------------[ cut here ]------------ WARNING: CPU: 1 PID: 9872 at kernel/workqueue.c:1453 __queue_work+0xbaf/0xd00 Modules linked in: CPU: 1 PID: 9872 Comm: syz-executor Not tainted 5.15.161-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:__queue_work+0xbaf/0xd00 kernel/workqueue.c:1453 Code: 7c 24 10 e8 63 68 77 00 e9 1c fd ff ff e8 09 9a 2d 00 89 ee 48 c7 c7 20 17 7d 8c e8 8b cf d7 02 e9 64 fc ff ff e8 f1 99 2d 00 <0f> 0b 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 db 99 2d 00 RSP: 0018:ffffc90000dd0b18 EFLAGS: 00010046 RAX: ffffffff8152c0df RBX: 00000000000b0012 RCX: ffff88807e39d940 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000010000 R08: ffffffff8153a335 R09: fffffbfff1bc8d86 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888012b1f800 R14: 0000000000000008 R15: 0000000100004c01 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fef10a77a6c CR3: 000000007599d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1491 [inline] __run_timers+0x6a8/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5627 Code: 2b 00 74 08 4c 89 f7 e8 0c 7e 67 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc90002f97820 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff920005f2f10 RCX: ffffffff913f0f03 RDX: dffffc0000000000 RSI: ffffffff8a8b3ca0 RDI: ffffffff8ad8f740 RBP: ffffc90002f97968 R08: dffffc0000000000 R09: fffffbfff2193244 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920005f2f0c R13: dffffc0000000000 R14: ffffc90002f97880 R15: 0000000000000246 flush_workqueue+0x170/0x1610 kernel/workqueue.c:2830 drain_workqueue+0xc5/0x390 kernel/workqueue.c:2995 hci_dev_do_close+0x420/0x1070 net/bluetooth/hci_core.c:1780 hci_unregister_dev+0x2a7/0x550 net/bluetooth/hci_core.c:4036 vhci_release+0x73/0xc0 drivers/bluetooth/hci_vhci.c:345 __fput+0x3bf/0x890 fs/file_table.c:280 task_work_run+0x129/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x6a3/0x2480 kernel/exit.c:872 do_group_exit+0x144/0x310 kernel/exit.c:994 __do_sys_exit_group kernel/exit.c:1005 [inline] __se_sys_exit_group kernel/exit.c:1003 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1003 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f30b0c5bf19 Code: Unable to access opcode bytes at RIP 0x7f30b0c5beef. RSP: 002b:00007ffe71eecd28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f30b0cc96cf RCX: 00007f30b0c5bf19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000016 R08: 00007ffe71eeaac6 R09: 00007ffe71eedfe0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe71eedfe0 R13: 00007f30b0cc965d R14: 00005555559684a8 R15: 0000000000000006 ---------------- Code disassembly (best guess): 0: 2b 00 sub (%rax),%eax 2: 74 08 je 0xc 4: 4c 89 f7 mov %r14,%rdi 7: e8 0c 7e 67 00 call 0x677e18 c: f6 44 24 61 02 testb $0x2,0x61(%rsp) 11: 0f 85 84 01 00 00 jne 0x19b 17: 41 f7 c7 00 02 00 00 test $0x200,%r15d 1e: 74 01 je 0x21 20: fb sti 21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp) 28: e0 45 * 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction 31: 00 00 33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1) 3a: 00 00 3c: 43 rex.XB 3d: c7 .byte 0xc7 3e: 44 rex.R 3f: 25 .byte 0x25