====================================== | [ 1570.255705][ T11] ================================================================== | [ 1570.256163][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 1570.256661][ T11] Read of size 1 at addr ffff88800350933c by task kworker/u8:0/11 | [ 1570.257127][ T11] [ 1570.257680][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1570.258487][ T11] Workqueue: netns cleanup_net [ 1570.258819][ T11] Call Trace: [ 1570.259060][ T11] [ 1570.259253][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 1570.259607][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 1570.260014][ T11] ? kobject_put (lib/kobject.c:729) [ 1570.260293][ T11] print_report (mm/kasan/report.c:489) [ 1570.260574][ 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) [ 1570.260854][ T11] kasan_report (mm/kasan/report.c:603) [ 1570.261160][ T11] ? kobject_put (lib/kobject.c:729) [ 1570.261414][ T11] kobject_put (lib/kobject.c:729) [ 1570.261692][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1570.262147][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1570.262520][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1570.262904][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1570.263160][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1570.263530][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1570.263821][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1570.264087][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1570.264396][ T11] process_one_work (kernel/workqueue.c:2638) [ 1570.264793][ 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) [ 1570.265073][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1570.265399][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1570.265722][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1570.266023][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1570.266371][ T11] kthread (kernel/kthread.c:388) [ 1570.266639][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1570.266920][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1570.267237][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1570.267509][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1570.289666][ T11] ------------[ cut here ]------------ | [ 1570.289988][ T11] refcount_t: underflow; use-after-free. | [ 1570.290406][ T11] WARNING: CPU: 3 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 1570.290934][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 1570.292237][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1570.293027][ T11] Workqueue: netns cleanup_net [ 1570.293352][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1570.293690][ 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 91 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 91 e8 5e 4c 2b and 0x2b4c5ee8(%rcx),%dl 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 [ 1570.294850][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 1570.295244][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8e70e74f [ 1570.295750][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1570.296245][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 1570.296698][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff88800afea000 [ 1570.297285][ T11] R13: ffff88800afeadd8 R14: ffffc900000bfc98 R15: ffff88800afeaba0 [ 1570.297770][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 1570.298393][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1570.298826][ T11] CR2: 00007f3021d37000 CR3: 000000001a11e005 CR4: 00000000001706f0 [ 1570.299250][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1570.299705][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1570.300299][ T11] Call Trace: [ 1570.300512][ T11] [ 1570.300701][ T11] ? __warn (kernel/panic.c:677) [ 1570.300993][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1570.301310][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1570.301564][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 1570.301853][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1570.302087][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1570.302336][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1570.302626][ 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) [ 1570.302879][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1570.303183][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1570.303476][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1570.303804][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1570.304148][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1570.304534][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1570.304819][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1570.305247][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1570.305548][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1570.305872][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1570.306215][ T11] process_one_work (kernel/workqueue.c:2638) [ 1570.306493][ 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) [ 1570.306742][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1570.307190][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1570.307498][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1570.307788][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1570.308227][ T11] kthread (kernel/kthread.c:388) [ 1570.308467][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1570.308778][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1570.309038][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1570.309285][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1570.312898][ T11] ------------[ cut here ]------------ | [ 1570.313217][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1570.313639][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1570.314197][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 1570.315672][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1570.316527][ T11] Workqueue: netns cleanup_net [ 1570.316832][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1570.317205][ 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 91 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 91 mov $0xffffffff911c99a0,%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 [ 1570.318271][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1570.318612][ T11] RAX: 0000000000000000 RBX: ffffffffc061df00 RCX: ffffffff8e70e74f [ 1570.319039][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1570.319471][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1570.319989][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800afea610 [ 1570.320494][ T11] R13: ffff88800afeadd8 R14: ffffc900000bfc98 R15: ffff88800afeaba0 [ 1570.320960][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 1570.321510][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1570.321893][ T11] CR2: 00007f3021d37000 CR3: 000000001a11e005 CR4: 00000000001706f0 [ 1570.322365][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1570.322861][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1570.323343][ T11] Call Trace: [ 1570.323524][ T11] [ 1570.323706][ T11] ? __warn (kernel/panic.c:677) [ 1570.323967][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1570.324287][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1570.324625][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1570.324895][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1570.325169][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1570.325501][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1570.325792][ 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) [ 1570.326061][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1570.326449][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1570.326809][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1570.327226][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1570.327510][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1570.327863][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1570.328252][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1570.328568][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1570.328893][ T11] process_one_work (kernel/workqueue.c:2638) [ 1570.329266][ 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) [ 1570.329516][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1570.329945][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1570.330221][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1570.330486][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1570.330807][ T11] kthread (kernel/kthread.c:388) [ 1570.331121][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1570.331409][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1570.331676][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1570.331950][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1570.506678][ T11] ------------[ cut here ]------------ | [ 1570.507069][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1570.507451][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1570.507997][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 1570.509404][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1570.510164][ T11] Workqueue: netns cleanup_net [ 1570.510496][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1570.510890][ 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 91 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 91 mov $0xffffffff911c99a0,%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 [ 1570.512042][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1570.512364][ T11] RAX: 0000000000000000 RBX: ffffffffc061df00 RCX: ffffffff8e70e74f [ 1570.512786][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1570.513299][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1570.513809][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800ae3a610 [ 1570.514341][ T11] R13: ffff88800ae3add8 R14: ffffc900000bfc98 R15: ffff88800ae3aba0 [ 1570.514822][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 1570.515361][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1570.515735][ T11] CR2: 00007fbf50df9270 CR3: 0000000009c9a005 CR4: 00000000001706f0 [ 1570.516261][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1570.516731][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1570.517222][ T11] Call Trace: [ 1570.517402][ T11] [ 1570.517573][ T11] ? __warn (kernel/panic.c:677) [ 1570.517874][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1570.518200][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1570.518517][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1570.518807][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1570.519102][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1570.519382][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1570.519711][ 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) [ 1570.519986][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1570.520310][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1570.520699][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1570.521147][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1570.521517][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1570.521836][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1570.522229][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1570.522519][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1570.522825][ T11] process_one_work (kernel/workqueue.c:2638) [ 1570.523140][ 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) [ 1570.523470][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1570.523782][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1570.524144][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1570.524430][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1570.524744][ T11] kthread (kernel/kthread.c:388) [ 1570.524990][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1570.525274][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1570.525557][ 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