====================================== | [ 100.579138] ------------[ cut here ]------------ | [ 100.579445] refcount_t: underflow; use-after-free. | [ 100.579760] WARNING: CPU: 1 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 100.580468] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 100.582494] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 100.583501] Workqueue: netns cleanup_net [ 100.583741] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 100.584031] 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 b3 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 b3 mov $0xffffffffb39337b8,%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 [ 100.585270] RSP: 0018:ffffb9c8c0063d78 EFLAGS: 00010286 [ 100.585746] RAX: 0000000000000000 RBX: ffffa0d605740000 RCX: 00000000ffffdfff [ 100.586177] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 100.586751] RBP: ffffa0d605740610 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 100.587415] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d605740000 [ 100.588065] R13: ffffb9c8c0063e08 R14: ffffa0d605740b80 R15: ffffa0d60347c550 [ 100.588698] FS: 0000000000000000(0000) GS:ffffa0d63ec80000(0000) knlGS:0000000000000000 [ 100.589403] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.589926] CR2: 00007f0d2bd7b270 CR3: 000000002cc60001 CR4: 0000000000770ef0 [ 100.590623] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.591336] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.591960] PKRU: 55555554 [ 100.592269] Call Trace: [ 100.592511] <TASK> [ 100.592686] ? __warn (kernel/panic.c:677) [ 100.593015] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 100.593414] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 100.593772] ? handle_bug (arch/x86/kernel/traps.c:238) [ 100.594079] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 100.594391] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 100.594796] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 100.595164] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 100.595533] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 100.595873] br_dev_delete (net/bridge/br_if.c:396) [ 100.596123] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 100.596354] cleanup_net (net/core/net_namespace.c:630) [ 100.596569] ? process_one_work (kernel/workqueue.c:2606) [ 100.596838] process_one_work (kernel/workqueue.c:2633) [ 100.597094] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 100.597382] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 100.597661] kthread (kernel/kthread.c:388) [ 100.597837] ? __pfx_kthread (kernel/kthread.c:341) [ 100.598034] ret_from_fork (arch/x86/kernel/process.c:147) [ 100.598224] ? __pfx_kthread (kernel/kthread.c:341) [ 100.598495] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 100.602828] ------------[ cut here ]------------ | [ 100.603110] sysfs group 'bridge' not found for kobject 'br0' | [ 100.603423] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 100.604077] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 100.606327] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 100.607301] Workqueue: netns cleanup_net [ 100.607629] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 100.608068] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 100.609616] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 100.610049] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 100.610476] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 100.610860] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 100.611254] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d605740610 [ 100.611768] R13: ffffb9c8c0063e08 R14: ffffa0d605740b80 R15: ffffa0d60347c550 [ 100.612133] FS: 0000000000000000(0000) GS:ffffa0d63ed00000(0000) knlGS:0000000000000000 [ 100.612541] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.612961] CR2: 00007f0c001d7270 CR3: 000000002cc60003 CR4: 0000000000770ef0 [ 100.613576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.614098] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.614650] PKRU: 55555554 [ 100.614831] Call Trace: [ 100.614963] <TASK> [ 100.615082] ? __warn (kernel/panic.c:677) [ 100.615310] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 100.615611] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 100.615927] ? handle_bug (arch/x86/kernel/traps.c:238) [ 100.616237] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 100.616572] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 100.616935] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 100.617308] br_dev_delete (net/bridge/br_if.c:396) [ 100.617631] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 100.618010] cleanup_net (net/core/net_namespace.c:630) [ 100.618332] ? process_one_work (kernel/workqueue.c:2606) [ 100.618721] process_one_work (kernel/workqueue.c:2633) [ 100.619070] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 100.619382] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 100.619753] kthread (kernel/kthread.c:388) [ 100.620046] ? __pfx_kthread (kernel/kthread.c:341) [ 100.620382] ret_from_fork (arch/x86/kernel/process.c:147) [ 100.620679] ? __pfx_kthread (kernel/kthread.c:341) [ 100.621002] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 100.709017] ------------[ cut here ]------------ | [ 100.709710] sysfs group 'bridge' not found for kobject 'br0' | [ 100.710423] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 100.711500] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 100.714351] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 100.715741] Workqueue: netns cleanup_net [ 100.716254] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 100.716653] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 100.718280] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 100.718646] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 100.719463] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 100.719992] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 100.720738] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d60374c610 [ 100.721368] R13: ffffb9c8c0063e08 R14: ffffa0d60374cb80 R15: ffffa0d60347ae50 [ 100.722021] FS: 0000000000000000(0000) GS:ffffa0d63ed00000(0000) knlGS:0000000000000000 [ 100.722848] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.723510] CR2: 00007f0c001d7270 CR3: 000000002cc60003 CR4: 0000000000770ef0 [ 100.724369] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.725346] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.726309] PKRU: 55555554 [ 100.726721] Call Trace: [ 100.727104] <TASK> [ 100.727445] ? __warn (kernel/panic.c:677) [ 100.727879] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 100.728297] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 100.728745] ? handle_bug (arch/x86/kernel/traps.c:238) [ 100.729219] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 100.729710] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 100.730167] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 100.730639] br_dev_delete (net/bridge/br_if.c:396) [ 100.731129] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 100.731662] cleanup_net (net/core/net_namespace.c:630) [ 100.732007] ? process_one_work (kernel/workqueue.c:2606) [ 100.732227] process_one_work (kernel/workqueue.c:2633) [ 100.732469] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 100.732688] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 100.733016] kthread (kernel/kthread.c:388) [ 100.733200] ? __pfx_kthread (kernel/kthread.c:341) [ 100.733396] ret_from_fork (arch/x86/kernel/process.c:147) [ 100.733588] ? __pfx_kthread (kernel/kthread.c:341) [ 100.733806] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 110.796976] ------------[ cut here ]------------ | [ 110.797510] sysfs group 'bridge' not found for kobject 'br0' | [ 110.798218] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 110.798827] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 110.801662] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 110.803271] Workqueue: netns cleanup_net [ 110.803845] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 110.804497] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 110.807071] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 110.807836] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 110.808807] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 110.809294] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 110.809911] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d605740610 [ 110.810384] R13: ffffb9c8c0063e08 R14: ffffa0d605740b80 R15: ffffa0d602994550 [ 110.811038] FS: 0000000000000000(0000) GS:ffffa0d63ed00000(0000) knlGS:0000000000000000 [ 110.811761] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 110.812495] CR2: 00007fc86cb49d40 CR3: 00000000035ee003 CR4: 0000000000770ef0 [ 110.813498] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 110.814447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 110.815431] PKRU: 55555554 [ 110.815807] Call Trace: [ 110.816157] <TASK> [ 110.816456] ? __warn (kernel/panic.c:677) [ 110.816947] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 110.817511] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 110.818017] ? handle_bug (arch/x86/kernel/traps.c:238) [ 110.818508] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 110.819064] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 110.819633] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 110.820120] br_dev_delete (net/bridge/br_if.c:396) [ 110.820531] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 110.821066] cleanup_net (net/core/net_namespace.c:630) [ 110.821543] ? process_one_work (kernel/workqueue.c:2606) [ 110.822073] process_one_work (kernel/workqueue.c:2633) [ 110.822591] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 110.823126] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 110.823712] kthread (kernel/kthread.c:388) [ 110.823941] ? __pfx_kthread (kernel/kthread.c:341) [ 110.824199] ret_from_fork (arch/x86/kernel/process.c:147) [ 110.824485] ? __pfx_kthread (kernel/kthread.c:341) [ 110.824851] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 110.951882] ------------[ cut here ]------------ | [ 110.952451] sysfs group 'bridge' not found for kobject 'br0' | [ 110.953099] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 110.953900] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 110.955620] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 110.956380] Workqueue: netns cleanup_net [ 110.956652] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 110.956986] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 110.958202] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 110.958552] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 110.959034] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 110.959505] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 110.959985] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d60374e610 [ 110.960453] R13: ffffb9c8c0063e08 R14: ffffa0d60374eb80 R15: ffffa0d603479750 [ 110.960938] FS: 0000000000000000(0000) GS:ffffa0d63ed00000(0000) knlGS:0000000000000000 [ 110.961473] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 110.961865] CR2: 00007fc86cb49d40 CR3: 00000000035ee003 CR4: 0000000000770ef0 [ 110.962336] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 110.962814] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 110.963286] PKRU: 55555554 [ 110.963473] Call Trace: [ 110.963660] <TASK> [ 110.963821] ? __warn (kernel/panic.c:677) [ 110.964048] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 110.964334] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 110.964592] ? handle_bug (arch/x86/kernel/traps.c:238) [ 110.964845] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 110.965108] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 110.965401] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 110.965697] br_dev_delete (net/bridge/br_if.c:396) [ 110.965950] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 110.966251] cleanup_net (net/core/net_namespace.c:630) [ 110.966501] ? process_one_work (kernel/workqueue.c:2606) [ 110.966795] process_one_work (kernel/workqueue.c:2633) [ 110.967075] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 110.967335] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 110.967625] kthread (kernel/kthread.c:388) [ 110.967859] ? __pfx_kthread (kernel/kthread.c:341) [ 110.968119] ret_from_fork (arch/x86/kernel/process.c:147) [ 110.968367] ? __pfx_kthread (kernel/kthread.c:341) [ 110.968623] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 119.978978] ------------[ cut here ]------------ | [ 119.979286] sysfs group 'bridge' not found for kobject 'br0' | [ 119.979697] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 119.980263] Modules linked in: cls_matchall act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 119.981972] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 119.982801] Workqueue: netns cleanup_net [ 119.983118] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 119.983509] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 119.984830] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 119.985278] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 119.985806] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 119.986310] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 119.986885] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d605740610 [ 119.987434] R13: ffffb9c8c0063e08 R14: ffffa0d605740b80 R15: ffffa0d603728050 [ 119.987948] FS: 0000000000000000(0000) GS:ffffa0d63ec00000(0000) knlGS:0000000000000000 [ 119.988429] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 119.988763] CR2: 000055c29f106dec CR3: 000000000259e001 CR4: 0000000000770ef0 [ 119.989201] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 119.989631] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 119.990035] PKRU: 55555554 [ 119.990224] Call Trace: [ 119.990392] <TASK> [ 119.990539] ? __warn (kernel/panic.c:677) [ 119.990776] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 119.991022] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 119.991264] ? handle_bug (arch/x86/kernel/traps.c:238) [ 119.991520] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 119.991768] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 119.992012] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 119.992274] br_dev_delete (net/bridge/br_if.c:396) [ 119.992510] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 119.992820] cleanup_net (net/core/net_namespace.c:630) [ 119.993059] ? process_one_work (kernel/workqueue.c:2606) [ 119.993306] process_one_work (kernel/workqueue.c:2633) [ 119.993607] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 119.993877] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 119.994171] kthread (kernel/kthread.c:388) [ 119.994377] ? __pfx_kthread (kernel/kthread.c:341) [ 119.994595] ret_from_fork (arch/x86/kernel/process.c:147) [ 119.994845] ? __pfx_kthread (kernel/kthread.c:341) [ 119.995083] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 120.103952] ------------[ cut here ]------------ | [ 120.104344] sysfs group 'bridge' not found for kobject 'br0' | [ 120.104849] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 120.105479] Modules linked in: cls_matchall act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 120.107417] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 120.108295] Workqueue: netns cleanup_net [ 120.108612] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 120.109006] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 120.110454] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 120.110880] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 120.111443] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 120.112012] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 120.112564] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d605742610 [ 120.113135] R13: ffffb9c8c0063e08 R14: ffffa0d605742b80 R15: ffffa0d6028aae50 [ 120.113712] FS: 0000000000000000(0000) GS:ffffa0d63ed80000(0000) knlGS:0000000000000000 [ 120.114334] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 120.114798] CR2: 00007f5d7f9ac000 CR3: 000000002cc60006 CR4: 0000000000770ef0 [ 120.115363] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 120.115934] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 120.116486] PKRU: 55555554 [ 120.116721] Call Trace: [ 120.116925] <TASK> [ 120.117108] ? __warn (kernel/panic.c:677) [ 120.117376] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 120.117723] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 120.118028] ? handle_bug (arch/x86/kernel/traps.c:238) [ 120.118313] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 120.118624] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 120.118981] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 120.119332] br_dev_delete (net/bridge/br_if.c:396) [ 120.119628] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 120.119993] cleanup_net (net/core/net_namespace.c:630) [ 120.120291] ? process_one_work (kernel/workqueue.c:2606) [ 120.120627] process_one_work (kernel/workqueue.c:2633) [ 120.120963] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 120.121275] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 120.121613] kthread (kernel/kthread.c:388) [ 120.121888] ? __pfx_kthread (kernel/kthread.c:341) [ 120.122194] ret_from_fork (arch/x86/kernel/process.c:147) [ 120.122486] ? __pfx_kthread (kernel/kthread.c:341) [ 120.122804] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 132.336914] ------------[ cut here ]------------ | [ 132.337356] sysfs group 'bridge' not found for kobject 'br0' | [ 132.337786] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 132.338274] Modules linked in: cls_matchall act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 132.339968] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 132.340697] Workqueue: netns cleanup_net [ 132.341179] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 132.341505] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 132.343051] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 132.343561] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 132.344198] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 132.344970] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 132.345820] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d6024d8610 [ 132.346801] R13: ffffb9c8c0063e08 R14: ffffa0d6024d8b80 R15: ffffa0d603729750 [ 132.347800] FS: 0000000000000000(0000) GS:ffffa0d63ed00000(0000) knlGS:0000000000000000 [ 132.348769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 132.349337] CR2: 000055c2a02bf6c8 CR3: 000000002cc60001 CR4: 0000000000770ef0 [ 132.350095] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 132.350737] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 132.351415] PKRU: 55555554 [ 132.351609] Call Trace: [ 132.351896] <TASK> [ 132.352150] ? __warn (kernel/panic.c:677) [ 132.352438] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 132.352853] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 132.353052] ? handle_bug (arch/x86/kernel/traps.c:238) [ 132.353240] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 132.353478] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 132.353723] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 132.353978] br_dev_delete (net/bridge/br_if.c:396) [ 132.354171] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 132.354404] cleanup_net (net/core/net_namespace.c:630) [ 132.354600] ? process_one_work (kernel/workqueue.c:2606) [ 132.354826] process_one_work (kernel/workqueue.c:2633) [ 132.355041] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 132.355242] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 132.355466] kthread (kernel/kthread.c:388) [ 132.355637] ? __pfx_kthread (kernel/kthread.c:341) [ 132.355841] ret_from_fork (arch/x86/kernel/process.c:147) [ 132.356035] ? __pfx_kthread (kernel/kthread.c:341) [ 132.356232] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 132.442875] ------------[ cut here ]------------ | [ 132.443131] sysfs group 'bridge' not found for kobject 'br0' | [ 132.443447] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 132.443889] Modules linked in: cls_matchall act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 132.445161] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 132.445748] Workqueue: netns cleanup_net [ 132.445958] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 132.446206] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 132.447177] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 132.447458] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 132.447846] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 132.448218] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 132.448601] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d602ac8610 [ 132.448991] R13: ffffb9c8c0063e08 R14: ffffa0d602ac8b80 R15: ffffa0d6028aae50 [ 132.449375] FS: 0000000000000000(0000) GS:ffffa0d63ed00000(0000) knlGS:0000000000000000 [ 132.449821] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 132.450140] CR2: 000055c2a02bf6c8 CR3: 000000002cc60001 CR4: 0000000000770ef0 [ 132.450523] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 132.450917] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 132.451297] PKRU: 55555554 [ 132.451452] Call Trace: [ 132.451595] <TASK> [ 132.451729] ? __warn (kernel/panic.c:677) [ 132.451918] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 132.452155] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 132.452368] ? handle_bug (arch/x86/kernel/traps.c:238) [ 132.452565] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 132.452791] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 132.453032] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 132.453282] br_dev_delete (net/bridge/br_if.c:396) [ 132.453497] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 132.453880] cleanup_net (net/core/net_namespace.c:630) [ 132.454083] ? process_one_work (kernel/workqueue.c:2606) [ 132.454303] process_one_work (kernel/workqueue.c:2633) [ 132.454520] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 132.454727] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 132.454953] kthread (kernel/kthread.c:388) [ 132.455124] ? __pfx_kthread (kernel/kthread.c:341) [ 132.455323] ret_from_fork (arch/x86/kernel/process.c:147) [ 132.455517] ? __pfx_kthread (kernel/kthread.c:341) [ 132.455724] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 168.453891] ------------[ cut here ]------------ | [ 168.454353] sysfs group 'bridge' not found for kobject 'br0' | [ 168.454898] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 168.455593] Modules linked in: cls_matchall act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel [ 168.457572] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 168.458196] Workqueue: netns cleanup_net [ 168.458424] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 168.458691] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... [ 168.459686] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 [ 168.459952] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff [ 168.460340] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 168.460725] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 168.461104] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d6024de610 [ 168.461491] R13: ffffb9c8c0063e08 R14: ffffa0d6024deb80 R15: ffffa0d6028ac550 [ 168.461877] FS: 0000000000000000(0000) GS:ffffa0d63ed00000(0000) knlGS:0000000000000000 [ 168.462313] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 168.462617] CR2: 00007fa90942c000 CR3: 000000002cc60002 CR4: 0000000000770ef0 [ 168.463005] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 168.463575] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 168.463955] PKRU: 55555554 [ 168.464104] Call Trace: [ 168.464241] <TASK> [ 168.464373] ? __warn (kernel/panic.c:677) [ 168.464555] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 168.464796] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 168.465007] ? handle_bug (arch/x86/kernel/traps.c:238) [ 168.465202] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 168.465414] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 168.465640] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 168.465868] br_dev_delete (net/bridge/br_if.c:396) [ 168.466061] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 168.466291] cleanup_net (net/core/net_namespace.c:630) [ 168.466490] ? process_one_work (kernel/workqueue.c:2606) [ 168.466713] process_one_work (kernel/workqueue.c:2633) [ 168.466927] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 168.467124] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 168.467345] kthread (kernel/kthread.c:388) [ 168.467519] ? __pfx_kthread (kernel/kthread.c:341) [ 168.467730] ret_from_fork (arch/x86/kernel/process.c:147) [ 168.467923] ? __pfx_kthread (kernel/kthread.c:341) [ 168.468119] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | ts: net: test_br[ 168.580264] sysfs group 'bridge' not found for kobject 'br0' | idge_backup_port[ 168.580662] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | .sh # exit=1[ 168.581140] Modules linked in: cls_matchall act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel xt_mark nft_compat nf_tables libcrc32c sch_ingress act_mirred cls_basic sch_fq_codel | [ 168.582513] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 168.583227] Workqueue: netns cleanup_net make[1]: Leaving[ 168.583482] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) directory '/hom[ 168.583836] 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 b3 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 b3 mov $0xffffffffb392cda0,%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) ... e/virtme/testing[ 168.584860] RSP: 0018:ffffb9c8c0063d70 EFLAGS: 00010286 -1/tools/testing[ 168.585209] RAX: 0000000000000000 RBX: ffffffffb35472c0 RCX: 00000000ffffdfff /selftests/net'[ 168.585698] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 168.586161] RBP: 0000000000000000 R08: ffffffffb3d78508 R09: 00000000ffffdfff [ 168.586553] R10: ffffffffb3c98520 R11: ffffffffb3d48520 R12: ffffa0d6024da610 [ 168.586978] R13: ffffb9c8c0063e08 R14: ffffa0d6024dab80 R15: ffffa0d6028aae50 [ 168.587546] FS: 0000000000000000(0000) GS:ffffa0d63ed80000(0000) knlGS:0000000000000000 [ 168.588004] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 168.588300] CR2: 00007f750bbd5a30 CR3: 000000002cc60005 CR4: 0000000000770ef0 [ 168.588673] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 168.589034] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 168.589425] PKRU: 55555554 [ 168.589605] Call Trace: [ 168.589786] <TASK> [ 168.590018] ? __warn (kernel/panic.c:677) make: Leaving di[ 168.590350] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) rectory '/home/v[ 168.590796] ? report_bug (lib/bug.c:201 lib/bug.c:219) irtme/testing-1/[ 168.591160] ? handle_bug (arch/x86/kernel/traps.c:238) tools/testing/se[ 168.591522] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) lftests' [ 168.591913] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 168.592317] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 168.592705] br_dev_delete (net/bridge/br_if.c:396) [ 168.593208] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 168.593593] cleanup_net (net/core/net_namespace.c:630) [ 168.593896] ? process_one_work (kernel/workqueue.c:2606) [ 168.594267] process_one_work (kernel/workqueue.c:2633) xx__-> [ 168.594588] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 168.594932] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 168.595268] kthread (kernel/kthread.c:388) [ 168.595517] ? __pfx_kthread (kernel/kthread.c:341) [ 168.595826] ret_from_fork (arch/x86/kernel/process.c:147) [ 168.596113] ? __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