------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=2 set at [] __mutex_trylock_common kernel/locking/mutex.c:122 [inline] do not call blocking ops when !TASK_RUNNING; state=2 set at [] __mutex_trylock kernel/locking/mutex.c:149 [inline] do not call blocking ops when !TASK_RUNNING; state=2 set at [] __mutex_lock_common kernel/locking/mutex.c:616 [inline] do not call blocking ops when !TASK_RUNNING; state=2 set at [] __mutex_lock+0x6d9/0x12f0 kernel/locking/mutex.c:733 WARNING: CPU: 0 PID: 3658 at kernel/sched/core.c:9656 __might_sleep+0x105/0x150 kernel/sched/core.c:9656 Modules linked in: CPU: 0 PID: 3658 Comm: kworker/0:4 Tainted: G W 5.17.0-syzkaller-12817-gcffb2b72d3ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:__might_sleep+0x105/0x150 kernel/sched/core.c:9656 Code: 70 02 00 48 8d bb f0 16 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 75 34 48 8b 93 f0 16 00 00 48 c7 c7 00 df cb 89 e8 96 47 c8 07 <0f> 0b e9 75 ff ff ff e8 cf 29 73 00 e9 26 ff ff ff 89 34 24 e8 d2 RSP: 0018:ffffc90000007d68 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880741c9d00 RCX: 0000000000000000 RDX: ffff8880741c9d00 RSI: ffffffff815fce18 RDI: fffff52000000f9f RBP: ffffffff8a2479c0 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815f77ee R11: 0000000000000000 R12: 00000000000002fe R13: 0000000000000000 R14: ffffffff8a247dc0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557515708 CR3: 000000007e8d9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_release_queue+0x1f/0x320 block/blk-sysfs.c:766 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 blkg_free.part.0+0x112/0x1f0 block/blk-cgroup.c:86 blkg_free block/blk-cgroup.c:78 [inline] __blkg_release+0x105/0x160 block/blk-cgroup.c:102 rcu_do_batch kernel/rcu/tree.c:2535 [inline] rcu_core+0x7b1/0x1880 kernel/rcu/tree.c:2786 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4953 Code: d3 53 0c 08 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 17 6e 2d 00 fb 65 48 8b 1c 25 00 70 02 00 <48> 8d bb 80 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc9000469f888 EFLAGS: 00000246 RAX: 0000000000000007 RBX: ffff8880741c9d00 RCX: 1ffffffff1b6ce75 RDX: 0000000000000000 RSI: ffffffff817ee341 RDI: ffffffff815174d9 RBP: ffffc9000469f8d0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817ee328 R11: 0000000000000001 R12: ffff8880b9c3acd8 R13: ffff88801bb95700 R14: ffff8880b9c39f80 R15: ffff8880b9c3a9b8 context_switch kernel/sched/core.c:5076 [inline] __schedule+0xaa2/0x4940 kernel/sched/core.c:6382 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6547 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202 wq_worker_sleeping+0x1e5/0x250 kernel/workqueue.c:927 sched_submit_work kernel/sched/core.c:6422 [inline] schedule+0x151/0x1f0 kernel/sched/core.c:6451 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6513 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 addrconf_dad_work+0xa3/0x1340 net/ipv6/addrconf.c:4067 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 ---------------- Code disassembly (best guess): 0: d3 53 0c rcll %cl,0xc(%rbx) 3: 08 85 c0 75 02 0f or %al,0xf0275c0(%rbp) 9: 0b 48 85 or -0x7b(%rax),%ecx c: db 0f fisttpl (%rdi) e: 85 25 01 00 00 4c test %esp,0x4c000001(%rip) # 0x4c000015 14: 89 f7 mov %esi,%edi 16: e8 fc f7 ff ff callq 0xfffff817 1b: e8 17 6e 2d 00 callq 0x2d6e37 20: fb sti 21: 65 48 8b 1c 25 00 70 mov %gs:0x27000,%rbx 28: 02 00 * 2a: 48 8d bb 80 15 00 00 lea 0x1580(%rbx),%rdi <-- trapping instruction 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 89 fa mov %rdi,%rdx 3e: 48 rex.W 3f: c1 .byte 0xc1