====================================== | [ 45.405646][ T70] ================================================================== | [ 45.406184][ T70] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 45.406607][ T70] Read of size 1 at addr ffff888008b155bc by task kworker/u8:1/70 | [ 45.407104][ T70] [ 45.407659][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.408317][ T70] Workqueue: netns cleanup_net [ 45.408580][ T70] Call Trace: [ 45.408769][ T70] [ 45.408952][ T70] dump_stack_lvl (lib/dump_stack.c:107) [ 45.409203][ T70] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 45.409595][ T70] ? kobject_put (lib/kobject.c:729) [ 45.409900][ T70] print_report (mm/kasan/report.c:489) [ 45.410248][ T70] ? 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) [ 45.410596][ T70] kasan_report (mm/kasan/report.c:603) [ 45.410872][ T70] ? kobject_put (lib/kobject.c:729) [ 45.411127][ T70] kobject_put (lib/kobject.c:729) [ 45.411390][ T70] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 45.411843][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.412261][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.412665][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.412963][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.413345][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.413631][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.413944][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 45.414225][ T70] process_one_work (kernel/workqueue.c:2638) [ 45.414551][ T70] ? 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) [ 45.414876][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.415229][ T70] ? assign_work (kernel/workqueue.c:1101) [ 45.415514][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.415883][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.416342][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.416668][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.417015][ T70] kthread (kernel/kthread.c:388) [ 45.417296][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 45.417563][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.417844][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 45.418092][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.439299][ T70] ------------[ cut here ]------------ | [ 45.439600][ T70] refcount_t: underflow; use-after-free. | [ 45.440016][ T70] WARNING: CPU: 3 PID: 70 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 45.440556][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 45.442006][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.442769][ T70] Workqueue: netns cleanup_net [ 45.443094][ T70] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.443457][ T70] 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 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: e2 87 loop 0xffffffffffffffab 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 [ 45.444571][ T70] RSP: 0018:ffffc9000050fb98 EFLAGS: 00010282 [ 45.444940][ T70] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8530e74f [ 45.445417][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 45.445903][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff520000a1f18 [ 45.446332][ T70] R10: ffffc9000050f8c7 R11: 205d303754202020 R12: ffff8880088ea000 [ 45.446766][ T70] R13: ffff8880088eadd8 R14: ffffc9000050fc98 R15: ffff8880088eaba0 [ 45.447234][ T70] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 45.447757][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.448143][ T70] CR2: 00005563de776928 CR3: 000000001691e005 CR4: 00000000001706f0 [ 45.448697][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.449251][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.449793][ T70] Call Trace: [ 45.450013][ T70] [ 45.450174][ T70] ? __warn (kernel/panic.c:677) [ 45.450456][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.450860][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.451192][ T70] ? vprintk_emit (kernel/printk/printk.c:2313) [ 45.451522][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.451846][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.452123][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.452461][ T70] ? 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) [ 45.452820][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.453158][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.453512][ T70] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 45.453894][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.454266][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.454735][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.455028][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.455396][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.455768][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.456067][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 45.456462][ T70] process_one_work (kernel/workqueue.c:2638) [ 45.456792][ T70] ? 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) [ 45.457076][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.457425][ T70] ? assign_work (kernel/workqueue.c:1101) [ 45.457802][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.458091][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.458521][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.458805][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.459092][ T70] kthread (kernel/kthread.c:388) [ 45.459314][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 45.459559][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.459809][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 45.460063][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.463804][ T70] ------------[ cut here ]------------ | [ 45.464191][ T70] sysfs group 'bridge' not found for kobject 'br3' | [ 45.464619][ T70] WARNING: CPU: 3 PID: 70 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 45.465224][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 45.466568][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.467352][ T70] Workqueue: netns cleanup_net [ 45.467638][ T70] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.468031][ T70] 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 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 dc 87 mov $0xffffffff87dc99a0,%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 [ 45.469196][ T70] RSP: 0018:ffffc9000050fba0 EFLAGS: 00010282 [ 45.469576][ T70] RAX: 0000000000000000 RBX: ffffffffc047bf00 RCX: ffffffff8530e74f [ 45.470171][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 45.470655][ T70] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a1f19 [ 45.471302][ T70] R10: ffffc9000050f8cf R11: 205d303754202020 R12: ffff8880088ea610 [ 45.471767][ T70] R13: ffff8880088eadd8 R14: ffffc9000050fc98 R15: ffff8880088eaba0 [ 45.472235][ T70] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 45.472748][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.473100][ T70] CR2: 00005563de776928 CR3: 000000001691e005 CR4: 00000000001706f0 [ 45.473518][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.473982][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.474451][ T70] Call Trace: [ 45.474650][ T70] [ 45.474854][ T70] ? __warn (kernel/panic.c:677) [ 45.475096][ T70] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 45.475386][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.475736][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.476038][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.476292][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.476560][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.476868][ T70] ? 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) [ 45.477121][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.477400][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.477842][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.478341][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.478608][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.479010][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.479299][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.479569][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 45.479892][ T70] process_one_work (kernel/workqueue.c:2638) [ 45.480162][ T70] ? 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) [ 45.480411][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.480744][ T70] ? assign_work (kernel/workqueue.c:1101) [ 45.481021][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.481306][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.481708][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.482099][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.482390][ T70] kthread (kernel/kthread.c:388) [ 45.482635][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 45.482959][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.483199][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 45.483471][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.666766][ T70] ------------[ cut here ]------------ | [ 45.667237][ T70] sysfs group 'bridge' not found for kobject 'br3' | [ 45.667713][ T70] WARNING: CPU: 1 PID: 70 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 45.668236][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 45.669356][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.670007][ T70] Workqueue: netns cleanup_net [ 45.670270][ T70] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.670597][ T70] 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 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 dc 87 mov $0xffffffff87dc99a0,%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 [ 45.671642][ T70] RSP: 0018:ffffc9000050fba0 EFLAGS: 00010282 [ 45.671991][ T70] RAX: 0000000000000000 RBX: ffffffffc047bf00 RCX: ffffffff8530e74f [ 45.672519][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 45.673017][ T70] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a1f19 [ 45.673574][ T70] R10: ffffc9000050f8cf R11: 205d303754202020 R12: ffff888008242610 [ 45.674180][ T70] R13: ffff888008242dd8 R14: ffffc9000050fc98 R15: ffff888008242ba0 [ 45.674678][ T70] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 45.675238][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.675694][ T70] CR2: 00005563de40adec CR3: 0000000007c52001 CR4: 00000000001706f0 [ 45.676272][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.676740][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.677230][ T70] Call Trace: [ 45.677433][ T70] [ 45.677640][ T70] ? __warn (kernel/panic.c:677) [ 45.677900][ T70] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 45.678241][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.678598][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.678909][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.679183][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.679452][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.679750][ T70] ? 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) [ 45.680038][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.680350][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.680731][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.681148][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.681478][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.681776][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.682078][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.682372][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 45.682681][ T70] process_one_work (kernel/workqueue.c:2638) [ 45.683125][ T70] ? 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) [ 45.683409][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.683770][ T70] ? assign_work (kernel/workqueue.c:1101) [ 45.684065][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.684365][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.684741][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.685099][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.685390][ T70] kthread (kernel/kthread.c:388) [ 45.685627][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 45.685903][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.686204][ T70] ? __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