====================================== | [ 57.158944][ T11] ================================================================== | [ 57.159444][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 57.159880][ T11] Read of size 1 at addr ffff888001aae43c by task kworker/u8:0/11 | [ 57.160315][ T11] [ 57.160866][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 57.161506][ T11] Workqueue: netns cleanup_net [ 57.161767][ T11] Call Trace: [ 57.161954][ T11] [ 57.162113][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 57.162360][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 57.162715][ T11] ? kobject_put (lib/kobject.c:729) [ 57.162955][ T11] print_report (mm/kasan/report.c:489) [ 57.163206][ 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) [ 57.163513][ T11] kasan_report (mm/kasan/report.c:603) [ 57.163782][ T11] ? kobject_put (lib/kobject.c:729) [ 57.164035][ T11] kobject_put (lib/kobject.c:729) [ 57.164299][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 57.164579][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 57.164858][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 57.165186][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 57.165457][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 57.165788][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 57.166071][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 57.166367][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 57.166670][ T11] process_one_work (kernel/workqueue.c:2638) [ 57.166942][ 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) [ 57.167216][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 57.167545][ T11] ? assign_work (kernel/workqueue.c:1101) [ 57.167821][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 57.168088][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 57.168381][ T11] kthread (kernel/kthread.c:388) [ 57.168635][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.168901][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 57.169148][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.169431][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 57.190036][ T11] ------------[ cut here ]------------ | [ 57.190323][ T11] refcount_t: underflow; use-after-free. | [ 57.190650][ T11] WARNING: CPU: 1 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 57.191146][ T11] Modules linked in: [ 57.191906][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 57.192633][ T11] Workqueue: netns cleanup_net [ 57.192889][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 57.193222][ 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 96 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 96 mov $0xffffffff96c27a20,%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 [ 57.194237][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 57.194568][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff93f1056f [ 57.195041][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 57.195524][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 57.195951][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff888007c4a000 [ 57.196372][ T11] R13: ffff888007c4adf8 R14: ffffc900000bfc98 R15: ffff888007c4abc0 [ 57.196790][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 57.197265][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.197611][ T11] CR2: 00005644cd0620f0 CR3: 0000000028f34006 CR4: 00000000001706f0 [ 57.198039][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.198578][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.199050][ T11] Call Trace: [ 57.199227][ T11] [ 57.199384][ T11] ? __warn (kernel/panic.c:677) [ 57.199603][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 57.199897][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 57.200149][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 57.200400][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 57.200630][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 57.200875][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 57.201184][ 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) [ 57.201451][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 57.201769][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 57.202097][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 57.202389][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 57.202659][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 57.202962][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 57.203235][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 57.203585][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 57.203900][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 57.204157][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 57.204435][ T11] process_one_work (kernel/workqueue.c:2638) [ 57.204698][ 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) [ 57.204945][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 57.205306][ T11] ? assign_work (kernel/workqueue.c:1101) [ 57.205553][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 57.205803][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 57.206083][ T11] kthread (kernel/kthread.c:388) [ 57.206303][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.206588][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 57.206845][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.207140][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 57.210474][ T11] ------------[ cut here ]------------ | [ 57.210853][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 57.211302][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 57.211861][ T11] Modules linked in: [ 57.212604][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 57.213323][ T11] Workqueue: netns cleanup_net [ 57.213620][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 57.213956][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 57.215161][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 57.215515][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 57.215933][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 57.216361][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 57.216777][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007c4a628 [ 57.217205][ T11] R13: ffff888007c4adf8 R14: ffffc900000bfc98 R15: ffff888007c4abc0 [ 57.217620][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 57.218141][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.218558][ T11] CR2: 00007f87d18de0e0 CR3: 0000000007de2001 CR4: 00000000001706f0 [ 57.219029][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.219528][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.219990][ T11] Call Trace: [ 57.220207][ T11] [ 57.220378][ T11] ? __warn (kernel/panic.c:677) [ 57.220624][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 57.220916][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 57.221232][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 57.221495][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 57.221764][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 57.222039][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 57.222334][ 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) [ 57.222621][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 57.222929][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 57.223196][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 57.223519][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 57.223794][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 57.224135][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 57.224440][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 57.224726][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 57.225041][ T11] process_one_work (kernel/workqueue.c:2638) [ 57.225345][ 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) [ 57.225619][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 57.225938][ T11] ? assign_work (kernel/workqueue.c:1101) [ 57.226213][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 57.226500][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 57.226811][ T11] kthread (kernel/kthread.c:388) [ 57.227069][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.227348][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 57.227613][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.227865][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 57.374384][ T11] ------------[ cut here ]------------ | [ 57.374710][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 57.375332][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 57.375922][ T11] Modules linked in: [ 57.376745][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 57.377482][ T11] Workqueue: netns cleanup_net [ 57.377785][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 57.378167][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 57.379336][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 57.379691][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 57.380191][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 57.380647][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 57.381128][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800904a628 [ 57.381604][ T11] R13: ffff88800904adf8 R14: ffffc900000bfc98 R15: ffff88800904abc0 [ 57.382100][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 57.382621][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.383034][ T11] CR2: 00007f597d95f270 CR3: 00000000034f2003 CR4: 00000000001706f0 [ 57.383482][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.383897][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.384319][ T11] Call Trace: [ 57.384503][ T11] [ 57.384659][ T11] ? __warn (kernel/panic.c:677) [ 57.384879][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 57.385144][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 57.385418][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 57.385662][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 57.385891][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 57.386147][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 57.386417][ 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) [ 57.386692][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 57.387029][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 57.387338][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 57.387650][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 57.387924][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 57.388216][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 57.388539][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 57.388816][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 57.389102][ T11] process_one_work (kernel/workqueue.c:2638) [ 57.389364][ 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) [ 57.389610][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 57.389897][ T11] ? assign_work (kernel/workqueue.c:1101) [ 57.390161][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 57.390415][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 57.390685][ T11] kthread (kernel/kthread.c:388) [ 57.390906][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.391215][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 57.391514][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 57.391789][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 66.614981][ T11] ------------[ cut here ]------------ | [ 66.615351][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 66.615731][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 66.616231][ T11] Modules linked in: [ 66.616954][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 66.617723][ T11] Workqueue: netns cleanup_net [ 66.618023][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.618335][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 66.619481][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 66.619874][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 66.620351][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 66.620847][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 66.621343][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880080fa628 [ 66.621822][ T11] R13: ffff8880080fadf8 R14: ffffc900000bfc98 R15: ffff8880080fabc0 [ 66.622291][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 66.622836][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.623226][ T11] CR2: 00007fff2ee72538 CR3: 0000000007c42003 CR4: 00000000001706f0 [ 66.623708][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.624217][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.624698][ T11] Call Trace: [ 66.624900][ T11] [ 66.625071][ T11] ? __warn (kernel/panic.c:677) [ 66.625341][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 66.625604][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.625935][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 66.626211][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 66.626444][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 66.626691][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 66.626957][ 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) [ 66.627200][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.627478][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 66.627728][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 66.628052][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 66.628324][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 66.628602][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 66.628902][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 66.629190][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 66.629500][ T11] process_one_work (kernel/workqueue.c:2638) [ 66.629805][ 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) [ 66.630076][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 66.630363][ T11] ? assign_work (kernel/workqueue.c:1101) [ 66.630612][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 66.630861][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 66.631137][ T11] kthread (kernel/kthread.c:388) [ 66.631362][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 66.631610][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 66.631844][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 66.632146][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 66.809433][ T11] ------------[ cut here ]------------ | [ 66.809786][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 66.810219][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 66.810729][ T11] Modules linked in: [ 66.811625][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 66.812339][ T11] Workqueue: netns cleanup_net [ 66.812646][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.812983][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 66.814069][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 66.814474][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 66.814942][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 66.815396][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 66.815873][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88802a912628 [ 66.816356][ T11] R13: ffff88802a912df8 R14: ffffc900000bfc98 R15: ffff88802a912bc0 [ 66.816821][ T11] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 66.817321][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.817727][ T11] CR2: 00007ffd6e5f0d8c CR3: 00000000091b4002 CR4: 00000000001706f0 [ 66.818228][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.818644][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.819065][ T11] Call Trace: [ 66.819243][ T11] [ 66.819399][ T11] ? __warn (kernel/panic.c:677) [ 66.819614][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 66.819869][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.820150][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 66.820452][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 66.820712][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 66.820987][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 66.821308][ 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) [ 66.821582][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 66.821923][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 66.822219][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 66.822548][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 66.822852][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 66.823150][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 66.823453][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 66.823754][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 66.824083][ T11] process_one_work (kernel/workqueue.c:2638) [ 66.824400][ 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) [ 66.824674][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 66.825008][ T11] ? assign_work (kernel/workqueue.c:1101) [ 66.825313][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 66.825611][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 66.825906][ T11] kthread (kernel/kthread.c:388) [ 66.826173][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 66.826535][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 66.826814][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 66.827110][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 92.027807][ T11] ------------[ cut here ]------------ | [ 92.028139][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 92.028592][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 92.029139][ T11] Modules linked in: [ 92.029948][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 92.030696][ T11] Workqueue: netns cleanup_net [ 92.031011][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 92.031352][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 92.032521][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 92.032912][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 92.033395][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 92.033882][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 92.034353][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88802a632628 [ 92.034861][ T11] R13: ffff88802a632df8 R14: ffffc900000bfc98 R15: ffff88802a632bc0 [ 92.035281][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 92.035755][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.036109][ T11] CR2: 00005644cdd8fe58 CR3: 0000000007c42005 CR4: 00000000001706f0 [ 92.036543][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.037021][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.037503][ T11] Call Trace: [ 92.037699][ T11] [ 92.037880][ T11] ? __warn (kernel/panic.c:677) [ 92.038168][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 92.038463][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 92.038788][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 92.039071][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 92.039324][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 92.039601][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 92.039928][ 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) [ 92.040207][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 92.040507][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 92.040795][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 92.041104][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 92.041376][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 92.041651][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 92.041910][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 92.042164][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 92.042439][ T11] process_one_work (kernel/workqueue.c:2638) [ 92.042714][ 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) [ 92.042961][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 92.043255][ T11] ? assign_work (kernel/workqueue.c:1101) [ 92.043499][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 92.043798][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 92.044101][ T11] kthread (kernel/kthread.c:388) [ 92.044360][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 92.044612][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 92.044852][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 92.045100][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 92.222621][ T11] ------------[ cut here ]------------ | [ 92.222959][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 92.223415][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 92.223943][ T11] Modules linked in: [ 92.224771][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 92.225517][ T11] Workqueue: netns cleanup_net [ 92.225825][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 92.226192][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 92.227361][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 92.227738][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 92.228235][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 92.228706][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 92.229216][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009822628 [ 92.229668][ T11] R13: ffff888009822df8 R14: ffffc900000bfc98 R15: ffff888009822bc0 [ 92.230150][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 92.230700][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.231089][ T11] CR2: 00005644cdd8fe58 CR3: 0000000028f34001 CR4: 00000000001706f0 [ 92.231557][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.232066][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.232484][ T11] Call Trace: [ 92.232677][ T11] [ 92.232837][ T11] ? __warn (kernel/panic.c:677) [ 92.233069][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 92.233326][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 92.233610][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 92.233857][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 92.234100][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 92.234390][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 92.234699][ 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) [ 92.234982][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 92.235350][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 92.235620][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 92.235963][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 92.236248][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 92.236527][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 92.236843][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 92.237127][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 92.237447][ T11] process_one_work (kernel/workqueue.c:2638) [ 92.237756][ 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) [ 92.238041][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 92.238362][ T11] ? assign_work (kernel/workqueue.c:1101) [ 92.238652][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 92.238946][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 92.239285][ T11] kthread (kernel/kthread.c:388) [ 92.239516][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 92.239819][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 92.240106][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 92.240393][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 101.627245][ T11] ------------[ cut here ]------------ | [ 101.627593][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 101.628051][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 101.628605][ T11] Modules linked in: [ 101.629417][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 101.630151][ T11] Workqueue: netns cleanup_net [ 101.630420][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 101.630799][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 101.631935][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 101.632311][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 101.632726][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 101.633150][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 101.633570][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007c32628 [ 101.633986][ T11] R13: ffff888007c32df8 R14: ffffc900000bfc98 R15: ffff888007c32bc0 [ 101.634456][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 101.635022][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 101.635421][ T11] CR2: 00007f46f00358e8 CR3: 0000000005fe4003 CR4: 00000000001706f0 [ 101.635911][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.636372][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 101.636840][ T11] Call Trace: [ 101.637063][ T11] [ 101.637245][ T11] ? __warn (kernel/panic.c:677) [ 101.637493][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 101.637778][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 101.638085][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 101.638379][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 101.638643][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 101.638932][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 101.639245][ 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) [ 101.639527][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 101.639847][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 101.640138][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 101.640448][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 101.640711][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 101.640990][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 101.641279][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 101.641527][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 101.641797][ T11] process_one_work (kernel/workqueue.c:2638) [ 101.642068][ 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) [ 101.642308][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 101.642596][ T11] ? assign_work (kernel/workqueue.c:1101) [ 101.642841][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 101.643101][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 101.643370][ T11] kthread (kernel/kthread.c:388) [ 101.643612][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 101.643905][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 101.644190][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 101.644436][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 101.811149][ T11] ------------[ cut here ]------------ | [ 101.811475][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 101.811924][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 101.812472][ T11] Modules linked in: [ 101.813318][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 101.814097][ T11] Workqueue: netns cleanup_net [ 101.814362][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 101.814739][ 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 96 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 96 mov $0xffffffff96bca7a0,%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 [ 101.815808][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 101.816134][ T11] RAX: 0000000000000000 RBX: ffffffff96fbe220 RCX: ffffffff93f1056f [ 101.816551][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 101.816975][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 101.817456][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009132628 [ 101.817963][ T11] R13: ffff888009132df8 R14: ffffc900000bfc98 R15: ffff888009132bc0 [ 101.818424][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 101.818967][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 101.819369][ T11] CR2: 00007fff2ee75c78 CR3: 0000000007c42001 CR4: 00000000001706f0 [ 101.819849][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.820322][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 101.820811][ T11] Call Trace: [ 101.821021][ T11] [ 101.821193][ T11] ? __warn (kernel/panic.c:677) [ 101.821449][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 101.821769][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 101.822085][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 101.822344][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 101.822605][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 101.822901][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 101.823197][ 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) [ 101.823471][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 101.823789][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 101.824085][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 101.824405][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 101.824688][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 101.824974][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 101.825320][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 101.825592][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 101.825930][ T11] process_one_work (kernel/workqueue.c:2638) [ 101.826232][ 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) [ 101.826507][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 101.826836][ T11] ? assign_work (kernel/workqueue.c:1101) [ 101.827133][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 101.827386][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 101.827664][ T11] kthread (kernel/kthread.c:388) [ 101.827878][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 101.828129][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 101.828365][ 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