====================================== | [ 250.763191] ------------[ cut here ]------------ | [ 250.763776] refcount_t: underflow; use-after-free. | [ 250.764391] WARNING: CPU: 3 PID: 68 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 250.765318] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 250.767167] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 250.768270] Workqueue: netns cleanup_net [ 250.768804] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 250.769551] 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 53 a5 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 53 a5 mov $0xffffffffa55337b8,%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 [ 250.771664] RSP: 0018:ffffbd6740263d78 EFLAGS: 00010286 [ 250.772380] RAX: 0000000000000000 RBX: ffff9dc843f92000 RCX: 00000000ffffdfff [ 250.773095] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 250.773558] RBP: ffff9dc843f92610 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 250.773924] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc843f92000 [ 250.774316] R13: ffffbd6740263e08 R14: ffff9dc843f92b80 R15: ffffffffa6e78f90 [ 250.774731] FS: 0000000000000000(0000) GS:ffff9dc87ed80000(0000) knlGS:0000000000000000 [ 250.775379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 250.775745] CR2: 00007f2f91a5ea30 CR3: 0000000003dd6004 CR4: 0000000000770ef0 [ 250.776146] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 250.776668] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 250.777235] PKRU: 55555554 [ 250.777452] Call Trace: [ 250.777653] <TASK> [ 250.777839] ? __warn (kernel/panic.c:677) [ 250.778084] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 250.778480] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 250.778809] ? handle_bug (arch/x86/kernel/traps.c:238) [ 250.779135] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 250.779461] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 250.779873] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 250.780448] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 250.780888] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 250.781244] br_dev_delete (net/bridge/br_if.c:396) [ 250.781581] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 250.781957] cleanup_net (net/core/net_namespace.c:630) [ 250.782289] ? process_one_work (kernel/workqueue.c:2606) [ 250.782647] process_one_work (kernel/workqueue.c:2633) [ 250.783011] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 250.783359] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 250.783723] kthread (kernel/kthread.c:388) [ 250.783954] ? __pfx_kthread (kernel/kthread.c:341) [ 250.784279] ret_from_fork (arch/x86/kernel/process.c:147) [ 250.784565] ? __pfx_kthread (kernel/kthread.c:341) [ 250.784888] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 250.788708] ------------[ cut here ]------------ | [ 250.789001] sysfs group 'bridge' not found for kobject 'br0' | [ 250.789434] WARNING: CPU: 3 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 250.789854] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 250.791420] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 250.792455] Workqueue: netns cleanup_net [ 250.792850] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 250.793343] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%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) ... [ 250.794944] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 250.795591] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 250.796512] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 250.797462] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 250.798421] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc843f92610 [ 250.799170] R13: ffffbd6740263e08 R14: ffff9dc843f92b80 R15: ffffffffa6e78f90 [ 250.799779] FS: 0000000000000000(0000) GS:ffff9dc87ed80000(0000) knlGS:0000000000000000 [ 250.800448] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 250.800922] CR2: 00007f2f91a5ea30 CR3: 0000000003dd6004 CR4: 0000000000770ef0 [ 250.801462] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 250.802054] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 250.802579] PKRU: 55555554 [ 250.802725] Call Trace: [ 250.802890] <TASK> [ 250.803010] ? __warn (kernel/panic.c:677) [ 250.803223] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 250.803515] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 250.803711] ? handle_bug (arch/x86/kernel/traps.c:238) [ 250.803907] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 250.804110] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 250.804335] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 250.804554] br_dev_delete (net/bridge/br_if.c:396) [ 250.804748] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 250.804988] cleanup_net (net/core/net_namespace.c:630) [ 250.805181] ? process_one_work (kernel/workqueue.c:2606) [ 250.805401] process_one_work (kernel/workqueue.c:2633) [ 250.805616] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 250.805821] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 250.806047] kthread (kernel/kthread.c:388) [ 250.806215] ? __pfx_kthread (kernel/kthread.c:341) [ 250.806414] ret_from_fork (arch/x86/kernel/process.c:147) [ 250.806610] ? __pfx_kthread (kernel/kthread.c:341) [ 250.806816] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 250.809333] ------------[ cut here ]------------ | [ 250.809573] sysfs group 'bridge' not found for kobject 'br0' | [ 250.809887] WARNING: CPU: 3 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 250.810297] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 250.811460] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 250.812041] Workqueue: netns cleanup_net [ 250.812247] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 250.812494] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%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) ... [ 250.813425] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 250.813692] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 250.814059] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 250.814421] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 250.814788] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc843f90610 [ 250.815152] R13: ffffbd6740263e08 R14: ffff9dc843f90b80 R15: ffffffffa6e78f90 [ 250.815512] FS: 0000000000000000(0000) GS:ffff9dc87ed80000(0000) knlGS:0000000000000000 [ 250.815927] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 250.816221] CR2: 00007f2f91a5ea30 CR3: 0000000003dd6004 CR4: 0000000000770ef0 [ 250.816584] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 250.816964] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 250.817334] PKRU: 55555554 [ 250.817479] Call Trace: [ 250.817612] <TASK> [ 250.817727] ? __warn (kernel/panic.c:677) [ 250.817905] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 250.818124] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 250.818321] ? handle_bug (arch/x86/kernel/traps.c:238) [ 250.818507] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 250.818709] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 250.818939] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 250.819158] br_dev_delete (net/bridge/br_if.c:396) [ 250.819349] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 250.819581] cleanup_net (net/core/net_namespace.c:630) [ 250.819773] ? process_one_work (kernel/workqueue.c:2606) [ 250.819995] process_one_work (kernel/workqueue.c:2633) [ 250.820208] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 250.820407] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 250.820630] kthread (kernel/kthread.c:388) [ 250.820807] ? __pfx_kthread (kernel/kthread.c:341) [ 250.821005] ret_from_fork (arch/x86/kernel/process.c:147) [ 250.821197] ? __pfx_kthread (kernel/kthread.c:341) [ 250.821394] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 270.440027] ------------[ cut here ]------------ | [ 270.440528] sysfs group 'bridge' not found for kobject 'br0' | [ 270.441167] WARNING: CPU: 3 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 270.442140] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 270.443953] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 270.444746] Workqueue: netns cleanup_net [ 270.445111] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 270.445685] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%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) ... [ 270.447412] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 270.447808] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 270.448678] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 270.449557] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 270.450385] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc841934610 [ 270.451241] R13: ffffbd6740263e08 R14: ffff9dc841934b80 R15: ffff9dc843c4c550 [ 270.452131] FS: 0000000000000000(0000) GS:ffff9dc87ed80000(0000) knlGS:0000000000000000 [ 270.453204] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 270.453900] CR2: 00007f9a335af000 CR3: 0000000003dd6005 CR4: 0000000000770ef0 [ 270.454691] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 270.455470] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 270.456164] PKRU: 55555554 [ 270.456486] Call Trace: [ 270.456736] <TASK> [ 270.456976] ? __warn (kernel/panic.c:677) [ 270.457358] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 270.457833] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 270.458193] ? handle_bug (arch/x86/kernel/traps.c:238) [ 270.458557] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 270.459005] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 270.459337] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 270.459627] br_dev_delete (net/bridge/br_if.c:396) [ 270.459910] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 270.460261] cleanup_net (net/core/net_namespace.c:630) [ 270.460554] ? process_one_work (kernel/workqueue.c:2606) [ 270.460960] process_one_work (kernel/workqueue.c:2633) [ 270.461241] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 270.461504] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 270.461806] kthread (kernel/kthread.c:388) [ 270.462108] ? __pfx_kthread (kernel/kthread.c:341) [ 270.462523] ret_from_fork (arch/x86/kernel/process.c:147) [ 270.462917] ? __pfx_kthread (kernel/kthread.c:341) [ 270.463321] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 270.547011] ------------[ cut here ]------------ | [ 270.547491] sysfs group 'bridge' not found for kobject 'br0' | [ 270.548194] WARNING: CPU: 3 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 270.549190] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 270.552145] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 270.553463] Workqueue: netns cleanup_net [ 270.553938] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 270.554481] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%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) ... [ 270.556540] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 270.556953] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 270.557492] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 270.558153] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 270.558670] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc8428aa610 [ 270.559310] R13: ffffbd6740263e08 R14: ffff9dc8428aab80 R15: ffff9dc842bac550 [ 270.559977] FS: 0000000000000000(0000) GS:ffff9dc87ed80000(0000) knlGS:0000000000000000 [ 270.560808] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 270.561483] CR2: 00007f9a335af000 CR3: 000000000b060004 CR4: 0000000000770ef0 [ 270.562317] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 270.563170] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 270.564107] PKRU: 55555554 [ 270.564494] Call Trace: [ 270.564882] <TASK> [ 270.565198] ? __warn (kernel/panic.c:677) [ 270.565619] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 270.566205] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 270.566681] ? handle_bug (arch/x86/kernel/traps.c:238) [ 270.567037] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 270.567523] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 270.567966] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 270.568418] br_dev_delete (net/bridge/br_if.c:396) [ 270.568798] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 270.569242] cleanup_net (net/core/net_namespace.c:630) [ 270.569644] ? process_one_work (kernel/workqueue.c:2606) [ 270.570089] process_one_work (kernel/workqueue.c:2633) [ 270.570436] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 270.570718] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 270.571068] kthread (kernel/kthread.c:388) [ 270.571328] ? __pfx_kthread (kernel/kthread.c:341) [ 270.571589] ret_from_fork (arch/x86/kernel/process.c:147) [ 270.571849] ? __pfx_kthread (kernel/kthread.c:341) [ 270.572108] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 291.885161] ------------[ cut here ]------------ | [ 291.885577] sysfs group 'bridge' not found for kobject 'br0' | [ 291.886102] WARNING: CPU: 0 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 291.886740] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 291.888545] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 291.889232] Workqueue: netns cleanup_net [ 291.889457] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 291.889741] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%rdi 24: e8 ac 67 c5 ff call 0xffffffffffc567d5 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 5b pop %rbx 2f: 5d pop %rbp 30: 41 5c pop %r12 32: c3 ret 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 66 data16 38: 66 data16 39: 2e cs 3a: 0f .byte 0xf 3b: 1f (bad) 3c: 84 00 test %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 5b pop %rbx 5: 5d pop %rbp 6: 41 5c pop %r12 8: c3 ret 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: 66 data16 e: 66 data16 f: 2e cs 10: 0f .byte 0xf 11: 1f (bad) 12: 84 00 test %al,(%rax) ... [ 291.890712] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 291.891037] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 291.891409] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 291.891799] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 291.892203] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc842a88610 [ 291.892590] R13: ffffbd6740263e08 R14: ffff9dc842a88b80 R15: ffff9dc8426e2e50 [ 291.892982] FS: 0000000000000000(0000) GS:ffff9dc87ec00000(0000) knlGS:0000000000000000 [ 291.893422] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 291.893753] CR2: 00007ff1be7abd40 CR3: 0000000003dd6001 CR4: 0000000000770ef0 [ 291.894154] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 291.894534] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 291.894928] PKRU: 55555554 [ 291.895124] Call Trace: [ 291.895290] <TASK> [ 291.895418] ? __warn (kernel/panic.c:677) [ 291.895620] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 291.895879] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 291.896109] ? handle_bug (arch/x86/kernel/traps.c:238) [ 291.896305] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 291.896532] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 291.896796] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 291.897058] br_dev_delete (net/bridge/br_if.c:396) [ 291.897274] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 291.897534] cleanup_net (net/core/net_namespace.c:630) [ 291.897755] ? process_one_work (kernel/workqueue.c:2606) [ 291.898015] process_one_work (kernel/workqueue.c:2633) [ 291.898242] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 291.898499] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 291.898761] kthread (kernel/kthread.c:388) [ 291.898967] ? __pfx_kthread (kernel/kthread.c:341) [ 291.899235] ret_from_fork (arch/x86/kernel/process.c:147) [ 291.899456] ? __pfx_kthread (kernel/kthread.c:341) [ 291.899681] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 291.997033] ------------[ cut here ]------------ | [ 291.997326] sysfs group 'bridge' not found for kobject 'br0' | [ 291.997661] WARNING: CPU: 0 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 291.998119] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 291.999425] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 292.000050] Workqueue: netns cleanup_net [ 292.000263] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 292.000516] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%rdi 24: e8 ac 67 c5 ff call 0xffffffffffc567d5 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 5b pop %rbx 2f: 5d pop %rbp 30: 41 5c pop %r12 32: c3 ret 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 66 data16 38: 66 data16 39: 2e cs 3a: 0f .byte 0xf 3b: 1f (bad) 3c: 84 00 test %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 5b pop %rbx 5: 5d pop %rbp 6: 41 5c pop %r12 8: c3 ret 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: 66 data16 e: 66 data16 f: 2e cs 10: 0f .byte 0xf 11: 1f (bad) 12: 84 00 test %al,(%rax) ... [ 292.001497] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 292.001855] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 292.002262] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 292.002699] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 292.003162] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc8423fc610 [ 292.003602] R13: ffffbd6740263e08 R14: ffff9dc8423fcb80 R15: ffff9dc842ba8050 [ 292.004015] FS: 0000000000000000(0000) GS:ffff9dc87ec00000(0000) knlGS:0000000000000000 [ 292.004462] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 292.004800] CR2: 00007ff1be7abd40 CR3: 000000000b060005 CR4: 0000000000770ef0 [ 292.005237] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 292.005661] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 292.006093] PKRU: 55555554 [ 292.006293] Call Trace: [ 292.006457] <TASK> [ 292.006628] ? __warn (kernel/panic.c:677) [ 292.006850] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 292.007097] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 292.007343] ? handle_bug (arch/x86/kernel/traps.c:238) [ 292.007581] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 292.007814] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 292.008055] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 292.008308] br_dev_delete (net/bridge/br_if.c:396) [ 292.008550] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 292.008842] cleanup_net (net/core/net_namespace.c:630) [ 292.009071] ? process_one_work (kernel/workqueue.c:2606) [ 292.009402] process_one_work (kernel/workqueue.c:2633) [ 292.009661] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 292.009917] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 292.010191] kthread (kernel/kthread.c:388) [ 292.010406] ? __pfx_kthread (kernel/kthread.c:341) [ 292.010641] ret_from_fork (arch/x86/kernel/process.c:147) [ 292.010870] ? __pfx_kthread (kernel/kthread.c:341) [ 292.011103] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 301.270015] ------------[ cut here ]------------ | [ 301.270302] sysfs group 'bridge' not found for kobject 'br0' | [ 301.270709] WARNING: CPU: 2 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 301.271163] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 301.272409] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 301.273053] Workqueue: netns cleanup_net [ 301.273269] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 301.273534] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%rdi 24: e8 ac 67 c5 ff call 0xffffffffffc567d5 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 5b pop %rbx 2f: 5d pop %rbp 30: 41 5c pop %r12 32: c3 ret 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 66 data16 38: 66 data16 39: 2e cs 3a: 0f .byte 0xf 3b: 1f (bad) 3c: 84 00 test %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 5b pop %rbx 5: 5d pop %rbp 6: 41 5c pop %r12 8: c3 ret 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: 66 data16 e: 66 data16 f: 2e cs 10: 0f .byte 0xf 11: 1f (bad) 12: 84 00 test %al,(%rax) ... [ 301.274510] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 301.274799] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 301.275174] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 301.275554] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 301.275938] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc841c14610 [ 301.276306] R13: ffffbd6740263e08 R14: ffff9dc841c14b80 R15: ffff9dc8426e4550 [ 301.276683] FS: 0000000000000000(0000) GS:ffff9dc87ed00000(0000) knlGS:0000000000000000 [ 301.277200] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 301.277620] CR2: 00007ffe7949fcf8 CR3: 000000000b060004 CR4: 0000000000770ef0 [ 301.278175] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 301.278541] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 301.278909] PKRU: 55555554 [ 301.279063] Call Trace: [ 301.279204] <TASK> [ 301.279333] ? __warn (kernel/panic.c:677) [ 301.279528] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 301.279764] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 301.279979] ? handle_bug (arch/x86/kernel/traps.c:238) [ 301.280172] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 301.280375] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 301.280608] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 301.280838] br_dev_delete (net/bridge/br_if.c:396) [ 301.281050] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 301.281296] cleanup_net (net/core/net_namespace.c:630) [ 301.281499] ? process_one_work (kernel/workqueue.c:2606) [ 301.281721] process_one_work (kernel/workqueue.c:2633) [ 301.281950] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 301.282160] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 301.282397] kthread (kernel/kthread.c:388) [ 301.282572] ? __pfx_kthread (kernel/kthread.c:341) [ 301.282769] ret_from_fork (arch/x86/kernel/process.c:147) [ 301.282987] ? __pfx_kthread (kernel/kthread.c:341) [ 301.283194] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 301.419041] ------------[ cut here ]------------ | [ 301.419380] sysfs group 'bridge' not found for kobject 'br0' | [ 301.420047] WARNING: CPU: 3 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 301.421073] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c [ 301.423344] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 301.424859] Workqueue: netns cleanup_net [ 301.425268] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 301.425950] 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 52 a5 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 52 a5 mov $0xffffffffa552cda0,%rdi 24: e8 ac 67 c5 ff call 0xffffffffffc567d5 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 5b pop %rbx 2f: 5d pop %rbp 30: 41 5c pop %r12 32: c3 ret 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 66 data16 38: 66 data16 39: 2e cs 3a: 0f .byte 0xf 3b: 1f (bad) 3c: 84 00 test %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 5b pop %rbx 5: 5d pop %rbp 6: 41 5c pop %r12 8: c3 ret 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: 66 data16 e: 66 data16 f: 2e cs 10: 0f .byte 0xf 11: 1f (bad) 12: 84 00 test %al,(%rax) ... [ 301.428516] RSP: 0018:ffffbd6740263d70 EFLAGS: 00010286 [ 301.429307] RAX: 0000000000000000 RBX: ffffffffa51472c0 RCX: 00000000ffffdfff [ 301.430217] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 301.430758] RBP: 0000000000000000 R08: ffffffffa5978508 R09: 00000000ffffdfff [ 301.431277] R10: ffffffffa5898520 R11: ffffffffa5948520 R12: ffff9dc841c10610 [ 301.431752] R13: ffffbd6740263e08 R14: ffff9dc841c10b80 R15: ffffffffa6e78f90 [ 301.432241] FS: 0000000000000000(0000) GS:ffff9dc87ed80000(0000) knlGS:0000000000000000 [ 301.432897] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 301.433463] CR2: 00007f2f91a5ea30 CR3: 000000000b060006 CR4: 0000000000770ef0 [ 301.434031] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 301.434527] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 301.435154] PKRU: 55555554 [ 301.435491] Call Trace: [ 301.435805] <TASK> [ 301.436035] ? __warn (kernel/panic.c:677) [ 301.436419] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 301.436973] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 301.437403] ? handle_bug (arch/x86/kernel/traps.c:238) [ 301.437848] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 301.438288] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 301.438759] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 301.439191] br_dev_delete (net/bridge/br_if.c:396) [ 301.439588] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 301.440283] cleanup_net (net/core/net_namespace.c:630) [ 301.440766] ? process_one_work (kernel/workqueue.c:2606) [ 301.441356] process_one_work (kernel/workqueue.c:2633) [ 301.441937] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 301.442566] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 301.443199] kthread (kernel/kthread.c:388) [ 301.443795] ? __pfx_kthread (kernel/kthread.c:341) [ 301.444290] ret_from_fork (arch/x86/kernel/process.c:147) [ 301.444808] ? __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