470.216765] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  470.217235] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  470.218189] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  470.218786] Workqueue: netns cleanup_net
[  470.219045] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 470.219319] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  470.220286] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  470.220613] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffeb07
[  470.221006] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  470.221417] RBP: 0000000000000000 R08: ffffffff99d58dc8 R09: 00000000ffffeb07
[  470.221813] R10: ffffffff99c98520 R11: ffffffff99d58dc8 R12: ffff9bbec217c610
[  470.222214] R13: ffffae1e40063e08 R14: ffff9bbec217cb80 R15: ffff9bbec5011750
[  470.222610] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  470.223052] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  470.223390] CR2: 00007f69a5860270 CR3: 0000000007bb6004 CR4: 0000000000770ef0
[  470.223917] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  470.224427] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  470.224961] PKRU: 55555554
[  470.225179] Call Trace:
[  470.225402]  <TASK>
[  470.225613] ? __warn (kernel/panic.c:677) 
[  470.225896] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.226264] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  470.226572] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  470.226860] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  470.227190] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  470.227543] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.227914] br_dev_delete (net/bridge/br_if.c:396) 
[  470.228231] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  470.228594] cleanup_net (net/core/net_namespace.c:630) 
[  470.228920] ? process_one_work (kernel/workqueue.c:2606) 
[  470.229266] process_one_work (kernel/workqueue.c:2633) 
[  470.229610] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  470.229937] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  470.230285] kthread (kernel/kthread.c:388) 
[  470.230557] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.230918] ret_from_fork (arch/x86/kernel/process.c:147) 
[  470.231233] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.231547] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  470.335233] ------------[ cut here ]------------
| [  470.335625] sysfs group 'bridge' not found for kobject 'br0'
| [  470.336094] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  470.336710] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  470.338055] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  470.338883] Workqueue: netns cleanup_net
[  470.339136] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 470.339438] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  470.340403] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  470.340682] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffeb3e
[  470.341076] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  470.341479] RBP: 0000000000000000 R08: ffffffff99d592f0 R09: 00000000ffffeb3e
[  470.341867] R10: ffffffff99c98520 R11: ffffffff99d592f0 R12: ffff9bbec2178610
[  470.342241] R13: ffffae1e40063e08 R14: ffff9bbec2178b80 R15: ffff9bbec2bf2e50
[  470.342629] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  470.343071] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  470.343389] CR2: 00007f69a5860270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  470.343764] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  470.344153] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  470.344544] PKRU: 55555554
[  470.344717] Call Trace:
[  470.344859]  <TASK>
[  470.345007] ? __warn (kernel/panic.c:677) 
[  470.345210] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.345447] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  470.345654] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  470.345863] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  470.346102] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  470.346346] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.346574] br_dev_delete (net/bridge/br_if.c:396) 
[  470.346788] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  470.347053] cleanup_net (net/core/net_namespace.c:630) 
[  470.347272] ? process_one_work (kernel/workqueue.c:2606) 
[  470.347500] process_one_work (kernel/workqueue.c:2633) 
[  470.347742] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  470.347975] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  470.348220] kthread (kernel/kthread.c:388) 
[  470.348402] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.348625] ret_from_fork (arch/x86/kernel/process.c:147) 
[  470.348846] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.349068] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  470.352646] ------------[ cut here ]------------
| [  470.353012] sysfs group 'bridge' not found for kobject 'br0'
| [  470.353484] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  470.354108] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  470.355426] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  470.356290] Workqueue: netns cleanup_net
[  470.356633] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 470.357036] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  470.358045] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  470.358432] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffeb6f
[  470.358861] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  470.359260] RBP: 0000000000000000 R08: ffffffff99d59788 R09: 00000000ffffeb6f
[  470.359729] R10: ffffffff99c98520 R11: ffffffff99d59788 R12: ffff9bbec5280610
[  470.360273] R13: ffffae1e40063e08 R14: ffff9bbec5280b80 R15: ffff9bbec2bf2e50
[  470.360700] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  470.361339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  470.361792] CR2: 00007f69a5860270 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  470.362331] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  470.362886] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  470.363448] PKRU: 55555554
[  470.363680] Call Trace:
[  470.363913]  <TASK>
[  470.364085] ? __warn (kernel/panic.c:677) 
[  470.364337] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.364665] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  470.364960] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  470.365259] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  470.365599] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  470.365961] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.366307] br_dev_delete (net/bridge/br_if.c:396) 
[  470.366612] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  470.366979] cleanup_net (net/core/net_namespace.c:630) 
[  470.367292] ? process_one_work (kernel/workqueue.c:2606) 
[  470.367644] process_one_work (kernel/workqueue.c:2633) 
[  470.367978] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  470.368289] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  470.368562] kthread (kernel/kthread.c:388) 
[  470.368756] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.368975] ret_from_fork (arch/x86/kernel/process.c:147) 
[  470.369172] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.369375] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  470.519181] ------------[ cut here ]------------
| [  470.519708] sysfs group 'bridge' not found for kobject 'br0'
| [  470.520285] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  470.521459] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  470.522940] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  470.523823] Workqueue: netns cleanup_net
[  470.524152] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 470.524535] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  470.525924] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  470.526323] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffeba3
[  470.526863] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  470.527429] RBP: 0000000000000000 R08: ffffffff99d59c68 R09: 00000000ffffeba3
[  470.527993] R10: ffffffff99c98520 R11: ffffffff99d59c68 R12: ffff9bbec38ec610
[  470.528542] R13: ffffae1e40063e08 R14: ffff9bbec38ecb80 R15: ffff9bbec2bf5c50
[  470.529088] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  470.529690] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  470.530142] CR2: 00007f85ffac6000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  470.530694] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  470.531263] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  470.531820] PKRU: 55555554
[  470.532050] Call Trace:
[  470.532256]  <TASK>
[  470.532438] ? __warn (kernel/panic.c:677) 
[  470.532706] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.533044] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  470.533344] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  470.533626] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  470.533945] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  470.534286] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  470.534618] br_dev_delete (net/bridge/br_if.c:396) 
[  470.534922] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  470.535273] cleanup_net (net/core/net_namespace.c:630) 
[  470.535571] ? process_one_work (kernel/workqueue.c:2606) 
[  470.535915] process_one_work (kernel/workqueue.c:2633) 
[  470.536243] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  470.536547] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  470.536888] kthread (kernel/kthread.c:388) 
[  470.537159] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.537462] ret_from_fork (arch/x86/kernel/process.c:147) 
[  470.537754] ? __pfx_kthread (kernel/kthread.c:341) 
[  470.538061] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  482.328251] ------------[ cut here ]------------
| [  482.328583] sysfs group 'bridge' not found for kobject 'br0'
| [  482.329000] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  482.329532] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  482.330682] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  482.331778] Workqueue: netns cleanup_net
[  482.332246] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 482.332872] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  482.334979] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  482.335593] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffebf1
[  482.336402] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  482.337124] RBP: 0000000000000000 R08: ffffffff99d5a3b8 R09: 00000000ffffebf1
[  482.337762] R10: ffffffff99c98520 R11: ffffffff99d5a3b8 R12: ffff9bbec3bf0610
[  482.338261] R13: ffffae1e40063e08 R14: ffff9bbec3bf0b80 R15: ffff9bbec3be2e50
[  482.338753] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  482.339290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  482.339672] CR2: 00007f4055dbe270 CR3: 000000000690a002 CR4: 0000000000770ef0
[  482.340150] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  482.340621] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  482.341110] PKRU: 55555554
[  482.341297] Call Trace:
[  482.341469]  <TASK>
[  482.341622] ? __warn (kernel/panic.c:677) 
[  482.341849] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.342138] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  482.342395] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  482.342637] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  482.342910] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  482.343202] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.343487] br_dev_delete (net/bridge/br_if.c:396) 
[  482.343737] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  482.344042] cleanup_net (net/core/net_namespace.c:630) 
[  482.344293] ? process_one_work (kernel/workqueue.c:2606) 
[  482.344579] process_one_work (kernel/workqueue.c:2633) 
[  482.344856] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  482.345120] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  482.345412] kthread (kernel/kthread.c:388) 
[  482.345633] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.345890] ret_from_fork (arch/x86/kernel/process.c:147) 
[  482.346147] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.346403] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  482.476138] ------------[ cut here ]------------
| [  482.476814] sysfs group 'bridge' not found for kobject 'br0'
| [  482.477613] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  482.478682] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  482.480943] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  482.482403] Workqueue: netns cleanup_net
[  482.482927] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 482.483490] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  482.485679] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  482.486229] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffec2b
[  482.487109] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  482.487635] RBP: 0000000000000000 R08: ffffffff99d5a928 R09: 00000000ffffec2b
[  482.488187] R10: ffffffff99c98520 R11: ffffffff99d5a928 R12: ffff9bbec3832610
[  482.488867] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffffffff9b278f90
[  482.489346] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  482.490110] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  482.490538] CR2: 00007f4055dbe270 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  482.491202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  482.491993] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  482.492773] PKRU: 55555554
[  482.493096] Call Trace:
[  482.493390]  <TASK>
[  482.493621] ? __warn (kernel/panic.c:677) 
[  482.494003] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.494489] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  482.494923] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  482.495329] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  482.495757] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  482.496250] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.496750] br_dev_delete (net/bridge/br_if.c:396) 
[  482.497177] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  482.497688] cleanup_net (net/core/net_namespace.c:630) 
[  482.498057] ? process_one_work (kernel/workqueue.c:2606) 
[  482.498476] process_one_work (kernel/workqueue.c:2633) 
[  482.498910] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  482.499328] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  482.499774] kthread (kernel/kthread.c:388) 
[  482.500152] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.500497] ret_from_fork (arch/x86/kernel/process.c:147) 
[  482.500933] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.501297] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  482.504807] ------------[ cut here ]------------
| [  482.505101] sysfs group 'bridge' not found for kobject 'br0'
| [  482.505443] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  482.505858] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  482.506853] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  482.507430] Workqueue: netns cleanup_net
[  482.507637] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 482.507985] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  482.509383] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  482.509785] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffec5c
[  482.510347] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  482.510806] RBP: 0000000000000000 R08: ffffffff99d5adc0 R09: 00000000ffffec5c
[  482.511184] R10: ffffffff99c98520 R11: ffffffff99d5adc0 R12: ffff9bbec3b5a610
[  482.511547] R13: ffffae1e40063e08 R14: ffff9bbec3b5ab80 R15: ffffffff9b278f90
[  482.511920] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  482.512327] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  482.512625] CR2: 00007f87873b9400 CR3: 0000000002790004 CR4: 0000000000770ef0
[  482.513003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  482.513463] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  482.513940] PKRU: 55555554
[  482.514132] Call Trace:
[  482.514308]  <TASK>
[  482.514462] ? __warn (kernel/panic.c:677) 
[  482.514682] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.514931] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  482.515203] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  482.515465] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  482.515720] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  482.515982] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.516294] br_dev_delete (net/bridge/br_if.c:396) 
[  482.516577] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  482.516916] cleanup_net (net/core/net_namespace.c:630) 
[  482.517208] ? process_one_work (kernel/workqueue.c:2606) 
[  482.517532] process_one_work (kernel/workqueue.c:2633) 
[  482.517845] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  482.518146] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  482.518479] kthread (kernel/kthread.c:388) 
[  482.518731] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.519033] ret_from_fork (arch/x86/kernel/process.c:147) 
[  482.519315] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.519607] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  482.523239] ------------[ cut here ]------------
| [  482.523486] sysfs group 'bridge' not found for kobject 'br0'
| [  482.523806] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  482.524228] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  482.525124] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  482.525736] Workqueue: netns cleanup_net
[  482.525972] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 482.526221] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  482.527154] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  482.527427] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffec8d
[  482.527803] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  482.528170] RBP: 0000000000000000 R08: ffffffff99d5b258 R09: 00000000ffffec8d
[  482.528534] R10: ffffffff99c98520 R11: ffffffff99d5b258 R12: ffff9bbec5284610
[  482.528909] R13: ffffae1e40063e08 R14: ffff9bbec5284b80 R15: ffffffff9b278f90
[  482.529273] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  482.529680] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  482.529985] CR2: 00007f87873b9400 CR3: 0000000002790004 CR4: 0000000000770ef0
[  482.530344] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  482.530703] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  482.531086] PKRU: 55555554
[  482.531235] Call Trace:
[  482.531367]  <TASK>
[  482.531486] ? __warn (kernel/panic.c:677) 
[  482.531659] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.531887] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  482.532087] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  482.532274] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  482.532474] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  482.532698] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  482.533011] br_dev_delete (net/bridge/br_if.c:396) 
[  482.533300] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  482.533650] cleanup_net (net/core/net_namespace.c:630) 
[  482.533877] ? process_one_work (kernel/workqueue.c:2606) 
[  482.534119] process_one_work (kernel/workqueue.c:2633) 
[  482.534436] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  482.534728] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  482.534989] kthread (kernel/kthread.c:388) 
[  482.535231] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.535468] ret_from_fork (arch/x86/kernel/process.c:147) 
[  482.535743] ? __pfx_kthread (kernel/kthread.c:341) 
[  482.536045] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  491.152259] ------------[ cut here ]------------
| [  491.152738] sysfs group 'bridge' not found for kobject 'br0'
| [  491.153283] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  491.153960] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  491.155675] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  491.156768] Workqueue: netns cleanup_net
[  491.157122] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 491.157575] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  491.159232] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  491.159719] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffecdb
[  491.160375] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  491.161062] RBP: 0000000000000000 R08: ffffffff99d5b9a8 R09: 00000000ffffecdb
[  491.161791] R10: ffffffff99c98520 R11: ffffffff99d5b9a8 R12: ffff9bbec3bf0610
[  491.162407] R13: ffffae1e40063e08 R14: ffff9bbec3bf0b80 R15: ffff9bbec5014550
[  491.162997] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  491.163601] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  491.164044] CR2: 00007f9d9552e7f0 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  491.164624] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  491.165183] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  491.165693] PKRU: 55555554
[  491.165980] Call Trace:
[  491.166206]  <TASK>
[  491.166391] ? __warn (kernel/panic.c:677) 
[  491.166715] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.167018] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  491.167220] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  491.167432] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  491.167671] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  491.167933] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.168178] br_dev_delete (net/bridge/br_if.c:396) 
[  491.168395] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  491.168652] cleanup_net (net/core/net_namespace.c:630) 
[  491.168870] ? process_one_work (kernel/workqueue.c:2606) 
[  491.169120] process_one_work (kernel/workqueue.c:2633) 
[  491.169345] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  491.169563] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  491.169819] kthread (kernel/kthread.c:388) 
[  491.170011] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.170210] ret_from_fork (arch/x86/kernel/process.c:147) 
[  491.170400] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.170596] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  491.267101] ------------[ cut here ]------------
| [  491.267538] sysfs group 'bridge' not found for kobject 'br0'
| [  491.268030] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  491.268751] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  491.269999] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  491.270718] Workqueue: netns cleanup_net
[  491.271038] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 491.271290] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  491.272436] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  491.272831] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffed12
[  491.273395] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  491.274419] RBP: 0000000000000000 R08: ffffffff99d5bed0 R09: 00000000ffffed12
[  491.275403] R10: ffffffff99c98520 R11: ffffffff99d5bed0 R12: ffff9bbec217a610
[  491.276396] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec5010050
[  491.277389] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  491.278184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  491.278770] CR2: 00007f9d9552e7f0 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  491.279388] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  491.280008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  491.280629] PKRU: 55555554
[  491.280857] Call Trace:
[  491.281179]  <TASK>
[  491.281338] ? __warn (kernel/panic.c:677) 
[  491.281663] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.282004] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  491.282312] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  491.282500] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  491.282725] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  491.283002] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.283262] br_dev_delete (net/bridge/br_if.c:396) 
[  491.283570] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  491.283800] cleanup_net (net/core/net_namespace.c:630) 
[  491.283999] ? process_one_work (kernel/workqueue.c:2606) 
[  491.284218] process_one_work (kernel/workqueue.c:2633) 
[  491.284468] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  491.284738] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  491.285114] kthread (kernel/kthread.c:388) 
[  491.285414] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.285709] ret_from_fork (arch/x86/kernel/process.c:147) 
[  491.285986] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.286285] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  491.290872] ------------[ cut here ]------------
| [  491.291440] sysfs group 'bridge' not found for kobject 'br0'
| [  491.292196] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  491.293295] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  491.294789] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  491.295888] Workqueue: netns cleanup_net
[  491.296230] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 491.296807] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  491.298847] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  491.299533] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffed43
[  491.300540] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  491.301455] RBP: 0000000000000000 R08: ffffffff99d5c368 R09: 00000000ffffed43
[  491.302453] R10: ffffffff99c98520 R11: ffffffff99d5c368 R12: ffff9bbec5284610
[  491.303344] R13: ffffae1e40063e08 R14: ffff9bbec5284b80 R15: ffff9bbec5010050
[  491.304297] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  491.305364] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  491.305970] CR2: 00007f9d9552e7f0 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  491.306594] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  491.307262] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  491.307987] PKRU: 55555554
[  491.308325] Call Trace:
[  491.308519]  <TASK>
[  491.308805] ? __warn (kernel/panic.c:677) 
[  491.309282] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.309750] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  491.310133] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  491.310508] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  491.310910] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  491.311341] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.311741] br_dev_delete (net/bridge/br_if.c:396) 
[  491.312119] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  491.312580] cleanup_net (net/core/net_namespace.c:630) 
[  491.312947] ? process_one_work (kernel/workqueue.c:2606) 
[  491.313414] process_one_work (kernel/workqueue.c:2633) 
[  491.313818] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  491.314211] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  491.314590] kthread (kernel/kthread.c:388) 
[  491.314840] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.315213] ret_from_fork (arch/x86/kernel/process.c:147) 
[  491.315560] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.315910] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  491.434157] ------------[ cut here ]------------
| [  491.434512] sysfs group 'bridge' not found for kobject 'br0'
| [  491.434979] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  491.435576] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  491.436524] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  491.437219] Workqueue: netns cleanup_net
[  491.437427] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 491.437696] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  491.438845] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  491.439187] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffed77
[  491.439664] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  491.440169] RBP: 0000000000000000 R08: ffffffff99d5c848 R09: 00000000ffffed77
[  491.440673] R10: ffffffff99c98520 R11: ffffffff99d5c848 R12: ffff9bbec3bf6610
[  491.441170] R13: ffffae1e40063e08 R14: ffff9bbec3bf6b80 R15: ffff9bbec3be5c50
[  491.441671] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  491.442259] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  491.442692] CR2: 00007f19d6e71000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  491.443157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  491.443667] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  491.444214] PKRU: 55555554
[  491.444437] Call Trace:
[  491.444644]  <TASK>
[  491.444809] ? __warn (kernel/panic.c:677) 
[  491.445082] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.445414] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  491.445694] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  491.445967] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  491.446238] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  491.446595] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  491.446850] br_dev_delete (net/bridge/br_if.c:396) 
[  491.447071] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  491.447316] cleanup_net (net/core/net_namespace.c:630) 
[  491.447539] ? process_one_work (kernel/workqueue.c:2606) 
[  491.447807] process_one_work (kernel/workqueue.c:2633) 
[  491.448062] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  491.448281] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  491.448543] kthread (kernel/kthread.c:388) 
[  491.448745] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.448980] ret_from_fork (arch/x86/kernel/process.c:147) 
[  491.449197] ? __pfx_kthread (kernel/kthread.c:341) 
[  491.449408] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  500.102249] ------------[ cut here ]------------
| [  500.102877] sysfs group 'bridge' not found for kobject 'br0'
| [  500.103417] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  500.104439] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  500.106834] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  500.108260] Workqueue: netns cleanup_net
[  500.108765] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 500.109216] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  500.110748] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  500.111211] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffedc5
[  500.111873] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  500.112450] RBP: 0000000000000000 R08: ffffffff99d5cf98 R09: 00000000ffffedc5
[  500.113081] R10: ffffffff99c98520 R11: ffffffff99d5cf98 R12: ffff9bbec38ec610
[  500.113659] R13: ffffae1e40063e08 R14: ffff9bbec38ecb80 R15: ffff9bbec3960050
[  500.114274] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  500.114772] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  500.115094] CR2: 00007f7cd8cae270 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  500.115602] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  500.116101] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  500.116655] PKRU: 55555554
[  500.116801] Call Trace:
[  500.116940]  <TASK>
[  500.117059] ? __warn (kernel/panic.c:677) 
[  500.117233] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.117488] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  500.117799] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  500.118137] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  500.118422] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  500.118650] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.118986] br_dev_delete (net/bridge/br_if.c:396) 
[  500.119282] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  500.119690] cleanup_net (net/core/net_namespace.c:630) 
[  500.120019] ? process_one_work (kernel/workqueue.c:2606) 
[  500.120389] process_one_work (kernel/workqueue.c:2633) 
[  500.120842] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  500.121203] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  500.121623] kthread (kernel/kthread.c:388) 
[  500.121942] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.122282] ret_from_fork (arch/x86/kernel/process.c:147) 
[  500.122637] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.122973] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  500.236215] ------------[ cut here ]------------
| [  500.236892] sysfs group 'bridge' not found for kobject 'br0'
| [  500.237598] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  500.238666] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  500.240580] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  500.241655] Workqueue: netns cleanup_net
[  500.241974] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 500.242330] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  500.244119] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  500.244716] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffedfc
[  500.245446] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  500.246422] RBP: 0000000000000000 R08: ffffffff99d5d4c0 R09: 00000000ffffedfc
[  500.247523] R10: ffffffff99c98520 R11: ffffffff99d5d4c0 R12: ffff9bbec5284610
[  500.248466] R13: ffffae1e40063e08 R14: ffff9bbec5284b80 R15: ffff9bbec3be5c50
[  500.249390] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  500.250626] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  500.251492] CR2: 00007f7cd8cae270 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  500.252300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  500.252894] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  500.253442] PKRU: 55555554
[  500.253655] Call Trace:
[  500.253856]  <TASK>
[  500.254045] ? __warn (kernel/panic.c:677) 
[  500.254367] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.254842] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  500.255176] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  500.255560] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  500.256094] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  500.256704] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.257342] br_dev_delete (net/bridge/br_if.c:396) 
[  500.257919] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  500.258546] cleanup_net (net/core/net_namespace.c:630) 
[  500.259018] ? process_one_work (kernel/workqueue.c:2606) 
[  500.259516] process_one_work (kernel/workqueue.c:2633) 
[  500.260015] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  500.260470] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  500.261122] kthread (kernel/kthread.c:388) 
[  500.261504] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.261971] ret_from_fork (arch/x86/kernel/process.c:147) 
[  500.262516] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.262958] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  500.267990] ------------[ cut here ]------------
| [  500.268411] sysfs group 'bridge' not found for kobject 'br0'
| [  500.268953] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  500.269634] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  500.271570] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  500.272915] Workqueue: netns cleanup_net
[  500.273311] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 500.273792] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  500.275819] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  500.276390] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffee2d
[  500.277199] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  500.277948] RBP: 0000000000000000 R08: ffffffff99d5d958 R09: 00000000ffffee2d
[  500.278585] R10: ffffffff99c98520 R11: ffffffff99d5d958 R12: ffff9bbec50ec610
[  500.279274] R13: ffffae1e40063e08 R14: ffff9bbec50ecb80 R15: ffff9bbec3be5c50
[  500.279935] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  500.280608] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  500.281148] CR2: 00007f7cd8cae270 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  500.281591] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  500.282042] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  500.282458] PKRU: 55555554
[  500.282602] Call Trace:
[  500.282746]  <TASK>
[  500.282864] ? __warn (kernel/panic.c:677) 
[  500.283057] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.283285] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  500.283520] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  500.283730] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  500.283939] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  500.284176] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.284393] br_dev_delete (net/bridge/br_if.c:396) 
[  500.284593] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  500.284825] cleanup_net (net/core/net_namespace.c:630) 
[  500.285025] ? process_one_work (kernel/workqueue.c:2606) 
[  500.285259] process_one_work (kernel/workqueue.c:2633) 
[  500.285483] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  500.285703] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  500.285944] kthread (kernel/kthread.c:388) 
[  500.286118] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.286321] ret_from_fork (arch/x86/kernel/process.c:147) 
[  500.286528] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.286731] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  500.388165] ------------[ cut here ]------------
| [  500.388494] sysfs group 'bridge' not found for kobject 'br0'
| [  500.388972] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  500.389502] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  500.391074] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  500.392457] Workqueue: netns cleanup_net
[  500.393056] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 500.393696] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  500.395596] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  500.396144] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffee61
[  500.396799] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  500.397524] RBP: 0000000000000000 R08: ffffffff99d5de38 R09: 00000000ffffee61
[  500.398215] R10: ffffffff99c98520 R11: ffffffff99d5de38 R12: ffff9bbec38e8610
[  500.398856] R13: ffffae1e40063e08 R14: ffff9bbec38e8b80 R15: ffff9bbec3be0050
[  500.399535] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  500.400423] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  500.401033] CR2: 00007f7cd8cae270 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  500.401518] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  500.402036] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  500.402600] PKRU: 55555554
[  500.402857] Call Trace:
[  500.403035]  <TASK>
[  500.403190] ? __warn (kernel/panic.c:677) 
[  500.403413] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.403779] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  500.404269] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  500.404521] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  500.404930] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  500.405440] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  500.406004] br_dev_delete (net/bridge/br_if.c:396) 
[  500.406486] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  500.407099] cleanup_net (net/core/net_namespace.c:630) 
[  500.407486] ? process_one_work (kernel/workqueue.c:2606) 
[  500.407934] process_one_work (kernel/workqueue.c:2633) 
[  500.408365] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  500.408731] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  500.409166] kthread (kernel/kthread.c:388) 
[  500.409497] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.409854] ret_from_fork (arch/x86/kernel/process.c:147) 
[  500.410200] ? __pfx_kthread (kernel/kthread.c:341) 
[  500.410605] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  508.932194] ------------[ cut here ]------------
| [  508.932688] sysfs group 'bridge' not found for kobject 'br0'
| [  508.933091] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  508.933783] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  508.935390] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  508.936475] Workqueue: netns cleanup_net
[  508.936848] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 508.937343] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  508.939095] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  508.939594] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffeeaf
[  508.940258] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  508.940931] RBP: 0000000000000000 R08: ffffffff99d5e588 R09: 00000000ffffeeaf
[  508.941505] R10: ffffffff99c98520 R11: ffffffff99d5e588 R12: ffff9bbec217a610
[  508.942147] R13: ffffae1e40063e08 R14: ffff9bbec217ab80 R15: ffff9bbec3be4550
[  508.942770] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  508.943437] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  508.943973] CR2: 00007fae043d0000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  508.944586] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  508.945175] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  508.945852] PKRU: 55555554
[  508.946159] Call Trace:
[  508.946413]  <TASK>
[  508.946530] ? __warn (kernel/panic.c:677) 
[  508.946715] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  508.946953] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  508.947207] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  508.947435] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  508.947695] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  508.948037] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  508.948299] br_dev_delete (net/bridge/br_if.c:396) 
[  508.948519] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  508.948935] cleanup_net (net/core/net_namespace.c:630) 
[  508.949154] ? process_one_work (kernel/workqueue.c:2606) 
[  508.949384] process_one_work (kernel/workqueue.c:2633) 
[  508.949614] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  508.949824] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  508.950155] kthread (kernel/kthread.c:388) 
[  508.950452] ? __pfx_kthread (kernel/kthread.c:341) 
[  508.950792] ret_from_fork (arch/x86/kernel/process.c:147) 
[  508.951038] ? __pfx_kthread (kernel/kthread.c:341) 
[  508.951252] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  509.051171] ------------[ cut here ]------------
| [  509.051591] sysfs group 'bridge' not found for kobject 'br0'
| [  509.052097] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  509.052694] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  509.053709] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  509.054316] Workqueue: netns cleanup_net
[  509.054558] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 509.054968] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  509.056275] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  509.056819] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffeee6
[  509.057515] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  509.058251] RBP: 0000000000000000 R08: ffffffff99d5eab0 R09: 00000000ffffeee6
[  509.058930] R10: ffffffff99c98520 R11: ffffffff99d5eab0 R12: ffff9bbec50ea610
[  509.059613] R13: ffffae1e40063e08 R14: ffff9bbec50eab80 R15: ffff9bbec3be0050
[  509.060331] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  509.061163] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  509.061729] CR2: 00007fe044d59000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  509.062307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  509.062894] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  509.063472] PKRU: 55555554
[  509.063720] Call Trace:
[  509.063949]  <TASK>
[  509.064108] ? __warn (kernel/panic.c:677) 
[  509.064418] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  509.064771] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  509.065117] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  509.065305] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  509.065506] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  509.065754] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  509.066017] br_dev_delete (net/bridge/br_if.c:396) 
[  509.066322] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  509.066579] cleanup_net (net/core/net_namespace.c:630) 
[  509.066773] ? process_one_work (kernel/workqueue.c:2606) 
[  509.066996] process_one_work (kernel/workqueue.c:2633) 
[  509.067213] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  509.067412] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  509.067739] kthread (kernel/kthread.c:388) 
[  509.068044] ? __pfx_kthread (kernel/kthread.c:341) 
[  509.068392] ret_from_fork (arch/x86/kernel/process.c:147) 
[  509.068618] ? __pfx_kthread (kernel/kthread.c:341) 
[  509.068839] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  509.073396] ------------[ cut here ]------------
| [  509.073795] sysfs group 'bridge' not found for kobject 'br0'
| [  509.074284] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  509.074939] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  509.076362] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  509.077345] Workqueue: netns cleanup_net
[  509.077674] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 509.078104] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  509.079606] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  509.080086] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffef17
[  509.080688] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  509.081173] RBP: 0000000000000000 R08: ffffffff99d5ef48 R09: 00000000ffffef17
[  509.081614] R10: ffffffff99c98520 R11: ffffffff99d5ef48 R12: ffff9bbec217c610
[  509.082107] R13: ffffae1e40063e08 R14: ffff9bbec217cb80 R15: ffff9bbec3be0050
[  509.082518] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  509.082941] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  509.083267] CR2: 00007fe044d59000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  509.083884] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  509.084442] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  509.085092] PKRU: 55555554
[  509.085331] Call Trace:
[  509.085467]  <TASK>
[  509.085587] ? __warn (kernel/panic.c:677) 
[  509.085780] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  509.086179] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  509.086538] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  509.086910] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  509.087317] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  509.087823] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  509.088276] br_dev_delete (net/bridge/br_if.c:396) 
[  509.088645] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  509.089091] cleanup_net (net/core/net_namespace.c:630) 
[  509.089467] ? process_one_work (kernel/workqueue.c:2606) 
[  509.089840] process_one_work (kernel/workqueue.c:2633) 
[  509.090249] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  509.090683] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  509.091145] kthread (kernel/kthread.c:388) 
[  509.091467] ? __pfx_kthread (kernel/kthread.c:341) 
[  509.091820] ret_from_fork (arch/x86/kernel/process.c:147) 
[  509.092023] ? __pfx_kthread (kernel/kthread.c:341) 
[  509.092274] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  509.216160] ------------[ cut here ]------------
| [  509.216682] sysfs group 'bridge' not found for kobject 'br0'
| [  509.217191] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  509.217976] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  509.219477] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  509.220259] Workqueue: netns cleanup_net
[  509.220502] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 509.220790] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  509.222162] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  509.222462] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffef4b
[  509.222854] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  509.223361] RBP: 0000000000000000 R08: ffffffff99d5f428 R09: 00000000ffffef4b
[  509.224051] R10: ffffffff99c98520 R11: ffffffff99d5f428 R12: ffff9bbec538e610
[  509.224482] R13: ffffae1e40063e08 R14: ffff9bbec538eb80 R15: ffff9bbec3be1750
[  509.225128] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  509.225957] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  509.226560] CR2: 00007fe044d59000 CR3: 000000003ce60001 CR4: 0000000000770ef0
[  509.227245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  509.227964] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  509.228588] PKRU: 55555554
[  509.228842] Call Trace:
[  509.229118]  <TASK>
[  509.229319] ? __warn (kernel/panic.c:677) 
[  509.229611] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  509.229997] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  509.230323] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  509.230656] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  509.231004] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  509.231387] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  509.231755] br_dev_delete (net/bridge/br_if.c:396) 
[  509.232085] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  509.232495] cleanup_net (net/core/net_namespace.c:630) 
[  509.232830] ? process_one_work (kernel/workqueue.c:2606) 
[  509.233218] process_one_work (kernel/workqueue.c:2633) 
[  509.233611] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  509.233980] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  509.234397] kthread (kernel/kthread.c:388) 
[  509.234689] ? __pfx_kthread (kernel/kthread.c:341) 
[  509.235032] ret_from_fork (arch/x86/kernel/process.c:147) 
[  509.235369] ? __pfx_kthread (kernel/kthread.c:341) 
[  509.235675] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  517.984319] ------------[ cut here ]------------
| [  517.984610] sysfs group 'bridge' not found for kobject 'br0'
| [  517.984932] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  517.985351] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  517.986238] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  517.986809] Workqueue: netns cleanup_net
[  517.987022] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 517.987273] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  517.988359] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  517.988742] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffef99
[  517.989342] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  517.989855] RBP: 0000000000000000 R08: ffffffff99d5fb78 R09: 00000000ffffef99
[  517.990477] R10: ffffffff99c98520 R11: ffffffff99d5fb78 R12: ffff9bbec3830610
[  517.991078] R13: ffffae1e40063e08 R14: ffff9bbec3830b80 R15: ffff9bbec3be0050
[  517.991595] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  517.992042] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  517.992414] CR2: 00007f36fdf56270 CR3: 0000000003ba6005 CR4: 0000000000770ef0
[  517.992816] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  517.993206] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  517.993592] PKRU: 55555554
[  517.993749] Call Trace:
[  517.993892]  <TASK>
[  517.994028] ? __warn (kernel/panic.c:677) 
[  517.994222] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  517.994457] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  517.994667] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  517.994871] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  517.995097] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  517.995342] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  517.995571] br_dev_delete (net/bridge/br_if.c:396) 
[  517.995780] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  517.996043] cleanup_net (net/core/net_namespace.c:630) 
[  517.996249] ? process_one_work (kernel/workqueue.c:2606) 
[  517.996488] process_one_work (kernel/workqueue.c:2633) 
[  517.996717] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  517.996939] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  517.997177] kthread (kernel/kthread.c:388) 
[  517.997357] ? __pfx_kthread (kernel/kthread.c:341) 
[  517.997580] ret_from_fork (arch/x86/kernel/process.c:147) 
[  517.997771] ? __pfx_kthread (kernel/kthread.c:341) 
[  517.997975] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  518.091203] ------------[ cut here ]------------
| [  518.092255] sysfs group 'bridge' not found for kobject 'br0'
| [  518.093252] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  518.094683] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  518.097744] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  518.098834] Workqueue: netns cleanup_net
[  518.099201] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 518.099949] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  518.102780] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  518.103674] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000ffffefd0
[  518.104867] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  518.106086] RBP: 0000000000000000 R08: ffffffff99d600a0 R09: 00000000ffffefd0
[  518.107267] R10: ffffffff99c98520 R11: ffffffff99d600a0 R12: ffff9bbec50ea610
[  518.108350] R13: ffffae1e40063e08 R14: ffff9bbec50eab80 R15: ffff9bbec3be1750
[  518.109416] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  518.110602] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  518.111483] CR2: 00007fb594dd7000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  518.112494] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  518.113148] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  518.114041] PKRU: 55555554
[  518.114292] Call Trace:
[  518.114519]  <TASK>
[  518.114722] ? __warn (kernel/panic.c:677) 
[  518.115058] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  518.115640] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  518.116112] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  518.116579] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  518.117196] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  518.117999] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  518.118740] br_dev_delete (net/bridge/br_if.c:396) 
[  518.119350] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  518.120097] cleanup_net (net/core/net_namespace.c:630) 
[  518.120722] ? process_one_work (kernel/workqueue.c:2606) 
[  518.121480] process_one_work (kernel/workqueue.c:2633) 
[  518.122200] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  518.122891] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  518.123710] kthread (kernel/kthread.c:388) 
[  518.124251] ? __pfx_kthread (kernel/kthread.c:341) 
[  518.124882] ret_from_fork (arch/x86/kernel/process.c:147) 
[  518.125469] ? __pfx_kthread (kernel/kthread.c:341) 
[  518.126089] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  518.132251] ------------[ cut here ]------------
| [  518.132652] sysfs group 'bridge' not found for kobject 'br0'
| [  518.133271] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  518.133856] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  518.135463] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  518.136547] Workqueue: netns cleanup_net
[  518.136935] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 518.137358] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  518.139706] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  518.140510] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff001
[  518.141617] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  518.142719] RBP: 0000000000000000 R08: ffffffff99d60538 R09: 00000000fffff001
[  518.143422] R10: ffffffff99c98520 R11: ffffffff99d60538 R12: ffff9bbec50ec610
[  518.144079] R13: ffffae1e40063e08 R14: ffff9bbec50ecb80 R15: ffff9bbec3be1750
[  518.144620] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  518.145234] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  518.145677] CR2: 00007ffc097f1e28 CR3: 00000000026cc003 CR4: 0000000000770ef0
[  518.146224] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  518.146798] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  518.147430] PKRU: 55555554
[  518.147719] Call Trace:
[  518.147894]  <TASK>
[  518.148019] ? __warn (kernel/panic.c:677) 
[  518.148194] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  518.148460] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  518.148778] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  518.149070] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  518.149396] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  518.149794] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  518.150157] br_dev_delete (net/bridge/br_if.c:396) 
[  518.150481] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  518.150861] cleanup_net (net/core/net_namespace.c:630) 
[  518.151195] ? process_one_work (kernel/workqueue.c:2606) 
[  518.151573] process_one_work (kernel/workqueue.c:2633) 
[  518.151977] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  518.152392] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  518.152786] kthread (kernel/kthread.c:388) 
[  518.153084] ? __pfx_kthread (kernel/kthread.c:341) 
[  518.153425] ret_from_fork (arch/x86/kernel/process.c:147) 
[  518.153773] ? __pfx_kthread (kernel/kthread.c:341) 
[  518.154111] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  518.269224] ------------[ cut here ]------------
| [  518.269898] sysfs group 'bridge' not found for kobject 'br0'
| [  518.270632] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  518.271649] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  518.273792] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  518.275513] Workqueue: netns cleanup_net
[  518.276105] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 518.276822] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  518.279170] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  518.279835] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff035
[  518.280743] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  518.281522] RBP: 0000000000000000 R08: ffffffff99d60a18 R09: 00000000fffff035
[  518.282087] R10: ffffffff99c98520 R11: ffffffff99d60a18 R12: ffff9bbec5284610
[  518.282713] R13: ffffae1e40063e08 R14: ffff9bbec5284b80 R15: ffff9bbec3be4550
[  518.283465] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  518.283875] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  518.284293] CR2: 00007ffc097f1e28 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  518.285140] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  518.285546] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  518.286287] PKRU: 55555554
[  518.286663] Call Trace:
[  518.287039]  <TASK>
[  518.287365] ? __warn (kernel/panic.c:677) 
[  518.287817] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  518.288452] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  518.288966] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  518.289477] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  518.290004] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  518.290623] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  518.291239] br_dev_delete (net/bridge/br_if.c:396) 
[  518.291753] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  518.292375] cleanup_net (net/core/net_namespace.c:630) 
[  518.292886] ? process_one_work (kernel/workqueue.c:2606) 
[  518.293489] process_one_work (kernel/workqueue.c:2633) 
[  518.294040] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  518.294556] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  518.295128] kthread (kernel/kthread.c:388) 
[  518.295474] ? __pfx_kthread (kernel/kthread.c:341) 
[  518.295980] ret_from_fork (arch/x86/kernel/process.c:147) 
[  518.296414] ? __pfx_kthread (kernel/kthread.c:341) 
[  518.296930] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  555.929121] ------------[ cut here ]------------
| [  555.929380] sysfs group 'bridge' not found for kobject 'br0'
| [  555.929724] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  555.930166] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  555.931146] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  555.931743] Workqueue: netns cleanup_net
[  555.931983] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 555.932269] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  555.933232] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  555.933537] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff083
[  555.933936] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  555.934313] RBP: 0000000000000000 R08: ffffffff99d61168 R09: 00000000fffff083
[  555.934698] R10: ffffffff99c98520 R11: ffffffff99d61168 R12: ffff9bbec1936610
[  555.935102] R13: ffffae1e40063e08 R14: ffff9bbec1936b80 R15: ffff9bbec3961750
[  555.935491] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  555.935918] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  555.936239] CR2: 00007f843605f000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  555.936633] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  555.937027] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  555.937403] PKRU: 55555554
[  555.937576] Call Trace:
[  555.937751]  <TASK>
[  555.937897] ? __warn (kernel/panic.c:677) 
[  555.938097] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  555.938346] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  555.938586] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  555.938796] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  555.939023] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  555.939280] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  555.939546] br_dev_delete (net/bridge/br_if.c:396) 
[  555.939776] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  555.940028] cleanup_net (net/core/net_namespace.c:630) 
[  555.940256] ? process_one_work (kernel/workqueue.c:2606) 
[  555.940513] process_one_work (kernel/workqueue.c:2633) 
[  555.940768] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  555.941001] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  555.941261] kthread (kernel/kthread.c:388) 
[  555.941472] ? __pfx_kthread (kernel/kthread.c:341) 
[  555.941705] ret_from_fork (arch/x86/kernel/process.c:147) 
[  555.941923] ? __pfx_kthread (kernel/kthread.c:341) 
[  555.942152] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  556.085157] ------------[ cut here ]------------
| [  556.085578] sysfs group 'bridge' not found for kobject 'br0'
| [  556.086097] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  556.086741] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  556.088075] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  556.089063] Workqueue: netns cleanup_net
[  556.089580] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 556.090027] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  556.091690] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  556.091971] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff0ba
[  556.092399] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  556.092805] RBP: 0000000000000000 R08: ffffffff99d61690 R09: 00000000fffff0ba
[  556.093396] R10: ffffffff99c98520 R11: ffffffff99d61690 R12: ffff9bbec3b22610
[  556.093769] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffff9bbec3be4550
[  556.094140] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  556.094603] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  556.095098] CR2: 00007fda9b453000 CR3: 000000003ce60005 CR4: 0000000000770ef0
[  556.095549] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  556.096062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  556.096686] PKRU: 55555554
[  556.096962] Call Trace:
[  556.097196]  <TASK>
[  556.097414] ? __warn (kernel/panic.c:677) 
[  556.097726] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  556.098110] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  556.098451] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  556.098779] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  556.099203] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  556.099651] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  556.100094] br_dev_delete (net/bridge/br_if.c:396) 
[  556.100455] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  556.100999] cleanup_net (net/core/net_namespace.c:630) 
[  556.101422] ? process_one_work (kernel/workqueue.c:2606) 
[  556.101921] process_one_work (kernel/workqueue.c:2633) 
[  556.102456] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  556.102852] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  556.103353] kthread (kernel/kthread.c:388) 
[  556.103614] ? __pfx_kthread (kernel/kthread.c:341) 
[  556.103982] ret_from_fork (arch/x86/kernel/process.c:147) 
[  556.104317] ? __pfx_kthread (kernel/kthread.c:341) 
[  556.104702] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  556.108959] ------------[ cut here ]------------
| [  556.109518] sysfs group 'bridge' not found for kobject 'br0'
| [  556.109993] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  556.110637] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  556.112884] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  556.114257] Workqueue: netns cleanup_net
[  556.114720] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 556.115420] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  556.118429] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  556.119279] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff0eb
[  556.120394] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  556.121467] RBP: 0000000000000000 R08: ffffffff99d61b28 R09: 00000000fffff0eb
[  556.122487] R10: ffffffff99c98520 R11: ffffffff99d61b28 R12: ffff9bbec38ea610
[  556.123503] R13: ffffae1e40063e08 R14: ffff9bbec38eab80 R15: ffff9bbec3be4550
[  556.124531] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  556.125404] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  556.125977] CR2: 00007fee4324a000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  556.126529] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  556.127271] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  556.128140] PKRU: 55555554
[  556.128484] Call Trace:
[  556.128844]  <TASK>
[  556.129261] ? __warn (kernel/panic.c:677) 
[  556.129818] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  556.130516] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  556.131139] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  556.131760] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  556.132351] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  556.133112] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  556.133790] br_dev_delete (net/bridge/br_if.c:396) 
[  556.134454] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  556.135194] cleanup_net (net/core/net_namespace.c:630) 
[  556.135804] ? process_one_work (kernel/workqueue.c:2606) 
[  556.136478] process_one_work (kernel/workqueue.c:2633) 
[  556.137213] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  556.137861] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  556.138505] kthread (kernel/kthread.c:388) 
[  556.138932] ? __pfx_kthread (kernel/kthread.c:341) 
[  556.139472] ret_from_fork (arch/x86/kernel/process.c:147) 
[  556.140008] ? __pfx_kthread (kernel/kthread.c:341) 
[  556.140554] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  556.266176] ------------[ cut here ]------------
| [  556.266708] sysfs group 'bridge' not found for kobject 'br0'
| [  556.267367] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  556.268175] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  556.270009] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  556.271316] Workqueue: netns cleanup_net
[  556.271659] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 556.272077] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  556.273146] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  556.273417] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff11f
[  556.273778] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  556.274315] RBP: 0000000000000000 R08: ffffffff99d62008 R09: 00000000fffff11f
[  556.275032] R10: ffffffff99c98520 R11: ffffffff99d62008 R12: ffff9bbec38ee610
[  556.275522] R13: ffffae1e40063e08 R14: ffff9bbec38eeb80 R15: ffff9bbec3be2e50
[  556.276391] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  556.277362] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  556.278065] CR2: 00007fd8cbd09000 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  556.279106] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  556.279726] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  556.280314] PKRU: 55555554
[  556.280588] Call Trace:
[  556.280849]  <TASK>
[  556.281066] ? __warn (kernel/panic.c:677) 
[  556.281426] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  556.281934] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  556.282369] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  556.282837] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  556.283307] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  556.283747] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  556.284185] br_dev_delete (net/bridge/br_if.c:396) 
[  556.284554] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  556.285066] cleanup_net (net/core/net_namespace.c:630) 
[  556.285401] ? process_one_work (kernel/workqueue.c:2606) 
[  556.285791] process_one_work (kernel/workqueue.c:2633) 
[  556.286191] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  556.286539] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  556.286973] kthread (kernel/kthread.c:388) 
[  556.287355] ? __pfx_kthread (kernel/kthread.c:341) 
[  556.287712] ret_from_fork (arch/x86/kernel/process.c:147) 
[  556.287925] ? __pfx_kthread (kernel/kthread.c:341) 
[  556.288175] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  593.844138] ------------[ cut here ]------------
| [  593.844591] sysfs group 'bridge' not found for kobject 'br0'
| [  593.845168] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  593.845962] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  593.847647] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  593.848733] Workqueue: netns cleanup_net
[  593.849074] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 593.849503] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  593.851249] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  593.851760] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff16d
[  593.852474] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  593.853145] RBP: 0000000000000000 R08: ffffffff99d62758 R09: 00000000fffff16d
[  593.853764] R10: ffffffff99c98520 R11: ffffffff99d62758 R12: ffff9bbec39bc610
[  593.854419] R13: ffffae1e40063e08 R14: ffff9bbec39bcb80 R15: ffff9bbec5012e50
[  593.855065] FS:  0000000000000000(0000) GS:ffff9bbefed80000(0000) knlGS:0000000000000000
[  593.855513] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  593.855877] CR2: 00007f706c112270 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  593.856381] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  593.856841] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  593.857406] PKRU: 55555554
[  593.857549] Call Trace:
[  593.857684]  <TASK>
[  593.857801] ? __warn (kernel/panic.c:677) 
[  593.857982] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  593.858260] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  593.858550] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  593.858867] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  593.859225] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  593.859524] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  593.859746] br_dev_delete (net/bridge/br_if.c:396) 
[  593.860035] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  593.860385] cleanup_net (net/core/net_namespace.c:630) 
[  593.860742] ? process_one_work (kernel/workqueue.c:2606) 
[  593.861160] process_one_work (kernel/workqueue.c:2633) 
[  593.861606] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  593.862027] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  593.862530] kthread (kernel/kthread.c:388) 
[  593.862884] ? __pfx_kthread (kernel/kthread.c:341) 
[  593.863282] ret_from_fork (arch/x86/kernel/process.c:147) 
[  593.863665] ? __pfx_kthread (kernel/kthread.c:341) 
[  593.864035] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  593.985244] ------------[ cut here ]------------
| [  593.985950] sysfs group 'bridge' not found for kobject 'br0'
| [  593.986868] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  593.988014] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  593.990459] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  593.991992] Workqueue: netns cleanup_net
[  593.992587] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 593.993231] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  593.995693] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  593.996393] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff1a4
[  593.997256] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  593.997619] RBP: 0000000000000000 R08: ffffffff99d62c80 R09: 00000000fffff1a4
[  593.998045] R10: ffffffff99c98520 R11: ffffffff99d62c80 R12: ffff9bbec50ec610
[  593.998479] R13: ffffae1e40063e08 R14: ffff9bbec50ecb80 R15: ffff9bbec3be2e50
[  593.999194] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  593.999765] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  594.000198] CR2: 00007efc14787000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  594.000708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  594.001409] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  594.002112] PKRU: 55555554
[  594.002315] Call Trace:
[  594.002605]  <TASK>
[  594.002877] ? __warn (kernel/panic.c:677) 
[  594.003384] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  594.004023] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  594.004589] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  594.005134] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  594.005713] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  594.006345] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  594.006961] br_dev_delete (net/bridge/br_if.c:396) 
[  594.007495] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  594.008156] cleanup_net (net/core/net_namespace.c:630) 
[  594.008691] ? process_one_work (kernel/workqueue.c:2606) 
[  594.009314] process_one_work (kernel/workqueue.c:2633) 
[  594.009943] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  594.010545] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  594.011223] kthread (kernel/kthread.c:388) 
[  594.011630] ? __pfx_kthread (kernel/kthread.c:341) 
[  594.012188] ret_from_fork (arch/x86/kernel/process.c:147) 
[  594.012704] ? __pfx_kthread (kernel/kthread.c:341) 
[  594.013216] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  594.018037] ------------[ cut here ]------------
| [  594.018336] sysfs group 'bridge' not found for kobject 'br0'
| [  594.018696] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  594.019633] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  594.021644] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  594.022670] Workqueue: netns cleanup_net
[  594.023272] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 594.024017] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  594.026831] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  594.027645] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff1d5
[  594.028758] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  594.029830] RBP: 0000000000000000 R08: ffffffff99d63118 R09: 00000000fffff1d5
[  594.030562] R10: ffffffff99c98520 R11: ffffffff99d63118 R12: ffff9bbec52a4610
[  594.030955] R13: ffffae1e40063e08 R14: ffff9bbec52a4b80 R15: ffff9bbec3be2e50
[  594.031558] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  594.032134] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  594.032428] CR2: 00007efc14787000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  594.033047] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  594.033751] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  594.034281] PKRU: 55555554
[  594.034646] Call Trace:
[  594.034967]  <TASK>
[  594.035295] ? __warn (kernel/panic.c:677) 
[  594.035802] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  594.036427] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  594.036962] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  594.037442] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  594.037995] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  594.038553] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  594.039193] br_dev_delete (net/bridge/br_if.c:396) 
[  594.039757] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  594.040412] cleanup_net (net/core/net_namespace.c:630) 
[  594.040938] ? process_one_work (kernel/workqueue.c:2606) 
[  594.041542] process_one_work (kernel/workqueue.c:2633) 
[  594.042134] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  594.042636] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  594.043217] kthread (kernel/kthread.c:388) 
[  594.043553] ? __pfx_kthread (kernel/kthread.c:341) 
[  594.044067] ret_from_fork (arch/x86/kernel/process.c:147) 
[  594.044518] ? __pfx_kthread (kernel/kthread.c:341) 
[  594.045059] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  594.173229] ------------[ cut here ]------------
| [  594.173951] sysfs group 'bridge' not found for kobject 'br0'
| [  594.174814] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  594.176057] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  594.178544] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  594.180190] Workqueue: netns cleanup_net
[  594.180713] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 594.181405] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  594.183651] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  594.184098] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff209
[  594.184749] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  594.185483] RBP: 0000000000000000 R08: ffffffff99d635f8 R09: 00000000fffff209
[  594.186062] R10: ffffffff99c98520 R11: ffffffff99d635f8 R12: ffff9bbec52a0610
[  594.186831] R13: ffffae1e40063e08 R14: ffff9bbec52a0b80 R15: ffff9bbec5010050
[  594.187528] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  594.188537] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  594.189356] CR2: 00007efc14787000 CR3: 000000003ce60003 CR4: 0000000000770ef0
[  594.190365] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  594.191364] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  594.192330] PKRU: 55555554
[  594.192726] Call Trace:
[  594.193141]  <TASK>
[  594.193478] ? __warn (kernel/panic.c:677) 
[  594.193980] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  594.194575] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  594.195128] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  594.195616] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  594.196207] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  594.196709] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  594.197264] br_dev_delete (net/bridge/br_if.c:396) 
[  594.197773] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  594.198331] cleanup_net (net/core/net_namespace.c:630) 
[  594.198811] ? process_one_work (kernel/workqueue.c:2606) 
[  594.199347] process_one_work (kernel/workqueue.c:2633) 
[  594.199790] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  594.200242] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  594.200752] kthread (kernel/kthread.c:388) 
[  594.201019] ? __pfx_kthread (kernel/kthread.c:341) 
[  594.201307] ret_from_fork (arch/x86/kernel/process.c:147) 
[  594.201616] ? __pfx_kthread (kernel/kthread.c:341) 
[  594.201983] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  631.700299] ------------[ cut here ]------------
| [  631.700735] sysfs group 'bridge' not found for kobject 'br0'
| [  631.701212] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  631.701806] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  631.703095] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  631.703881] Workqueue: netns cleanup_net
[  631.704213] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 631.704541] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  631.705547] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  631.705840] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff257
[  631.706251] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  631.706663] RBP: 0000000000000000 R08: ffffffff99d63d48 R09: 00000000fffff257
[  631.707075] R10: ffffffff99c98520 R11: ffffffff99d63d48 R12: ffff9bbec50ee610
[  631.707458] R13: ffffae1e40063e08 R14: ffff9bbec50eeb80 R15: ffff9bbec3962e50
[  631.707864] FS:  0000000000000000(0000) GS:ffff9bbefec00000(0000) knlGS:0000000000000000
[  631.708332] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  631.708667] CR2: 0000555b8c6d3d00 CR3: 00000000026cc005 CR4: 0000000000770ef0
[  631.709057] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  631.709454] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  631.709875] PKRU: 55555554
[  631.710057] Call Trace:
[  631.710213]  <TASK>
[  631.710383] ? __warn (kernel/panic.c:677) 
[  631.710597] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  631.710848] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  631.711069] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  631.711303] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  631.711551] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  631.711823] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  631.712065] br_dev_delete (net/bridge/br_if.c:396) 
[  631.712297] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  631.712571] cleanup_net (net/core/net_namespace.c:630) 
[  631.712795] ? process_one_work (kernel/workqueue.c:2606) 
[  631.713043] process_one_work (kernel/workqueue.c:2633) 
[  631.713304] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  631.713563] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  631.713836] kthread (kernel/kthread.c:388) 
[  631.714079] ? __pfx_kthread (kernel/kthread.c:341) 
[  631.714394] ret_from_fork (arch/x86/kernel/process.c:147) 
[  631.714643] ? __pfx_kthread (kernel/kthread.c:341) 
[  631.714965] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  631.835238] ------------[ cut here ]------------
| [  631.835512] sysfs group 'bridge' not found for kobject 'br0'
| [  631.835834] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  631.836549] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  631.837939] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  631.839055] Workqueue: netns cleanup_net
[  631.839409] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 631.839912] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  631.841897] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  631.842381] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff28e
[  631.843106] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  631.843731] RBP: 0000000000000000 R08: ffffffff99d64270 R09: 00000000fffff28e
[  631.844441] R10: ffffffff99c98520 R11: ffffffff99d64270 R12: ffff9bbec39b8610
[  631.845019] R13: ffffae1e40063e08 R14: ffff9bbec39b8b80 R15: ffff9bbec5010050
[  631.845596] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  631.846237] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  631.846719] CR2: 00007faa987b1000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  631.847376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  631.847939] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  631.848555] PKRU: 55555554
[  631.848796] Call Trace:
[  631.848968]  <TASK>
[  631.849131] ? __warn (kernel/panic.c:677) 
[  631.849408] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  631.849758] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  631.849971] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  631.850176] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  631.850391] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  631.850657] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  631.850940] br_dev_delete (net/bridge/br_if.c:396) 
[  631.851295] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  631.851560] cleanup_net (net/core/net_namespace.c:630) 
[  631.851789] ? process_one_work (kernel/workqueue.c:2606) 
[  631.852019] process_one_work (kernel/workqueue.c:2633) 
[  631.852277] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  631.852554] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  631.852858] kthread (kernel/kthread.c:388) 
[  631.853075] ? __pfx_kthread (kernel/kthread.c:341) 
[  631.853372] ret_from_fork (arch/x86/kernel/process.c:147) 
[  631.853666] ? __pfx_kthread (kernel/kthread.c:341) 
[  631.853955] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  631.858433] ------------[ cut here ]------------
| [  631.858817] sysfs group 'bridge' not found for kobject 'br0'
| [  631.859441] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  631.860186] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  631.861830] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  631.862841] Workqueue: netns cleanup_net
[  631.863161] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 631.863632] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  631.865073] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  631.865362] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff2bf
[  631.865776] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  631.866377] RBP: 0000000000000000 R08: ffffffff99d64708 R09: 00000000fffff2bf
[  631.866785] R10: ffffffff99c98520 R11: ffffffff99d64708 R12: ffff9bbec3832610
[  631.867158] R13: ffffae1e40063e08 R14: ffff9bbec3832b80 R15: ffff9bbec5010050
[  631.867813] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  631.868492] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  631.869038] CR2: 00007faa987b1000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  631.869616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  631.870086] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  631.870653] PKRU: 55555554
[  631.870880] Call Trace:
[  631.871098]  <TASK>
[  631.871292] ? __warn (kernel/panic.c:677) 
[  631.871633] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  631.871989] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  631.872284] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  631.872569] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  631.873024] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  631.873509] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  631.874010] br_dev_delete (net/bridge/br_if.c:396) 
[  631.874458] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  631.874996] cleanup_net (net/core/net_namespace.c:630) 
[  631.875430] ? process_one_work (kernel/workqueue.c:2606) 
[  631.875949] process_one_work (kernel/workqueue.c:2633) 
[  631.876425] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  631.876917] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  631.877404] kthread (kernel/kthread.c:388) 
[  631.877792] ? __pfx_kthread (kernel/kthread.c:341) 
[  631.878238] ret_from_fork (arch/x86/kernel/process.c:147) 
[  631.878649] ? __pfx_kthread (kernel/kthread.c:341) 
[  631.878894] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  632.009283] ------------[ cut here ]------------
| [  632.009757] sysfs group 'bridge' not found for kobject 'br0'
| [  632.010357] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  632.010990] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  632.012585] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  632.013507] Workqueue: netns cleanup_net
[  632.013854] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 632.014256] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  632.015859] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  632.016314] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff2f3
[  632.016926] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  632.017536] RBP: 0000000000000000 R08: ffffffff99d64be8 R09: 00000000fffff2f3
[  632.018142] R10: ffffffff99c98520 R11: ffffffff99d64be8 R12: ffff9bbec3b22610
[  632.018755] R13: ffffae1e40063e08 R14: ffff9bbec3b22b80 R15: ffff9bbec5015c50
[  632.019390] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  632.020043] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  632.020549] CR2: 00007faa987b1000 CR3: 000000003ce60002 CR4: 0000000000770ef0
[  632.021150] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  632.021726] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  632.022482] PKRU: 55555554
[  632.022830] Call Trace:
[  632.023110]  <TASK>
[  632.023379] ? __warn (kernel/panic.c:677) 
[  632.023696] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  632.024045] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  632.024383] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  632.024699] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  632.025005] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  632.025342] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  632.025668] br_dev_delete (net/bridge/br_if.c:396) 
[  632.025962] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  632.026305] cleanup_net (net/core/net_namespace.c:630) 
[  632.026594] ? process_one_work (kernel/workqueue.c:2606) 
[  632.026925] process_one_work (kernel/workqueue.c:2633) 
[  632.027249] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  632.027546] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  632.027878] kthread (kernel/kthread.c:388) 
[  632.028138] ? __pfx_kthread (kernel/kthread.c:341) 
[  632.028433] ret_from_fork (arch/x86/kernel/process.c:147) 
[  632.028638] ? __pfx_kthread (kernel/kthread.c:341) 
[  632.028837] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  669.557379] ------------[ cut here ]------------
| [  669.557771] sysfs group 'bridge' not found for kobject 'br0'
| [  669.558251] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  669.558950] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  669.560855] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  669.562119] Workqueue: netns cleanup_net
[  669.562497] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 669.562972] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  669.564739] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  669.565242] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff341
[  669.565949] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  669.566632] RBP: 0000000000000000 R08: ffffffff99d65338 R09: 00000000fffff341
[  669.567355] R10: ffffffff99c98520 R11: ffffffff99d65338 R12: ffff9bbec3836610
[  669.567924] R13: ffffae1e40063e08 R14: ffff9bbec3836b80 R15: ffff9bbec2bf1750
[  669.568558] FS:  0000000000000000(0000) GS:ffff9bbefec80000(0000) knlGS:0000000000000000
[  669.569252] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  669.569761] CR2: 0000555b8acc45a0 CR3: 000000003ce60006 CR4: 0000000000770ef0
[  669.570526] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  669.571213] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  669.571919] PKRU: 55555554
[  669.572188] Call Trace:
[  669.572470]  <TASK>
[  669.572653] ? __warn (kernel/panic.c:677) 
[  669.572830] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  669.573068] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  669.573326] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  669.573593] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  669.573873] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  669.574208] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  669.574481] br_dev_delete (net/bridge/br_if.c:396) 
[  669.574790] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  669.575164] cleanup_net (net/core/net_namespace.c:630) 
[  669.575379] ? process_one_work (kernel/workqueue.c:2606) 
[  669.575614] process_one_work (kernel/workqueue.c:2633) 
[  669.575846] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  669.576093] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  669.576443] kthread (kernel/kthread.c:388) 
[  669.576742] ? __pfx_kthread (kernel/kthread.c:341) 
[  669.577013] ret_from_fork (arch/x86/kernel/process.c:147) 
[  669.577222] ? __pfx_kthread (kernel/kthread.c:341) 
[  669.577540] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  669.688220] ------------[ cut here ]------------
| [  669.688757] sysfs group 'bridge' not found for kobject 'br0'
| [  669.689397] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  669.690046] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  669.691391] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  669.692306] Workqueue: netns cleanup_net
[  669.692624] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 669.692871] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  669.694394] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  669.694874] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff378
[  669.695521] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  669.696207] RBP: 0000000000000000 R08: ffffffff99d65860 R09: 00000000fffff378
[  669.696846] R10: ffffffff99c98520 R11: ffffffff99d65860 R12: ffff9bbec52a2610
[  669.697519] R13: ffffae1e40063e08 R14: ffff9bbec52a2b80 R15: ffff9bbec5015c50
[  669.698154] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  669.698911] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  669.699436] CR2: 00007ffc097f3768 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  669.700020] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  669.700665] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  669.701341] PKRU: 55555554
[  669.701591] Call Trace:
[  669.701804]  <TASK>
[  669.702000] ? __warn (kernel/panic.c:677) 
[  669.702255] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  669.702672] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  669.703013] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  669.703347] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  669.703554] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  669.703793] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  669.704029] br_dev_delete (net/bridge/br_if.c:396) 
[  669.704256] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  669.704620] cleanup_net (net/core/net_namespace.c:630) 
[  669.704839] ? process_one_work (kernel/workqueue.c:2606) 
[  669.705062] process_one_work (kernel/workqueue.c:2633) 
[  669.705291] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  669.705490] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  669.705712] kthread (kernel/kthread.c:388) 
# [  669.705882] ? __pfx_kthread (kernel/kthread.c:341) 
[  669.706141] ret_from_fork (arch/x86/kernel/process.c:147) 

[  669.706368] ? __pfx_kthread (kernel/kthread.c:341) 
[  669.706598] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| t[  669.709810] ------------[ cut here ]------------
| [  669.710098] sysfs group 'bridge' not found for kobject 'br0'
| s[ 669.710730] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
|  [  669.711168] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  669.712308] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
p[  669.713256] Workqueue: netns cleanup_net
[  669.713494] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
a[ 669.713885] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  669.714862] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
s[  669.715346] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff3a9
[  669.715763] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  669.716370] RBP: 0000000000000000 R08: ffffffff99d65cf8 R09: 00000000fffff3a9
s[  669.716988] R10: ffffffff99c98520 R11: ffffffff99d65cf8 R12: ffff9bbec1cc4610
[  669.717408] R13: ffffae1e40063e08 R14: ffff9bbec1cc4b80 R15: ffff9bbec5015c50
e[  669.718034] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  669.718512] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
d[  669.719013] CR2: 00007ffc097f3768 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  669.719414] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
:[  669.719983] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  669.720388] PKRU: 55555554
[  669.720610] Call Trace:
[  669.720819]  <TASK>
6[ 669.721028] ? __warn (kernel/panic.c:677) 
[  669.721239] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
4[ 669.721580] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  669.721808] ? handle_bug (arch/x86/kernel/traps.c:238) 
2[ 669.722092] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  669.722321] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 

[  669.722623] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
# [  669.723021] br_dev_delete (net/bridge/br_if.c:396) 
[  669.723250] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
T[ 669.723580] cleanup_net (net/core/net_namespace.c:630) 
e[ 669.723897] ? process_one_work (kernel/workqueue.c:2606) 
s[ 669.724248] process_one_work (kernel/workqueue.c:2633) 
[  669.724496] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
t[ 669.724797] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  669.725060] kthread (kernel/kthread.c:388) 
s[ 669.725307] ? __pfx_kthread (kernel/kthread.c:341) 
[  669.725667] ret_from_fork (arch/x86/kernel/process.c:147) 
f[ 669.726003] ? __pfx_kthread (kernel/kthread.c:341) 
a[ 669.726293] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [  669.856255] ------------[ cut here ]------------
| [  669.856691] sysfs group 'bridge' not found for kobject 'br0'
| [  669.857009] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
| [  669.857656] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel
[  669.858928] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  669.860009] Workqueue: netns cleanup_net
[  669.860410] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[ 669.860874] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 a0 cd 92 99 e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
All code
========
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	e9 7a ad ff ff       	jmp    0xffffffffffffad85
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	e8 12 9b ff ff       	call   0xffffffffffff9b25
  13:	eb d1                	jmp    0xffffffffffffffe6
  15:	90                   	nop
  16:	49 8b 14 24          	mov    (%r12),%rdx
  1a:	48 8b 33             	mov    (%rbx),%rsi
  1d:	48 c7 c7 a0 cd 92 99 	mov    $0xffffffff9992cda0,%rdi
  24:	e8 ac 67 c5 ff       	call   0xffffffffffc567d5
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	5b                   	pop    %rbx
  2f:	5d                   	pop    %rbp
  30:	41 5c                	pop    %r12
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	5b                   	pop    %rbx
   5:	5d                   	pop    %rbp
   6:	41 5c                	pop    %r12
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	66                   	data16
   e:	66                   	data16
   f:	2e                   	cs
  10:	0f                   	.byte 0xf
  11:	1f                   	(bad)
  12:	84 00                	test   %al,(%rax)
	...
[  669.862688] RSP: 0018:ffffae1e40063d70 EFLAGS: 00010286
[  669.863315] RAX: 0000000000000000 RBX: ffffffff995472c0 RCX: 00000000fffff3dd
[  669.864229] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  669.865181] RBP: 0000000000000000 R08: ffffffff99d661d8 R09: 00000000fffff3dd
[  669.866195] R10: ffffffff99c98520 R11: ffffffff99d661d8 R12: ffff9bbec1cc6610
[  669.866776] R13: ffffae1e40063e08 R14: ffff9bbec1cc6b80 R15: ffffffff9b278f90
[  669.867415] FS:  0000000000000000(0000) GS:ffff9bbefed00000(0000) knlGS:0000000000000000
[  669.868050] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  669.868494] CR2: 00007f808facf000 CR3: 000000003ce60004 CR4: 0000000000770ef0
[  669.869316] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  669.870014] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  669.871097] PKRU: 55555554
[  669.871555] Call Trace:
[  669.872017]  <TASK>
[  669.872379] ? __warn (kernel/panic.c:677) 
[  669.872994] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  669.873427] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[  669.873839] ? handle_bug (arch/x86/kernel/traps.c:238) 
[  669.874196] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[  669.874638] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[  669.875133] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) 
[  669.875581] br_dev_delete (net/bridge/br_if.c:396) 
[  669.875989] br_net_exit_batch_rtnl (net/bridge/br.c:369) 
[  669.876444] cleanup_net (net/core/net_namespace.c:630) 
[  669.876855] ? process_one_work (kernel/workqueue.c:2606) 
[  669.877305] process_one_work (kernel/workqueue.c:2633) 
[  669.877688] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  669.878097] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  669.878471] kthread (kernel/kthread.c:388) 
[  669.878831] ? __pfx_kthread (kernel/kthread.c:341) 
[  669.879192] ret_from_fork (arch/x86/kernel/process.c:147) 
[  669.879577] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
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
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
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
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
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
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
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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
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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
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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