====================================== | [ 87.795890][ T11] ================================================================== | [ 87.796539][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 87.797140][ T11] Read of size 1 at addr ffff888006ab90bc by task kworker/u8:0/11 | [ 87.797785][ T11] [ 87.798635][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 87.799695][ T11] Workqueue: netns cleanup_net [ 87.800087][ T11] Call Trace: [ 87.800387][ T11] [ 87.800636][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 87.801020][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 87.801546][ T11] ? kobject_put (lib/kobject.c:729) [ 87.801906][ T11] print_report (mm/kasan/report.c:489) [ 87.802266][ 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) [ 87.802675][ T11] kasan_report (mm/kasan/report.c:603) [ 87.803025][ T11] ? kobject_put (lib/kobject.c:729) [ 87.803378][ T11] kobject_put (lib/kobject.c:729) [ 87.803723][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 87.804263][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 87.804750][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 87.805287][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 87.805643][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 87.806088][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 87.806513][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 87.806922][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 87.807372][ T11] process_one_work (kernel/workqueue.c:2638) [ 87.807810][ 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) [ 87.808238][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 87.808726][ T11] ? assign_work (kernel/workqueue.c:1101) [ 87.809148][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 87.809558][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 87.809998][ T11] kthread (kernel/kthread.c:388) [ 87.810364][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 87.810778][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 87.811250][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 87.811642][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 87.842397][ T11] ------------[ cut here ]------------ | [ 87.842871][ T11] refcount_t: underflow; use-after-free. | [ 87.843428][ T11] WARNING: CPU: 3 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 87.844220][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel sch_tbf bridge stp llc act_gact cls_flower sch_ingress 8021q vrf veth [ 87.846106][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 87.847139][ T11] Workqueue: netns cleanup_net [ 87.847536][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 87.848030][ 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 e2 9a 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: e2 9a loop 0xffffffffffffffbe 24: e8 5e 4c 2b ff call 0xffffffffff2b4c87 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 [ 87.849744][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 87.850242][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff9830e74f [ 87.850946][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 87.851774][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 87.852438][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff88800a22a000 [ 87.853202][ T11] R13: ffff88800a22add8 R14: ffffc900000bfc98 R15: ffff88800a22aba0 [ 87.853879][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 87.854610][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.855188][ T11] CR2: 000055cf73e01dec CR3: 000000001351e004 CR4: 00000000001706f0 [ 87.855856][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.856519][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.857328][ T11] Call Trace: [ 87.857612][ T11] [ 87.857782][ T11] ? __warn (kernel/panic.c:677) [ 87.858031][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 87.858351][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 87.858593][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 87.858867][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 87.859212][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 87.859463][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 87.859740][ 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) [ 87.859988][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 87.860286][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 87.860578][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 87.860902][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 87.861234][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 87.861584][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 87.861817][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 87.862180][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 87.862468][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 87.862724][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 87.863081][ T11] process_one_work (kernel/workqueue.c:2638) [ 87.863365][ 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) [ 87.863623][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 87.863938][ T11] ? assign_work (kernel/workqueue.c:1101) [ 87.864191][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 87.864446][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 87.864716][ T11] kthread (kernel/kthread.c:388) [ 87.864928][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 87.865179][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 87.865414][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 87.865658][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 87.868804][ T11] ------------[ cut here ]------------ | [ 87.869249][ T11] sysfs group 'bridge' not found for kobject 'br3' | [ 87.869809][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 87.871278][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel sch_tbf bridge stp llc act_gact cls_flower sch_ingress 8021q vrf veth [ 87.873402][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 87.874373][ T11] Workqueue: netns cleanup_net [ 87.874761][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.875239][ 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 dc 9a 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 dc 9a mov $0xffffffff9adc99a0,%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 [ 87.876861][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 87.877513][ T11] RAX: 0000000000000000 RBX: ffffffffc05b0f00 RCX: ffffffff9830e74f [ 87.878336][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 87.879033][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 87.879703][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a22a610 [ 87.880516][ T11] R13: ffff88800a22add8 R14: ffffc900000bfc98 R15: ffff88800a22aba0 [ 87.881186][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 87.881897][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.882442][ T11] CR2: 000055cf73e01dec CR3: 000000001351e004 CR4: 00000000001706f0 [ 87.883089][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.883774][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.884497][ T11] Call Trace: [ 87.884812][ T11] [ 87.885246][ T11] ? __warn (kernel/panic.c:677) [ 87.885616][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 87.886031][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.886494][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 87.886933][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 87.887293][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 87.887718][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 87.888195][ 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) [ 87.888592][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 87.889085][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 87.889635][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 87.890277][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 87.890678][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 87.891184][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 87.891640][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 87.892060][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 87.892481][ T11] process_one_work (kernel/workqueue.c:2638) [ 87.892891][ 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) [ 87.893437][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 87.893856][ T11] ? assign_work (kernel/workqueue.c:1101) [ 87.894289][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 87.894748][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 87.895308][ T11] kthread (kernel/kthread.c:388) [ 87.895703][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 87.896128][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 87.896514][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 87.896918][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 88.088391][ T11] ------------[ cut here ]------------ | [ 88.088735][ T11] sysfs group 'bridge' not found for kobject 'br3' | [ 88.089203][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 88.089835][ T11] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel sch_tbf bridge stp llc act_gact cls_flower sch_ingress 8021q vrf veth [ 88.091280][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 88.092027][ T11] Workqueue: netns cleanup_net [ 88.092351][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 88.092790][ 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 dc 9a 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 dc 9a mov $0xffffffff9adc99a0,%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 [ 88.094048][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 88.094516][ T11] RAX: 0000000000000000 RBX: ffffffffc05b0f00 RCX: ffffffff9830e74f [ 88.095081][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 88.095552][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 88.096015][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff88800a5da610 [ 88.096430][ T11] R13: ffff88800a5dadd8 R14: ffffc900000bfc98 R15: ffff88800a5daba0 [ 88.096844][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 88.097314][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.097658][ T11] CR2: 000055cf756c3d78 CR3: 000000001351e006 CR4: 00000000001706f0 [ 88.098080][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.098585][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.099089][ T11] Call Trace: [ 88.099292][ T11] [ 88.099565][ T11] ? __warn (kernel/panic.c:677) [ 88.099801][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 88.100100][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 88.100521][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 88.100840][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 88.101155][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 88.101483][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 88.101798][ 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) [ 88.102092][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 88.102366][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 88.102732][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 88.103165][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 88.103453][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 88.103741][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 88.104053][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 88.104361][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 88.104683][ T11] process_one_work (kernel/workqueue.c:2638) [ 88.104998][ 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) [ 88.105240][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 88.105546][ T11] ? assign_work (kernel/workqueue.c:1101) [ 88.105874][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 88.106156][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 88.106489][ T11] kthread (kernel/kthread.c:388) [ 88.106789][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 88.107157][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 88.107419][ 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