====================================== | [ 45.153242][ T11] ================================================================== | [ 45.153682][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 45.154090][ T11] Read of size 1 at addr ffff88800364f97c by task kworker/u8:0/11 | [ 45.154507][ T11] [ 45.155073][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.155785][ T11] Workqueue: netns cleanup_net [ 45.156090][ T11] Call Trace: [ 45.156296][ T11] [ 45.156454][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 45.156697][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 45.157094][ T11] ? kobject_put (lib/kobject.c:729) [ 45.157348][ T11] print_report (mm/kasan/report.c:489) [ 45.157592][ 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) [ 45.157879][ T11] kasan_report (mm/kasan/report.c:603) [ 45.158116][ T11] ? kobject_put (lib/kobject.c:729) [ 45.158379][ T11] kobject_put (lib/kobject.c:729) [ 45.158624][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 45.158970][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.159322][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.159698][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.159948][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.160251][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.160548][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.160820][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 45.161108][ T11] process_one_work (kernel/workqueue.c:2638) [ 45.161386][ 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) [ 45.161641][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.161956][ T11] ? assign_work (kernel/workqueue.c:1101) [ 45.162223][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.162484][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.162805][ T11] kthread (kernel/kthread.c:388) [ 45.163056][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.163329][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.163569][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.163830][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.184174][ T11] ------------[ cut here ]------------ | [ 45.184486][ T11] refcount_t: underflow; use-after-free. | [ 45.184857][ T11] WARNING: CPU: 3 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 45.185403][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 45.186593][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.187310][ T11] Workqueue: netns cleanup_net [ 45.187574][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.187934][ 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 22 86 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: 22 86 e8 5e 4c 2b and 0x2b4c5ee8(%rsi),%al 28:* ff 90 0f 0b 90 90 call *-0x6f6ff4f1(%rax) <-- trapping instruction 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 [ 45.189106][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 45.189464][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8370e74f [ 45.189905][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 45.190330][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 45.190747][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff88800a0fa000 [ 45.191207][ T11] R13: ffff88800a0fadd8 R14: ffffc900000bfc98 R15: ffff88800a0faba0 [ 45.191626][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 45.192101][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.192455][ T11] CR2: 000055b10b0ea2c8 CR3: 0000000010f1e001 CR4: 00000000001706f0 [ 45.192877][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.193306][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.193731][ T11] Call Trace: [ 45.193931][ T11] [ 45.194111][ T11] ? __warn (kernel/panic.c:677) [ 45.194334][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.194630][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.194875][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 45.195136][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.195369][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.195617][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.195887][ 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) [ 45.196132][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.196431][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 45.196732][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 45.197064][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.197386][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.197740][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.197979][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.198286][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.198551][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.198804][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 45.199091][ T11] process_one_work (kernel/workqueue.c:2638) [ 45.199358][ 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) [ 45.199607][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.199899][ T11] ? assign_work (kernel/workqueue.c:1101) [ 45.200152][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.200406][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.200677][ T11] kthread (kernel/kthread.c:388) [ 45.200896][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.201145][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.201388][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.201633][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.204764][ T11] ------------[ cut here ]------------ | [ 45.205063][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 45.205449][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 45.206000][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 45.207088][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.207810][ T11] Workqueue: netns cleanup_net [ 45.208101][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.208438][ 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 1c 86 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 1c 86 mov $0xffffffff861c99a0,%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 [ 45.209565][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 45.209893][ T11] RAX: 0000000000000000 RBX: ffffffffc03abf00 RCX: ffffffff8370e74f [ 45.210331][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 45.210752][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 45.211180][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a0fa610 [ 45.211611][ T11] R13: ffff88800a0fadd8 R14: ffffc900000bfc98 R15: ffff88800a0faba0 [ 45.212075][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 45.212597][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.212986][ T11] CR2: 000055b10b0ea2c8 CR3: 0000000010f1e001 CR4: 00000000001706f0 [ 45.213461][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.213917][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.214387][ T11] Call Trace: [ 45.214582][ T11] [ 45.214771][ T11] ? __warn (kernel/panic.c:677) [ 45.214994][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 45.215277][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.215574][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.215841][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.216108][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.216381][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.216678][ 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) [ 45.216934][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.217244][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.217582][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.217984][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.218234][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.218535][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.218800][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.219062][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 45.219350][ T11] process_one_work (kernel/workqueue.c:2638) [ 45.219614][ 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) [ 45.219865][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.220192][ T11] ? assign_work (kernel/workqueue.c:1101) [ 45.220457][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.220725][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.221048][ T11] kthread (kernel/kthread.c:388) [ 45.221277][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.221544][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.221802][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.222069][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 45.406013][ T11] ------------[ cut here ]------------ | [ 45.406383][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 45.406841][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 45.407378][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth [ 45.408735][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.409587][ T11] Workqueue: netns cleanup_net [ 45.409883][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.410248][ 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 1c 86 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 1c 86 mov $0xffffffff861c99a0,%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 [ 45.411552][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 45.411997][ T11] RAX: 0000000000000000 RBX: ffffffffc03abf00 RCX: ffffffff8370e74f [ 45.412478][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 45.413043][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 45.413556][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800747a610 [ 45.414016][ T11] R13: ffff88800747add8 R14: ffffc900000bfc98 R15: ffff88800747aba0 [ 45.414516][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 45.415100][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.415518][ T11] CR2: 00007fb7f6060270 CR3: 00000000026dc001 CR4: 00000000001706f0 [ 45.416020][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.416461][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.416928][ T11] Call Trace: [ 45.417114][ T11] [ 45.417275][ T11] ? __warn (kernel/panic.c:677) [ 45.417501][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 45.417758][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.418049][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 45.418296][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 45.418543][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 45.418798][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.419081][ 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) [ 45.419440][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 45.419796][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 45.420220][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 45.420642][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 45.420908][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.421202][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 45.421539][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.421822][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 45.422163][ T11] process_one_work (kernel/workqueue.c:2638) [ 45.422471][ 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) [ 45.422741][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 45.423080][ T11] ? assign_work (kernel/workqueue.c:1101) [ 45.423337][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 45.423627][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 45.423916][ T11] kthread (kernel/kthread.c:388) [ 45.424186][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 45.424467][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 45.424741][ 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