------------[ cut here ]------------ WARNING: CPU: 0 PID: 8667 at kernel/workqueue.c:2257 __queue_work+0xc3a/0x1080 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 8667 Comm: syz-executor Not tainted 6.12.0-rc4-syzkaller-gc2ee9f594da8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__queue_work+0xc3a/0x1080 kernel/workqueue.c:2256 Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 ff 33 97 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 70 e1 35 00 85 db 75 60 e8 27 df 35 00 90 <0f> 0b 90 e9 f9 f7 ff ff e8 19 df 35 00 90 0f 0b 90 e9 a8 f7 ff ff RSP: 0018:ffffc90000007bf0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff8156d8d1 RDX: ffff88806b01bc00 RSI: ffffffff8156d929 RDI: 0000000000000005 RBP: ffff888025d1c930 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000000 R12: 1ffff92000000f90 R13: 0000000000000001 R14: 0000000000000100 R15: ffff88807eb90000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc49fd370d2 CR3: 000000000db7c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1840 [inline] __run_timers+0x56a/0x930 kernel/time/timer.c:2419 __run_timer_base kernel/time/timer.c:2430 [inline] __run_timer_base kernel/time/timer.c:2423 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2439 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449 handle_softirqs+0x213/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5790 Code: b8 ff ff ff ff 65 0f c1 05 70 47 98 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffffc9000b2576e8 EFLAGS: 00000206 RAX: 0000000000000046 RBX: 1ffff9200164aede RCX: 0000000000000001 RDX: 0000000000000001 RSI: ffffffff8b4ccc60 RDI: ffffffff8bb12d60 RBP: 0000000000000200 R08: 000000000011fce8 R09: fffffbfff2d65374 R10: ffffffff96b29ba7 R11: 00000000000a2001 R12: 0000000000000000 R13: ffff88807eb90148 R14: 0000000000000000 R15: 0000000000000000 touch_wq_lockdep_map+0xad/0x1c0 kernel/workqueue.c:3880 __flush_workqueue+0x129/0x1200 kernel/workqueue.c:3922 drain_workqueue+0x18f/0x3d0 kernel/workqueue.c:4086 hci_dev_close_sync+0x2dc/0x11d0 net/bluetooth/hci_sync.c:5181 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483 hci_unregister_dev+0x213/0x620 net/bluetooth/hci_core.c:2698 vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:664 __fput+0x3f6/0xb60 fs/file_table.c:431 task_work_run+0x14e/0x250 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xadd/0x2d70 kernel/exit.c:939 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088 get_signal+0x2658/0x26d0 kernel/signal.c:2917 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0fe677fd8c Code: Unable to access opcode bytes at 0x7f0fe677fd62. RSP: 002b:00007ffc81dcfde0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: 0000000000000058 RBX: 00007f0fe7464620 RCX: 00007f0fe677fd8c RDX: 0000000000000058 RSI: 00007f0fe7464670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffc81dcfe34 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f0fe7464670 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: b8 ff ff ff ff mov $0xffffffff,%eax 5: 65 0f c1 05 70 47 98 xadd %eax,%gs:0x7e984770(%rip) # 0x7e98477d c: 7e d: 83 f8 01 cmp $0x1,%eax 10: 0f 85 d0 01 00 00 jne 0x1e6 16: 9c pushf 17: 58 pop %rax 18: f6 c4 02 test $0x2,%ah 1b: 0f 85 e5 01 00 00 jne 0x206 21: 48 85 ed test %rbp,%rbp 24: 0f 85 b6 01 00 00 jne 0x1e0 * 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 31: fc ff df 34: 48 01 c3 add %rax,%rbx 37: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 3e: 48 rex.W 3f: c7 .byte 0xc7