====================================== | [ 26.027173] ------------[ cut here ]------------ | [ 26.027801] refcount_t: underflow; use-after-free. | [ 26.028519] WARNING: CPU: 1 PID: 68 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 26.029619] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 26.031091] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.031842] Workqueue: netns cleanup_net [ 26.032171] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 26.032708] Code: 0b 90 90 c3 cc cc cc cc 80 3d 69 d4 67 01 00 0f 85 75 ff ff ff c6 05 5c d4 67 01 01 90 48 c7 c7 e8 37 d3 8e e8 a1 26 b4 ff 90 <0f> 0b 90 90 c3 cc cc cc cc 80 3d 3c d4 67 01 00 0f 85 4a ff ff ff All code ======== 0: 0b 90 90 c3 cc cc or -0x33333c70(%rax),%edx 6: cc int3 7: cc int3 8: 80 3d 69 d4 67 01 00 cmpb $0x0,0x167d469(%rip) # 0x167d478 f: 0f 85 75 ff ff ff jne 0xffffffffffffff8a 15: c6 05 5c d4 67 01 01 movb $0x1,0x167d45c(%rip) # 0x167d478 1c: 90 nop 1d: 48 c7 c7 e8 37 d3 8e mov $0xffffffff8ed337e8,%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 [ 26.034075] RSP: 0018:ffff9f5cc0263d78 EFLAGS: 00010286 [ 26.034541] RAX: 0000000000000000 RBX: ffff8ee742690000 RCX: 00000000ffffdfff [ 26.035120] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 26.035799] RBP: ffff8ee742690610 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 26.036414] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee742690000 [ 26.037072] R13: ffff9f5cc0263e08 R14: ffff8ee742690b80 R15: ffffffff90678f90 [ 26.037662] FS: 0000000000000000(0000) GS:ffff8ee77ec80000(0000) knlGS:0000000000000000 [ 26.038314] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.038722] CR2: 00007f0246ec6270 CR3: 0000000016c60003 CR4: 0000000000770ef0 [ 26.039307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.039901] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.040502] PKRU: 55555554 [ 26.040766] Call Trace: [ 26.040988] [ 26.041256] ? __warn (kernel/panic.c:677) [ 26.041534] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 26.041951] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 26.042304] ? handle_bug (arch/x86/kernel/traps.c:238) [ 26.042752] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 26.043132] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 26.043584] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 26.044111] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 26.044548] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 26.044952] br_dev_delete (net/bridge/br_if.c:396) [ 26.045205] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 26.045545] cleanup_net (net/core/net_namespace.c:630) [ 26.045855] ? process_one_work (kernel/workqueue.c:2606) [ 26.046244] process_one_work (kernel/workqueue.c:2633) [ 26.046562] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 26.046798] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 26.047107] kthread (kernel/kthread.c:388) [ 26.047426] ? __pfx_kthread (kernel/kthread.c:341) [ 26.047909] ret_from_fork (arch/x86/kernel/process.c:147) [ 26.048180] ? __pfx_kthread (kernel/kthread.c:341) [ 26.048591] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 26.054254] ------------[ cut here ]------------ | [ 26.054532] sysfs group 'bridge' not found for kobject 'br0' | [ 26.054914] WARNING: CPU: 0 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 26.055342] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 26.056313] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.056974] Workqueue: netns cleanup_net [ 26.057231] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 26.057503] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 26.058521] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 26.058871] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 26.059287] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 26.059671] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 26.060084] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee742690610 [ 26.060503] R13: ffff9f5cc0263e08 R14: ffff8ee742690b80 R15: ffffffff90678f90 [ 26.060925] FS: 0000000000000000(0000) GS:ffff8ee77ec00000(0000) knlGS:0000000000000000 [ 26.061354] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.061676] CR2: 000056108da30dec CR3: 000000000265a001 CR4: 0000000000770ef0 [ 26.062094] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.062503] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.062896] PKRU: 55555554 [ 26.063073] Call Trace: [ 26.063265] [ 26.063424] ? __warn (kernel/panic.c:677) [ 26.063642] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 26.063925] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 26.064157] ? handle_bug (arch/x86/kernel/traps.c:238) [ 26.064386] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 26.064614] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 26.064866] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 26.065118] br_dev_delete (net/bridge/br_if.c:396) [ 26.065351] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 26.065639] cleanup_net (net/core/net_namespace.c:630) [ 26.065869] ? process_one_work (kernel/workqueue.c:2606) [ 26.066108] process_one_work (kernel/workqueue.c:2633) [ 26.066366] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 26.066594] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 26.066873] kthread (kernel/kthread.c:388) [ 26.067079] ? __pfx_kthread (kernel/kthread.c:341) [ 26.067300] ret_from_fork (arch/x86/kernel/process.c:147) [ 26.067549] ? __pfx_kthread (kernel/kthread.c:341) [ 26.067771] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 26.070687] ------------[ cut here ]------------ | [ 26.070980] sysfs group 'bridge' not found for kobject 'br0' | [ 26.071325] WARNING: CPU: 0 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 26.071800] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 26.072749] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.073379] Workqueue: netns cleanup_net [ 26.073622] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 26.073926] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 26.074916] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 26.075211] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 26.075628] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 26.076063] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 26.076460] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee743b32610 [ 26.076858] R13: ffff9f5cc0263e08 R14: ffff8ee743b32b80 R15: ffffffff90678f90 [ 26.077253] FS: 0000000000000000(0000) GS:ffff8ee77ec00000(0000) knlGS:0000000000000000 [ 26.077703] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.078051] CR2: 000056108da30dec CR3: 000000000265a001 CR4: 0000000000770ef0 [ 26.078472] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.078875] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.079274] PKRU: 55555554 [ 26.079481] Call Trace: [ 26.079625] [ 26.079769] ? __warn (kernel/panic.c:677) [ 26.079978] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 26.080240] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 26.080461] ? handle_bug (arch/x86/kernel/traps.c:238) [ 26.080670] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 26.080922] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 26.081171] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 26.081419] br_dev_delete (net/bridge/br_if.c:396) [ 26.081639] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 26.081887] cleanup_net (net/core/net_namespace.c:630) [ 26.082106] ? process_one_work (kernel/workqueue.c:2606) [ 26.082349] process_one_work (kernel/workqueue.c:2633) [ 26.082610] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 26.082837] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 26.083081] kthread (kernel/kthread.c:388) [ 26.083288] ? __pfx_kthread (kernel/kthread.c:341) [ 26.083512] ret_from_fork (arch/x86/kernel/process.c:147) [ 26.083706] ? __pfx_kthread (kernel/kthread.c:341) [ 26.083940] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.821214] ------------[ cut here ]------------ | [ 45.821695] sysfs group 'bridge' not found for kobject 'br0' | [ 45.822234] WARNING: CPU: 3 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 45.822853] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 45.824427] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.825356] Workqueue: netns cleanup_net [ 45.825707] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.826094] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 45.827580] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 45.828033] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 45.828456] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 45.828983] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 45.829572] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee743b30610 [ 45.830018] R13: ffff9f5cc0263e08 R14: ffff8ee743b30b80 R15: ffff8ee743868050 [ 45.830529] FS: 0000000000000000(0000) GS:ffff8ee77ed80000(0000) knlGS:0000000000000000 [ 45.831283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.831758] CR2: 00007ffba03a9000 CR3: 0000000016c60001 CR4: 0000000000770ef0 [ 45.832664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.833636] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.834504] PKRU: 55555554 [ 45.834873] Call Trace: [ 45.835247] [ 45.835523] ? __warn (kernel/panic.c:677) [ 45.835949] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.836458] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.836857] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.837219] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.837672] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.838244] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.838663] br_dev_delete (net/bridge/br_if.c:396) [ 45.839019] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 45.839459] cleanup_net (net/core/net_namespace.c:630) [ 45.839788] ? process_one_work (kernel/workqueue.c:2606) [ 45.840162] process_one_work (kernel/workqueue.c:2633) [ 45.840571] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.840978] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.841280] kthread (kernel/kthread.c:388) [ 45.841617] ? __pfx_kthread (kernel/kthread.c:341) [ 45.842014] ret_from_fork (arch/x86/kernel/process.c:147) [ 45.842356] ? __pfx_kthread (kernel/kthread.c:341) [ 45.842748] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.947049] ------------[ cut here ]------------ | [ 45.947329] sysfs group 'bridge' not found for kobject 'br0' | [ 45.947661] WARNING: CPU: 0 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 45.948096] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 45.949207] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.949802] Workqueue: netns cleanup_net [ 45.950041] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.950333] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 45.951296] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 45.951602] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 45.951999] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 45.952372] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 45.952760] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee742692610 [ 45.953155] R13: ffff9f5cc0263e08 R14: ffff8ee742692b80 R15: ffff8ee7429f0050 [ 45.953539] FS: 0000000000000000(0000) GS:ffff8ee77ec00000(0000) knlGS:0000000000000000 [ 45.953964] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.954283] CR2: 00007fa437ec6000 CR3: 0000000016c60003 CR4: 0000000000770ef0 [ 45.954675] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.955068] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.955442] PKRU: 55555554 [ 45.955617] Call Trace: [ 45.955795] [ 45.955938] ? __warn (kernel/panic.c:677) [ 45.956124] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.956368] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.956598] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.956818] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.957031] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.957291] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.957544] br_dev_delete (net/bridge/br_if.c:396) [ 45.957761] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 45.958010] cleanup_net (net/core/net_namespace.c:630) [ 45.958243] ? process_one_work (kernel/workqueue.c:2606) [ 45.958512] process_one_work (kernel/workqueue.c:2633) [ 45.958750] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.958969] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.959227] kthread (kernel/kthread.c:388) [ 45.959433] ? __pfx_kthread (kernel/kthread.c:341) [ 45.959656] ret_from_fork (arch/x86/kernel/process.c:147) [ 45.959866] ? __pfx_kthread (kernel/kthread.c:341) [ 45.960096] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 55.182077] ------------[ cut here ]------------ | [ 55.182357] sysfs group 'bridge' not found for kobject 'br0' | [ 55.182711] WARNING: CPU: 0 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 55.183152] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 55.184122] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 55.184754] Workqueue: netns cleanup_net [ 55.185018] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 55.185288] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 55.186293] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 55.186609] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 55.187015] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 55.187395] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 55.187801] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee743b7c610 [ 55.188234] R13: ffff9f5cc0263e08 R14: ffff8ee743b7cb80 R15: ffff8ee7451ddc50 [ 55.188635] FS: 0000000000000000(0000) GS:ffff8ee77ec00000(0000) knlGS:0000000000000000 [ 55.189071] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.189400] CR2: 00007fff01b24c38 CR3: 0000000016c60004 CR4: 0000000000770ef0 [ 55.189845] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.190252] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.190647] PKRU: 55555554 [ 55.190836] Call Trace: [ 55.191028] [ 55.191193] ? __warn (kernel/panic.c:677) [ 55.191385] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 55.191643] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 55.191895] ? handle_bug (arch/x86/kernel/traps.c:238) [ 55.192123] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 55.192343] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 55.192615] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 55.192893] br_dev_delete (net/bridge/br_if.c:396) [ 55.193136] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 55.193395] cleanup_net (net/core/net_namespace.c:630) [ 55.193656] ? process_one_work (kernel/workqueue.c:2606) [ 55.193931] process_one_work (kernel/workqueue.c:2633) [ 55.194275] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 55.194600] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 55.194886] kthread (kernel/kthread.c:388) [ 55.195095] ? __pfx_kthread (kernel/kthread.c:341) [ 55.195329] ret_from_fork (arch/x86/kernel/process.c:147) [ 55.195555] ? __pfx_kthread (kernel/kthread.c:341) [ 55.195780] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 55.303072] ------------[ cut here ]------------ | [ 55.303382] sysfs group 'bridge' not found for kobject 'br0' | [ 55.303759] WARNING: CPU: 0 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 55.304232] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 55.305256] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 55.305884] Workqueue: netns cleanup_net [ 55.306135] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 55.306415] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 55.307381] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 55.307692] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 55.308105] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 55.308530] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 55.308903] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee743b7e610 [ 55.309279] R13: ffff9f5cc0263e08 R14: ffff8ee743b7eb80 R15: ffff8ee7429f2e50 [ 55.309638] FS: 0000000000000000(0000) GS:ffff8ee77ec00000(0000) knlGS:0000000000000000 [ 55.310115] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.310450] CR2: 00007fff01b24c38 CR3: 0000000016c60004 CR4: 0000000000770ef0 [ 55.310860] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.311267] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.311681] PKRU: 55555554 [ 55.311894] Call Trace: [ 55.312065] [ 55.312232] ? __warn (kernel/panic.c:677) [ 55.312439] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 55.312678] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 55.312939] ? handle_bug (arch/x86/kernel/traps.c:238) [ 55.313170] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 55.313411] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 55.313674] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 55.313927] br_dev_delete (net/bridge/br_if.c:396) [ 55.314158] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 55.314442] cleanup_net (net/core/net_namespace.c:630) [ 55.314671] ? process_one_work (kernel/workqueue.c:2606) [ 55.314925] process_one_work (kernel/workqueue.c:2633) [ 55.315200] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 55.315437] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 55.315726] kthread (kernel/kthread.c:388) [ 55.315941] ? __pfx_kthread (kernel/kthread.c:341) [ 55.316173] ret_from_fork (arch/x86/kernel/process.c:147) [ 55.316409] ? __pfx_kthread (kernel/kthread.c:341) [ 55.316656] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 64.698203] ------------[ cut here ]------------ | [ 64.698886] sysfs group 'bridge' not found for kobject 'br0' | [ 64.699580] WARNING: CPU: 2 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 64.700655] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 64.703016] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 64.704165] Workqueue: netns cleanup_net [ 64.704427] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.704769] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 64.705751] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 64.706114] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 64.706675] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 64.707468] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 64.707987] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee743b14610 [ 64.708660] R13: ffff9f5cc0263e08 R14: ffff8ee743b14b80 R15: ffffffff90678f90 [ 64.709524] FS: 0000000000000000(0000) GS:ffff8ee77ed00000(0000) knlGS:0000000000000000 [ 64.710571] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.711334] CR2: 00007f494187f000 CR3: 0000000016c60003 CR4: 0000000000770ef0 [ 64.712268] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.713099] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.713823] PKRU: 55555554 [ 64.714080] Call Trace: [ 64.714304] [ 64.714502] ? __warn (kernel/panic.c:677) [ 64.714876] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.715477] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 64.715909] ? handle_bug (arch/x86/kernel/traps.c:238) [ 64.716321] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 64.716669] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 64.717081] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.717572] br_dev_delete (net/bridge/br_if.c:396) [ 64.717867] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 64.718253] cleanup_net (net/core/net_namespace.c:630) [ 64.718621] ? process_one_work (kernel/workqueue.c:2606) [ 64.718955] process_one_work (kernel/workqueue.c:2633) [ 64.719315] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 64.719727] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 64.720171] kthread (kernel/kthread.c:388) [ 64.720417] ? __pfx_kthread (kernel/kthread.c:341) [ 64.720781] ret_from_fork (arch/x86/kernel/process.c:147) [ 64.721095] ? __pfx_kthread (kernel/kthread.c:341) [ 64.721369] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 64.725766] ------------[ cut here ]------------ | [ 64.726240] sysfs group 'bridge' not found for kobject 'br0' | [ 64.726943] WARNING: CPU: 2 PID: 68 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 64.727630] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 64.730066] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 64.731731] Workqueue: netns cleanup_net [ 64.732324] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.733099] Code: 48 89 ef 5d 41 5c e9 7a ad ff ff 48 89 ef e8 12 9b ff ff eb d1 90 49 8b 14 24 48 8b 33 48 c7 c7 d0 cd d2 8e e8 ac 67 c5 ff 90 <0f> 0b 90 90 5b 5d 41 5c c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 All code ======== 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: 41 5c pop %r12 6: e9 7a ad ff ff jmp 0xffffffffffffad85 b: 48 89 ef mov %rbp,%rdi e: e8 12 9b ff ff call 0xffffffffffff9b25 13: eb d1 jmp 0xffffffffffffffe6 15: 90 nop 16: 49 8b 14 24 mov (%r12),%rdx 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 d0 cd d2 8e mov $0xffffffff8ed2cdd0,%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) ... [ 64.735824] RSP: 0018:ffff9f5cc0263d70 EFLAGS: 00010286 [ 64.736532] RAX: 0000000000000000 RBX: ffffffff8e9472c0 RCX: 00000000ffffdfff [ 64.737582] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 64.738529] RBP: 0000000000000000 R08: ffffffff8f178508 R09: 00000000ffffdfff [ 64.739591] R10: ffffffff8f098520 R11: ffffffff8f148520 R12: ffff8ee743b78610 [ 64.740200] R13: ffff9f5cc0263e08 R14: ffff8ee743b78b80 R15: ffffffff90678f90 [ 64.740937] FS: 0000000000000000(0000) GS:ffff8ee77ed00000(0000) knlGS:0000000000000000 [ 64.741630] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.742088] CR2: 00007f494187f000 CR3: 0000000016c60003 CR4: 0000000000770ef0 [ 64.743005] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.743853] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.744619] PKRU: 55555554 [ 64.745033] Call Trace: [ 64.745279] [ 64.745457] ? __warn (kernel/panic.c:677) [ 64.745843] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.746383] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 64.746956] ? handle_bug (arch/x86/kernel/traps.c:238) [ 64.747461] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 64.748039] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 64.748869] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 64.749455] br_dev_delete (net/bridge/br_if.c:396) [ 64.749991] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 64.750644] cleanup_net (net/core/net_namespace.c:630) [ 64.751181] ? process_one_work (kernel/workqueue.c:2606) [ 64.751805] process_one_work (kernel/workqueue.c:2633) [ 64.752417] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 64.752963] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 64.753605] kthread (kernel/kthread.c:388) [ 64.754063] ? __pfx_kthread (kernel/kthread.c:341) [ 64.754365] ret_from_fork (arch/x86/kernel/process.c:147) [ 64.754673] ? __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