====================================== | [ 157.712681][ T11] ================================================================== | [ 157.713125][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 157.713510][ T11] Read of size 1 at addr ffff888003b18cfc by task kworker/u8:0/11 | [ 157.713958][ T11] [ 157.714596][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 157.715253][ T11] Workqueue: netns cleanup_net [ 157.715510][ T11] Call Trace: [ 157.715693][ T11] [ 157.715850][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 157.716094][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 157.716468][ T11] ? kobject_put (lib/kobject.c:729) [ 157.716707][ T11] print_report (mm/kasan/report.c:489) [ 157.716944][ 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) [ 157.717214][ T11] kasan_report (mm/kasan/report.c:603) [ 157.717451][ T11] ? kobject_put (lib/kobject.c:729) [ 157.717701][ T11] kobject_put (lib/kobject.c:729) [ 157.717931][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 157.718197][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 157.718461][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 157.718786][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 157.719030][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 157.719354][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 157.719646][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 157.719899][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 157.720172][ T11] process_one_work (kernel/workqueue.c:2638) [ 157.720448][ 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) [ 157.720708][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 157.721019][ T11] ? assign_work (kernel/workqueue.c:1101) [ 157.721288][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 157.721545][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 157.721818][ T11] kthread (kernel/kthread.c:388) [ 157.722036][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.722285][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 157.722521][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.722767][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 157.743327][ T11] ------------[ cut here ]------------ | [ 157.743698][ T11] refcount_t: underflow; use-after-free. | [ 157.744045][ T11] WARNING: CPU: 2 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 157.744609][ 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 [ 157.746123][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 157.746838][ T11] Workqueue: netns cleanup_net [ 157.747105][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 157.747490][ 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 c2 b4 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 c2 b4 mov $0xffffffffb4c27a20,%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 [ 157.748524][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 157.748867][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb1f1056f [ 157.749295][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 157.749728][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 157.750170][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff8880222e2000 [ 157.750647][ T11] R13: ffff8880222e2df8 R14: ffffc900000bfc98 R15: ffff8880222e2bc0 [ 157.751115][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 157.751615][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 157.751979][ T11] CR2: 0000556677be1dec CR3: 0000000020734001 CR4: 00000000001706f0 [ 157.752427][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 157.752859][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 157.753279][ T11] Call Trace: [ 157.753470][ T11] [ 157.753631][ T11] ? __warn (kernel/panic.c:677) [ 157.753920][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 157.754270][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 157.754556][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 157.754822][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 157.755085][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 157.755364][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 157.755691][ 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) [ 157.755951][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 157.756333][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 157.756651][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 157.756907][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 157.757170][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 157.757484][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 157.757729][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 157.758032][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 157.758309][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 157.758673][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 157.758956][ T11] process_one_work (kernel/workqueue.c:2638) [ 157.759235][ 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) [ 157.759500][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 157.759812][ T11] ? assign_work (kernel/workqueue.c:1101) [ 157.760115][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 157.760428][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 157.760743][ T11] kthread (kernel/kthread.c:388) [ 157.760960][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.761203][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 157.761466][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.761747][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 157.765032][ T11] ------------[ cut here ]------------ | [ 157.765405][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 157.765784][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 157.766271][ 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 [ 157.767634][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 157.768280][ T11] Workqueue: netns cleanup_net [ 157.768545][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 157.768857][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 157.769929][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 157.770282][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 157.770773][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 157.771228][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 157.771685][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880222e2628 [ 157.772161][ T11] R13: ffff8880222e2df8 R14: ffffc900000bfc98 R15: ffff8880222e2bc0 [ 157.772609][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 157.773132][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 157.773494][ T11] CR2: 00007f6538f44270 CR3: 0000000008900005 CR4: 00000000001706f0 [ 157.773973][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 157.774437][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 157.774903][ T11] Call Trace: [ 157.775090][ T11] [ 157.775269][ T11] ? __warn (kernel/panic.c:677) [ 157.775519][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 157.775800][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 157.776095][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 157.776390][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 157.776634][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 157.776898][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 157.777214][ 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) [ 157.777469][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 157.777779][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 157.778052][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 157.778338][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 157.778579][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 157.778878][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 157.779144][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 157.779400][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 157.779677][ T11] process_one_work (kernel/workqueue.c:2638) [ 157.779945][ 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) [ 157.780219][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 157.780553][ T11] ? assign_work (kernel/workqueue.c:1101) [ 157.780824][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 157.781082][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 157.781404][ T11] kthread (kernel/kthread.c:388) [ 157.781636][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.781899][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 157.782176][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.782442][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 157.914620][ T11] ------------[ cut here ]------------ | [ 157.914999][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 157.915417][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 157.915985][ 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 [ 157.917552][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 157.918263][ T11] Workqueue: netns cleanup_net [ 157.918566][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 157.918928][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 157.920090][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 157.920452][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 157.920931][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 157.921421][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 157.921868][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888021e7a628 [ 157.922298][ T11] R13: ffff888021e7adf8 R14: ffffc900000bfc98 R15: ffff888021e7abc0 [ 157.922749][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 157.923232][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 157.923586][ T11] CR2: 00007fffe738ee68 CR3: 0000000005ddc006 CR4: 00000000001706f0 [ 157.924034][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 157.924500][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 157.924992][ T11] Call Trace: [ 157.925186][ T11] [ 157.925359][ T11] ? __warn (kernel/panic.c:677) [ 157.925598][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 157.925896][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 157.926203][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 157.926461][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 157.926694][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 157.926960][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 157.927242][ 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) [ 157.927504][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 157.927786][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 157.928045][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 157.928399][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 157.928691][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 157.928962][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 157.929241][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 157.929514][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 157.929803][ T11] process_one_work (kernel/workqueue.c:2638) [ 157.930070][ 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) [ 157.930330][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 157.930631][ T11] ? assign_work (kernel/workqueue.c:1101) [ 157.930880][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 157.931147][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 157.931433][ T11] kthread (kernel/kthread.c:388) [ 157.931664][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.931969][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 157.932232][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 157.932516][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 167.405546][ T11] ------------[ cut here ]------------ | [ 167.405940][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 167.406399][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 167.406983][ 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 [ 167.408562][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 167.409205][ T11] Workqueue: netns cleanup_net [ 167.409484][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.409834][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 167.411029][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 167.411398][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 167.411870][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 167.412359][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 167.412830][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008b0a628 [ 167.413313][ T11] R13: ffff888008b0adf8 R14: ffffc900000bfc98 R15: ffff888008b0abc0 [ 167.413801][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 167.414353][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 167.414704][ T11] CR2: 00007f2b440148e8 CR3: 000000000634e005 CR4: 00000000001706f0 [ 167.415119][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 167.415541][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 167.415959][ T11] Call Trace: [ 167.416149][ T11] [ 167.416352][ T11] ? __warn (kernel/panic.c:677) [ 167.416618][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 167.416926][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.417237][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 167.417538][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 167.417795][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 167.418091][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 167.418414][ 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) [ 167.418693][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.418990][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 167.419308][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 167.419635][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 167.419896][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 167.420191][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 167.420509][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 167.420826][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 167.421137][ T11] process_one_work (kernel/workqueue.c:2638) [ 167.421448][ 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) [ 167.421724][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 167.422056][ T11] ? assign_work (kernel/workqueue.c:1101) [ 167.422361][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 167.422662][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 167.422972][ T11] kthread (kernel/kthread.c:388) [ 167.423234][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 167.423528][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 167.423814][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 167.424094][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 167.613624][ T11] ------------[ cut here ]------------ | [ 167.613981][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 167.614397][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 167.614884][ 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 [ 167.616220][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 167.616937][ T11] Workqueue: netns cleanup_net [ 167.617201][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.617560][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 167.618812][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 167.619220][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 167.619724][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 167.620226][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 167.620719][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800990a628 [ 167.621237][ T11] R13: ffff88800990adf8 R14: ffffc900000bfc98 R15: ffff88800990abc0 [ 167.621721][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 167.622265][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 167.622677][ T11] CR2: 00007f2b440148e8 CR3: 0000000020734004 CR4: 00000000001706f0 [ 167.623171][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 167.623661][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 167.624181][ T11] Call Trace: [ 167.624380][ T11] [ 167.624570][ T11] ? __warn (kernel/panic.c:677) [ 167.624836][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 167.625117][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.625452][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 167.625739][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 167.626031][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 167.626289][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 167.626570][ 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) [ 167.626806][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 167.627083][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 167.627338][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 167.627619][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 167.627877][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 167.628152][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 167.628501][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 167.628796][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 167.629130][ T11] process_one_work (kernel/workqueue.c:2638) [ 167.629466][ 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) [ 167.629743][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 167.630048][ T11] ? assign_work (kernel/workqueue.c:1101) [ 167.630381][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 167.630672][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 167.630964][ T11] kthread (kernel/kthread.c:388) [ 167.631232][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 167.631568][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 167.631835][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 167.632105][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 193.789604][ T11] ------------[ cut here ]------------ | [ 193.789956][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 193.790425][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 193.790969][ 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 [ 193.792408][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 193.793142][ T11] Workqueue: netns cleanup_net [ 193.793421][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 193.793808][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 193.794975][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 193.795350][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 193.795826][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 193.796256][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 193.796680][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a3ea628 [ 193.797097][ T11] R13: ffff88800a3eadf8 R14: ffffc900000bfc98 R15: ffff88800a3eabc0 [ 193.797523][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 193.798097][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 193.798502][ T11] CR2: 00007f1e783060e0 CR3: 000000000634e006 CR4: 00000000001706f0 [ 193.798983][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 193.799450][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 193.799933][ T11] Call Trace: [ 193.800125][ T11] [ 193.800305][ T11] ? __warn (kernel/panic.c:677) [ 193.800568][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 193.800862][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 193.801179][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 193.801467][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 193.801723][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 193.802039][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 193.802348][ 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) [ 193.802632][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 193.802978][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 193.803245][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 193.803581][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 193.803849][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 193.804163][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 193.804455][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 193.804706][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 193.804981][ T11] process_one_work (kernel/workqueue.c:2638) [ 193.805243][ 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) [ 193.805496][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 193.805783][ T11] ? assign_work (kernel/workqueue.c:1101) [ 193.806029][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 193.806293][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 193.806571][ T11] kthread (kernel/kthread.c:388) [ 193.806853][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 193.807145][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 193.807390][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 193.807634][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 193.979832][ T11] ------------[ cut here ]------------ | [ 193.980201][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 193.980636][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 193.981182][ 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 [ 193.982683][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 193.983398][ T11] Workqueue: netns cleanup_net [ 193.983694][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 193.984062][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 193.985158][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 193.985572][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 193.986031][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 193.986537][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 193.987026][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009b72628 [ 193.987512][ T11] R13: ffff888009b72df8 R14: ffffc900000bfc98 R15: ffff888009b72bc0 [ 193.987968][ T11] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 193.988509][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 193.988955][ T11] CR2: 00007f94a480a000 CR3: 0000000020734005 CR4: 00000000001706f0 [ 193.989442][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 193.989898][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 193.990385][ T11] Call Trace: [ 193.990606][ T11] [ 193.990796][ T11] ? __warn (kernel/panic.c:677) [ 193.991067][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 193.991374][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 193.991738][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 193.992057][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 193.992362][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 193.992652][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 193.992980][ 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) [ 193.993286][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 193.993628][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 193.993913][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 193.994259][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 193.994579][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 193.994888][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 193.995185][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 193.995443][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 193.995718][ T11] process_one_work (kernel/workqueue.c:2638) [ 193.995984][ 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) [ 193.996240][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 193.996537][ T11] ? assign_work (kernel/workqueue.c:1101) [ 193.996781][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 193.997035][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 193.997308][ T11] kthread (kernel/kthread.c:388) [ 193.997599][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 193.997912][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 193.998206][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 193.998498][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 203.456992][ T11] ------------[ cut here ]------------ | [ 203.457372][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 203.457747][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 203.458277][ 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 [ 203.459903][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 203.460627][ T11] Workqueue: netns cleanup_net [ 203.460886][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 203.461327][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 203.462407][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 203.462829][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 203.463366][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 203.463864][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 203.464379][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88802239a628 [ 203.464878][ T11] R13: ffff88802239adf8 R14: ffffc900000bfc98 R15: ffff88802239abc0 [ 203.465429][ T11] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 203.465936][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 203.466400][ T11] CR2: 00007f2a474871b4 CR3: 000000000634e003 CR4: 00000000001706f0 [ 203.466919][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 203.467453][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 203.467958][ T11] Call Trace: [ 203.468178][ T11] [ 203.468379][ T11] ? __warn (kernel/panic.c:677) [ 203.468676][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 203.469029][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 203.469398][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 203.469642][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 203.469872][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 203.470128][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 203.470429][ 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) [ 203.470684][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 203.470983][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 203.471261][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 203.471580][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 203.471900][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 203.472223][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 203.472559][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 203.472868][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 203.473154][ T11] process_one_work (kernel/workqueue.c:2638) [ 203.473431][ 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) [ 203.473674][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 203.473980][ T11] ? assign_work (kernel/workqueue.c:1101) [ 203.474255][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 203.474552][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 203.474857][ T11] kthread (kernel/kthread.c:388) [ 203.475097][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 203.475381][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 203.475635][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 203.475884][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 203.657695][ T11] ------------[ cut here ]------------ | [ 203.658049][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 203.658527][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 203.659101][ 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 [ 203.660688][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 203.661589][ T11] Workqueue: netns cleanup_net [ 203.661947][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 203.662383][ 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 bc b4 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 bc b4 mov $0xffffffffb4bca7a0,%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 [ 203.663516][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 203.663897][ T11] RAX: 0000000000000000 RBX: ffffffffb4fbe220 RCX: ffffffffb1f1056f [ 203.664420][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 203.664898][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 203.665396][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800817a628 [ 203.665867][ T11] R13: ffff88800817adf8 R14: ffffc900000bfc98 R15: ffff88800817abc0 [ 203.666382][ T11] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 203.666949][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 203.667354][ T11] CR2: 00007f2a474871b4 CR3: 000000000634e003 CR4: 00000000001706f0 [ 203.667850][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 203.668349][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 203.668838][ T11] Call Trace: [ 203.669026][ T11] [ 203.669231][ T11] ? __warn (kernel/panic.c:677) [ 203.669460][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 203.669722][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 203.669999][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 203.670250][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 203.670491][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 203.670742][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 203.671011][ 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) [ 203.671295][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 203.671635][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 203.671950][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 203.672268][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 203.672558][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 203.672839][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 203.673205][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 203.673543][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 203.673864][ T11] process_one_work (kernel/workqueue.c:2638) [ 203.674173][ 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) [ 203.674470][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 203.674813][ T11] ? assign_work (kernel/workqueue.c:1101) [ 203.675122][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 203.675426][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 203.675750][ T11] kthread (kernel/kthread.c:388) [ 203.676023][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 203.676368][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 203.676634][ 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