====================================== | [ 289.005718][ T70] ================================================================== | [ 289.006208][ T70] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 289.006616][ T70] Read of size 1 at addr ffff888008dec2fc by task kworker/u8:1/70 | [ 289.007043][ T70] [ 289.007611][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 289.008282][ T70] Workqueue: netns cleanup_net [ 289.008567][ T70] Call Trace: [ 289.008750][ T70] [ 289.008934][ T70] dump_stack_lvl (lib/dump_stack.c:107) [ 289.009196][ T70] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 289.009566][ T70] ? kobject_put (lib/kobject.c:729) [ 289.009818][ T70] print_report (mm/kasan/report.c:489) [ 289.010048][ 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) [ 289.010331][ T70] kasan_report (mm/kasan/report.c:603) [ 289.010611][ T70] ? kobject_put (lib/kobject.c:729) [ 289.010871][ T70] kobject_put (lib/kobject.c:729) [ 289.011124][ T70] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 289.011520][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 289.011833][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 289.012197][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 289.012456][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 289.012760][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 289.013031][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 289.013289][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 289.013618][ T70] process_one_work (kernel/workqueue.c:2638) [ 289.013909][ 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) [ 289.014185][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 289.014509][ T70] ? assign_work (kernel/workqueue.c:1101) [ 289.014769][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 289.015047][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 289.015394][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.015677][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.015969][ T70] kthread (kernel/kthread.c:388) [ 289.016205][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 289.016504][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 289.016764][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 289.017052][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 289.037343][ T70] ------------[ cut here ]------------ | [ 289.037678][ T70] refcount_t: underflow; use-after-free. | [ 289.038078][ T70] WARNING: CPU: 2 PID: 70 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 289.038581][ T70] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 289.039879][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 289.040639][ T70] Workqueue: netns cleanup_net [ 289.040917][ T70] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 289.041242][ 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 c2 ae 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: c2 ae e8 ret $0xe8ae 25: 5e pop %rsi 26: 4c 2b ff sub %rdi,%r15 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 [ 289.042350][ T70] RSP: 0018:ffffc9000050fb98 EFLAGS: 00010282 [ 289.042692][ T70] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffac10e74f [ 289.043159][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 289.043618][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff520000a1f18 [ 289.044050][ T70] R10: ffffc9000050f8c7 R11: 205d303754202020 R12: ffff888009b4a000 [ 289.044535][ T70] R13: ffff888009b4add8 R14: ffffc9000050fc98 R15: ffff888009b4aba0 [ 289.045032][ T70] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 289.045577][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 289.045964][ T70] CR2: 000055cff50b945c CR3: 0000000003ba4001 CR4: 00000000001706f0 [ 289.046461][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 289.046901][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 289.047370][ T70] Call Trace: [ 289.047571][ T70] [ 289.047756][ T70] ? __warn (kernel/panic.c:677) [ 289.048020][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 289.048380][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 289.048649][ T70] ? vprintk_emit (kernel/printk/printk.c:2313) [ 289.048950][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 289.049194][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 289.049467][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 289.049767][ 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) [ 289.050028][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 289.050349][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 289.050669][ T70] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 289.051004][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 289.051338][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 289.051718][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 289.051955][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 289.052300][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 289.052576][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 289.052855][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 289.053163][ T70] process_one_work (kernel/workqueue.c:2638) [ 289.053479][ 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) [ 289.053771][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 289.054094][ T70] ? assign_work (kernel/workqueue.c:1101) [ 289.054345][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 289.054592][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 289.054934][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.055202][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.055474][ T70] kthread (kernel/kthread.c:388) [ 289.055689][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 289.055933][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 289.056166][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 289.056417][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 289.059784][ T70] ------------[ cut here ]------------ | [ 289.060130][ T70] sysfs group 'bridge' not found for kobject 'br2' | [ 289.060642][ T70] WARNING: CPU: 2 PID: 70 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 289.061209][ T70] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 289.062546][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 289.063282][ T70] Workqueue: netns cleanup_net [ 289.063591][ T70] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 289.063944][ 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 bc ae 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 bc ae mov $0xffffffffaebc99a0,%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 [ 289.065212][ T70] RSP: 0018:ffffc9000050fba0 EFLAGS: 00010282 [ 289.065562][ T70] RAX: 0000000000000000 RBX: ffffffffc06eef00 RCX: ffffffffac10e74f [ 289.065993][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 289.066448][ T70] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a1f19 [ 289.066978][ T70] R10: ffffc9000050f8cf R11: 205d303754202020 R12: ffff888009b4a610 [ 289.067435][ T70] R13: ffff888009b4add8 R14: ffffc9000050fc98 R15: ffff888009b4aba0 [ 289.067889][ T70] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 289.068551][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 289.068943][ T70] CR2: 000055cff50b945c CR3: 0000000003ba4001 CR4: 00000000001706f0 [ 289.069464][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 289.069925][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 289.070443][ T70] Call Trace: [ 289.070638][ T70] [ 289.070815][ T70] ? __warn (kernel/panic.c:677) [ 289.071060][ T70] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 289.071368][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 289.071701][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 289.071962][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 289.072255][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 289.072541][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 289.072838][ 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) [ 289.073118][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 289.073435][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 289.073787][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 289.074191][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 289.074562][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 289.074922][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 289.075246][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 289.075548][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 289.075867][ T70] process_one_work (kernel/workqueue.c:2638) [ 289.076159][ 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) [ 289.076419][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 289.076773][ T70] ? assign_work (kernel/workqueue.c:1101) [ 289.077059][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 289.077335][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 289.077724][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.078107][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.078529][ T70] kthread (kernel/kthread.c:388) [ 289.078761][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 289.079032][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 289.079273][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 289.079536][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 289.300839][ T70] ------------[ cut here ]------------ | [ 289.301159][ T70] sysfs group 'bridge' not found for kobject 'br2' | [ 289.301549][ T70] WARNING: CPU: 2 PID: 70 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 289.302052][ T70] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc 8021q vrf veth [ 289.303242][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 289.303939][ T70] Workqueue: netns cleanup_net [ 289.304215][ T70] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 289.304590][ 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 bc ae 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 bc ae mov $0xffffffffaebc99a0,%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 [ 289.305679][ T70] RSP: 0018:ffffc9000050fba0 EFLAGS: 00010282 [ 289.306033][ T70] RAX: 0000000000000000 RBX: ffffffffc06eef00 RCX: ffffffffac10e74f [ 289.306493][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 289.306954][ T70] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a1f19 [ 289.307391][ T70] R10: ffffc9000050f8cf R11: 205d303754202020 R12: ffff888017402610 [ 289.307802][ T70] R13: ffff888017402dd8 R14: ffffc9000050fc98 R15: ffff888017402ba0 [ 289.308229][ T70] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 289.308728][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 289.309112][ T70] CR2: 00007f74920e4270 CR3: 0000000007c54003 CR4: 00000000001706f0 [ 289.309548][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 289.310000][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 289.310415][ T70] Call Trace: [ 289.310590][ T70] [ 289.310749][ T70] ? __warn (kernel/panic.c:677) [ 289.310969][ T70] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 289.311230][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 289.311564][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 289.311830][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 289.312058][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 289.312333][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 289.312613][ 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) [ 289.312866][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 289.313164][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 289.313501][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 289.313857][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 289.314105][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 289.314393][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 289.314654][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 289.314896][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 289.315188][ T70] process_one_work (kernel/workqueue.c:2638) [ 289.315485][ 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) [ 289.315742][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 289.316033][ T70] ? assign_work (kernel/workqueue.c:1101) [ 289.316298][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 289.316563][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 289.316938][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.317230][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 289.317497][ T70] kthread (kernel/kthread.c:388) [ 289.317719][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 289.317996][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 289.318243][ 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