====================================== | [ 47.311126][ T72] ================================================================== | [ 47.311658][ T72] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 47.312052][ T72] Read of size 1 at addr ffff888005d175bc by task kworker/u8:1/72 | [ 47.312462][ T72] [ 47.313005][ T72] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 47.313635][ T72] Workqueue: netns cleanup_net [ 47.313888][ T72] Call Trace: [ 47.314070][ T72] [ 47.314228][ T72] dump_stack_lvl (lib/dump_stack.c:107) [ 47.314472][ T72] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 47.314821][ T72] ? kobject_put (lib/kobject.c:729) [ 47.315059][ T72] print_report (mm/kasan/report.c:489) [ 47.315293][ T72] ? 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) [ 47.315562][ T72] kasan_report (mm/kasan/report.c:603) [ 47.315792][ T72] ? kobject_put (lib/kobject.c:729) [ 47.316032][ T72] kobject_put (lib/kobject.c:729) [ 47.316258][ T72] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 47.316611][ T72] br_dev_delete (net/bridge/br_if.c:396) bridge [ 47.316929][ T72] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 47.317279][ T72] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 47.317512][ T72] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 47.317808][ T72] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 47.318069][ T72] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 47.318321][ T72] ? process_one_work (kernel/workqueue.c:2609) [ 47.318595][ T72] process_one_work (kernel/workqueue.c:2638) [ 47.318857][ T72] ? 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) [ 47.319100][ T72] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 47.319387][ T72] ? assign_work (kernel/workqueue.c:1101) [ 47.319633][ T72] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 47.319877][ T72] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 47.320220][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.320491][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.320762][ T72] kthread (kernel/kthread.c:388) [ 47.320975][ T72] ? __pfx_kthread (kernel/kthread.c:341) [ 47.321221][ T72] ret_from_fork (arch/x86/kernel/process.c:153) [ 47.321453][ T72] ? __pfx_kthread (kernel/kthread.c:341) [ 47.321697][ T72] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 47.340864][ T72] ------------[ cut here ]------------ | [ 47.341246][ T72] refcount_t: underflow; use-after-free. | [ 47.341680][ T72] WARNING: CPU: 0 PID: 72 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 47.342316][ T72] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 47.343630][ T72] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 47.344435][ T72] Workqueue: netns cleanup_net [ 47.344768][ T72] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 47.345322][ T72] 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 93 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 93 loop 0xffffffffffffffb7 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 [ 47.346497][ T72] RSP: 0018:ffffc9000052fb98 EFLAGS: 00010282 [ 47.346984][ T72] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff9130e74f [ 47.347516][ T72] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 47.348057][ T72] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff520000a5f18 [ 47.348557][ T72] R10: ffffc9000052f8c7 R11: 205d323754202020 R12: ffff88800695a000 [ 47.349093][ T72] R13: ffff88800695add8 R14: ffffc9000052fc98 R15: ffff88800695aba0 [ 47.349597][ T72] FS: 0000000000000000(0000) GS:ffff888035200000(0000) knlGS:0000000000000000 [ 47.350138][ T72] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.350593][ T72] CR2: 000055ccde48f928 CR3: 000000001cf1e001 CR4: 00000000001706f0 [ 47.351061][ T72] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.351567][ T72] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.352040][ T72] Call Trace: [ 47.352226][ T72] [ 47.352425][ T72] ? __warn (kernel/panic.c:677) [ 47.352648][ T72] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 47.353017][ T72] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 47.353308][ T72] ? vprintk_emit (kernel/printk/printk.c:2313) [ 47.353624][ T72] ? handle_bug (arch/x86/kernel/traps.c:238) [ 47.353902][ T72] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 47.354236][ T72] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 47.354581][ T72] ? 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) [ 47.354947][ T72] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 47.355338][ T72] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 47.355743][ T72] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 47.356171][ T72] br_dev_delete (net/bridge/br_if.c:396) bridge [ 47.356543][ T72] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 47.356999][ T72] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 47.357310][ T72] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 47.357648][ T72] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 47.357995][ T72] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 47.358320][ T72] ? process_one_work (kernel/workqueue.c:2609) [ 47.358737][ T72] process_one_work (kernel/workqueue.c:2638) [ 47.359082][ T72] ? 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) [ 47.359437][ T72] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 47.359817][ T72] ? assign_work (kernel/workqueue.c:1101) [ 47.360064][ T72] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 47.360408][ T72] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 47.360873][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.361197][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.361493][ T72] kthread (kernel/kthread.c:388) [ 47.361761][ T72] ? __pfx_kthread (kernel/kthread.c:341) [ 47.362106][ T72] ret_from_fork (arch/x86/kernel/process.c:153) [ 47.362474][ T72] ? __pfx_kthread (kernel/kthread.c:341) [ 47.362808][ T72] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 47.366502][ T72] ------------[ cut here ]------------ | [ 47.367020][ T72] sysfs group 'bridge' not found for kobject 'br3' | [ 47.367588][ T72] WARNING: CPU: 3 PID: 72 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 47.368359][ T72] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 47.370017][ T72] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 47.371042][ T72] Workqueue: netns cleanup_net [ 47.371465][ T72] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 47.371937][ T72] 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 93 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 93 mov $0xffffffff93dc99a0,%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 [ 47.373593][ T72] RSP: 0018:ffffc9000052fba0 EFLAGS: 00010282 [ 47.374126][ T72] RAX: 0000000000000000 RBX: ffffffffc0594f00 RCX: ffffffff9130e74f [ 47.374854][ T72] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 47.375534][ T72] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a5f19 [ 47.376223][ T72] R10: ffffc9000052f8cf R11: 205d323754202020 R12: ffff88800695a610 [ 47.376911][ T72] R13: ffff88800695add8 R14: ffffc9000052fc98 R15: ffff88800695aba0 [ 47.377561][ T72] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 47.378302][ T72] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.378847][ T72] CR2: 000055ef3f468968 CR3: 0000000003c2e002 CR4: 00000000001706f0 [ 47.379462][ T72] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.380072][ T72] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.380835][ T72] Call Trace: [ 47.381101][ T72] [ 47.381359][ T72] ? __warn (kernel/panic.c:677) [ 47.381690][ T72] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 47.382117][ T72] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 47.382558][ T72] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 47.382939][ T72] ? handle_bug (arch/x86/kernel/traps.c:238) [ 47.383314][ T72] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 47.383727][ T72] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 47.384159][ T72] ? 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) [ 47.384536][ T72] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 47.384957][ T72] br_dev_delete (net/bridge/br_if.c:396) bridge [ 47.385488][ T72] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 47.386078][ T72] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 47.386451][ T72] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 47.386914][ T72] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 47.387345][ T72] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 47.387755][ T72] ? process_one_work (kernel/workqueue.c:2609) [ 47.388181][ T72] process_one_work (kernel/workqueue.c:2638) [ 47.388581][ T72] ? 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) [ 47.388960][ T72] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 47.389400][ T72] ? assign_work (kernel/workqueue.c:1101) [ 47.389772][ T72] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 47.390169][ T72] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 47.390729][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.391161][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.391601][ T72] kthread (kernel/kthread.c:388) [ 47.391888][ T72] ? __pfx_kthread (kernel/kthread.c:341) [ 47.392261][ T72] ret_from_fork (arch/x86/kernel/process.c:153) [ 47.392610][ T72] ? __pfx_kthread (kernel/kthread.c:341) [ 47.392971][ T72] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 47.602571][ T72] ------------[ cut here ]------------ | [ 47.602886][ T72] sysfs group 'bridge' not found for kobject 'br3' | [ 47.603264][ T72] WARNING: CPU: 2 PID: 72 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 47.603745][ T72] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 47.604964][ T72] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 47.605924][ T72] Workqueue: netns cleanup_net [ 47.606384][ T72] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 47.606747][ T72] 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 93 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 93 mov $0xffffffff93dc99a0,%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 [ 47.608016][ T72] RSP: 0018:ffffc9000052fba0 EFLAGS: 00010282 [ 47.608499][ T72] RAX: 0000000000000000 RBX: ffffffffc0594f00 RCX: ffffffff9130e74f [ 47.608965][ T72] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 47.609437][ T72] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a5f19 [ 47.609911][ T72] R10: ffffc9000052f8cf R11: 205d323754202020 R12: ffff88801e7f2610 [ 47.610475][ T72] R13: ffff88801e7f2dd8 R14: ffffc9000052fc98 R15: ffff88801e7f2ba0 [ 47.610956][ T72] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 47.611541][ T72] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.612005][ T72] CR2: 00007fb20545b270 CR3: 0000000009d96002 CR4: 00000000001706f0 [ 47.612573][ T72] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.613075][ T72] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.613559][ T72] Call Trace: [ 47.613774][ T72] [ 47.613967][ T72] ? __warn (kernel/panic.c:677) [ 47.614252][ T72] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 47.614547][ T72] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 47.614861][ T72] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 47.615136][ T72] ? handle_bug (arch/x86/kernel/traps.c:238) [ 47.615402][ T72] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 47.615709][ T72] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 47.615980][ T72] ? 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) [ 47.616251][ T72] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 47.616597][ T72] br_dev_delete (net/bridge/br_if.c:396) bridge [ 47.616992][ T72] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 47.617412][ T72] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 47.617682][ T72] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 47.617988][ T72] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 47.618285][ T72] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 47.618567][ T72] ? process_one_work (kernel/workqueue.c:2609) [ 47.618877][ T72] process_one_work (kernel/workqueue.c:2638) [ 47.619160][ T72] ? 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) [ 47.619403][ T72] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 47.619727][ T72] ? assign_work (kernel/workqueue.c:1101) [ 47.620006][ T72] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 47.620291][ T72] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 47.620677][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.621061][ T72] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 47.621440][ T72] kthread (kernel/kthread.c:388) [ 47.621682][ T72] ? __pfx_kthread (kernel/kthread.c:341) [ 47.622024][ T72] ret_from_fork (arch/x86/kernel/process.c:153) [ 47.622359][ T72] ? __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