====================================== | [ 1529.182940][ T11] ================================================================== | [ 1529.183388][ T11] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 1529.183776][ T11] Read of size 1 at addr ffff88800311147c by task kworker/u8:0/11 | [ 1529.184241][ T11] [ 1529.184829][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1529.185819][ T11] Workqueue: netns cleanup_net [ 1529.186227][ T11] Call Trace: [ 1529.186516][ T11] [ 1529.186753][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 1529.187116][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 1529.187664][ T11] ? kobject_put (lib/kobject.c:729) [ 1529.188035][ T11] print_report (mm/kasan/report.c:489) [ 1529.188385][ 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) [ 1529.188772][ T11] kasan_report (mm/kasan/report.c:603) [ 1529.189193][ T11] ? kobject_put (lib/kobject.c:729) [ 1529.189563][ T11] kobject_put (lib/kobject.c:729) [ 1529.189926][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1529.190514][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1529.191019][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1529.191612][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1529.192013][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1529.192543][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1529.192961][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1529.193392][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1529.193825][ T11] process_one_work (kernel/workqueue.c:2638) [ 1529.194254][ 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) [ 1529.194681][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1529.195166][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1529.195570][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1529.196044][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1529.196526][ T11] kthread (kernel/kthread.c:388) [ 1529.196877][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1529.197272][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1529.197651][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1529.198084][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1529.219549][ T11] ------------[ cut here ]------------ | [ 1529.219910][ T11] refcount_t: underflow; use-after-free. | [ 1529.220284][ T11] WARNING: CPU: 1 PID: 11 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 1529.220808][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress em_meta cls_basic sch_ets sch_tbf bridge stp llc 8021q vrf veth [ 1529.222154][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1529.222836][ T11] Workqueue: netns cleanup_net [ 1529.223120][ T11] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1529.223508][ 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 82 8a 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: 82 (bad) 23: 8a e8 mov %al,%ch 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 [ 1529.224663][ T11] RSP: 0018:ffffc900000bfb98 EFLAGS: 00010282 [ 1529.225040][ T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff87d0e74f [ 1529.225456][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1529.225892][ T11] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff52000017f18 [ 1529.226345][ T11] R10: ffffc900000bf8c7 R11: 205d313154202020 R12: ffff888008cf2000 [ 1529.226759][ T11] R13: ffff888008cf2dd8 R14: ffffc900000bfc98 R15: ffff888008cf2ba0 [ 1529.227175][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 1529.227636][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1529.227984][ T11] CR2: 00007f5230a92f90 CR3: 0000000009764004 CR4: 00000000001706f0 [ 1529.228394][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1529.228839][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1529.229330][ T11] Call Trace: [ 1529.229533][ T11] [ 1529.229698][ T11] ? __warn (kernel/panic.c:677) [ 1529.229918][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1529.230231][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1529.230508][ T11] ? vprintk_emit (kernel/printk/printk.c:2313) [ 1529.230764][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1529.231007][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1529.231307][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1529.231597][ 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) [ 1529.231846][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1529.232164][ T11] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 1529.232453][ T11] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 1529.232786][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1529.233156][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1529.233529][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1529.233789][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1529.234152][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1529.234429][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1529.234695][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1529.235014][ T11] process_one_work (kernel/workqueue.c:2638) [ 1529.235272][ 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) [ 1529.235538][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1529.235855][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1529.236122][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1529.236397][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1529.236692][ T11] kthread (kernel/kthread.c:388) [ 1529.236938][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1529.237217][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1529.237469][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1529.237742][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1529.241030][ T11] ------------[ cut here ]------------ | [ 1529.241340][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1529.241743][ T11] WARNING: CPU: 1 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1529.242305][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress em_meta cls_basic sch_ets sch_tbf bridge stp llc 8021q vrf veth [ 1529.243957][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1529.244739][ T11] Workqueue: netns cleanup_net [ 1529.245089][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1529.245469][ 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 7c 8a 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 7c 8a mov $0xffffffff8a7c99a0,%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 [ 1529.246638][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1529.247016][ T11] RAX: 0000000000000000 RBX: ffffffffc0737f00 RCX: ffffffff87d0e74f [ 1529.247494][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1529.248029][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1529.248439][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888008cf2610 [ 1529.248855][ T11] R13: ffff888008cf2dd8 R14: ffffc900000bfc98 R15: ffff888008cf2ba0 [ 1529.249292][ T11] FS: 0000000000000000(0000) GS:ffff888035600000(0000) knlGS:0000000000000000 [ 1529.249834][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1529.250180][ T11] CR2: 00007f5230a92f90 CR3: 0000000031b1e001 CR4: 00000000001706f0 [ 1529.250623][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1529.251062][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1529.251503][ T11] Call Trace: [ 1529.251702][ T11] [ 1529.251879][ T11] ? __warn (kernel/panic.c:677) [ 1529.252112][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1529.252381][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1529.252687][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1529.252974][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1529.253242][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1529.253504][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1529.253829][ 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) [ 1529.254082][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1529.254383][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1529.254752][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1529.255131][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1529.255411][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1529.255734][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1529.256045][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1529.256290][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1529.256611][ T11] process_one_work (kernel/workqueue.c:2638) [ 1529.256885][ 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) [ 1529.257175][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1529.257501][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1529.257773][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1529.258048][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1529.258333][ T11] kthread (kernel/kthread.c:388) [ 1529.258543][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1529.258788][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1529.259048][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1529.259303][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 1529.435509][ T11] ------------[ cut here ]------------ | [ 1529.435892][ T11] sysfs group 'bridge' not found for kobject 'br2' | [ 1529.436366][ T11] WARNING: CPU: 3 PID: 11 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 1529.436969][ T11] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel sch_ingress em_meta cls_basic sch_ets sch_tbf bridge stp llc 8021q vrf veth [ 1529.438361][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1529.439082][ T11] Workqueue: netns cleanup_net [ 1529.439347][ T11] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1529.439715][ 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 7c 8a 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 7c 8a mov $0xffffffff8a7c99a0,%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 [ 1529.440878][ T11] RSP: 0018:ffffc900000bfba0 EFLAGS: 00010282 [ 1529.441224][ T11] RAX: 0000000000000000 RBX: ffffffffc0737f00 RCX: ffffffff87d0e74f [ 1529.441679][ T11] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 1529.442114][ T11] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff52000017f19 [ 1529.442623][ T11] R10: ffffc900000bf8cf R11: 205d313154202020 R12: ffff888005cf2610 [ 1529.443156][ T11] R13: ffff888005cf2dd8 R14: ffffc900000bfc98 R15: ffff888005cf2ba0 [ 1529.443650][ T11] FS: 0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000 [ 1529.444172][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1529.444593][ T11] CR2: 0000563ea84ac0a0 CR3: 0000000031b1e006 CR4: 00000000001706f0 [ 1529.445063][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1529.445607][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1529.446081][ T11] Call Trace: [ 1529.446284][ T11] [ 1529.446440][ T11] ? __warn (kernel/panic.c:677) [ 1529.446660][ T11] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 1529.446937][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1529.447241][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 1529.447507][ T11] ? handle_bug (arch/x86/kernel/traps.c:238) [ 1529.447767][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 1529.448076][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 1529.448360][ 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) [ 1529.448641][ T11] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 1529.448943][ T11] br_dev_delete (net/bridge/br_if.c:396) bridge [ 1529.449297][ T11] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 1529.449702][ T11] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 1529.449945][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1529.450235][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 1529.450534][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1529.450821][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 1529.451147][ T11] process_one_work (kernel/workqueue.c:2638) [ 1529.451407][ 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) [ 1529.451656][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 1529.451963][ T11] ? assign_work (kernel/workqueue.c:1101) [ 1529.452240][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 1529.452528][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 1529.452873][ T11] kthread (kernel/kthread.c:388) [ 1529.453128][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 1529.453421][ T11] ret_from_fork (arch/x86/kernel/process.c:153) [ 1529.453767][ 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