====================================== | [ 44.829935][ T11] ================================================================== | [ 44.830429][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 44.830815][ T11] Read of size 1 at addr ffff8880056190bc by task kworker/u8:0/11 | [ 44.831258][ T11] [ 44.831887][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.832648][ T11] Workqueue: netns cleanup_net [ 44.832936][ T11] Call Trace: [ 44.833114][ T11] [ 44.833308][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 44.833583][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 44.833929][ T11] ? kobject_put (lib/kobject.c:729) [ 44.834185][ T11] print_report (mm/kasan/report.c:489) [ 44.834444][ 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) [ 44.834743][ T11] kasan_report (mm/kasan/report.c:603) [ 44.834995][ T11] ? kobject_put (lib/kobject.c:729) [ 44.835313][ T11] kobject_put (lib/kobject.c:729) [ 44.835559][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 44.835953][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 44.836292][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 44.836679][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 44.836916][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.837212][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 44.837497][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.837769][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 44.838068][ T11] process_one_work (kernel/workqueue.c:2638) [ 44.838355][ 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) [ 44.838638][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 44.838946][ T11] ? assign_work (kernel/workqueue.c:1101) [ 44.839230][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 44.839513][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 44.839861][ T11] kthread (kernel/kthread.c:388) [ 44.840087][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.840335][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 44.840571][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.840811][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 44.861301][ T11] ------------[ cut here ]------------ | [ 44.861629][ T11] refcount_t: underflow; use-after-free. | [ 44.862174][ T11] WARNING: CPU: 3 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 44.862754][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 44.863930][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.864672][ T11] Workqueue: netns cleanup_net [ 44.864992][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.865335][ 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 c2 b2 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 b2 e8 ret $0xe8b2 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 [ 44.866445][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 44.866788][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb010e74f [ 44.867253][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 44.867692][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 44.868195][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff888008372000 [ 44.868656][ T11] R13: ffff888008372dd8 R14: ffffc900000bfc98 R15: ffff888008372ba0 [ 44.869113][ T11] FS: 0000000000000000(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000 [ 44.869609][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.870003][ T11] CR2: 0000564131c0f8e8 CR3: 0000000036b1e004 CR4: 00000000001706f0 [ 44.870454][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.870942][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.871408][ T11] Call Trace: [ 44.871687][ T11] [ 44.871845][ T11] ? __warn (kernel/panic.c:677) [ 44.872122][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.872456][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 44.872716][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 44.872986][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 44.873236][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 44.873507][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 44.873776][ 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) [ 44.874019][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.874311][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 44.874603][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 44.874923][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 44.875252][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 44.875604][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 44.875841][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.876142][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 44.876407][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.876653][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 44.876923][ T11] process_one_work (kernel/workqueue.c:2638) [ 44.877189][ 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) [ 44.877478][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 44.877815][ T11] ? assign_work (kernel/workqueue.c:1101) [ 44.878196][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 44.878479][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 44.878815][ T11] kthread (kernel/kthread.c:388) [ 44.879075][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.879343][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 44.879610][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.879877][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 44.883522][ T11] ------------[ cut here ]------------ | [ 44.883850][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 44.884274][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 44.884796][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 44.885932][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.886612][ T11] Workqueue: netns cleanup_net [ 44.886882][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.887260][ 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 bc b2 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 b2 mov $0xffffffffb2bc99a0,%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 [ 44.888351][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 44.888694][ T11] RAX: 0000000000000000 RBX: ffffffffc0680f00 RCX: ffffffffb010e74f [ 44.889153][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 44.889615][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 44.890050][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008372610 [ 44.890534][ T11] R13: ffff888008372dd8 R14: ffffc900000bfc98 R15: ffff888008372ba0 [ 44.891049][ T11] FS: 0000000000000000(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000 [ 44.891600][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.891998][ T11] CR2: 0000564131c0f8e8 CR3: 0000000036b1e004 CR4: 00000000001706f0 [ 44.892485][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.893009][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.893474][ T11] Call Trace: [ 44.893663][ T11] [ 44.893873][ T11] ? __warn (kernel/panic.c:677) [ 44.894094][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 44.894377][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.894673][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 44.894912][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 44.895145][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 44.895408][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 44.895714][ 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) [ 44.895953][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 44.896269][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 44.896610][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 44.896993][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 44.897251][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.897608][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 44.897884][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 44.898232][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 44.898524][ T11] process_one_work (kernel/workqueue.c:2638) [ 44.898827][ 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) [ 44.899087][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 44.899485][ T11] ? assign_work (kernel/workqueue.c:1101) [ 44.899780][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 44.900078][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 44.900397][ T11] kthread (kernel/kthread.c:388) [ 44.900638][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.900916][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 44.901279][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 44.901558][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.129950][ T11] ------------[ cut here ]------------ | [ 45.130303][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 45.130711][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 45.131281][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 45.132400][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.133122][ T11] Workqueue: netns cleanup_net [ 45.133415][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.133798][ 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 bc b2 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 b2 mov $0xffffffffb2bc99a0,%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 [ 45.135039][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 45.135411][ T11] RAX: 0000000000000000 RBX: ffffffffc0680f00 RCX: ffffffffb010e74f [ 45.135914][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 45.136395][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 45.136914][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888006c5a610 [ 45.137386][ T11] R13: ffff888006c5add8 R14: ffffc900000bfc98 R15: ffff888006c5aba0 [ 45.137853][ T11] FS: 0000000000000000(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000 [ 45.138409][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.138837][ T11] CR2: 000055e9d1a05178 CR3: 0000000036b1e004 CR4: 00000000001706f0 [ 45.139317][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.139809][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.140284][ T11] Call Trace: [ 45.140482][ T11] [ 45.140658][ T11] ? __warn (kernel/panic.c:677) [ 45.140921][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 45.141180][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.141463][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.141747][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.142004][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.142307][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.142639][ 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) [ 45.142995][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.143290][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.143652][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.144063][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.144347][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.144623][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.144968][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.145246][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 45.145553][ T11] process_one_work (kernel/workqueue.c:2638) [ 45.145880][ 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) [ 45.146147][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.146467][ T11] ? assign_work (kernel/workqueue.c:1101) [ 45.146805][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.147074][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.147375][ T11] kthread (kernel/kthread.c:388) [ 45.147656][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.147932][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.148189][ 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