====================================== | [ 1487.888778][ T11] ================================================================== | [ 1487.889409][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 1487.889906][ T11] Read of size 1 at addr ffff888003de2e3c by task kworker/u8:0/11 | [ 1487.890332][ T11] [ 1487.890958][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1487.891731][ T11] Workqueue: netns cleanup_net [ 1487.892071][ T11] Call Trace: [ 1487.892337][ T11] [ 1487.892513][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 1487.892797][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 1487.893297][ T11] ? kobject_put (lib/kobject.c:729) [ 1487.893610][ T11] print_report (mm/kasan/report.c:489) [ 1487.893900][ 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) [ 1487.894229][ T11] kasan_report (mm/kasan/report.c:603) [ 1487.894485][ T11] ? kobject_put (lib/kobject.c:729) [ 1487.894756][ T11] kobject_put (lib/kobject.c:729) [ 1487.895051][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1487.895472][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1487.895842][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1487.896266][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1487.896536][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1487.896887][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1487.897188][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1487.897552][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1487.897823][ T11] process_one_work (kernel/workqueue.c:2638) [ 1487.898088][ 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) [ 1487.898362][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1487.898681][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1487.898992][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1487.899275][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1487.899581][ T11] kthread (kernel/kthread.c:388) [ 1487.899822][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1487.900161][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1487.900451][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1487.900740][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1487.922749][ T11] ------------[ cut here ]------------ | [ 1487.923042][ T11] refcount_t: underflow; use-after-free. | [ 1487.923424][ T11] WARNING: CPU: 1 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 1487.924117][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 1487.925578][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1487.926366][ T11] Workqueue: netns cleanup_net [ 1487.926695][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1487.927085][ T11] Code: 64 5d 03 80 fb 01 0f 87 54 5a 91 01 83 e3 01 0f 85 4d ff ff ff c6 05 d6 64 5d 03 01 90 48 c7 c7 00 58 e2 87 e8 5e 4c 2b ff 90 <0f> 0b 90 90 e9 2f ff ff ff 48 89 df e8 7c 23 a7 ff e9 b6 fe ff ff All code ======== 0: 64 5d fs pop %rbp 2: 03 80 fb 01 0f 87 add -0x78f0fe05(%rax),%eax 8: 54 push %rsp 9: 5a pop %rdx a: 91 xchg %eax,%ecx b: 01 83 e3 01 0f 85 add %eax,-0x7af0fe1d(%rbx) 11: 4d ff rex.WRB (bad) 13: ff (bad) 14: ff c6 inc %esi 16: 05 d6 64 5d 03 add $0x35d64d6,%eax 1b: 01 90 48 c7 c7 00 add %edx,0xc7c748(%rax) 21: 58 pop %rax 22: e2 87 loop 0xffffffffffffffab 24: e8 5e 4c 2b ff call 0xffffffffff2b4c87 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 7c 23 a7 ff call 0xffffffffffa723b7 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 7c 23 a7 ff call 0xffffffffffa7238d 11: e9 b6 fe ff ff jmp 0xfffffffffffffecc [ 1487.928262][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 1487.928578][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8530e74f [ 1487.929082][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1487.929496][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 1487.929912][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff8880094ea000 [ 1487.930351][ T11] R13: ffff8880094eadd8 R14: ffffc900000bfc98 R15: ffff8880094eaba0 [ 1487.930832][ T11] FS: 0000000000000000(0000) GS:ffff88802ec00000(0000) knlGS:0000000000000000 [ 1487.931346][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1487.931800][ T11] CR2: 000055f8251e53c8 CR3: 000000000a634001 CR4: 00000000001706f0 [ 1487.932411][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1487.932873][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1487.933500][ T11] Call Trace: [ 1487.933733][ T11] [ 1487.934062][ T11] ? __warn (kernel/panic.c:677) [ 1487.934303][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1487.934664][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1487.934977][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 1487.935236][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1487.935521][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1487.935812][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1487.936234][ 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) [ 1487.936515][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1487.936907][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1487.937375][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1487.937788][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1487.938161][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1487.938548][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1487.938842][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1487.939196][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1487.939525][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1487.939852][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1487.940283][ T11] process_one_work (kernel/workqueue.c:2638) [ 1487.940596][ 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) [ 1487.940873][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1487.941178][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1487.941444][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1487.941694][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1487.941998][ T11] kthread (kernel/kthread.c:388) [ 1487.942244][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1487.942519][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1487.942784][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1487.943080][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1487.946524][ T11] ------------[ cut here ]------------ | [ 1487.946870][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1487.947290][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1487.947827][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 1487.949226][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1487.949955][ T11] Workqueue: netns cleanup_net [ 1487.950261][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1487.950607][ 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 99 dc 87 e8 10 18 5f ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 69 ee 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 99 dc 87 mov $0xffffffff87dc99a0,%rdi 24: e8 10 18 5f ff call 0xffffffffff5f1839 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 69 ee da ff call 0xffffffffffdaeea9 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 69 ee da ff call 0xffffffffffdaee7f [ 1487.951762][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1487.952122][ T11] RAX: 0000000000000000 RBX: ffffffffc060ef00 RCX: ffffffff8530e74f [ 1487.952578][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1487.953023][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1487.953485][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880094ea610 [ 1487.954041][ T11] R13: ffff8880094eadd8 R14: ffffc900000bfc98 R15: ffff8880094eaba0 [ 1487.954502][ T11] FS: 0000000000000000(0000) GS:ffff88802ec00000(0000) knlGS:0000000000000000 [ 1487.955013][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1487.955406][ T11] CR2: 000055f8251e53c8 CR3: 000000000a634001 CR4: 00000000001706f0 [ 1487.955861][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1487.956279][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1487.956718][ T11] Call Trace: [ 1487.956918][ T11] [ 1487.957102][ T11] ? __warn (kernel/panic.c:677) [ 1487.957336][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1487.957613][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1487.957959][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1487.958215][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1487.958458][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1487.958728][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1487.959091][ 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) [ 1487.959344][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1487.959679][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1487.960075][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1487.960479][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1487.960754][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1487.961101][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1487.961403][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1487.961714][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1487.962004][ T11] process_one_work (kernel/workqueue.c:2638) [ 1487.962305][ 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) [ 1487.962589][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1487.962949][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1487.963221][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1487.963548][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1487.963856][ T11] kthread (kernel/kthread.c:388) [ 1487.964128][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1487.964413][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1487.964675][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1487.964937][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1488.150321][ T11] ------------[ cut here ]------------ | [ 1488.150816][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1488.151448][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1488.152288][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 1488.154247][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1488.155295][ T11] Workqueue: netns cleanup_net [ 1488.155702][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1488.156203][ 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 99 dc 87 e8 10 18 5f ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 69 ee 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 99 dc 87 mov $0xffffffff87dc99a0,%rdi 24: e8 10 18 5f ff call 0xffffffffff5f1839 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 69 ee da ff call 0xffffffffffdaeea9 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 69 ee da ff call 0xffffffffffdaee7f [ 1488.157773][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1488.158312][ T11] RAX: 0000000000000000 RBX: ffffffffc060ef00 RCX: ffffffff8530e74f [ 1488.158967][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1488.159644][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1488.160397][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888007932610 [ 1488.161084][ T11] R13: ffff888007932dd8 R14: ffffc900000bfc98 R15: ffff888007932ba0 [ 1488.161722][ T11] FS: 0000000000000000(0000) GS:ffff88802ec00000(0000) knlGS:0000000000000000 [ 1488.162482][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1488.163089][ T11] CR2: 000055f8251e53c8 CR3: 0000000039f1e002 CR4: 00000000001706f0 [ 1488.163808][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1488.164496][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1488.165237][ T11] Call Trace: [ 1488.165544][ T11] [ 1488.165791][ T11] ? __warn (kernel/panic.c:677) [ 1488.166198][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1488.166615][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1488.167103][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1488.167570][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1488.167974][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1488.168361][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1488.168787][ 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) [ 1488.169219][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1488.169660][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1488.170223][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1488.170842][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1488.171258][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1488.171657][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1488.172082][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1488.172509][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1488.172910][ T11] process_one_work (kernel/workqueue.c:2638) [ 1488.173331][ 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) [ 1488.173721][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1488.174171][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1488.174539][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1488.174945][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1488.175401][ T11] kthread (kernel/kthread.c:388) [ 1488.175682][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1488.176050][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1488.176327][ 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