====================================== | [ 52.688403] ------------[ cut here ]------------ | [ 52.688810] refcount_t: underflow; use-after-free. | [ 52.689249] WARNING: CPU: 0 PID: 69 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 52.689921] Modules linked in: [ 52.690774] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 52.691659] Workqueue: netns cleanup_net [ 52.692006] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 52.692436] 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 e8 37 b3 9b 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 e8 37 b3 9b mov $0xffffffff9bb337e8,%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 [ 52.693655] RSP: 0018:ffffae394026bd78 EFLAGS: 00010286 [ 52.693976] RAX: 0000000000000000 RBX: ffff8bc781bb8000 RCX: 00000000ffffdfff [ 52.694363] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 52.694769] RBP: ffff8bc781bb8610 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 52.695174] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc781bb8000 [ 52.695576] R13: ffffae394026be08 R14: ffff8bc781bb8b80 R15: ffff8bc783a45c50 [ 52.695988] FS: 0000000000000000(0000) GS:ffff8bc7bec00000(0000) knlGS:0000000000000000 [ 52.696420] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.696742] CR2: 00005640bd652dec CR3: 0000000002a1c002 CR4: 0000000000770ef0 [ 52.697146] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.697566] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.697968] PKRU: 55555554 [ 52.698136] Call Trace: [ 52.698310] [ 52.698431] ? __warn (kernel/panic.c:677) [ 52.698606] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 52.698880] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 52.699097] ? handle_bug (arch/x86/kernel/traps.c:238) [ 52.699316] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 52.699525] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 52.699753] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 52.700019] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 52.700265] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 52.700463] br_dev_delete (net/bridge/br_if.c:396) [ 52.700658] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 52.700905] cleanup_net (net/core/net_namespace.c:630) [ 52.701104] ? process_one_work (kernel/workqueue.c:2606) [ 52.701326] process_one_work (kernel/workqueue.c:2633) [ 52.701540] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 52.701742] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 52.701975] kthread (kernel/kthread.c:388) [ 52.702151] ? __pfx_kthread (kernel/kthread.c:341) [ 52.702351] ret_from_fork (arch/x86/kernel/process.c:147) [ 52.702546] ? __pfx_kthread (kernel/kthread.c:341) [ 52.702745] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 52.705356] ------------[ cut here ]------------ | [ 52.705736] sysfs group 'bridge' not found for kobject 'br0' | [ 52.706195] WARNING: CPU: 0 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 52.706776] Modules linked in: [ 52.707725] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 52.708601] Workqueue: netns cleanup_net [ 52.708948] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 52.709357] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 52.710764] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 52.711200] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 52.711740] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 52.712289] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 52.712777] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc781bb8610 [ 52.713152] R13: ffffae394026be08 R14: ffff8bc781bb8b80 R15: ffff8bc783a45c50 [ 52.713584] FS: 0000000000000000(0000) GS:ffff8bc7bec00000(0000) knlGS:0000000000000000 [ 52.714224] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.714685] CR2: 00005640bd652dec CR3: 000000002aa60001 CR4: 0000000000770ef0 [ 52.715264] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.715735] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.716291] PKRU: 55555554 [ 52.716534] Call Trace: [ 52.716767] [ 52.716974] ? __warn (kernel/panic.c:677) [ 52.717248] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 52.717617] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 52.717948] ? handle_bug (arch/x86/kernel/traps.c:238) [ 52.718259] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 52.718591] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 52.718951] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 52.719316] br_dev_delete (net/bridge/br_if.c:396) [ 52.719639] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 52.720016] cleanup_net (net/core/net_namespace.c:630) [ 52.720325] ? process_one_work (kernel/workqueue.c:2606) [ 52.720685] process_one_work (kernel/workqueue.c:2633) [ 52.721053] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 52.721389] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 52.721750] kthread (kernel/kthread.c:388) [ 52.722030] ? __pfx_kthread (kernel/kthread.c:341) [ 52.722357] ret_from_fork (arch/x86/kernel/process.c:147) [ 52.722680] ? __pfx_kthread (kernel/kthread.c:341) [ 52.723014] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 52.822171] ------------[ cut here ]------------ | [ 52.822585] sysfs group 'bridge' not found for kobject 'br0' | [ 52.823075] WARNING: CPU: 0 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 52.823560] Modules linked in: [ 52.824323] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 52.825186] Workqueue: netns cleanup_net [ 52.825513] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 52.825933] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 52.827229] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 52.827654] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 52.828214] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 52.828775] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 52.829354] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc781bba610 [ 52.829942] R13: ffffae394026be08 R14: ffff8bc781bbab80 R15: ffff8bc783a45c50 [ 52.830512] FS: 0000000000000000(0000) GS:ffff8bc7bec00000(0000) knlGS:0000000000000000 [ 52.831168] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.831637] CR2: 00005640bd652dec CR3: 000000002aa60001 CR4: 0000000000770ef0 [ 52.832212] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.832768] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.833356] PKRU: 55555554 [ 52.833597] Call Trace: [ 52.833835] [ 52.834037] ? __warn (kernel/panic.c:677) [ 52.834315] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 52.834630] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 52.834861] ? handle_bug (arch/x86/kernel/traps.c:238) [ 52.835100] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 52.835322] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 52.835571] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 52.835820] br_dev_delete (net/bridge/br_if.c:396) [ 52.836056] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 52.836338] cleanup_net (net/core/net_namespace.c:630) [ 52.836551] ? process_one_work (kernel/workqueue.c:2606) [ 52.836792] process_one_work (kernel/workqueue.c:2633) [ 52.837055] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 52.837256] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 52.837484] kthread (kernel/kthread.c:388) [ 52.837687] ? __pfx_kthread (kernel/kthread.c:341) [ 52.837901] ret_from_fork (arch/x86/kernel/process.c:147) [ 52.838119] ? __pfx_kthread (kernel/kthread.c:341) [ 52.838344] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 56.312107] ------------[ cut here ]------------ | [ 56.312592] sysfs group 'bridge' not found for kobject 'br0' | [ 56.313197] WARNING: CPU: 3 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 56.314055] Modules linked in: [ 56.315781] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 56.317567] Workqueue: netns cleanup_net [ 56.318136] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 56.318851] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 56.320436] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 56.320838] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 56.321385] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 56.321935] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 56.322472] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc783b16610 [ 56.323025] R13: ffffae394026be08 R14: ffff8bc783b16b80 R15: ffff8bc783a41750 [ 56.323566] FS: 0000000000000000(0000) GS:ffff8bc7bed80000(0000) knlGS:0000000000000000 [ 56.324152] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.324585] CR2: 00007fb2c9c90270 CR3: 000000002aa60001 CR4: 0000000000770ef0 [ 56.324983] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.325352] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.325719] PKRU: 55555554 [ 56.325870] Call Trace: [ 56.326011] [ 56.326132] ? __warn (kernel/panic.c:677) [ 56.326310] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 56.326533] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 56.326731] ? handle_bug (arch/x86/kernel/traps.c:238) [ 56.326936] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 56.327141] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 56.327370] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 56.327592] br_dev_delete (net/bridge/br_if.c:396) [ 56.327787] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 56.328034] cleanup_net (net/core/net_namespace.c:630) [ 56.328231] ? process_one_work (kernel/workqueue.c:2606) [ 56.328454] process_one_work (kernel/workqueue.c:2633) [ 56.328669] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 56.328872] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 56.329137] kthread (kernel/kthread.c:388) [ 56.329309] ? __pfx_kthread (kernel/kthread.c:341) [ 56.329508] ret_from_fork (arch/x86/kernel/process.c:147) [ 56.329703] ? __pfx_kthread (kernel/kthread.c:341) [ 56.329915] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 56.428107] ------------[ cut here ]------------ | [ 56.428764] sysfs group 'bridge' not found for kobject 'br0' | [ 56.429603] WARNING: CPU: 2 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 56.430669] Modules linked in: [ 56.432092] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 56.433125] Workqueue: netns cleanup_net [ 56.433531] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 56.433923] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 56.435686] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 56.436376] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 56.437404] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 56.438356] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 56.439041] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc783b10610 [ 56.439693] R13: ffffae394026be08 R14: ffff8bc783b10b80 R15: ffff8bc783a41750 [ 56.440516] FS: 0000000000000000(0000) GS:ffff8bc7bed00000(0000) knlGS:0000000000000000 [ 56.441443] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.442016] CR2: 00007f5129aba000 CR3: 000000002aa60003 CR4: 0000000000770ef0 [ 56.442771] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.443522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.444253] PKRU: 55555554 [ 56.444540] Call Trace: [ 56.444814] [ 56.445054] ? __warn (kernel/panic.c:677) [ 56.445397] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 56.445876] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 56.446244] ? handle_bug (arch/x86/kernel/traps.c:238) [ 56.446605] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 56.446976] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 56.447386] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 56.447791] br_dev_delete (net/bridge/br_if.c:396) [ 56.448170] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 56.448557] cleanup_net (net/core/net_namespace.c:630) [ 56.448962] ? process_one_work (kernel/workqueue.c:2606) [ 56.449363] process_one_work (kernel/workqueue.c:2633) [ 56.449782] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 56.450068] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 56.450310] kthread (kernel/kthread.c:388) [ 56.450534] ? __pfx_kthread (kernel/kthread.c:341) [ 56.450745] ret_from_fork (arch/x86/kernel/process.c:147) [ 56.451055] ? __pfx_kthread (kernel/kthread.c:341) [ 56.451354] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 66.510163] ------------[ cut here ]------------ | [ 66.510879] sysfs group 'bridge' not found for kobject 'br0' | [ 66.511662] WARNING: CPU: 1 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 66.512673] Modules linked in: [ 66.513820] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 66.514749] Workqueue: netns cleanup_net [ 66.515081] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.515466] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 66.516900] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 66.517323] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 66.517892] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 66.518433] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 66.518999] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc7829a2610 [ 66.519532] R13: ffffae394026be08 R14: ffff8bc7829a2b80 R15: ffff8bc783a70050 [ 66.520090] FS: 0000000000000000(0000) GS:ffff8bc7bec80000(0000) knlGS:0000000000000000 [ 66.520709] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.521176] CR2: 00007fb17bb83000 CR3: 000000002aa60001 CR4: 0000000000770ef0 [ 66.521738] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.522299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.522851] PKRU: 55555554 [ 66.523079] Call Trace: [ 66.523282] [ 66.523462] ? __warn (kernel/panic.c:677) [ 66.523729] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.524078] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 66.524380] ? handle_bug (arch/x86/kernel/traps.c:238) [ 66.524663] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 66.524983] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 66.525328] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.525668] br_dev_delete (net/bridge/br_if.c:396) [ 66.525977] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 66.526336] cleanup_net (net/core/net_namespace.c:630) [ 66.526634] ? process_one_work (kernel/workqueue.c:2606) [ 66.526983] process_one_work (kernel/workqueue.c:2633) [ 66.527313] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 66.527620] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 66.527976] kthread (kernel/kthread.c:388) [ 66.528235] ? __pfx_kthread (kernel/kthread.c:341) [ 66.528539] ret_from_fork (arch/x86/kernel/process.c:147) [ 66.528834] ? __pfx_kthread (kernel/kthread.c:341) [ 66.529152] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 66.642054] ------------[ cut here ]------------ | [ 66.642544] sysfs group 'bridge' not found for kobject 'br0' | [ 66.643156] WARNING: CPU: 1 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 66.644023] Modules linked in: [ 66.645161] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 66.646262] Workqueue: netns cleanup_net [ 66.646659] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.647206] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 66.649045] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 66.649495] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 66.650216] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 66.650924] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 66.651596] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc782418610 [ 66.652342] R13: ffffae394026be08 R14: ffff8bc782418b80 R15: ffff8bc783a70050 [ 66.652998] FS: 0000000000000000(0000) GS:ffff8bc7bec80000(0000) knlGS:0000000000000000 [ 66.653769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.654078] CR2: 00007fb17bb83000 CR3: 000000002aa60001 CR4: 0000000000770ef0 [ 66.654524] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.655065] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.655506] PKRU: 55555554 [ 66.655653] Call Trace: [ 66.655788] [ 66.655914] ? __warn (kernel/panic.c:677) [ 66.656135] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.656531] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 66.656907] ? handle_bug (arch/x86/kernel/traps.c:238) [ 66.657315] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 66.657623] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 66.658059] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.658475] br_dev_delete (net/bridge/br_if.c:396) [ 66.658779] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 66.659030] cleanup_net (net/core/net_namespace.c:630) [ 66.659407] ? process_one_work (kernel/workqueue.c:2606) [ 66.659879] process_one_work (kernel/workqueue.c:2633) [ 66.660338] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 66.660759] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 66.661194] kthread (kernel/kthread.c:388) [ 66.661587] ? __pfx_kthread (kernel/kthread.c:341) [ 66.662039] ret_from_fork (arch/x86/kernel/process.c:147) [ 66.662408] ? __pfx_kthread (kernel/kthread.c:341) [ 66.662826] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 70.120174] ------------[ cut here ]------------ | [ 70.120463] sysfs group 'bridge' not found for kobject 'br0' | [ 70.120812] WARNING: CPU: 0 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 70.121276] Modules linked in: [ 70.122249] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 70.123122] Workqueue: netns cleanup_net [ 70.123473] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.123795] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 70.125120] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 70.125585] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 70.126156] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 70.126721] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 70.127292] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc784f70610 [ 70.127847] R13: ffffae394026be08 R14: ffff8bc784f70b80 R15: ffff8bc781ecc550 [ 70.128438] FS: 0000000000000000(0000) GS:ffff8bc7bec00000(0000) knlGS:0000000000000000 [ 70.129095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.129575] CR2: 00007f327f8e60e0 CR3: 00000000027b0005 CR4: 0000000000770ef0 [ 70.130161] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.130734] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.131297] PKRU: 55555554 [ 70.131553] Call Trace: [ 70.131788] [ 70.132034] ? __warn (kernel/panic.c:677) [ 70.132318] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.132671] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 70.132933] ? handle_bug (arch/x86/kernel/traps.c:238) [ 70.133163] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 70.133416] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 70.133674] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.133943] br_dev_delete (net/bridge/br_if.c:396) [ 70.134172] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 70.134543] cleanup_net (net/core/net_namespace.c:630) [ 70.134899] ? process_one_work (kernel/workqueue.c:2606) [ 70.135265] process_one_work (kernel/workqueue.c:2633) [ 70.135589] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 70.135952] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 70.136290] kthread (kernel/kthread.c:388) [ 70.136506] ? __pfx_kthread (kernel/kthread.c:341) [ 70.136714] ret_from_fork (arch/x86/kernel/process.c:147) [ 70.137017] ? __pfx_kthread (kernel/kthread.c:341) [ 70.137299] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 70.215045] ------------[ cut here ]------------ | [ 70.215324] sysfs group 'bridge' not found for kobject 'br0' | [ 70.215664] WARNING: CPU: 0 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 70.216106] Modules linked in: [ 70.216767] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 70.217401] Workqueue: netns cleanup_net [ 70.217630] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.217909] 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 d0 cd b2 9b 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 d0 cd b2 9b mov $0xffffffff9bb2cdd0,%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) ... [ 70.218889] RSP: 0018:ffffae394026bd70 EFLAGS: 00010286 [ 70.219197] RAX: 0000000000000000 RBX: ffffffff9b7472c0 RCX: 00000000ffffdfff [ 70.219597] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 70.219988] RBP: 0000000000000000 R08: ffffffff9bf78508 R09: 00000000ffffdfff [ 70.220366] R10: ffffffff9be98520 R11: ffffffff9bf48520 R12: ffff8bc784f72610 [ 70.220761] R13: ffffae394026be08 R14: ffff8bc784f72b80 R15: ffff8bc781ecc550 [ 70.221181] FS: 0000000000000000(0000) GS:ffff8bc7bec00000(0000) knlGS:0000000000000000 [ 70.221615] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.221940] CR2: 00007f327f8e60e0 CR3: 00000000027b0005 CR4: 0000000000770ef0 [ 70.222326] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.222715] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.223125] PKRU: 55555554 [ 70.223286] Call Trace: [ 70.223446] [ 70.223591] ? __warn (kernel/panic.c:677) [ 70.223787] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.224024] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 70.224248] ? handle_bug (arch/x86/kernel/traps.c:238) [ 70.224459] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 70.224706] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 70.224955] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.225196] br_dev_delete (net/bridge/br_if.c:396) [ 70.225419] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 70.225677] cleanup_net (net/core/net_namespace.c:630) [ 70.225905] ? process_one_work (kernel/workqueue.c:2606) [ 70.226150] process_one_work (kernel/workqueue.c:2633) [ 70.226377] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 70.226595] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 70.226848] kthread (kernel/kthread.c:388) [ 70.227075] ? __pfx_kthread (kernel/kthread.c:341) [ 70.227296] ret_from_fork (arch/x86/kernel/process.c:147) [ 70.227508] ? __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