usb-storage 1-1:0.0: USB Mass Storage device detected usb 1-1: USB disconnect, device number 12 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 5237 at kernel/locking/lockdep.c:231 hlock_class kernel/locking/lockdep.c:231 [inline] WARNING: CPU: 1 PID: 5237 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4772 [inline] WARNING: CPU: 1 PID: 5237 at kernel/locking/lockdep.c:231 __lock_acquire+0x58c/0x2040 kernel/locking/lockdep.c:5092 Modules linked in: CPU: 1 UID: 0 PID: 5237 Comm: kworker/1:3 Not tainted 6.11.0-rc5-syzkaller-00219-g1934261d8974 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: events nsim_dev_trap_report_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 c5 c8 a8 0e 00 75 23 90 48 c7 c7 00 d4 0a 8c 48 c7 c6 a0 d6 0a 8c e8 7f 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:ffffc900049af4b0 EFLAGS: 00010046 RAX: a8716d57209e1200 RBX: 0000000000000f98 RCX: ffff888062f93c00 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000000000f R08: ffffffff8155b2f2 R09: 1ffff1101712519a R10: dffffc0000000000 R11: ffffed101712519b R12: ffff888062f93c00 R13: 0000000000000f98 R14: 1ffff1100c5f28ef R15: ffff888062f94778 FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002002a000 CR3: 0000000077fb8000 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:nsim_dev_trap_report drivers/net/netdevsim/dev.c:785 [inline] RIP: 0010:nsim_dev_trap_report_work+0x159/0xaa0 drivers/net/netdevsim/dev.c:850 Code: 74 08 4c 89 f7 e8 97 02 e5 fa 49 8b 1e 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 7a 02 e5 fa 48 8b 1b <48> 89 df e8 3f 04 7b 03 48 89 84 24 80 00 00 00 48 8d 7b 10 48 89 RSP: 0018:ffffc900049afae8 EFLAGS: 00000246 RAX: 1ffff1100bd01199 RBX: ffff88807e5e7360 RCX: ffff888062f93c00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88806f4dc800 R08: ffffffff8715d466 R09: 1ffff1100bd01015 R10: dffffc0000000000 R11: ffffed100bd01016 R12: ffff88807e5e7408 R13: dffffc0000000000 R14: ffff88806f4dc9e0 R15: ffffffff815e6ba5 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389 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: 74 08 je 0xa 2: 4c 89 f7 mov %r14,%rdi 5: e8 97 02 e5 fa call 0xfae502a1 a: 49 8b 1e mov (%r14),%rbx d: 48 83 c3 08 add $0x8,%rbx 11: 48 89 d8 mov %rbx,%rax 14: 48 c1 e8 03 shr $0x3,%rax 18: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 1d: 74 08 je 0x27 1f: 48 89 df mov %rbx,%rdi 22: e8 7a 02 e5 fa call 0xfae502a1 27: 48 8b 1b mov (%rbx),%rbx * 2a: 48 89 df mov %rbx,%rdi <-- trapping instruction 2d: e8 3f 04 7b 03 call 0x37b0471 32: 48 89 84 24 80 00 00 mov %rax,0x80(%rsp) 39: 00 3a: 48 8d 7b 10 lea 0x10(%rbx),%rdi 3e: 48 rex.W 3f: 89 .byte 0x89