====================================== | [ 178.776450][ T11] ================================================================== | [ 178.776994][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 178.777445][ T11] Read of size 1 at addr ffff8880030d147c by task kworker/u8:0/11 | [ 178.777919][ T11] [ 178.778470][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 178.779192][ T11] Workqueue: netns cleanup_net [ 178.779503][ T11] Call Trace: [ 178.779712][ T11] [ 178.779872][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 178.780214][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 178.780625][ T11] ? kobject_put (lib/kobject.c:729) [ 178.780864][ T11] print_report (mm/kasan/report.c:489) [ 178.781179][ 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) [ 178.781452][ T11] kasan_report (mm/kasan/report.c:603) [ 178.781700][ T11] ? kobject_put (lib/kobject.c:729) [ 178.781938][ T11] kobject_put (lib/kobject.c:729) [ 178.782196][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 178.782564][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 178.782918][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 178.783336][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 178.783595][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 178.783938][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 178.784277][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 178.784550][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 178.784866][ T11] process_one_work (kernel/workqueue.c:2638) [ 178.785181][ 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) [ 178.785430][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 178.785718][ T11] ? assign_work (kernel/workqueue.c:1101) [ 178.785986][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 178.786270][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 178.786588][ T11] kthread (kernel/kthread.c:388) [ 178.786833][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 178.787126][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 178.787459][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 178.787736][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 178.809467][ T11] ------------[ cut here ]------------ | [ 178.809804][ T11] refcount_t: underflow; use-after-free. | [ 178.810191][ T11] WARNING: CPU: 1 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 178.810804][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc macvlan vrf veth [ 178.812233][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 178.812943][ T11] Workqueue: netns cleanup_net [ 178.813233][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 178.813611][ 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 62 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: 62 (bad) 23: 87 e8 xchg %ebp,%eax 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 [ 178.814745][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 178.815102][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff84b0e74f [ 178.815603][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 178.816161][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 178.816656][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff888028f02000 [ 178.817160][ T11] R13: ffff888028f02dd8 R14: ffffc900000bfc98 R15: ffff888028f02ba0 [ 178.817596][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 178.818154][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 178.818514][ T11] CR2: 000055e377184078 CR3: 000000002751e004 CR4: 00000000001706f0 [ 178.819287][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 178.819725][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 178.820194][ T11] Call Trace: [ 178.820420][ T11] [ 178.820592][ T11] ? __warn (kernel/panic.c:677) [ 178.820823][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 178.821147][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 178.821423][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 178.821733][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 178.822014][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 178.822319][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 178.822602][ 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) [ 178.822859][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 178.823330][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 178.823678][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 178.824057][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 178.824447][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 178.824845][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 178.825167][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 178.825465][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 178.825757][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 178.826036][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 178.826348][ T11] process_one_work (kernel/workqueue.c:2638) [ 178.826629][ 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) [ 178.826904][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 178.827251][ T11] ? assign_work (kernel/workqueue.c:1101) [ 178.827550][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 178.827858][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 178.828178][ T11] kthread (kernel/kthread.c:388) [ 178.828417][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 178.828659][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 178.828926][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 178.829238][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 178.832418][ T11] ------------[ cut here ]------------ | [ 178.832701][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 178.833072][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 178.833617][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc macvlan vrf veth [ 178.835030][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 178.835739][ T11] Workqueue: netns cleanup_net [ 178.836055][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 178.836374][ 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 5c 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 5c 87 mov $0xffffffff875c99a0,%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 [ 178.837520][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 178.837872][ T11] RAX: 0000000000000000 RBX: ffffffffc0597f00 RCX: ffffffff84b0e74f [ 178.838291][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 178.838763][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 178.839210][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888028f02610 [ 178.839660][ T11] R13: ffff888028f02dd8 R14: ffffc900000bfc98 R15: ffff888028f02ba0 [ 178.840150][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 178.840671][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 178.841014][ T11] CR2: 000055e377184078 CR3: 000000002751e004 CR4: 00000000001706f0 [ 178.841439][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 178.841858][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 178.842282][ T11] Call Trace: [ 178.842492][ T11] [ 178.842654][ T11] ? __warn (kernel/panic.c:677) [ 178.842872][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 178.843130][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 178.843416][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 178.843663][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 178.843901][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 178.844251][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 178.844534][ 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) [ 178.844822][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 178.845103][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 178.845442][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 178.845798][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 178.846066][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 178.846404][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 178.846675][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 178.846932][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 178.847225][ T11] process_one_work (kernel/workqueue.c:2638) [ 178.847517][ 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) [ 178.847790][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 178.848114][ T11] ? assign_work (kernel/workqueue.c:1101) [ 178.848459][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 178.848747][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 178.849036][ T11] kthread (kernel/kthread.c:388) [ 178.849282][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 178.849580][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 178.849851][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 178.850095][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 179.048994][ T11] ------------[ cut here ]------------ | [ 179.049323][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 179.049734][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 179.050294][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress bridge stp llc macvlan vrf veth [ 179.051564][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 179.052284][ T11] Workqueue: netns cleanup_net [ 179.052550][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 179.052903][ 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 5c 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 5c 87 mov $0xffffffff875c99a0,%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 [ 179.054026][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 179.054380][ T11] RAX: 0000000000000000 RBX: ffffffffc0597f00 RCX: ffffffff84b0e74f [ 179.054848][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 179.055311][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 179.055782][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006ad2610 [ 179.056234][ T11] R13: ffff888006ad2dd8 R14: ffffc900000bfc98 R15: ffff888006ad2ba0 [ 179.056707][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 179.057255][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 179.057640][ T11] CR2: 000055c4b71f7668 CR3: 0000000005186006 CR4: 00000000001706f0 [ 179.058109][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 179.058611][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 179.059128][ T11] Call Trace: [ 179.059354][ T11] [ 179.059577][ T11] ? __warn (kernel/panic.c:677) [ 179.059813][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 179.060141][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 179.060490][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 179.060768][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 179.061056][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 179.061377][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 179.061685][ 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) [ 179.061919][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 179.062243][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 179.062596][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 179.062991][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 179.063256][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 179.063578][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 179.063903][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 179.064184][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 179.064524][ T11] process_one_work (kernel/workqueue.c:2638) [ 179.064806][ 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) [ 179.065073][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 179.065368][ T11] ? assign_work (kernel/workqueue.c:1101) [ 179.065635][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 179.065921][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 179.066202][ T11] kthread (kernel/kthread.c:388) [ 179.066452][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 179.066761][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 179.067043][ 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