====================================== | [ 77.069968][ T11] ================================================================== | [ 77.070431][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 77.070829][ T11] Read of size 1 at addr ffff8880053350bc by task kworker/u8:0/11 | [ 77.071286][ T11] [ 77.071868][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 77.072538][ T11] Workqueue: netns cleanup_net [ 77.072824][ T11] Call Trace: [ 77.073013][ T11] [ 77.073180][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 77.073432][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 77.073805][ T11] ? kobject_put (lib/kobject.c:729) [ 77.074084][ T11] print_report (mm/kasan/report.c:489) [ 77.074333][ 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) [ 77.074606][ T11] kasan_report (mm/kasan/report.c:603) [ 77.074846][ T11] ? kobject_put (lib/kobject.c:729) [ 77.075115][ T11] kobject_put (lib/kobject.c:729) [ 77.075409][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 77.075788][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 77.076130][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 77.076552][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 77.076798][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 77.077119][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 77.077408][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 77.077703][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 77.077988][ T11] process_one_work (kernel/workqueue.c:2638) [ 77.078303][ 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) [ 77.078584][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 77.078905][ T11] ? assign_work (kernel/workqueue.c:1101) [ 77.079187][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 77.079460][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 77.079771][ T11] kthread (kernel/kthread.c:388) [ 77.080034][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 77.080280][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 77.080578][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 77.080825][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 77.101923][ T11] ------------[ cut here ]------------ | [ 77.102333][ T11] refcount_t: underflow; use-after-free. | [ 77.102705][ T11] WARNING: CPU: 2 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 77.103217][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel act_mirred cls_flower bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth [ 77.104826][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 77.105533][ T11] Workqueue: netns cleanup_net [ 77.105810][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 77.106148][ 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 a4 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 a4 e8 5e 4c 2b ff and -0xd4b3a2(%rax,%rbp,8),%ah 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 [ 77.107316][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 77.107734][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa170e74f [ 77.108207][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 77.108681][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 77.109156][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff88800699a000 [ 77.109576][ T11] R13: ffff88800699add8 R14: ffffc900000bfc98 R15: ffff88800699aba0 [ 77.110001][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 77.110474][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.110827][ T11] CR2: 0000558e72a54bf8 CR3: 000000001431e003 CR4: 00000000001706f0 [ 77.111333][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.111887][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.112369][ T11] Call Trace: [ 77.112595][ T11] [ 77.112754][ T11] ? __warn (kernel/panic.c:677) [ 77.112980][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 77.113295][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 77.113554][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 77.113807][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 77.114072][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 77.114374][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 77.114673][ 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) [ 77.114950][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 77.115276][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 77.115600][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 77.115963][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 77.116290][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 77.116694][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 77.116941][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 77.117283][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 77.117583][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 77.117885][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 77.118183][ T11] process_one_work (kernel/workqueue.c:2638) [ 77.118488][ 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) [ 77.118748][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 77.119040][ T11] ? assign_work (kernel/workqueue.c:1101) [ 77.119336][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 77.119613][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 77.119893][ T11] kthread (kernel/kthread.c:388) [ 77.120139][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 77.120412][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 77.120682][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 77.120939][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 77.124293][ T11] ------------[ cut here ]------------ | [ 77.124627][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 77.125031][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 77.125601][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel act_mirred cls_flower bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth [ 77.127662][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 77.128655][ T11] Workqueue: netns cleanup_net [ 77.128941][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 77.129285][ 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 a4 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 a4 mov $0xffffffffa41c99a0,%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 [ 77.130425][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 77.130762][ T11] RAX: 0000000000000000 RBX: ffffffffc045af00 RCX: ffffffffa170e74f [ 77.131222][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 77.131642][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 77.132101][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800699a610 [ 77.132563][ T11] R13: ffff88800699add8 R14: ffffc900000bfc98 R15: ffff88800699aba0 [ 77.133033][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 77.133539][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.133946][ T11] CR2: 0000558e72a54bf8 CR3: 000000001431e003 CR4: 00000000001706f0 [ 77.134401][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.134858][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.135348][ T11] Call Trace: [ 77.135610][ T11] [ 77.135779][ T11] ? __warn (kernel/panic.c:677) [ 77.136033][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 77.136348][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 77.136624][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 77.136868][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 77.137131][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 77.137412][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 77.137700][ 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) [ 77.137966][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 77.138270][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 77.138652][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 77.139043][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 77.139322][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 77.139657][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 77.139986][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 77.140255][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 77.140561][ T11] process_one_work (kernel/workqueue.c:2638) [ 77.140887][ 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) [ 77.141148][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 77.141477][ T11] ? assign_work (kernel/workqueue.c:1101) [ 77.141756][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 77.142015][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 77.142298][ T11] kthread (kernel/kthread.c:388) [ 77.142615][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 77.142897][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 77.143185][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 77.143482][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 77.335747][ T11] ------------[ cut here ]------------ | [ 77.336084][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 77.336464][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 77.336960][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel act_mirred cls_flower bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth [ 77.338416][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 77.339176][ T11] Workqueue: netns cleanup_net [ 77.339499][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 77.339874][ 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 a4 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 a4 mov $0xffffffffa41c99a0,%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 [ 77.340979][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 77.341334][ T11] RAX: 0000000000000000 RBX: ffffffffc045af00 RCX: ffffffffa170e74f [ 77.341832][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 77.342286][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 77.342733][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888009c02610 [ 77.343154][ T11] R13: ffff888009c02dd8 R14: ffffc900000bfc98 R15: ffff888009c02ba0 [ 77.343630][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 77.344127][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.344518][ T11] CR2: 000055648b186ee8 CR3: 00000000054a2004 CR4: 00000000001706f0 [ 77.345000][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.345470][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.345886][ T11] Call Trace: [ 77.346181][ T11] [ 77.346342][ T11] ? __warn (kernel/panic.c:677) [ 77.346612][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 77.346931][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 77.347274][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 77.347642][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 77.347918][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 77.348213][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 77.348552][ 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) [ 77.348798][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 77.349120][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 77.349479][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 77.349859][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 77.350102][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 77.350442][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 77.350752][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 77.351096][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 77.351399][ T11] process_one_work (kernel/workqueue.c:2638) [ 77.351762][ 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) [ 77.352091][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 77.352408][ T11] ? assign_work (kernel/workqueue.c:1101) [ 77.352734][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 77.353011][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 77.353305][ T11] kthread (kernel/kthread.c:388) [ 77.353559][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 77.353807][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 77.354047][ 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