====================================== | [ 50.891583] ------------[ cut here ]------------ | [ 50.891841] refcount_t: underflow; use-after-free. | [ 50.892110] WARNING: CPU: 2 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 50.892658] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 50.894390] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 50.895678] Workqueue: netns cleanup_net [ 50.896163] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 50.896775] 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 13 ae 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 13 ae mov $0xffffffffae1337b8,%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 [ 50.898854] RSP: 0018:ffff97c500063d78 EFLAGS: 00010286 [ 50.899515] RAX: 0000000000000000 RBX: ffff88c942bb8000 RCX: 00000000ffffdfff [ 50.900287] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 50.901111] RBP: ffff88c942bb8610 R08: ffffffffae578508 R09: 00000000ffffdfff [ 50.901852] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c942bb8000 [ 50.902570] R13: ffff97c500063e08 R14: ffff88c942bb8b80 R15: ffff88c945245c50 [ 50.903230] FS: 0000000000000000(0000) GS:ffff88c97ed00000(0000) knlGS:0000000000000000 [ 50.903984] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.904448] CR2: 00007f8951349270 CR3: 0000000038e60005 CR4: 0000000000770ef0 [ 50.905087] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.905717] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.906081] PKRU: 55555554 [ 50.906252] Call Trace: [ 50.906407] <TASK> [ 50.906525] ? __warn (kernel/panic.c:677) [ 50.906736] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 50.906986] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 50.907191] ? handle_bug (arch/x86/kernel/traps.c:238) [ 50.907385] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 50.907585] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 50.907810] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 50.908048] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 50.908298] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 50.908494] br_dev_delete (net/bridge/br_if.c:396) [ 50.908687] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 50.908918] cleanup_net (net/core/net_namespace.c:630) [ 50.909119] ? process_one_work (kernel/workqueue.c:2606) [ 50.909347] process_one_work (kernel/workqueue.c:2633) [ 50.909581] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 50.909780] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 50.910008] kthread (kernel/kthread.c:388) [ 50.910222] ? __pfx_kthread (kernel/kthread.c:341) [ 50.910534] ret_from_fork (arch/x86/kernel/process.c:147) [ 50.910781] ? __pfx_kthread (kernel/kthread.c:341) [ 50.911073] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 50.914832] ------------[ cut here ]------------ | [ 50.915224] sysfs group 'bridge' not found for kobject 'br0' | [ 50.915915] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 50.916538] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 50.919478] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 50.920904] Workqueue: netns cleanup_net [ 50.921347] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 50.921884] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 50.923734] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 50.924342] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 50.925060] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 50.925808] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 50.926558] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c942bb8610 [ 50.927229] R13: ffff97c500063e08 R14: ffff88c942bb8b80 R15: ffff88c945245c50 [ 50.927968] FS: 0000000000000000(0000) GS:ffff88c97ed00000(0000) knlGS:0000000000000000 [ 50.928559] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.929069] CR2: 00007f8951349270 CR3: 0000000038e60005 CR4: 0000000000770ef0 [ 50.929610] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.930486] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.931220] PKRU: 55555554 [ 50.931579] Call Trace: [ 50.931973] <TASK> [ 50.932340] ? __warn (kernel/panic.c:677) [ 50.932829] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 50.933494] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 50.934124] ? handle_bug (arch/x86/kernel/traps.c:238) [ 50.934687] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 50.935302] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 50.935941] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 50.936608] br_dev_delete (net/bridge/br_if.c:396) [ 50.937194] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 50.937891] cleanup_net (net/core/net_namespace.c:630) [ 50.938280] ? process_one_work (kernel/workqueue.c:2606) [ 50.938701] process_one_work (kernel/workqueue.c:2633) [ 50.939091] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 50.939438] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 50.939834] kthread (kernel/kthread.c:388) [ 50.940138] ? __pfx_kthread (kernel/kthread.c:341) [ 50.940513] ret_from_fork (arch/x86/kernel/process.c:147) [ 50.940820] ? __pfx_kthread (kernel/kthread.c:341) [ 50.941222] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 51.034469] ------------[ cut here ]------------ | [ 51.034835] sysfs group 'bridge' not found for kobject 'br0' | [ 51.035458] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 51.035980] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 51.038148] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 51.039286] Workqueue: netns cleanup_net [ 51.039692] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 51.040159] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 51.041905] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 51.042433] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 51.042945] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 51.043383] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 51.043756] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c941934610 [ 51.044137] R13: ffff97c500063e08 R14: ffff88c941934b80 R15: ffffffffafa78f90 [ 51.044769] FS: 0000000000000000(0000) GS:ffff88c97ed00000(0000) knlGS:0000000000000000 [ 51.045266] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.045761] CR2: 00007f61e05367f0 CR3: 0000000038e60005 CR4: 0000000000770ef0 [ 51.046433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.047128] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.047838] PKRU: 55555554 [ 51.048102] Call Trace: [ 51.048348] <TASK> [ 51.048557] ? __warn (kernel/panic.c:677) [ 51.048888] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 51.049322] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 51.049725] ? handle_bug (arch/x86/kernel/traps.c:238) [ 51.050088] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 51.050488] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 51.050925] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 51.051344] br_dev_delete (net/bridge/br_if.c:396) [ 51.051676] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 51.052071] cleanup_net (net/core/net_namespace.c:630) [ 51.052451] ? process_one_work (kernel/workqueue.c:2606) [ 51.052826] process_one_work (kernel/workqueue.c:2633) [ 51.053185] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 51.053540] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 51.053922] kthread (kernel/kthread.c:388) [ 51.054200] ? __pfx_kthread (kernel/kthread.c:341) [ 51.054597] ret_from_fork (arch/x86/kernel/process.c:147) [ 51.054855] ? __pfx_kthread (kernel/kthread.c:341) [ 51.055075] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 54.521504] ------------[ cut here ]------------ | [ 54.521784] sysfs group 'bridge' not found for kobject 'br0' | [ 54.522097] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 54.522552] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 54.523816] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 54.524417] Workqueue: netns cleanup_net [ 54.524653] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.524930] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 54.525903] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 54.526202] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 54.526609] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 54.527011] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 54.527435] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c9455de610 [ 54.527826] R13: ffff97c500063e08 R14: ffff88c9455deb80 R15: ffff88c945245c50 [ 54.528214] FS: 0000000000000000(0000) GS:ffff88c97ec00000(0000) knlGS:0000000000000000 [ 54.528665] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.529013] CR2: 00007ffe94fd7fe0 CR3: 0000000038e60006 CR4: 0000000000770ef0 [ 54.529407] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.529810] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.530286] PKRU: 55555554 [ 54.530532] Call Trace: [ 54.530707] <TASK> [ 54.530854] ? __warn (kernel/panic.c:677) [ 54.531043] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.531298] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 54.531528] ? handle_bug (arch/x86/kernel/traps.c:238) [ 54.531759] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 54.531978] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 54.532232] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.532489] br_dev_delete (net/bridge/br_if.c:396) [ 54.532717] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 54.532961] cleanup_net (net/core/net_namespace.c:630) [ 54.533184] ? process_one_work (kernel/workqueue.c:2606) [ 54.533442] process_one_work (kernel/workqueue.c:2633) [ 54.533685] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 54.533897] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 54.534147] kthread (kernel/kthread.c:388) [ 54.534355] ? __pfx_kthread (kernel/kthread.c:341) [ 54.534585] ret_from_fork (arch/x86/kernel/process.c:147) [ 54.534788] ? __pfx_kthread (kernel/kthread.c:341) [ 54.535014] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 54.644563] ------------[ cut here ]------------ | [ 54.645203] sysfs group 'bridge' not found for kobject 'br0' | [ 54.645841] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 54.646532] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 54.648880] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 54.650286] Workqueue: netns cleanup_net [ 54.650700] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.651172] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 54.652979] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 54.653464] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 54.654119] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 54.654762] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 54.655353] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c9455da610 [ 54.655967] R13: ffff97c500063e08 R14: ffff88c9455dab80 R15: ffffffffafa78f90 [ 54.656837] FS: 0000000000000000(0000) GS:ffff88c97ed80000(0000) knlGS:0000000000000000 [ 54.657764] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.658376] CR2: 00007fe3c2f5a270 CR3: 0000000038e60002 CR4: 0000000000770ef0 [ 54.659081] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.659717] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.660276] PKRU: 55555554 [ 54.660495] Call Trace: [ 54.660694] <TASK> [ 54.660873] ? __warn (kernel/panic.c:677) [ 54.661133] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.661478] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 54.661773] ? handle_bug (arch/x86/kernel/traps.c:238) [ 54.662052] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 54.662367] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 54.662705] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.663034] br_dev_delete (net/bridge/br_if.c:396) [ 54.663334] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 54.663684] cleanup_net (net/core/net_namespace.c:630) [ 54.663965] ? process_one_work (kernel/workqueue.c:2606) [ 54.664300] process_one_work (kernel/workqueue.c:2633) [ 54.664626] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 54.664928] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 54.665280] kthread (kernel/kthread.c:388) [ 54.665533] ? __pfx_kthread (kernel/kthread.c:341) [ 54.665837] ret_from_fork (arch/x86/kernel/process.c:147) [ 54.666131] ? __pfx_kthread (kernel/kthread.c:341) [ 54.666442] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 64.372533] ------------[ cut here ]------------ | [ 64.372827] sysfs group 'bridge' not found for kobject 'br0' | [ 64.373215] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 64.373666] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 64.374926] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 64.375582] Workqueue: netns cleanup_net [ 64.375838] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.376120] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 64.377150] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 64.377475] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 64.377918] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 64.378327] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 64.378715] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c942b10610 [ 64.379123] R13: ffff97c500063e08 R14: ffff88c942b10b80 R15: ffff88c943d94550 [ 64.379578] FS: 0000000000000000(0000) GS:ffff88c97ec00000(0000) knlGS:0000000000000000 [ 64.380036] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.380400] CR2: 00007f7051c68000 CR3: 0000000038e60002 CR4: 0000000000770ef0 [ 64.380767] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.381184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.381638] PKRU: 55555554 [ 64.381835] Call Trace: [ 64.382031] <TASK> [ 64.382233] ? __warn (kernel/panic.c:677) [ 64.382457] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.382715] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 64.382977] ? handle_bug (arch/x86/kernel/traps.c:238) [ 64.383209] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 64.383441] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 64.383724] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.384032] br_dev_delete (net/bridge/br_if.c:396) [ 64.384278] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 64.384534] cleanup_net (net/core/net_namespace.c:630) [ 64.384774] ? process_one_work (kernel/workqueue.c:2606) [ 64.385051] process_one_work (kernel/workqueue.c:2633) [ 64.385323] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 64.385541] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 64.385809] kthread (kernel/kthread.c:388) [ 64.386032] ? __pfx_kthread (kernel/kthread.c:341) [ 64.386278] ret_from_fork (arch/x86/kernel/process.c:147) [ 64.386509] ? __pfx_kthread (kernel/kthread.c:341) [ 64.386756] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 64.495487] ------------[ cut here ]------------ | [ 64.495984] sysfs group 'bridge' not found for kobject 'br0' | [ 64.496507] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 64.496979] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 64.498505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 64.499394] Workqueue: netns cleanup_net [ 64.499817] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.500309] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 64.501911] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 64.502412] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 64.503171] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 64.503826] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 64.504629] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c9422fc610 [ 64.505494] R13: ffff97c500063e08 R14: ffff88c9422fcb80 R15: ffff88c943d94550 [ 64.506310] FS: 0000000000000000(0000) GS:ffff88c97ed00000(0000) knlGS:0000000000000000 [ 64.507419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.508156] CR2: 00007faca47d6270 CR3: 0000000038e60002 CR4: 0000000000770ef0 [ 64.509098] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.510045] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.510723] PKRU: 55555554 [ 64.510922] Call Trace: [ 64.511124] <TASK> [ 64.511351] ? __warn (kernel/panic.c:677) [ 64.511605] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.511902] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 64.512268] ? handle_bug (arch/x86/kernel/traps.c:238) [ 64.512569] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 64.512956] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 64.513215] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.513518] br_dev_delete (net/bridge/br_if.c:396) [ 64.513825] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 64.514256] cleanup_net (net/core/net_namespace.c:630) [ 64.514778] ? process_one_work (kernel/workqueue.c:2606) [ 64.515260] process_one_work (kernel/workqueue.c:2633) [ 64.515769] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 64.516226] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 64.516698] kthread (kernel/kthread.c:388) [ 64.517118] ? __pfx_kthread (kernel/kthread.c:341) [ 64.517533] ret_from_fork (arch/x86/kernel/process.c:147) [ 64.517957] ? __pfx_kthread (kernel/kthread.c:341) [ 64.518469] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 67.900530] ------------[ cut here ]------------ | [ 67.900861] sysfs group 'bridge' not found for kobject 'br0' | [ 67.901242] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 67.901670] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 67.903641] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 67.905219] Workqueue: netns cleanup_net [ 67.905824] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 67.906540] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 67.909332] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 67.910003] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 67.910947] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 67.911762] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 67.912400] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c942b14610 [ 67.913034] R13: ffff97c500063e08 R14: ffff88c942b14b80 R15: ffff88c943d92e50 [ 67.913577] FS: 0000000000000000(0000) GS:ffff88c97ec80000(0000) knlGS:0000000000000000 [ 67.914025] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.914411] CR2: 0000559ef6d01c90 CR3: 0000000038e60001 CR4: 0000000000770ef0 [ 67.914943] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.915429] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.916057] PKRU: 55555554 [ 67.916328] Call Trace: [ 67.916546] <TASK> [ 67.916762] ? __warn (kernel/panic.c:677) [ 67.917041] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 67.917436] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 67.917774] ? handle_bug (arch/x86/kernel/traps.c:238) [ 67.918087] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 67.918433] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 67.918802] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 67.919163] br_dev_delete (net/bridge/br_if.c:396) [ 67.919488] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 67.919868] cleanup_net (net/core/net_namespace.c:630) [ 67.920177] ? process_one_work (kernel/workqueue.c:2606) [ 67.920555] process_one_work (kernel/workqueue.c:2633) [ 67.920890] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 67.921221] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 67.921604] kthread (kernel/kthread.c:388) [ 67.921890] ? __pfx_kthread (kernel/kthread.c:341) [ 67.922329] ret_from_fork (arch/x86/kernel/process.c:147) [ 67.922726] ? __pfx_kthread (kernel/kthread.c:341) [ 67.923172] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 68.022534] ------------[ cut here ]------------ | [ 68.022912] sysfs group 'bridge' not found for kobject 'br0' | [ 68.023386] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 68.023997] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 68.025776] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 68.026645] Workqueue: netns cleanup_net [ 68.026951] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 68.027316] 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 12 ae 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 12 ae mov $0xffffffffae12cda0,%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) ... [ 68.028402] RSP: 0018:ffff97c500063d70 EFLAGS: 00010286 [ 68.028692] RAX: 0000000000000000 RBX: ffffffffadd472c0 RCX: 00000000ffffdfff [ 68.029051] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 68.029419] RBP: 0000000000000000 R08: ffffffffae578508 R09: 00000000ffffdfff [ 68.029792] R10: ffffffffae498520 R11: ffffffffae548520 R12: ffff88c941d62610 [ 68.030151] R13: ffff97c500063e08 R14: ffff88c941d62b80 R15: ffffffffafa78f90 [ 68.030517] FS: 0000000000000000(0000) GS:ffff88c97ec80000(0000) knlGS:0000000000000000 [ 68.030931] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.031227] CR2: 000055929f450f00 CR3: 0000000003d34005 CR4: 0000000000770ef0 [ 68.031603] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.031965] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.032332] PKRU: 55555554 [ 68.032480] Call Trace: [ 68.032619] <TASK> [ 68.032739] ? __warn (kernel/panic.c:677) [ 68.032911] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 68.033132] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 68.033336] ? handle_bug (arch/x86/kernel/traps.c:238) [ 68.033523] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 68.033747] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 68.033970] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 68.034188] br_dev_delete (net/bridge/br_if.c:396) [ 68.034385] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 68.034624] cleanup_net (net/core/net_namespace.c:630) [ 68.034816] ? process_one_work (kernel/workqueue.c:2606) [ 68.035032] process_one_work (kernel/workqueue.c:2633) [ 68.035255] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 68.035455] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 68.035683] kthread (kernel/kthread.c:388) [ 68.035854] ? __pfx_kthread (kernel/kthread.c:341) [ 68.036051] ret_from_fork (arch/x86/kernel/process.c:147) [ 68.036242] ? __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