====================================== | [ 1373.892852][ T11] ================================================================== | [ 1373.893319][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 1373.893715][ T11] Read of size 1 at addr ffff888005501bfc by task kworker/u8:0/11 | [ 1373.894154][ T11] [ 1373.894772][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1373.895466][ T11] Workqueue: netns cleanup_net [ 1373.895780][ T11] Call Trace: [ 1373.896006][ T11] [ 1373.896167][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 1373.896452][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 1373.896883][ T11] ? kobject_put (lib/kobject.c:729) [ 1373.897144][ T11] print_report (mm/kasan/report.c:489) [ 1373.897430][ 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) [ 1373.897753][ T11] kasan_report (mm/kasan/report.c:603) [ 1373.898038][ T11] ? kobject_put (lib/kobject.c:729) [ 1373.898328][ T11] kobject_put (lib/kobject.c:729) [ 1373.898568][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1373.898943][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1373.899331][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1373.899739][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1373.900013][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1373.900371][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1373.900663][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1373.900969][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1373.901266][ T11] process_one_work (kernel/workqueue.c:2638) [ 1373.901583][ 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) [ 1373.901880][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1373.902196][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1373.902453][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1373.902730][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1373.903024][ T11] kthread (kernel/kthread.c:388) [ 1373.903294][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1373.903557][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1373.903814][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1373.904087][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1373.924778][ T11] ------------[ cut here ]------------ | [ 1373.925088][ T11] refcount_t: underflow; use-after-free. | [ 1373.925519][ T11] WARNING: CPU: 2 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 1373.926048][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_gact cls_flower sch_ingress 8021q ip_gre gre vrf veth [ 1373.927527][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1373.928333][ T11] Workqueue: netns cleanup_net [ 1373.928612][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1373.928970][ 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 22 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: 22 87 e8 5e 4c 2b and 0x2b4c5ee8(%rdi),%al 28:* ff 90 0f 0b 90 90 call *-0x6f6ff4f1(%rax) <-- trapping instruction 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 [ 1373.930112][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 1373.930470][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8470e74f [ 1373.930926][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1373.931356][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 1373.931835][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff88800819a000 [ 1373.932301][ T11] R13: ffff88800819add8 R14: ffffc900000bfc98 R15: ffff88800819aba0 [ 1373.932776][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 1373.933307][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1373.933695][ T11] CR2: 00007f01d1bedfe0 CR3: 000000001ff1e004 CR4: 00000000001706f0 [ 1373.934147][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1373.934639][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1373.935129][ T11] Call Trace: [ 1373.935308][ T11] [ 1373.935468][ T11] ? __warn (kernel/panic.c:677) [ 1373.935691][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1373.936023][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1373.936366][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 1373.936661][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1373.936926][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1373.937226][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1373.937528][ 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) [ 1373.937796][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1373.938133][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1373.938453][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1373.938833][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1373.939201][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1373.939606][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1373.939894][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1373.940260][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1373.940601][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1373.940877][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1373.941194][ T11] process_one_work (kernel/workqueue.c:2638) [ 1373.941492][ 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) [ 1373.941779][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1373.942111][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1373.942432][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1373.942735][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1373.943047][ T11] kthread (kernel/kthread.c:388) [ 1373.943288][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1373.943570][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1373.943830][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1373.944084][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1373.947642][ T11] ------------[ cut here ]------------ | [ 1373.947980][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1373.948398][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1373.948985][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_gact cls_flower sch_ingress 8021q ip_gre gre vrf veth [ 1373.950335][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1373.951042][ T11] Workqueue: netns cleanup_net [ 1373.951425][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1373.951765][ 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 1c 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 1c 87 mov $0xffffffff871c99a0,%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 [ 1373.952880][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1373.953252][ T11] RAX: 0000000000000000 RBX: ffffffffc03b6f00 RCX: ffffffff8470e74f [ 1373.953712][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1373.954174][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1373.954596][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800819a610 [ 1373.955064][ T11] R13: ffff88800819add8 R14: ffffc900000bfc98 R15: ffff88800819aba0 [ 1373.955523][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 1373.956078][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1373.956462][ T11] CR2: 00007f01d1bedfe0 CR3: 000000001ff1e004 CR4: 00000000001706f0 [ 1373.956960][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1373.957391][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1373.957860][ T11] Call Trace: [ 1373.958067][ T11] [ 1373.958330][ T11] ? __warn (kernel/panic.c:677) [ 1373.958560][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1373.958863][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1373.959192][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1373.959459][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1373.959709][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1373.960005][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1373.960355][ 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) [ 1373.960641][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1373.960947][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1373.961315][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1373.961741][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1373.962021][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1373.962384][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1373.962722][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1373.963029][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1373.963347][ T11] process_one_work (kernel/workqueue.c:2638) [ 1373.963690][ 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) [ 1373.963951][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1373.964400][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1373.964719][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1373.964991][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1373.965292][ T11] kthread (kernel/kthread.c:388) [ 1373.965560][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1373.965864][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1373.966159][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1373.966437][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1374.189925][ T11] ------------[ cut here ]------------ | [ 1374.190825][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1374.191310][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1374.191856][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_gact cls_flower sch_ingress 8021q ip_gre gre vrf veth [ 1374.193575][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1374.194484][ T11] Workqueue: netns cleanup_net [ 1374.194818][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1374.195343][ 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 1c 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 1c 87 mov $0xffffffff871c99a0,%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 [ 1374.196637][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1374.197074][ T11] RAX: 0000000000000000 RBX: ffffffffc03b6f00 RCX: ffffffff8470e74f [ 1374.197684][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1374.198275][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1374.198806][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880081d2610 [ 1374.199299][ T11] R13: ffff8880081d2dd8 R14: ffffc900000bfc98 R15: ffff8880081d2ba0 [ 1374.199770][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 1374.200284][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1374.200701][ T11] CR2: 00007fcacd11da74 CR3: 000000000b234001 CR4: 00000000001706f0 [ 1374.201175][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1374.201719][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1374.202250][ T11] Call Trace: [ 1374.202468][ T11] [ 1374.202645][ T11] ? __warn (kernel/panic.c:677) [ 1374.202993][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1374.203327][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1374.203653][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1374.203937][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1374.204245][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1374.204532][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1374.204842][ 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) [ 1374.205138][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1374.205422][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1374.205836][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1374.206239][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1374.206532][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1374.206866][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1374.207161][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1374.207474][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1374.207773][ T11] process_one_work (kernel/workqueue.c:2638) [ 1374.208072][ 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) [ 1374.208368][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1374.208718][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1374.209144][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1374.209489][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1374.209844][ T11] kthread (kernel/kthread.c:388) [ 1374.210099][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1374.210385][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1374.210791][ 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