====================================== | [ 202.529339][ T70] ================================================================== | [ 202.529783][ T70] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:729) | [ 202.530214][ T70] Read of size 1 at addr ffff888003975e7c by task kworker/u8:1/70 | [ 202.530660][ T70] [ 202.531248][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 202.531904][ T70] Workqueue: netns cleanup_net [ 202.532186][ T70] Call Trace: [ 202.532369][ T70] [ 202.532563][ T70] dump_stack_lvl (lib/dump_stack.c:107) [ 202.532835][ T70] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 202.533226][ T70] ? kobject_put (lib/kobject.c:729) [ 202.533494][ T70] print_report (mm/kasan/report.c:489) [ 202.533748][ T70] ? 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) [ 202.534034][ T70] kasan_report (mm/kasan/report.c:603) [ 202.534295][ T70] ? kobject_put (lib/kobject.c:729) [ 202.534532][ T70] kobject_put (lib/kobject.c:729) [ 202.534761][ T70] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 202.535154][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 202.535502][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 202.535877][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 202.536150][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 202.536500][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 202.536798][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 202.537088][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 202.537387][ T70] process_one_work (kernel/workqueue.c:2638) [ 202.537649][ T70] ? 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) [ 202.537894][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 202.538208][ T70] ? assign_work (kernel/workqueue.c:1101) [ 202.538467][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 202.538723][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 202.539121][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.539424][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.539762][ T70] kthread (kernel/kthread.c:388) [ 202.540017][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 202.540283][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 202.540552][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 202.540823][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 202.561217][ T70] ------------[ cut here ]------------ | [ 202.561540][ T70] refcount_t: underflow; use-after-free. | [ 202.561980][ T70] WARNING: CPU: 2 PID: 70 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 202.562508][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_mirred act_gact cls_flower ip_gre gre sch_ingress 8021q vrf veth [ 202.563924][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 202.564635][ T70] Workqueue: netns cleanup_net [ 202.564912][ T70] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 202.565280][ T70] 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 42 b5 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: 42 b5 e8 rex.X mov $0xe8,%bpl 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 [ 202.566425][ T70] RSP: 0018:ffffc9000050fb98 EFLAGS: 00010282 [ 202.566746][ T70] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb290e74f [ 202.567179][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 202.567600][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: fffff520000a1f18 [ 202.568029][ T70] R10: ffffc9000050f8c7 R11: 205d303754202020 R12: ffff88800826a000 [ 202.568497][ T70] R13: ffff88800826add8 R14: ffffc9000050fc98 R15: ffff88800826aba0 [ 202.568941][ T70] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 202.569485][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 202.569925][ T70] CR2: 0000559ffa26cdec CR3: 0000000007d72005 CR4: 00000000001706f0 [ 202.570408][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 202.570850][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 202.571370][ T70] Call Trace: [ 202.571559][ T70] [ 202.571747][ T70] ? __warn (kernel/panic.c:677) [ 202.571997][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 202.572333][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 202.572606][ T70] ? vprintk_emit (kernel/printk/printk.c:2313) [ 202.572857][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 202.573119][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 202.573370][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 202.573642][ T70] ? 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) [ 202.573896][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 202.574227][ T70] ? refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 202.574522][ T70] br_sysfs_delbr (net/bridge/br_sysfs_br.c:1086) bridge [ 202.574870][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 202.575220][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 202.575591][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 202.575848][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 202.576187][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 202.576463][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 202.576734][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 202.577052][ T70] process_one_work (kernel/workqueue.c:2638) [ 202.577335][ T70] ? 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) [ 202.577599][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 202.577904][ T70] ? assign_work (kernel/workqueue.c:1101) [ 202.578187][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 202.578475][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 202.578851][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.579146][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.579434][ T70] kthread (kernel/kthread.c:388) [ 202.579673][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 202.579940][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 202.580196][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 202.580459][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 202.584150][ T70] ------------[ cut here ]------------ | [ 202.584473][ T70] sysfs group 'bridge' not found for kobject 'br2' | [ 202.584877][ T70] WARNING: CPU: 2 PID: 70 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 202.585516][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_mirred act_gact cls_flower ip_gre gre sch_ingress 8021q vrf veth [ 202.586983][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 202.587733][ T70] Workqueue: netns cleanup_net [ 202.588011][ T70] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 202.588409][ T70] 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 3c b5 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 3c b5 mov $0xffffffffb53c99a0,%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 [ 202.589573][ T70] RSP: 0018:ffffc9000050fba0 EFLAGS: 00010282 [ 202.589927][ T70] RAX: 0000000000000000 RBX: ffffffffc0460f00 RCX: ffffffffb290e74f [ 202.590347][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 202.590764][ T70] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a1f19 [ 202.591191][ T70] R10: ffffc9000050f8cf R11: 205d303754202020 R12: ffff88800826a610 [ 202.591612][ T70] R13: ffff88800826add8 R14: ffffc9000050fc98 R15: ffff88800826aba0 [ 202.592039][ T70] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 202.592536][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 202.592925][ T70] CR2: 0000559ffa26cdec CR3: 0000000007d72005 CR4: 00000000001706f0 [ 202.593528][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 202.593994][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 202.594466][ T70] Call Trace: [ 202.594694][ T70] [ 202.594872][ T70] ? __warn (kernel/panic.c:677) [ 202.595154][ T70] ? console_trylock (kernel/printk/printk.c:2659 kernel/printk/printk.c:2654) [ 202.595451][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 202.595744][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 202.596025][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 202.596300][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 202.596576][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 202.596878][ T70] ? 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) [ 202.597175][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 202.597526][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 202.597918][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 202.598409][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 202.598701][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 202.599136][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 202.599416][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 202.599721][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 202.600065][ T70] process_one_work (kernel/workqueue.c:2638) [ 202.600367][ T70] ? 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) [ 202.600644][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 202.600981][ T70] ? assign_work (kernel/workqueue.c:1101) [ 202.601250][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 202.601516][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 202.601889][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.602241][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.602551][ T70] kthread (kernel/kthread.c:388) [ 202.602765][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 202.603127][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 202.603383][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 202.603648][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 202.848013][ T70] ------------[ cut here ]------------ | [ 202.848488][ T70] sysfs group 'bridge' not found for kobject 'br2' | [ 202.849074][ T70] WARNING: CPU: 2 PID: 70 at fs/sysfs/group.c:282 sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) | [ 202.849845][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_mirred act_gact cls_flower ip_gre gre sch_ingress 8021q vrf veth [ 202.851866][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 202.852877][ T70] Workqueue: netns cleanup_net [ 202.853305][ T70] RIP: 0010:sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 202.853772][ T70] 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 3c b5 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 3c b5 mov $0xffffffffb53c99a0,%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 [ 202.855293][ T70] RSP: 0018:ffffc9000050fba0 EFLAGS: 00010282 [ 202.855773][ T70] RAX: 0000000000000000 RBX: ffffffffc0460f00 RCX: ffffffffb290e74f [ 202.856392][ T70] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 [ 202.856987][ T70] RBP: 0000000000000000 R08: 0000000000000000 R09: fffff520000a1f19 [ 202.857421][ T70] R10: ffffc9000050f8cf R11: 205d303754202020 R12: ffff8880081e2610 [ 202.857837][ T70] R13: ffff8880081e2dd8 R14: ffffc9000050fc98 R15: ffff8880081e2ba0 [ 202.858265][ T70] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 202.858740][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 202.859106][ T70] CR2: 0000559ffa26cdec CR3: 0000000007d72005 CR4: 00000000001706f0 [ 202.859536][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 202.859963][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 202.860386][ T70] Call Trace: [ 202.860561][ T70] [ 202.860717][ T70] ? __warn (kernel/panic.c:677) [ 202.860941][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 202.861231][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 202.861481][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 202.861713][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 202.861968][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 202.862263][ T70] ? 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) [ 202.862503][ T70] ? sysfs_remove_group (fs/sysfs/group.c:282 (discriminator 1)) [ 202.862777][ T70] br_dev_delete (net/bridge/br_if.c:396) bridge [ 202.863116][ T70] br_net_exit_batch_rtnl (net/bridge/br.c:369) bridge [ 202.863486][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) [ 202.863739][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 202.864005][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 202.864284][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 202.864529][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 202.864821][ T70] process_one_work (kernel/workqueue.c:2638) [ 202.865127][ T70] ? 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) [ 202.865374][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 202.865668][ T70] ? assign_work (kernel/workqueue.c:1101) [ 202.865937][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 202.866203][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 202.866551][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.866835][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 202.867115][ T70] kthread (kernel/kthread.c:388) [ 202.867347][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 202.867616][ T70] ret_from_fork (arch/x86/kernel/process.c:153) [ 202.867865][ T70] ? __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