====================================== | [ 35.983408][ T69] ================================================================== | [ 35.983852][ T69] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 35.984304][ T69] Read of size 1 at addr ffff8880052fccfc by task kworker/u8:1/69 | [ 35.984734][ T69] [ 35.985329][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 35.985973][ T69] Workqueue: netns cleanup_net [ 35.986261][ T69] Call Trace: [ 35.986472][ T69] [ 35.986652][ T69] dump_stack_lvl (lib/dump_stack.c:107) [ 35.986912][ T69] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 35.987287][ T69] ? kobject_put (lib/kobject.c:729) [ 35.987555][ T69] print_report (mm/kasan/report.c:489) [ 35.987817][ T69] ? kasan_addr_to_slab (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/page-flags.h:481 mm/kasan/../slab.h:206 mm/kasan/common.c:38) [ 35.988091][ T69] kasan_report (mm/kasan/report.c:603) [ 35.988349][ T69] ? kobject_put (lib/kobject.c:729) [ 35.988596][ T69] kobject_put (lib/kobject.c:729) [ 35.988845][ T69] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 35.989088][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 35.989337][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 35.989614][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 35.989852][ T69] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 35.990148][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 35.990413][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 35.990660][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 35.990930][ T69] process_one_work (kernel/workqueue.c:2638) [ 35.991197][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 35.991436][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 35.991718][ T69] ? assign_work (kernel/workqueue.c:1101) [ 35.991960][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 35.992231][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 35.992597][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 35.992897][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 35.993203][ T69] kthread (kernel/kthread.c:388) [ 35.993438][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 35.993701][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 35.993964][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 35.994226][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 36.014382][ T69] ------------[ cut here ]------------ | [ 36.014683][ T69] refcount_t: underflow; use-after-free. | [ 36.015059][ T69] WARNING: CPU: 2 PID: 69 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 36.015544][ T69] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 36.016572][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 36.017252][ T69] Workqueue: netns cleanup_net [ 36.017540][ T69] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 36.017881][ T69] Code: f9 82 03 80 fb 01 0f 87 ee 02 b1 01 83 e3 01 0f 85 4d ff ff ff c6 05 9a f9 82 03 01 90 48 c7 c7 20 7a 82 ae e8 3e 05 2a ff 90 <0f> 0b 90 90 e9 2f ff ff ff 48 89 df e8 8c 68 a6 ff e9 b6 fe ff ff All code ======== 0: f9 stc 1: 82 (bad) 2: 03 80 fb 01 0f 87 add -0x78f0fe05(%rax),%eax 8: ee out %al,(%dx) 9: 02 b1 01 83 e3 01 add 0x1e38301(%rcx),%dh f: 0f 85 4d ff ff ff jne 0xffffffffffffff62 15: c6 05 9a f9 82 03 01 movb $0x1,0x382f99a(%rip) # 0x382f9b6 1c: 90 nop 1d: 48 c7 c7 20 7a 82 ae mov $0xffffffffae827a20,%rdi 24: e8 3e 05 2a ff call 0xffffffffff2a0567 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: e9 2f ff ff ff jmp 0xffffffffffffff62 33: 48 89 df mov %rbx,%rdi 36: e8 8c 68 a6 ff call 0xffffffffffa668c7 3b: e9 b6 fe ff ff jmp 0xfffffffffffffef6 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: e9 2f ff ff ff jmp 0xffffffffffffff38 9: 48 89 df mov %rbx,%rdi c: e8 8c 68 a6 ff call 0xffffffffffa6689d 11: e9 b6 fe ff ff jmp 0xfffffffffffffecc [ 36.018969][ T69] RSP: 0018:ffffc900004ffb98 EFLAGS: 00010282 [ 36.019313][ T69] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffabb1056f [ 36.019746][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 36.020209][ T69] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff5200009ff18 [ 36.020691][ T69] R10: ffffc900004ff8c7 R11: 205d393654202020 R12: ffff8880060da000 [ 36.021142][ T69] R13: ffff8880060dadf8 R14: ffffc900004ffc98 R15: ffff8880060dabc0 [ 36.021559][ T69] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 36.022028][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.022386][ T69] CR2: 00007ffd72afd628 CR3: 0000000007a9a004 CR4: 00000000001706f0 [ 36.022799][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.023220][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.023707][ T69] Call Trace: [ 36.023904][ T69] [ 36.024071][ T69] ? __warn (kernel/panic.c:677) [ 36.024328][ T69] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 36.024617][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 36.024856][ T69] ? vprintk_emit (kernel/printk/printk.c:2313) [ 36.025112][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 36.025341][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 36.025636][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 36.025937][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 36.026278][ T69] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 36.026572][ T69] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 36.026865][ T69] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 36.027116][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 36.027364][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 36.027645][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 36.027882][ T69] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 36.028188][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 36.028452][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 36.028699][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 36.028969][ T69] process_one_work (kernel/workqueue.c:2638) [ 36.029288][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.029601][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 36.029886][ T69] ? assign_work (kernel/workqueue.c:1101) [ 36.030164][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 36.030465][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 36.030845][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 36.031158][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 36.031464][ T69] kthread (kernel/kthread.c:388) [ 36.031719][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 36.032028][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 36.032310][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 36.032579][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 36.035614][ T69] ------------[ cut here ]------------ | [ 36.035902][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 36.036283][ T69] WARNING: CPU: 2 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 36.036766][ T69] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 36.037864][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 36.038617][ T69] Workqueue: netns cleanup_net [ 36.038873][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 36.039231][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 36.040432][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 36.040782][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 36.041296][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 36.041786][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 36.042265][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff8880060da628 [ 36.042752][ T69] R13: ffff8880060dadf8 R14: ffffc900004ffc98 R15: ffff8880060dabc0 [ 36.043254][ T69] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 36.043786][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.044182][ T69] CR2: 00007ffd72afd628 CR3: 0000000012f34003 CR4: 00000000001706f0 [ 36.044685][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.045160][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.045642][ T69] Call Trace: [ 36.045832][ T69] [ 36.046024][ T69] ? __warn (kernel/panic.c:677) [ 36.046293][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 36.046569][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 36.046872][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 36.047231][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 36.047464][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 36.047741][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 36.048007][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 36.048247][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 36.048525][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 36.048772][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 36.049057][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 36.049297][ T69] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 36.049593][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 36.049878][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 36.050199][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 36.050500][ T69] process_one_work (kernel/workqueue.c:2638) [ 36.050784][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.051075][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 36.051397][ T69] ? assign_work (kernel/workqueue.c:1101) [ 36.051653][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 36.051980][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 36.052382][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 36.052676][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 36.052997][ T69] kthread (kernel/kthread.c:388) [ 36.053227][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 36.053481][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 36.053777][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 36.054075][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 36.203186][ T69] ------------[ cut here ]------------ | [ 36.203551][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 36.203970][ T69] WARNING: CPU: 3 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 36.204570][ T69] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 36.205735][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 36.206509][ T69] Workqueue: netns cleanup_net [ 36.206800][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 36.207168][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 36.208337][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 36.208680][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 36.209109][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 36.209526][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 36.209941][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff888007b9a628 [ 36.210395][ T69] R13: ffff888007b9adf8 R14: ffffc900004ffc98 R15: ffff888007b9abc0 [ 36.210851][ T69] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 36.211389][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.211767][ T69] CR2: 00007f45c0a44000 CR3: 0000000012f34004 CR4: 00000000001706f0 [ 36.212278][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.212772][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.213241][ T69] Call Trace: [ 36.213435][ T69] [ 36.213599][ T69] ? __warn (kernel/panic.c:677) [ 36.213845][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 36.214164][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 36.214441][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 36.214703][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 36.214933][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 36.215186][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 36.215454][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 36.215691][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 36.215969][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 36.216225][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 36.216534][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 36.216813][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 36.217088][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 36.217351][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 36.217600][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 36.217877][ T69] process_one_work (kernel/workqueue.c:2638) [ 36.218148][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.218394][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 36.218684][ T69] ? assign_work (kernel/workqueue.c:1101) [ 36.218934][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 36.219190][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 36.219538][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 36.219820][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 36.220143][ T69] kthread (kernel/kthread.c:388) [ 36.220372][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 36.220631][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 36.220881][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 36.221156][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 53.896377][ T69] ------------[ cut here ]------------ | [ 53.896711][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 53.897134][ T69] WARNING: CPU: 2 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 53.897675][ T69] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 53.898811][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 53.899482][ T69] Workqueue: netns cleanup_net [ 53.899741][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 53.900089][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 53.901236][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 53.901599][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 53.902036][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 53.902470][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 53.902884][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff8880020e2628 [ 53.903312][ T69] R13: ffff8880020e2df8 R14: ffffc900004ffc98 R15: ffff8880020e2bc0 [ 53.903765][ T69] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 53.904326][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.904707][ T69] CR2: 00007f96dc2a8a30 CR3: 0000000012f34002 CR4: 00000000001706f0 [ 53.905176][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.905627][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.906102][ T69] Call Trace: [ 53.906304][ T69] [ 53.906490][ T69] ? __warn (kernel/panic.c:677) [ 53.906726][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 53.907014][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 53.907340][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 53.907613][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 53.907872][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 53.908161][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 53.908469][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 53.908737][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 53.909054][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 53.909337][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 53.909655][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 53.909916][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 53.910198][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 53.910487][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 53.910769][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 53.911073][ T69] process_one_work (kernel/workqueue.c:2638) [ 53.911349][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 53.911592][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 53.911897][ T69] ? assign_work (kernel/workqueue.c:1101) [ 53.912173][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 53.912427][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 53.912774][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 53.913054][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 53.913365][ T69] kthread (kernel/kthread.c:388) [ 53.913616][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 53.913906][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 53.914147][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 53.914400][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 54.089395][ T69] ------------[ cut here ]------------ | [ 54.089737][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 54.090127][ T69] WARNING: CPU: 0 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 54.090621][ T69] Modules linked in: act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 54.091771][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 54.092479][ T69] Workqueue: netns cleanup_net [ 54.092785][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.093134][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 54.094222][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 54.094595][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 54.095065][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 54.095507][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 54.096007][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff88800931a628 [ 54.096498][ T69] R13: ffff88800931adf8 R14: ffffc900004ffc98 R15: ffff88800931abc0 [ 54.096972][ T69] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 54.097478][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.097888][ T69] CR2: 00007fd1ab76c270 CR3: 0000000012f34005 CR4: 00000000001706f0 [ 54.098365][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.098829][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.099280][ T69] Call Trace: [ 54.099476][ T69] [ 54.099667][ T69] ? __warn (kernel/panic.c:677) [ 54.099911][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 54.100205][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.100524][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 54.100828][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 54.101123][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 54.101428][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 54.101754][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 54.102079][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 54.102403][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 54.102707][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 54.103062][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 54.103330][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 54.103642][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 54.103962][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 54.104257][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 54.104558][ T69] process_one_work (kernel/workqueue.c:2638) [ 54.104868][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 54.105169][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 54.105499][ T69] ? assign_work (kernel/workqueue.c:1101) [ 54.105809][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 54.106113][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 54.106519][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 54.106828][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 54.107139][ T69] kthread (kernel/kthread.c:388) [ 54.107402][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 54.107703][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 54.107986][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 54.108246][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 70.222056][ T69] ------------[ cut here ]------------ | [ 70.222533][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 70.223130][ T69] WARNING: CPU: 2 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 70.223926][ T69] Modules linked in: cls_matchall act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 70.225528][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 70.226523][ T69] Workqueue: netns cleanup_net [ 70.226964][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.227478][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 70.229096][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 70.229435][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 70.229909][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 70.230586][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 70.231227][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff88800918a628 [ 70.231854][ T69] R13: ffff88800918adf8 R14: ffffc900004ffc98 R15: ffff88800918abc0 [ 70.232499][ T69] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 70.233326][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.233893][ T69] CR2: 00007fe56c84ad40 CR3: 000000000768e003 CR4: 00000000001706f0 [ 70.234584][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.235287][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.235985][ T69] Call Trace: [ 70.236198][ T69] [ 70.236364][ T69] ? __warn (kernel/panic.c:677) [ 70.236607][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 70.236909][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.237205][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 70.237493][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 70.237736][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 70.238027][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 70.238321][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 70.238594][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.238894][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 70.239262][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 70.239542][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 70.239780][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 70.240039][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 70.240310][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 70.240558][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 70.240872][ T69] process_one_work (kernel/workqueue.c:2638) [ 70.241160][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 70.241412][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 70.241691][ T69] ? assign_work (kernel/workqueue.c:1101) [ 70.241956][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 70.242213][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 70.242554][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 70.242824][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 70.243107][ T69] kthread (kernel/kthread.c:388) [ 70.243327][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 70.243570][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 70.243807][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 70.244112][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 70.401738][ T69] ------------[ cut here ]------------ | [ 70.402065][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 70.402437][ T69] WARNING: CPU: 1 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 70.402918][ T69] Modules linked in: cls_matchall act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 70.403995][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 70.404664][ T69] Workqueue: netns cleanup_net [ 70.404926][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.405259][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 70.406392][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 70.406737][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 70.407205][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 70.407678][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 70.408124][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff88800838a628 [ 70.408607][ T69] R13: ffff88800838adf8 R14: ffffc900004ffc98 R15: ffff88800838abc0 [ 70.409051][ T69] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 70.409566][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.409947][ T69] CR2: 00007ffd72afd628 CR3: 0000000007a9a001 CR4: 00000000001706f0 [ 70.410439][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.410922][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.411395][ T69] Call Trace: [ 70.411591][ T69] [ 70.411774][ T69] ? __warn (kernel/panic.c:677) [ 70.412038][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 70.412327][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.412601][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 70.412840][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 70.413084][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 70.413340][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 70.413607][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 70.413842][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 70.414129][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 70.414394][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 70.414717][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 70.414990][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 70.415256][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 70.415569][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 70.415834][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 70.416143][ T69] process_one_work (kernel/workqueue.c:2638) [ 70.416458][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 70.416710][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 70.417031][ T69] ? assign_work (kernel/workqueue.c:1101) [ 70.417297][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 70.417565][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 70.417967][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 70.418285][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 70.418572][ T69] kthread (kernel/kthread.c:388) [ 70.418831][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 70.419105][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 70.419345][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 70.419595][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 87.191352][ T69] ------------[ cut here ]------------ | [ 87.191713][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 87.192160][ T69] WARNING: CPU: 0 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 87.192690][ T69] Modules linked in: cls_matchall act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 87.193912][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 87.194616][ T69] Workqueue: netns cleanup_net [ 87.194927][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.195271][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 87.196356][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 87.196742][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 87.197201][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 87.197641][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 87.198111][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff888005f82628 [ 87.198574][ T69] R13: ffff888005f82df8 R14: ffffc900004ffc98 R15: ffff888005f82bc0 [ 87.199035][ T69] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 87.199534][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.199937][ T69] CR2: 00007f4d8abbe270 CR3: 0000000012f34004 CR4: 00000000001706f0 [ 87.200411][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.200870][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.201321][ T69] Call Trace: [ 87.201514][ T69] [ 87.201696][ T69] ? __warn (kernel/panic.c:677) [ 87.201966][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 87.202257][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.202560][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 87.202845][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 87.203123][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 87.203429][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 87.203722][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 87.203992][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.204312][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 87.204604][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 87.204902][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 87.205150][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 87.205403][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 87.205665][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 87.205916][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 87.206195][ T69] process_one_work (kernel/workqueue.c:2638) [ 87.206461][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 87.206705][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 87.206992][ T69] ? assign_work (kernel/workqueue.c:1101) [ 87.207242][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 87.207491][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 87.207897][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 87.208214][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 87.208516][ T69] kthread (kernel/kthread.c:388) [ 87.208759][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 87.209036][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 87.209303][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 87.209599][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 87.414053][ T69] ------------[ cut here ]------------ | [ 87.414354][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 87.414729][ T69] WARNING: CPU: 2 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 87.415218][ T69] Modules linked in: cls_matchall act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 87.416310][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 87.417017][ T69] Workqueue: netns cleanup_net [ 87.417296][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.417630][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 87.418754][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 87.419107][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 87.419566][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 87.420017][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 87.420484][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff8880079a2628 [ 87.420936][ T69] R13: ffff8880079a2df8 R14: ffffc900004ffc98 R15: ffff8880079a2bc0 [ 87.421404][ T69] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 87.421931][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.422307][ T69] CR2: 00007efeabdec000 CR3: 0000000012f34002 CR4: 00000000001706f0 [ 87.422787][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.423239][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.423720][ T69] Call Trace: [ 87.423915][ T69] [ 87.424095][ T69] ? __warn (kernel/panic.c:677) [ 87.424341][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 87.424631][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.424905][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 87.425151][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 87.425381][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 87.425630][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 87.425897][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 87.426139][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.426416][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 87.426662][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 87.426940][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 87.427185][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 87.427433][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 87.427696][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 87.427948][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 87.428226][ T69] process_one_work (kernel/workqueue.c:2638) [ 87.428523][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 87.428775][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 87.429086][ T69] ? assign_work (kernel/workqueue.c:1101) [ 87.429333][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 87.429587][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 87.429934][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 87.430210][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 87.430479][ T69] kthread (kernel/kthread.c:388) [ 87.430698][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 87.430941][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 87.431182][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 87.431427][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 127.056125][ T69] ------------[ cut here ]------------ | [ 127.056432][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 127.056805][ T69] WARNING: CPU: 1 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 127.057323][ T69] Modules linked in: cls_matchall act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 127.058506][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 127.059193][ T69] Workqueue: netns cleanup_net [ 127.059450][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 127.059764][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 127.060883][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 127.061232][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 127.061709][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 127.062177][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 127.062647][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff8880061ea628 [ 127.063114][ T69] R13: ffff8880061eadf8 R14: ffffc900004ffc98 R15: ffff8880061eabc0 [ 127.063568][ T69] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 127.064084][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 127.064456][ T69] CR2: 0000564cfde230f0 CR3: 0000000012f34003 CR4: 00000000001706f0 [ 127.064909][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 127.065332][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 127.065751][ T69] Call Trace: [ 127.065930][ T69] [ 127.066097][ T69] ? __warn (kernel/panic.c:677) [ 127.066317][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 127.066576][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 127.066884][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 127.067162][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 127.067418][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 127.067691][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 127.067983][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 127.068341][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 127.068790][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 127.069208][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 127.069636][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 127.070028][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 127.070423][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 127.070860][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 127.071266][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 127.071732][ T69] process_one_work (kernel/workqueue.c:2638) [ 127.072154][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 127.072549][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 127.072976][ T69] ? assign_work (kernel/workqueue.c:1101) [ 127.073342][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 127.073706][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 127.074089][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 127.074360][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 127.074629][ T69] kthread (kernel/kthread.c:388) [ 127.074856][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 127.075180][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 127.075434][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 127.075693][ T69] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 127.281165][ T69] ------------[ cut here ]------------ | [ 127.281525][ T69] sysfs group 'bridge' not found for kobject 'br0' | [ 127.281965][ T69] WARNING: CPU: 2 PID: 69 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 127.282541][ T69] Modules linked in: cls_matchall act_gact cls_flower sch_ingress vxlan ip6_udp_tunnel udp_tunnel [ 127.283668][ T69] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 127.284326][ T69] Workqueue: netns cleanup_net [ 127.284586][ T69] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 127.284892][ T69] Code: 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 45 48 8b 33 48 c7 c7 a0 a7 7c ae e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 da ff All code ======== 0: 89 d9 mov %ebx,%ecx 2: 49 8b 14 24 mov (%r12),%rdx 6: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax d: fc ff df 10: 48 c1 e9 03 shr $0x3,%rcx 14: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 18: 75 45 jne 0x5f 1a: 48 8b 33 mov (%rbx),%rsi 1d: 48 c7 c7 a0 a7 7c ae mov $0xffffffffae7ca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 48 83 c4 08 add $0x8,%rsp 32: 5b pop %rbx 33: 5d pop %rbp 34: 41 5c pop %r12 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: e8 e9 c7 da ff call 0xffffffffffdac829 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 48 83 c4 08 add $0x8,%rsp 8: 5b pop %rbx 9: 5d pop %rbp a: 41 5c pop %r12 c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: e8 e9 c7 da ff call 0xffffffffffdac7ff [ 127.286080][ T69] RSP: 0018:ffffc900004ffba0 EFLAGS: 00010282 [ 127.286455][ T69] RAX: 0000000000000000 RBX: ffffffffaebbe220 RCX: ffffffffabb1056f [ 127.286915][ T69] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 127.287436][ T69] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff5200009ff19 [ 127.287946][ T69] R10: ffffc900004ff8cf R11: 205d393654202020 R12: ffff8880063a2628 [ 127.288404][ T69] R13: ffff8880063a2df8 R14: ffffc900004ffc98 R15: ffff8880063a2bc0 [ 127.288890][ T69] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 127.289426][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 127.289831][ T69] CR2: 00007f3e94f8b000 CR3: 0000000012f34005 CR4: 00000000001706f0 [ 127.290310][ T69] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 127.290813][ T69] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 127.291280][ T69] Call Trace: [ 127.291503][ T69] [ 127.291726][ T69] ? __warn (kernel/panic.c:677) [ 127.291979][ T69] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 127.292241][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 127.292518][ T69] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 127.292800][ T69] ? handle_bug (arch/x86/kernel/traps.c:238) [ 127.293071][ T69] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 127.293345][ T69] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 127.293661][ T69] ? desc_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2615 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:534) [ 127.293934][ T69] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 127.294256][ T69] br_dev_delete (net/bridge/br_if.c:396) [ 127.294502][ T69] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 127.294782][ T69] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 127.295030][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 127.295301][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 127.295565][ T69] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 127.295812][ T69] ? process_one_work (kernel/workqueue.c:2609) [ 127.296099][ T69] process_one_work (kernel/workqueue.c:2638) [ 127.296367][ T69] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 127.296666][ T69] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 127.297003][ T69] ? assign_work (kernel/workqueue.c:1101) [ 127.297295][ T69] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 127.297588][ T69] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 127.297974][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 127.298270][ T69] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 127.298578][ T69] kthread (kernel/kthread.c:388) [ 127.298822][ T69] ? __pfx_kthread (kernel/kthread.c:341) [ 127.299099][ T69] ret_from_fork (arch/x86/kernel/process.c:153) [ 127.299362][ T69] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: dump_stack_lvl:print_report:kasan_report:kobject_put refcount_warn_saturate:br_sysfs_delbr:br_dev_delete:br_net_exit_batch_rtnl sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net sysfs_remove_group:br_dev_delete:br_net_exit_batch_rtnl:cleanup_net