------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 1027 at kernel/locking/lockdep.c:231 hlock_class kernel/locking/lockdep.c:231 [inline] WARNING: CPU: 0 PID: 1027 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4772 [inline] WARNING: CPU: 0 PID: 1027 at kernel/locking/lockdep.c:231 __lock_acquire+0x58c/0x2040 kernel/locking/lockdep.c:5092 Modules linked in: CPU: 0 UID: 0 PID: 1027 Comm: kworker/0:1H Not tainted 6.11.0-rc3-syzkaller-00221-g670c12ce09a8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: kblockd blk_mq_timeout_work RIP: 0010:hlock_class kernel/locking/lockdep.c:231 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4772 [inline] RIP: 0010:__lock_acquire+0x58c/0x2040 kernel/locking/lockdep.c:5092 Code: 00 00 83 3d 75 2d a8 0e 00 75 23 90 48 c7 c7 00 d4 0a 8c 48 c7 c6 a0 d6 0a 8c e8 4f d8 e5 ff 48 ba 00 00 00 00 00 fc ff df 90 <0f> 0b 90 90 90 31 db 48 81 c3 c4 00 00 00 48 89 d8 48 c1 e8 03 0f RSP: 0018:ffffc900041271f0 EFLAGS: 00010046 RAX: 5ac6f4e340108b00 RBX: 0000000000001cd8 RCX: ffff888022431e00 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000000000a R08: ffffffff8155b4d2 R09: 1ffff1101724519a R10: dffffc0000000000 R11: ffffed101724519b R12: ffff888022431e00 R13: 0000000000001cd8 R14: 1ffff1100448652a R15: ffff888022432950 FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000006eabc000 CR4: 0000000000350ef0 Call Trace: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:568 raw_spin_rq_lock kernel/sched/sched.h:1415 [inline] rq_lock kernel/sched/sched.h:1714 [inline] __schedule+0x357/0x4a60 kernel/sched/core.c:6436 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:rcu_read_lock include/linux/rcupdate.h:836 [inline] RIP: 0010:percpu_ref_put_many include/linux/percpu-refcount.h:330 [inline] RIP: 0010:percpu_ref_put include/linux/percpu-refcount.h:351 [inline] RIP: 0010:blk_queue_exit+0x1e/0x260 block/blk-core.c:363 Code: 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 55 41 54 53 50 49 89 ff e8 69 b4 02 fd 49 8d 9f 88 00 00 00 cd c5 e9 fc 4c 8d 35 00 00 00 00 48 c7 c7 e0 82 93 8e 31 f6 31 RSP: 0018:ffffc90004127820 EFLAGS: 00000293 RAX: ffffffff8490d687 RBX: ffff8880207fef88 RCX: ffff888022431e00 RDX: 0000000000000000 RSI: ffffffff8c0ae6e0 RDI: ffff8880207fef00 RBP: ffffc90004127ab0 R08: ffffffff9017d6ef R09: 1ffffffff202fadd R10: dffffc0000000000 R11: fffffbfff202fade R12: dffffc0000000000 R13: ffff88801f430010 R14: ffffc90004127a40 R15: ffff8880207fef00 blk_mq_queue_tag_busy_iter+0x8c0/0xa50 block/blk-mq-tag.c:536 blk_mq_timeout_work+0x135/0x470 block/blk-mq.c:1639 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 66 0f 1f 00 nopw (%rax) 10: 55 push %rbp 11: 41 57 push %r15 13: 41 56 push %r14 15: 41 55 push %r13 17: 41 54 push %r12 19: 53 push %rbx 1a: 50 push %rax 1b: 49 89 ff mov %rdi,%r15 1e: e8 69 b4 02 fd call 0xfd02b48c 23: 49 8d 9f 88 00 00 00 lea 0x88(%r15),%rbx * 2a: e8 cd c5 e9 fc call 0xfce9c5fc <-- trapping instruction 2f: 4c 8d 35 00 00 00 00 lea 0x0(%rip),%r14 # 0x36 36: 48 c7 c7 e0 82 93 8e mov $0xffffffff8e9382e0,%rdi 3d: 31 f6 xor %esi,%esi 3f: 31 .byte 0x31