====================================== | [ 1359.360048][ T11] ================================================================== | [ 1359.360532][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 1359.360936][ T11] Read of size 1 at addr ffff88800b2d4f7c by task kworker/u8:0/11 | [ 1359.361353][ T11] [ 1359.361922][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1359.362587][ T11] Workqueue: netns cleanup_net [ 1359.362860][ T11] Call Trace: [ 1359.363043][ T11] [ 1359.363205][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 1359.363455][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 1359.363822][ T11] ? kobject_put (lib/kobject.c:729) [ 1359.364064][ T11] print_report (mm/kasan/report.c:489) [ 1359.364305][ 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) [ 1359.364579][ T11] kasan_report (mm/kasan/report.c:603) [ 1359.364814][ T11] ? kobject_put (lib/kobject.c:729) [ 1359.365057][ T11] kobject_put (lib/kobject.c:729) [ 1359.365295][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1359.365665][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1359.365993][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1359.366361][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1359.366605][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1359.366921][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1359.367190][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1359.367442][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1359.367719][ T11] process_one_work (kernel/workqueue.c:2638) [ 1359.367989][ 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) [ 1359.368234][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1359.368519][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1359.368766][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1359.369026][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1359.369304][ T11] kthread (kernel/kthread.c:388) [ 1359.369521][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1359.369771][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1359.370011][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1359.370264][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1359.390135][ T11] ------------[ cut here ]------------ | [ 1359.390493][ T11] refcount_t: underflow; use-after-free. | [ 1359.390867][ T11] WARNING: CPU: 0 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 1359.391371][ 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 [ 1359.392758][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1359.393503][ T11] Workqueue: netns cleanup_net [ 1359.393834][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1359.394271][ 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 82 a6 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: 82 (bad) 23: a6 cmpsb %es:(%rdi),%ds:(%rsi) 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 [ 1359.395416][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 1359.395934][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa3d0e74f [ 1359.396436][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1359.396936][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 1359.397431][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff88800a4ea000 [ 1359.397900][ T11] R13: ffff88800a4eadd8 R14: ffffc900000bfc98 R15: ffff88800a4eaba0 [ 1359.398383][ T11] FS: 0000000000000000(0000) GS:ffff88802e400000(0000) knlGS:0000000000000000 [ 1359.398931][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1359.399360][ T11] CR2: 000055851b595f68 CR3: 0000000032f1e002 CR4: 00000000001706f0 [ 1359.399853][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1359.400405][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1359.400927][ T11] Call Trace: [ 1359.401181][ T11] [ 1359.401429][ T11] ? __warn (kernel/panic.c:677) [ 1359.401720][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1359.402019][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1359.402275][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 1359.402595][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1359.402921][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1359.403285][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1359.403589][ 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) [ 1359.403842][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1359.404143][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1359.404510][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1359.404842][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1359.405163][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1359.405536][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1359.405789][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1359.406091][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1359.406369][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1359.406621][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1359.406896][ T11] process_one_work (kernel/workqueue.c:2638) [ 1359.407167][ 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) [ 1359.407423][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1359.407712][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1359.407960][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1359.408227][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1359.408563][ T11] kthread (kernel/kthread.c:388) [ 1359.408841][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1359.409188][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1359.409490][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1359.409794][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1359.413370][ T11] ------------[ cut here ]------------ | [ 1359.413730][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1359.414229][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1359.414839][ 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 [ 1359.416417][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1359.417171][ T11] Workqueue: netns cleanup_net [ 1359.417496][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1359.417908][ 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 7c a6 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 7c a6 mov $0xffffffffa67c99a0,%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 [ 1359.419015][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1359.419437][ T11] RAX: 0000000000000000 RBX: ffffffffc03fcf00 RCX: ffffffffa3d0e74f [ 1359.420000][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1359.420514][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1359.421005][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a4ea610 [ 1359.421495][ T11] R13: ffff88800a4eadd8 R14: ffffc900000bfc98 R15: ffff88800a4eaba0 [ 1359.421916][ T11] FS: 0000000000000000(0000) GS:ffff88802e400000(0000) knlGS:0000000000000000 [ 1359.422441][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1359.422854][ T11] CR2: 000055851b595f68 CR3: 0000000032f1e002 CR4: 00000000001706f0 [ 1359.423338][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1359.423825][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1359.424334][ T11] Call Trace: [ 1359.424557][ T11] [ 1359.424804][ T11] ? __warn (kernel/panic.c:677) [ 1359.425113][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1359.425443][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1359.425689][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1359.425950][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1359.426283][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1359.426558][ 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) [ 1359.426799][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1359.427165][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1359.427671][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1359.428121][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1359.428440][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1359.428827][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1359.429224][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1359.429534][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1359.429896][ T11] process_one_work (kernel/workqueue.c:2638) [ 1359.430324][ 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) [ 1359.430618][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1359.430959][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1359.431316][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1359.431641][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1359.432013][ T11] kthread (kernel/kthread.c:388) [ 1359.432316][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1359.432613][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1359.432923][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1359.433232][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1359.665480][ T11] ------------[ cut here ]------------ | [ 1359.665822][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1359.666273][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1359.666891][ 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 [ 1359.668335][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1359.669163][ T11] Workqueue: netns cleanup_net [ 1359.669487][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1359.669841][ 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 7c a6 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 7c a6 mov $0xffffffffa67c99a0,%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 [ 1359.671042][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1359.671375][ T11] RAX: 0000000000000000 RBX: ffffffffc03fcf00 RCX: ffffffffa3d0e74f [ 1359.671783][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1359.672205][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1359.672678][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800967a610 [ 1359.673143][ T11] R13: ffff88800967add8 R14: ffffc900000bfc98 R15: ffff88800967aba0 [ 1359.673661][ T11] FS: 0000000000000000(0000) GS:ffff88802f000000(0000) knlGS:0000000000000000 [ 1359.674184][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1359.674568][ T11] CR2: 00007f5ed704c2a8 CR3: 0000000032f1e002 CR4: 00000000001706f0 [ 1359.675107][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1359.675569][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1359.676037][ T11] Call Trace: [ 1359.676274][ T11] [ 1359.676450][ T11] ? __warn (kernel/panic.c:677) [ 1359.676680][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1359.676988][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1359.677296][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1359.677570][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1359.677857][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1359.678161][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1359.678474][ 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) [ 1359.678709][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1359.679025][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1359.679442][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1359.679822][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1359.680088][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1359.680426][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1359.680741][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1359.681026][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1359.681342][ T11] process_one_work (kernel/workqueue.c:2638) [ 1359.681703][ 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) [ 1359.681993][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1359.682321][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1359.682626][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1359.682906][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1359.683259][ T11] kthread (kernel/kthread.c:388) [ 1359.683515][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1359.683786][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1359.684023][ 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