====================================== | [ 44.400921][ T11] ================================================================== | [ 44.401375][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 44.401777][ T11] Read of size 1 at addr ffff88800962857c by task kworker/u8:0/11 | [ 44.402199][ T11] [ 44.402835][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.403496][ T11] Workqueue: netns cleanup_net [ 44.403833][ T11] Call Trace: [ 44.404018][ T11] [ 44.404214][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 44.404489][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 44.404851][ T11] ? kobject_put (lib/kobject.c:729) [ 44.405094][ T11] print_report (mm/kasan/report.c:489) [ 44.405342][ T11] ? kasan_addr_to_slab (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/page-flags.h:481 mm/kasan/../slab.h:206 mm/kasan/common.c:38) [ 44.405618][ T11] kasan_report (mm/kasan/report.c:603) [ 44.405857][ T11] ? kobject_put (lib/kobject.c:729) [ 44.406104][ T11] kobject_put (lib/kobject.c:729) [ 44.406338][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 44.406586][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 44.406843][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 44.407137][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 44.407382][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.407695][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 44.407967][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.408283][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 44.408627][ T11] process_one_work (kernel/workqueue.c:2638) [ 44.408917][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 44.409200][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 44.409515][ T11] ? assign_work (kernel/workqueue.c:1101) [ 44.409816][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 44.410074][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 44.410354][ T11] kthread (kernel/kthread.c:388) [ 44.410640][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.410927][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 44.411207][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.411468][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 44.432735][ T11] ------------[ cut here ]------------ | [ 44.433075][ T11] refcount_t: underflow; use-after-free. | [ 44.433439][ T11] WARNING: CPU: 1 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 44.434031][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 44.435264][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.436030][ T11] Workqueue: netns cleanup_net [ 44.436329][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.436665][ T11] Code: f9 82 03 80 fb 01 0f 87 ee 02 b1 01 83 e3 01 0f 85 4d ff ff ff c6 05 9a f9 82 03 01 90 48 c7 c7 20 7a 02 a1 e8 3e 05 2a ff 90 <0f> 0b 90 90 e9 2f ff ff ff 48 89 df e8 8c 68 a6 ff e9 b6 fe ff ff All code ======== 0: f9 stc 1: 82 (bad) 2: 03 80 fb 01 0f 87 add -0x78f0fe05(%rax),%eax 8: ee out %al,(%dx) 9: 02 b1 01 83 e3 01 add 0x1e38301(%rcx),%dh f: 0f 85 4d ff ff ff jne 0xffffffffffffff62 15: c6 05 9a f9 82 03 01 movb $0x1,0x382f99a(%rip) # 0x382f9b6 1c: 90 nop 1d: 48 c7 c7 20 7a 02 a1 mov $0xffffffffa1027a20,%rdi 24: e8 3e 05 2a ff call 0xffffffffff2a0567 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: e9 2f ff ff ff jmp 0xffffffffffffff62 33: 48 89 df mov %rbx,%rdi 36: e8 8c 68 a6 ff call 0xffffffffffa668c7 3b: e9 b6 fe ff ff jmp 0xfffffffffffffef6 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: e9 2f ff ff ff jmp 0xffffffffffffff38 9: 48 89 df mov %rbx,%rdi c: e8 8c 68 a6 ff call 0xffffffffffa6689d 11: e9 b6 fe ff ff jmp 0xfffffffffffffecc [ 44.437713][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 44.438048][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff9e31056f [ 44.438474][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 44.438927][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 44.439404][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff88800961a000 [ 44.439892][ T11] R13: ffff88800961adf8 R14: ffffc900000bfc98 R15: ffff88800961abc0 [ 44.440377][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 44.440874][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.441230][ T11] CR2: 00007f706de62000 CR3: 0000000028534003 CR4: 00000000001706f0 [ 44.441669][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.442110][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.442538][ T11] Call Trace: [ 44.442757][ T11] [ 44.442925][ T11] ? __warn (kernel/panic.c:677) [ 44.443187][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.443523][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 44.443781][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 44.444036][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 44.444277][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 44.444536][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 44.444821][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 44.445067][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.445374][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.445680][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 44.445936][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 44.446228][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 44.446589][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 44.446888][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.447227][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 44.447534][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.447824][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 44.448140][ T11] process_one_work (kernel/workqueue.c:2638) [ 44.448469][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 44.448751][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 44.449076][ T11] ? assign_work (kernel/workqueue.c:1101) [ 44.449377][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 44.449696][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 44.450023][ T11] kthread (kernel/kthread.c:388) [ 44.450281][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.450531][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 44.450872][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.451128][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 44.454397][ T11] ------------[ cut here ]------------ | [ 44.454697][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 44.455108][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 44.455644][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 44.456806][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.457545][ T11] Workqueue: netns cleanup_net [ 44.457924][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.458272][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 44.459452][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 44.459791][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 44.460215][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 44.460646][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 44.461093][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800961a628 [ 44.461515][ T11] R13: ffff88800961adf8 R14: ffffc900000bfc98 R15: ffff88800961abc0 [ 44.461953][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 44.462475][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.462950][ T11] CR2: 00007f706de62000 CR3: 0000000028534003 CR4: 00000000001706f0 [ 44.463429][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.463921][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.464403][ T11] Call Trace: [ 44.464595][ T11] [ 44.464877][ T11] ? __warn (kernel/panic.c:677) [ 44.465159][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 44.465462][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.465779][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 44.466083][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 44.466341][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 44.466617][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 44.466927][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 44.467211][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.467533][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 44.467888][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 44.468244][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 44.468541][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.468883][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 44.469194][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.469471][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 44.469868][ T11] process_one_work (kernel/workqueue.c:2638) [ 44.470198][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 44.470477][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 44.470831][ T11] ? assign_work (kernel/workqueue.c:1101) [ 44.471125][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 44.471417][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 44.471723][ T11] kthread (kernel/kthread.c:388) [ 44.472034][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.472302][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 44.472609][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.472919][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 44.609115][ T11] ------------[ cut here ]------------ | [ 44.609429][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 44.609819][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 44.610356][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 44.611766][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.612485][ T11] Workqueue: netns cleanup_net [ 44.612769][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.613122][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 44.614274][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 44.614618][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 44.615078][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 44.615540][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 44.616018][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800953a628 [ 44.616488][ T11] R13: ffff88800953adf8 R14: ffffc900000bfc98 R15: ffff88800953abc0 [ 44.616940][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 44.617471][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.617835][ T11] CR2: 00007f2301648000 CR3: 0000000028534002 CR4: 00000000001706f0 [ 44.618259][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.618688][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.619119][ T11] Call Trace: [ 44.619299][ T11] [ 44.619461][ T11] ? __warn (kernel/panic.c:677) [ 44.619684][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 44.619958][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.620254][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 44.620536][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 44.620832][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 44.621096][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 44.621420][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 44.621678][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.621983][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 44.622280][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 44.622586][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 44.622858][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.623152][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 44.623439][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.623719][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 44.624039][ T11] process_one_work (kernel/workqueue.c:2638) [ 44.624319][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 44.624613][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 44.624928][ T11] ? assign_work (kernel/workqueue.c:1101) [ 44.625193][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 44.625476][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 44.625771][ T11] kthread (kernel/kthread.c:388) [ 44.626008][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.626298][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 44.626564][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.626839][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 134.883802][ T11] ------------[ cut here ]------------ | [ 134.884153][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 134.884587][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 134.885180][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 134.886320][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 134.887050][ T11] Workqueue: netns cleanup_net [ 134.887312][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 134.887628][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 134.888665][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 134.889002][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 134.889464][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 134.889963][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 134.890404][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009ec2628 [ 134.890910][ T11] R13: ffff888009ec2df8 R14: ffffc900000bfc98 R15: ffff888009ec2bc0 [ 134.891383][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 134.891932][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 134.892333][ T11] CR2: 000055c8554fbe00 CR3: 0000000003e12006 CR4: 00000000001706f0 [ 134.892834][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 134.893300][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 134.893806][ T11] Call Trace: [ 134.893998][ T11] [ 134.894184][ T11] ? __warn (kernel/panic.c:677) [ 134.894429][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 134.894733][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 134.895038][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 134.895330][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 134.895609][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 134.895902][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 134.896219][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 134.896508][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 134.896826][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 134.897108][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 134.897454][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 134.897739][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 134.898028][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 134.898326][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 134.898614][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 134.898922][ T11] process_one_work (kernel/workqueue.c:2638) [ 134.899240][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 134.899566][ T11] ? assign_work (kernel/workqueue.c:1101) [ 134.899842][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 134.900101][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 134.900384][ T11] kthread (kernel/kthread.c:388) [ 134.900604][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 134.900860][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 134.901100][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 134.901349][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 135.084769][ T11] ------------[ cut here ]------------ | [ 135.085088][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 135.085480][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 135.086000][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 135.087086][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 135.087874][ T11] Workqueue: netns cleanup_net [ 135.088167][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 135.088561][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 135.089717][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 135.090098][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 135.090536][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 135.090977][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 135.091412][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009cca628 [ 135.091926][ T11] R13: ffff888009ccadf8 R14: ffffc900000bfc98 R15: ffff888009ccabc0 [ 135.092432][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 135.092955][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 135.093375][ T11] CR2: 000055c8550f0990 CR3: 0000000028534004 CR4: 00000000001706f0 [ 135.093889][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 135.094406][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 135.094906][ T11] Call Trace: [ 135.095123][ T11] [ 135.095309][ T11] ? __warn (kernel/panic.c:677) [ 135.095567][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 135.095895][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 135.096219][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 135.096495][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 135.096778][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 135.097086][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 135.097384][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 135.097673][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 135.098018][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 135.098290][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 135.098659][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 135.098935][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 135.099213][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 135.099566][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 135.099857][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 135.100189][ T11] process_one_work (kernel/workqueue.c:2638) [ 135.100518][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 135.100868][ T11] ? assign_work (kernel/workqueue.c:1101) [ 135.101159][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 135.101489][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 135.101823][ T11] kthread (kernel/kthread.c:388) [ 135.102086][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 135.102344][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 135.102594][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 135.102859][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 166.948492][ T11] ------------[ cut here ]------------ | [ 166.948801][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 166.949201][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 166.949784][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 166.950953][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 166.951617][ T11] Workqueue: netns cleanup_net [ 166.951909][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 166.952223][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 166.953247][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 166.953566][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 166.953991][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 166.954494][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 166.954974][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a3aa628 [ 166.955440][ T11] R13: ffff88800a3aadf8 R14: ffffc900000bfc98 R15: ffff88800a3aabc0 [ 166.955921][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 166.956466][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 166.956883][ T11] CR2: 000055c8554fe8b0 CR3: 0000000003e12005 CR4: 00000000001706f0 [ 166.957369][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 166.957880][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 166.958352][ T11] Call Trace: [ 166.958572][ T11] [ 166.958749][ T11] ? __warn (kernel/panic.c:677) [ 166.959005][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 166.959307][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 166.959618][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 166.959932][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 166.960184][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 166.960467][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 166.960831][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 166.961084][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 166.961431][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 166.961727][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 166.962032][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 166.962344][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 166.962592][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 166.962861][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 166.963111][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 166.963387][ T11] process_one_work (kernel/workqueue.c:2638) [ 166.963656][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 166.963952][ T11] ? assign_work (kernel/workqueue.c:1101) [ 166.964200][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 166.964451][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 166.964721][ T11] kthread (kernel/kthread.c:388) [ 166.964985][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 166.965250][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 166.965530][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 166.965835][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 167.147815][ T11] ------------[ cut here ]------------ | [ 167.148167][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 167.148578][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 167.149134][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 167.150284][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 167.150982][ T11] Workqueue: netns cleanup_net [ 167.151244][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.151589][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 167.152617][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 167.152949][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 167.153367][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 167.153822][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 167.154295][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009eaa628 [ 167.154755][ T11] R13: ffff888009eaadf8 R14: ffffc900000bfc98 R15: ffff888009eaabc0 [ 167.155227][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 167.155735][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 167.156133][ T11] CR2: 000055c8554fc6e0 CR3: 0000000003e12004 CR4: 00000000001706f0 [ 167.156595][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 167.157071][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 167.157527][ T11] Call Trace: [ 167.157750][ T11] [ 167.157920][ T11] ? __warn (kernel/panic.c:677) [ 167.158166][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 167.158447][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.158769][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 167.159044][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 167.159318][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 167.159599][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 167.159906][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 167.160164][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.160498][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 167.160780][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 167.161096][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 167.161364][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 167.161650][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 167.161957][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 167.162241][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 167.162551][ T11] process_one_work (kernel/workqueue.c:2638) [ 167.162842][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 167.163155][ T11] ? assign_work (kernel/workqueue.c:1101) [ 167.163427][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 167.163694][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 167.164033][ T11] kthread (kernel/kthread.c:388) [ 167.164249][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 167.164497][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 167.164735][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 167.164986][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 246.519784][ T11] ------------[ cut here ]------------ | [ 246.520230][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 246.520643][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 246.521196][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 246.522335][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 246.523080][ T11] Workqueue: netns cleanup_net [ 246.523340][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 246.523650][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 246.524678][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 246.525012][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 246.525480][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 246.525989][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 246.526461][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009fa2628 [ 246.526981][ T11] R13: ffff888009fa2df8 R14: ffffc900000bfc98 R15: ffff888009fa2bc0 [ 246.527452][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 246.528011][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 246.528392][ T11] CR2: 000055c8554fbdf0 CR3: 0000000028534002 CR4: 00000000001706f0 [ 246.528896][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 246.529374][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 246.529880][ T11] Call Trace: [ 246.530085][ T11] [ 246.530285][ T11] ? __warn (kernel/panic.c:677) [ 246.530522][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 246.530819][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 246.531145][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 246.531430][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 246.531693][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 246.531989][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 246.532297][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 246.532586][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 246.532905][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 246.533184][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 246.533492][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 246.533767][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 246.534048][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 246.534330][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 246.534629][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 246.534926][ T11] process_one_work (kernel/workqueue.c:2638) [ 246.535192][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 246.535475][ T11] ? assign_work (kernel/workqueue.c:1101) [ 246.535718][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 246.535980][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 246.536253][ T11] kthread (kernel/kthread.c:388) [ 246.536475][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 246.536722][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 246.536989][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 246.537266][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 246.711763][ T11] ------------[ cut here ]------------ | [ 246.712108][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 246.712519][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 246.713035][ T11] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 246.714055][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 246.714704][ T11] Workqueue: netns cleanup_net [ 246.715007][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 246.715381][ T11] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 fc a0 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 fc a0 mov $0xffffffffa0fca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 246.716515][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 246.716847][ T11] RAX: 0000000000000000 RBX: ffffffffa13be220 RCX: ffffffff9e31056f [ 246.717299][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 246.717769][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 246.718222][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008962628 [ 246.718694][ T11] R13: ffff888008962df8 R14: ffffc900000bfc98 R15: ffff888008962bc0 [ 246.719149][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 246.719684][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 246.720048][ T11] CR2: 00007f98cc4d0000 CR3: 0000000028534004 CR4: 00000000001706f0 [ 246.720470][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 246.720893][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 246.721311][ T11] Call Trace: [ 246.721487][ T11] [ 246.721645][ T11] ? __warn (kernel/panic.c:677) [ 246.721882][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 246.722166][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 246.722477][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 246.722757][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 246.722998][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 246.723292][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 246.723600][ T11] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 246.723851][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 246.724176][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 246.724440][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 246.724758][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 246.725022][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 246.725316][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 246.725594][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 246.725891][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 246.726206][ T11] process_one_work (kernel/workqueue.c:2638) [ 246.726496][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 246.726820][ T11] ? assign_work (kernel/workqueue.c:1101) [ 246.727102][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 246.727378][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 246.727665][ T11] kthread (kernel/kthread.c:388) [ 246.727913][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 246.728195][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 246.728461][ T11] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: dump_stack_lvl:print_report:kasan_report:kobject_put refcount_warn_saturate:br_sysfs_delbr:br_dev_delete:br_net_exit_batch_rtnl sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net