====================================== | [ 155.445206][ T11] ================================================================== | [ 155.445705][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 155.446120][ T11] Read of size 1 at addr ffff88800a83797c by task kworker/u8:0/11 | [ 155.446576][ T11] [ 155.447136][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 155.447783][ T11] Workqueue: netns cleanup_net [ 155.448092][ T11] Call Trace: [ 155.448287][ T11] [ 155.448448][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 155.448725][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 155.449110][ T11] ? kobject_put (lib/kobject.c:729) [ 155.449366][ T11] print_report (mm/kasan/report.c:489) [ 155.449615][ T11] ? 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) [ 155.449903][ T11] kasan_report (mm/kasan/report.c:603) [ 155.450160][ T11] ? kobject_put (lib/kobject.c:729) [ 155.450421][ T11] kobject_put (lib/kobject.c:729) [ 155.450659][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 155.450926][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 155.451197][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 155.451508][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 155.451749][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 155.452075][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 155.452365][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 155.452640][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 155.452922][ T11] process_one_work (kernel/workqueue.c:2638) [ 155.453224][ T11] ? 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) [ 155.453493][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 155.453801][ T11] ? assign_work (kernel/workqueue.c:1101) [ 155.454052][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 155.454336][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 155.454635][ T11] kthread (kernel/kthread.c:388) [ 155.454871][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.455129][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 155.455388][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.455654][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 155.475232][ T11] ------------[ cut here ]------------ | [ 155.475518][ T11] refcount_t: underflow; use-after-free. | [ 155.475863][ T11] WARNING: CPU: 2 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 155.476354][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 155.477696][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 155.478344][ T11] Workqueue: netns cleanup_net [ 155.478620][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 155.478952][ T11] 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 a2 8e 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 a2 8e mov $0xffffffff8ea27a20,%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 [ 155.480076][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 155.480422][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8bd1056f [ 155.480886][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 155.481338][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 155.481794][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff888007992000 [ 155.482265][ T11] R13: ffff888007992df8 R14: ffffc900000bfc98 R15: ffff888007992bc0 [ 155.482710][ T11] FS: 0000000000000000(0000) GS:ffff88802ee00000(0000) knlGS:0000000000000000 [ 155.483179][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 155.483529][ T11] CR2: 00007fff6644cb38 CR3: 0000000035f34006 CR4: 00000000001706f0 [ 155.483956][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 155.484378][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 155.484881][ T11] Call Trace: [ 155.485062][ T11] [ 155.485224][ T11] ? __warn (kernel/panic.c:677) [ 155.485502][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 155.485913][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 155.486178][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 155.486453][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 155.486704][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 155.486955][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 155.487249][ T11] ? 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) [ 155.487512][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 155.487913][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 155.488213][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 155.488462][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 155.488726][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 155.489011][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 155.489250][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 155.489555][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 155.489826][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 155.490126][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 155.490421][ T11] process_one_work (kernel/workqueue.c:2638) [ 155.490714][ T11] ? 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) [ 155.490977][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 155.491298][ T11] ? assign_work (kernel/workqueue.c:1101) [ 155.491562][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 155.491843][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 155.492136][ T11] kthread (kernel/kthread.c:388) [ 155.492370][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.492653][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 155.492916][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.493187][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 155.496460][ T11] ------------[ cut here ]------------ | [ 155.496768][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 155.497183][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 155.497748][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 155.499215][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 155.499868][ T11] Workqueue: netns cleanup_net [ 155.500127][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 155.500434][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 155.501461][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 155.501841][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 155.502311][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 155.502783][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 155.503240][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007992628 [ 155.503710][ T11] R13: ffff888007992df8 R14: ffffc900000bfc98 R15: ffff888007992bc0 [ 155.504166][ T11] FS: 0000000000000000(0000) GS:ffff88802ee00000(0000) knlGS:0000000000000000 [ 155.504764][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 155.505161][ T11] CR2: 00007fff6644cb38 CR3: 0000000035f34006 CR4: 00000000001706f0 [ 155.505627][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 155.506093][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 155.506537][ T11] Call Trace: [ 155.506741][ T11] [ 155.506918][ T11] ? __warn (kernel/panic.c:677) [ 155.507147][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 155.507437][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 155.507827][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 155.508091][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 155.508356][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 155.508620][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 155.508891][ T11] ? 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) [ 155.509154][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 155.509471][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 155.509732][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 155.510082][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 155.510361][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 155.510682][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 155.510986][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 155.511241][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 155.511520][ T11] process_one_work (kernel/workqueue.c:2638) [ 155.511809][ T11] ? 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) [ 155.512098][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 155.512396][ T11] ? assign_work (kernel/workqueue.c:1101) [ 155.512653][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 155.512909][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 155.513184][ T11] kthread (kernel/kthread.c:388) [ 155.513404][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.513660][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 155.513897][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.514145][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 155.656710][ T11] ------------[ cut here ]------------ | [ 155.657029][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 155.657449][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 155.657988][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 155.659469][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 155.660139][ T11] Workqueue: netns cleanup_net [ 155.660404][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 155.660724][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 155.661759][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 155.662089][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 155.662562][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 155.663026][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 155.663451][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880063ba628 [ 155.663877][ T11] R13: ffff8880063badf8 R14: ffffc900000bfc98 R15: ffff8880063babc0 [ 155.664297][ T11] FS: 0000000000000000(0000) GS:ffff88802ee00000(0000) knlGS:0000000000000000 [ 155.664775][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 155.665148][ T11] CR2: 00007fff6644cb38 CR3: 0000000035f34006 CR4: 00000000001706f0 [ 155.665625][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 155.666044][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 155.666464][ T11] Call Trace: [ 155.666652][ T11] [ 155.666812][ T11] ? __warn (kernel/panic.c:677) [ 155.667036][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 155.667298][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 155.667576][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 155.667833][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 155.668068][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 155.668317][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 155.668598][ T11] ? 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) [ 155.668844][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 155.669123][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 155.669374][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 155.669667][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 155.669909][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 155.670218][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 155.670525][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 155.670802][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 155.671092][ T11] process_one_work (kernel/workqueue.c:2638) [ 155.671372][ T11] ? 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) [ 155.671665][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 155.671963][ T11] ? assign_work (kernel/workqueue.c:1101) [ 155.672230][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 155.672531][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 155.672829][ T11] kthread (kernel/kthread.c:388) [ 155.673046][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.673300][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 155.673540][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 155.673792][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 164.814772][ T11] ------------[ cut here ]------------ | [ 164.815104][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 164.815543][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 164.816095][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 164.817592][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 164.818294][ T11] Workqueue: netns cleanup_net [ 164.818600][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 164.818942][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 164.820116][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 164.820461][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 164.820899][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 164.821320][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 164.821746][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800617a628 [ 164.822166][ T11] R13: ffff88800617adf8 R14: ffffc900000bfc98 R15: ffff88800617abc0 [ 164.822621][ T11] FS: 0000000000000000(0000) GS:ffff88802ea00000(0000) knlGS:0000000000000000 [ 164.823137][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 164.823509][ T11] CR2: 00007fe53a77e0e0 CR3: 0000000037720003 CR4: 00000000001706f0 [ 164.823979][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 164.824413][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 164.824842][ T11] Call Trace: [ 164.825021][ T11] [ 164.825185][ T11] ? __warn (kernel/panic.c:677) [ 164.825409][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 164.825679][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 164.825958][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 164.826203][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 164.826468][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 164.826742][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 164.827052][ T11] ? 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) [ 164.827295][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 164.827575][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 164.827837][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 164.828123][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 164.828362][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 164.828637][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 164.828905][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 164.829168][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 164.829448][ T11] process_one_work (kernel/workqueue.c:2638) [ 164.829722][ T11] ? 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) [ 164.829993][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 164.830329][ T11] ? assign_work (kernel/workqueue.c:1101) [ 164.830599][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 164.830881][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 164.831179][ T11] kthread (kernel/kthread.c:388) [ 164.831406][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 164.831702][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 164.831947][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 164.832219][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 164.996027][ T11] ------------[ cut here ]------------ | [ 164.996346][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 164.996732][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 164.997230][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 164.998756][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 164.999402][ T11] Workqueue: netns cleanup_net [ 164.999714][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 165.000079][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 165.001156][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 165.001512][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 165.001975][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 165.002445][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 165.002913][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800b02a628 [ 165.003365][ T11] R13: ffff88800b02adf8 R14: ffffc900000bfc98 R15: ffff88800b02abc0 [ 165.003838][ T11] FS: 0000000000000000(0000) GS:ffff88802e600000(0000) knlGS:0000000000000000 [ 165.004364][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 165.004767][ T11] CR2: 00007f66122fe000 CR3: 0000000035f34001 CR4: 00000000001706f0 [ 165.005209][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 165.005690][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 165.006157][ T11] Call Trace: [ 165.006377][ T11] [ 165.006560][ T11] ? __warn (kernel/panic.c:677) [ 165.006825][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 165.007100][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 165.007408][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 165.007694][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 165.007951][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 165.008248][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 165.008582][ T11] ? 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) [ 165.008861][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 165.009169][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 165.009464][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 165.009793][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 165.010075][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 165.010356][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 165.010670][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 165.010977][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 165.011288][ T11] process_one_work (kernel/workqueue.c:2638) [ 165.011585][ T11] ? 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) [ 165.011878][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 165.012204][ T11] ? assign_work (kernel/workqueue.c:1101) [ 165.012493][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 165.012783][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 165.013109][ T11] kthread (kernel/kthread.c:388) [ 165.013378][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 165.013636][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 165.013883][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 165.014129][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 190.013389][ T11] ------------[ cut here ]------------ | [ 190.013749][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 190.014168][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 190.014741][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 190.016364][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 190.017044][ T11] Workqueue: netns cleanup_net [ 190.017321][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 190.017642][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 190.018810][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 190.019188][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 190.019734][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 190.020177][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 190.020643][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007772628 [ 190.021104][ T11] R13: ffff888007772df8 R14: ffffc900000bfc98 R15: ffff888007772bc0 [ 190.021539][ T11] FS: 0000000000000000(0000) GS:ffff88802ea00000(0000) knlGS:0000000000000000 [ 190.022075][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 190.022502][ T11] CR2: 00007fe53a77e0e0 CR3: 0000000037720003 CR4: 00000000001706f0 [ 190.022972][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 190.023473][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 190.023967][ T11] Call Trace: [ 190.024182][ T11] [ 190.024377][ T11] ? __warn (kernel/panic.c:677) [ 190.024623][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 190.024902][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 190.025205][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 190.025482][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 190.025725][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 190.025976][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 190.026259][ T11] ? 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) [ 190.026522][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 190.026840][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 190.027146][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 190.027518][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 190.027783][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 190.028040][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 190.028321][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 190.028603][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 190.028910][ T11] process_one_work (kernel/workqueue.c:2638) [ 190.029201][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 190.029525][ T11] ? assign_work (kernel/workqueue.c:1101) [ 190.029871][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 190.030144][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 190.030493][ T11] kthread (kernel/kthread.c:388) [ 190.030741][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 190.031001][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 190.031284][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 190.031531][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 190.213037][ T11] ------------[ cut here ]------------ | [ 190.213350][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 190.213742][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 190.214300][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 190.215839][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 190.216568][ T11] Workqueue: netns cleanup_net [ 190.216897][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 190.217239][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 190.218476][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 190.218884][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 190.219342][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 190.219799][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 190.220259][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888005b22628 [ 190.220746][ T11] R13: ffff888005b22df8 R14: ffffc900000bfc98 R15: ffff888005b22bc0 [ 190.221222][ T11] FS: 0000000000000000(0000) GS:ffff88802e600000(0000) knlGS:0000000000000000 [ 190.221727][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 190.222123][ T11] CR2: 00007ff20d716000 CR3: 0000000035f34003 CR4: 00000000001706f0 [ 190.222617][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 190.223079][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 190.223532][ T11] Call Trace: [ 190.223778][ T11] [ 190.223952][ T11] ? __warn (kernel/panic.c:677) [ 190.224192][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 190.224461][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 190.224789][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 190.225074][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 190.225346][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 190.225666][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 190.225989][ T11] ? 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) [ 190.226258][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 190.226586][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 190.226891][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 190.227217][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 190.227492][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 190.227790][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 190.228094][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 190.228392][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 190.228707][ T11] process_one_work (kernel/workqueue.c:2638) [ 190.228980][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 190.229270][ T11] ? assign_work (kernel/workqueue.c:1101) [ 190.229528][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 190.229791][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 190.230064][ T11] kthread (kernel/kthread.c:388) [ 190.230295][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 190.230542][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 190.230837][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 190.231097][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 199.578030][ T11] ------------[ cut here ]------------ | [ 199.578406][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 199.578841][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 199.579369][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 199.580922][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 199.581615][ T11] Workqueue: netns cleanup_net [ 199.581899][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 199.582251][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 199.583322][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 199.583711][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 199.584153][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 199.584631][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 199.585097][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880078da628 [ 199.585550][ T11] R13: ffff8880078dadf8 R14: ffffc900000bfc98 R15: ffff8880078dabc0 [ 199.586000][ T11] FS: 0000000000000000(0000) GS:ffff88802e600000(0000) knlGS:0000000000000000 [ 199.586508][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 199.586911][ T11] CR2: 00007fff664515f8 CR3: 00000000068ee001 CR4: 00000000001706f0 [ 199.587368][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 199.587844][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 199.588303][ T11] Call Trace: [ 199.588512][ T11] [ 199.588709][ T11] ? __warn (kernel/panic.c:677) [ 199.588960][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 199.589253][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 199.589564][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 199.589852][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 199.590126][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 199.590400][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 199.590679][ T11] ? 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) [ 199.590919][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 199.591200][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 199.591457][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 199.591771][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 199.592016][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 199.592277][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 199.592546][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 199.592807][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 199.593121][ T11] process_one_work (kernel/workqueue.c:2638) [ 199.593415][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 199.593749][ T11] ? assign_work (kernel/workqueue.c:1101) [ 199.594025][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 199.594282][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 199.594556][ T11] kthread (kernel/kthread.c:388) [ 199.594783][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 199.595032][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 199.595270][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 199.595543][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 199.780085][ T11] ------------[ cut here ]------------ | [ 199.780412][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 199.780815][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 199.781309][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c [ 199.782864][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 199.783571][ T11] Workqueue: netns cleanup_net [ 199.783887][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 199.784243][ T11] 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 9c 8e 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 9c 8e mov $0xffffffff8e9ca7a0,%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 [ 199.785297][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 199.785673][ T11] RAX: 0000000000000000 RBX: ffffffff8edbe220 RCX: ffffffff8bd1056f [ 199.786137][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 199.786617][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 199.787065][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800619a628 [ 199.787534][ T11] R13: ffff88800619adf8 R14: ffffc900000bfc98 R15: ffff88800619abc0 [ 199.788013][ T11] FS: 0000000000000000(0000) GS:ffff88802e600000(0000) knlGS:0000000000000000 [ 199.788532][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 199.788919][ T11] CR2: 00007fc4eec3630d CR3: 0000000035f34003 CR4: 00000000001706f0 [ 199.789391][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 199.789865][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 199.790329][ T11] Call Trace: [ 199.790530][ T11] [ 199.790697][ T11] ? __warn (kernel/panic.c:677) [ 199.790917][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 199.791177][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 199.791454][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 199.791710][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 199.791944][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 199.792192][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 199.792496][ T11] ? 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) [ 199.792764][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 199.793088][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 199.793379][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 199.793690][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 199.793990][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 199.794296][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 199.794595][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 199.794879][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 199.795198][ T11] process_one_work (kernel/workqueue.c:2638) [ 199.795531][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 199.795859][ T11] ? assign_work (kernel/workqueue.c:1101) [ 199.796144][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 199.796441][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 199.796772][ T11] kthread (kernel/kthread.c:388) [ 199.797039][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 199.797328][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 199.797574][ T11] ? __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