====================================== | [ 645.357145][ T11] ================================================================== | [ 645.357617][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 645.358053][ T11] Read of size 1 at addr ffff888003e64e3c by task kworker/u8:0/11 | [ 645.358465][ T11] [ 645.359052][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 645.359693][ T11] Workqueue: netns cleanup_net [ 645.359956][ T11] Call Trace: [ 645.360135][ T11] [ 645.360291][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 645.360541][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 645.360895][ T11] ? kobject_put (lib/kobject.c:729) [ 645.361132][ T11] print_report (mm/kasan/report.c:489) [ 645.361424][ 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) [ 645.361699][ T11] kasan_report (mm/kasan/report.c:603) [ 645.361962][ T11] ? kobject_put (lib/kobject.c:729) [ 645.362209][ T11] kobject_put (lib/kobject.c:729) [ 645.362440][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 645.362678][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 645.362924][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 645.363206][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 645.363442][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 645.363743][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 645.364005][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 645.364254][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 645.364530][ T11] process_one_work (kernel/workqueue.c:2638) [ 645.364792][ 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) [ 645.365036][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 645.365324][ T11] ? assign_work (kernel/workqueue.c:1101) [ 645.365636][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 645.365934][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 645.366230][ T11] kthread (kernel/kthread.c:388) [ 645.366458][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 645.366729][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 645.367009][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 645.367284][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 645.387680][ T11] ------------[ cut here ]------------ | [ 645.387981][ T11] refcount_t: underflow; use-after-free. | [ 645.388318][ T11] WARNING: CPU: 3 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 645.388808][ T11] Modules linked in: xfrm_interface sha1_generic xfrm_user nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c vxlan ip6_udp_tunnel udp_tunnel drop_monitor act_gact cls_flower sch_ingress netdevsim psample [ 645.390605][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 645.391249][ T11] Workqueue: netns cleanup_net [ 645.391505][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 645.391834][ T11] Code: f9 82 03 80 fb 01 0f 87 ee 02 b1 01 83 e3 01 0f 85 4d ff ff ff c6 05 9a f9 82 03 01 90 48 c7 c7 20 7a e2 95 e8 3e 05 2a ff 90 <0f> 0b 90 90 e9 2f ff ff ff 48 89 df e8 8c 68 a6 ff e9 b6 fe ff ff All code ======== 0: f9 stc 1: 82 (bad) 2: 03 80 fb 01 0f 87 add -0x78f0fe05(%rax),%eax 8: ee out %al,(%dx) 9: 02 b1 01 83 e3 01 add 0x1e38301(%rcx),%dh f: 0f 85 4d ff ff ff jne 0xffffffffffffff62 15: c6 05 9a f9 82 03 01 movb $0x1,0x382f99a(%rip) # 0x382f9b6 1c: 90 nop 1d: 48 c7 c7 20 7a e2 95 mov $0xffffffff95e27a20,%rdi 24: e8 3e 05 2a ff call 0xffffffffff2a0567 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 8c 68 a6 ff call 0xffffffffffa668c7 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 8c 68 a6 ff call 0xffffffffffa6689d 11: e9 b6 fe ff ff jmp 0xfffffffffffffecc [ 645.392857][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 645.393185][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff9311056f [ 645.393604][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 645.394087][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 645.394529][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff888015a7a000 [ 645.395043][ T11] R13: ffff888015a7adf8 R14: ffffc900000bfc98 R15: ffff888015a7abc0 [ 645.395484][ T11] FS: 0000000000000000(0000) GS:ffff88802f200000(0000) knlGS:0000000000000000 [ 645.395947][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 645.396302][ T11] CR2: 00007f213aa04c08 CR3: 0000000036b34005 CR4: 00000000001706f0 [ 645.396720][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 645.397143][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 645.397614][ T11] Call Trace: [ 645.397799][ T11] [ 645.397984][ T11] ? __warn (kernel/panic.c:677) [ 645.398227][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 645.398521][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 645.398760][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 645.399016][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 645.399249][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 645.399503][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 645.399778][ 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) [ 645.400024][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 645.400317][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 645.400663][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) [ 645.400903][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 645.401160][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 645.401442][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 645.401676][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 645.401975][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 645.402252][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 645.402498][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 645.402771][ T11] process_one_work (kernel/workqueue.c:2638) [ 645.403040][ 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) [ 645.403283][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 645.403568][ T11] ? assign_work (kernel/workqueue.c:1101) [ 645.403816][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 645.404076][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 645.404349][ T11] kthread (kernel/kthread.c:388) [ 645.404564][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 645.404811][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 645.405052][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 645.405298][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 645.408571][ T11] ------------[ cut here ]------------ | [ 645.408919][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 645.409398][ T11] WARNING: CPU: 2 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 645.409904][ T11] Modules linked in: xfrm_interface sha1_generic xfrm_user nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c vxlan ip6_udp_tunnel udp_tunnel drop_monitor act_gact cls_flower sch_ingress netdevsim psample [ 645.411720][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 645.412471][ T11] Workqueue: netns cleanup_net [ 645.412860][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 645.413198][ 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 a7 dc 95 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 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 a7 dc 95 mov $0xffffffff95dca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 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 e9 c7 da ff call 0xffffffffffdac829 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 e9 c7 da ff call 0xffffffffffdac7ff [ 645.414232][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 645.414555][ T11] RAX: 0000000000000000 RBX: ffffffff961be220 RCX: ffffffff9311056f [ 645.414975][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 645.415402][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 645.415822][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888015a7a628 [ 645.416247][ T11] R13: ffff888015a7adf8 R14: ffffc900000bfc98 R15: ffff888015a7abc0 [ 645.416667][ T11] FS: 0000000000000000(0000) GS:ffff88802ee00000(0000) knlGS:0000000000000000 [ 645.417200][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 645.417635][ T11] CR2: 00007ffe45745778 CR3: 00000000382b6002 CR4: 00000000001706f0 [ 645.418105][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 645.418573][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 645.419062][ T11] Call Trace: [ 645.419268][ T11] [ 645.419440][ T11] ? __warn (kernel/panic.c:677) [ 645.419715][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 645.419996][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 645.420311][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 645.420582][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 645.420844][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 645.421128][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 645.421454][ 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) [ 645.421725][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 645.422050][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 645.422382][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 645.422721][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 645.422984][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 645.423330][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 645.423647][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 645.423918][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 645.424247][ T11] process_one_work (kernel/workqueue.c:2638) [ 645.424536][ 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) [ 645.424815][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 645.425148][ T11] ? assign_work (kernel/workqueue.c:1101) [ 645.425423][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 645.425733][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 645.426015][ T11] kthread (kernel/kthread.c:388) [ 645.426234][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 645.426485][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 645.426722][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 645.426971][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 645.608965][ T11] ------------[ cut here ]------------ | [ 645.609338][ T11] sysfs group 'bridge' not found for kobject 'br0' | [ 645.609714][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 645.610267][ T11] Modules linked in: xfrm_interface sha1_generic xfrm_user nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c vxlan ip6_udp_tunnel udp_tunnel drop_monitor act_gact cls_flower sch_ingress netdevsim psample [ 645.612316][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 645.613035][ T11] Workqueue: netns cleanup_net [ 645.613352][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 645.613694][ 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 a7 dc 95 e8 60 65 5e ff 90 <0f> 0b 90 90 48 83 c4 08 5b 5d 41 5c c3 cc cc cc cc e8 e9 c7 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 a7 dc 95 mov $0xffffffff95dca7a0,%rdi 24: e8 60 65 5e ff call 0xffffffffff5e6589 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 e9 c7 da ff call 0xffffffffffdac829 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 e9 c7 da ff call 0xffffffffffdac7ff [ 645.614859][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 645.615240][ T11] RAX: 0000000000000000 RBX: ffffffff961be220 RCX: ffffffff9311056f [ 645.615659][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 645.616086][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 645.616506][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff8880150b2628 [ 645.616963][ T11] R13: ffff8880150b2df8 R14: ffffc900000bfc98 R15: ffff8880150b2bc0 [ 645.617449][ T11] FS: 0000000000000000(0000) GS:ffff88802ea00000(0000) knlGS:0000000000000000 [ 645.617978][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 645.618393][ T11] CR2: 00007fdb388aca30 CR3: 0000000036b34002 CR4: 00000000001706f0 [ 645.618873][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 645.619355][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 645.619807][ T11] Call Trace: [ 645.620024][ T11] [ 645.620195][ T11] ? __warn (kernel/panic.c:677) [ 645.620436][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 645.620733][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 645.621068][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 645.621333][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 645.621611][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 645.621893][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 645.622209][ 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) [ 645.622487][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 645.622790][ T11] br_dev_delete (net/bridge/br_if.c:396) [ 645.623076][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) [ 645.623388][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 645.623671][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 645.623976][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 645.624262][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 645.624582][ T11] process_one_work (kernel/workqueue.c:2638) [ 645.624883][ 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) [ 645.625189][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 645.625495][ T11] ? assign_work (kernel/workqueue.c:1101) [ 645.625804][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 645.626094][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 645.626379][ T11] kthread (kernel/kthread.c:388) [ 645.626597][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 645.626841][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 645.627089][ 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