====================================== | [ 1369.035397][ T11] ================================================================== | [ 1369.035863][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 1369.036269][ T11] Read of size 1 at addr ffff8880029d41bc by task kworker/u8:0/11 | [ 1369.036684][ T11] [ 1369.037242][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1369.037903][ T11] Workqueue: netns cleanup_net [ 1369.038169][ T11] Call Trace: [ 1369.038348][ T11] [ 1369.038509][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 1369.038759][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 1369.039117][ T11] ? kobject_put (lib/kobject.c:729) [ 1369.039360][ T11] print_report (mm/kasan/report.c:489) [ 1369.039601][ 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) [ 1369.039888][ T11] kasan_report (mm/kasan/report.c:603) [ 1369.040125][ T11] ? kobject_put (lib/kobject.c:729) [ 1369.040390][ T11] kobject_put (lib/kobject.c:729) [ 1369.040620][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1369.040987][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1369.041318][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1369.041677][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1369.041916][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1369.042223][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1369.042489][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1369.042744][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1369.043025][ T11] process_one_work (kernel/workqueue.c:2638) [ 1369.043293][ 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) [ 1369.043543][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1369.043844][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1369.044111][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1369.044371][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1369.044649][ T11] kthread (kernel/kthread.c:388) [ 1369.044877][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1369.045130][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1369.045375][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1369.045628][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1369.065343][ T11] ------------[ cut here ]------------ | [ 1369.065708][ T11] refcount_t: underflow; use-after-free. | [ 1369.066110][ T11] WARNING: CPU: 0 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 1369.066674][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_gact cls_flower sch_ingress 8021q ip6_gre ip6_tunnel tunnel6 gre vrf veth [ 1369.068164][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1369.068865][ T11] Workqueue: netns cleanup_net [ 1369.069186][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1369.069558][ 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 a2 b7 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: a2 b7 e8 5e 4c 2b ff movabs %al,0xf90ff2b4c5ee8b7 29:* 90 0f <-- trapping instruction 2b: 0b 90 90 e9 2f ff or -0xd01670(%rax),%edx 31: ff (bad) 32: ff 48 89 decl -0x77(%rax) 35: df e8 fucomip %st(0),%st 37: 7c 23 jl 0x5c 39: a7 cmpsl %es:(%rdi),%ds:(%rsi) 3a: ff (bad) 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 [ 1369.070638][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 1369.071035][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb4f0e74f [ 1369.071525][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1369.072019][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 1369.072504][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff888009d32000 [ 1369.073014][ T11] R13: ffff888009d32dd8 R14: ffffc900000bfc98 R15: ffff888009d32ba0 [ 1369.073499][ T11] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 1369.074019][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1369.074425][ T11] CR2: 0000562aae418dec CR3: 0000000009190002 CR4: 00000000001706f0 [ 1369.074856][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1369.075290][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1369.075713][ T11] Call Trace: [ 1369.075896][ T11] [ 1369.076063][ T11] ? __warn (kernel/panic.c:677) [ 1369.076337][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1369.076704][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1369.077020][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 1369.077362][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1369.077683][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1369.078028][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1369.078360][ 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) [ 1369.078689][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1369.079063][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1369.079397][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1369.079807][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1369.080185][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1369.080617][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1369.080927][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1369.081304][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1369.081644][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1369.082002][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1369.082345][ T11] process_one_work (kernel/workqueue.c:2638) [ 1369.082675][ 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) [ 1369.082981][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1369.083270][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1369.083572][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1369.083870][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1369.084221][ T11] kthread (kernel/kthread.c:388) [ 1369.084502][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1369.084827][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1369.085157][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1369.085470][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1369.089155][ T11] ------------[ cut here ]------------ | [ 1369.089483][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1369.089928][ T11] WARNING: CPU: 0 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1369.090447][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_gact cls_flower sch_ingress 8021q ip6_gre ip6_tunnel tunnel6 gre vrf veth [ 1369.092479][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1369.093287][ T11] Workqueue: netns cleanup_net [ 1369.093676][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1369.094111][ 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 9c b7 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 9c b7 mov $0xffffffffb79c99a0,%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 [ 1369.095284][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1369.095710][ T11] RAX: 0000000000000000 RBX: ffffffffc0719f00 RCX: ffffffffb4f0e74f [ 1369.096195][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1369.096697][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1369.097188][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009d32610 [ 1369.097623][ T11] R13: ffff888009d32dd8 R14: ffffc900000bfc98 R15: ffff888009d32ba0 [ 1369.098053][ T11] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 1369.098526][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1369.098875][ T11] CR2: 0000562aae418dec CR3: 0000000009190002 CR4: 00000000001706f0 [ 1369.099361][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1369.099852][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1369.100323][ T11] Call Trace: [ 1369.100560][ T11] [ 1369.100760][ T11] ? __warn (kernel/panic.c:677) [ 1369.101058][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1369.101377][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1369.101730][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1369.102038][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1369.102340][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1369.102668][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1369.102991][ 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) [ 1369.103290][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1369.103641][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1369.104033][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1369.104457][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1369.104755][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1369.105140][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1369.105466][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1369.105787][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1369.106150][ T11] process_one_work (kernel/workqueue.c:2638) [ 1369.106456][ 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) [ 1369.106759][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1369.107086][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1369.107381][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1369.107692][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1369.108021][ T11] kthread (kernel/kthread.c:388) [ 1369.108309][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1369.108640][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1369.108974][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1369.109280][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1369.324712][ T11] ------------[ cut here ]------------ | [ 1369.325036][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1369.325435][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1369.325973][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_gact cls_flower sch_ingress 8021q ip6_gre ip6_tunnel tunnel6 gre vrf veth [ 1369.327290][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1369.327954][ T11] Workqueue: netns cleanup_net [ 1369.328242][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1369.328636][ 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 9c b7 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 9c b7 mov $0xffffffffb79c99a0,%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 [ 1369.329775][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1369.330132][ T11] RAX: 0000000000000000 RBX: ffffffffc0719f00 RCX: ffffffffb4f0e74f [ 1369.330592][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1369.331032][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1369.331512][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a63a610 [ 1369.332010][ T11] R13: ffff88800a63add8 R14: ffffc900000bfc98 R15: ffff88800a63aba0 [ 1369.332441][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 1369.332965][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1369.333418][ T11] CR2: 00007ff204a01270 CR3: 000000001a71e006 CR4: 00000000001706f0 [ 1369.333878][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1369.334409][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1369.334904][ T11] Call Trace: [ 1369.335112][ T11] [ 1369.335274][ T11] ? __warn (kernel/panic.c:677) [ 1369.335526][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1369.335837][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1369.336156][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1369.336402][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1369.336664][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1369.336991][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1369.337344][ 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) [ 1369.337634][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1369.337936][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1369.338322][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1369.338738][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1369.339005][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1369.339272][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1369.339556][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1369.339831][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1369.340187][ T11] process_one_work (kernel/workqueue.c:2638) [ 1369.340471][ 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) [ 1369.340729][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1369.341068][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1369.341414][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1369.341710][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1369.342049][ T11] kthread (kernel/kthread.c:388) [ 1369.342292][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1369.342559][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1369.342822][ 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