syzbot

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workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: kernel/workqueue.c:2298 at __queue_work+0xfd4/0x136c kernel/workqueue.c:2296, CPU#0: syz.8.732/8225
Modules linked in:
CPU: 0 UID: 0 PID: 8225 Comm: syz.8.732 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __queue_work+0xfd4/0x136c kernel/workqueue.c:2296
lr : __queue_work+0xfd4/0x136c kernel/workqueue.c:2296
sp : ffff80008e987b10
x29: ffff80008e987b50 x28: dfff800000000000 x27: ffff700011d30f84
x26: ffff0000d8306800 x25: 0000000000000008 x24: ffff0000d83069c0
x23: dfff800000000000 x22: ffff0000d8c25708 x21: ffff800089fbf000
x20: ffff0000f5190a70 x19: ffff0000f5190a58 x18: 0000000000000000
x17: ffff80011d69a000 x16: ffff80008e980000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000ff0100 x9 : fc664b21a835fa00
x8 : fc664b21a835fa00 x7 : ffff80008047db60 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f238c
x2 : 0000000100000100 x1 : ffff0000d8c25700 x0 : 0000000000000000
Call trace:
 __queue_work+0xfd4/0x136c kernel/workqueue.c:2296 (P)
 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2539
 call_timer_fn+0x194/0xa3c kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2374 [inline]
 __run_timer_base+0x554/0x74c kernel/time/timer.c:2386
 run_timer_base+0x84/0x1b8 kernel/time/timer.c:2395
 run_timer_softirq+0x20/0x48 kernel/time/timer.c:2405
 handle_softirqs+0x2e4/0xd34 kernel/softirq.c:622
 __do_softirq+0x14/0x20 kernel/softirq.c:656
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 invoke_softirq kernel/softirq.c:503 [inline]
 __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
 __el1_irq arch/arm64/kernel/entry-common.c:510 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:522
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:527
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590
 preempt_count arch/arm64/include/asm/preempt.h:12 [inline] (P)
 check_kcov_mode+0x8/0x58 kernel/kcov.c:183 (P)
 hrtimer_start_range_ns+0x4c/0xac0 kernel/time/hrtimer.c:1473
 hrtimer_start_expires include/linux/hrtimer.h:234 [inline]
 hrtimer_sleeper_start_expires+0x6c/0x80 kernel/time/hrtimer.c:2216
 futex_do_wait+0x38/0x14c kernel/futex/waitwake.c:345
 __futex_wait+0x128/0x258 kernel/futex/waitwake.c:691
 futex_wait+0x108/0x2b0 kernel/futex/waitwake.c:719
 do_futex+0x2fc/0x354 kernel/futex/syscalls.c:130
 __do_sys_futex kernel/futex/syscalls.c:207 [inline]
 __se_sys_futex kernel/futex/syscalls.c:188 [inline]
 __arm64_sys_futex+0x2d4/0x3f8 kernel/futex/syscalls.c:188
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 3679
hardirqs last  enabled at (3678): [<ffff8000867cddb0>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:187 [inline]
hardirqs last  enabled at (3678): [<ffff8000867cddb0>] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:206
hardirqs last disabled at (3679): [<ffff8000867cdbc8>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:140 [inline]
hardirqs last disabled at (3679): [<ffff8000867cdbc8>] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:174
softirqs last  enabled at (3654): [<ffff800080137de0>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (3654): [<ffff800080137de0>] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline]
softirqs last  enabled at (3654): [<ffff800080137de0>] do_sve_acc+0x32c/0x4b8 arch/arm64/kernel/fpsimd.c:1349
softirqs last disabled at (3669): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---