------------[ cut here ]------------ 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): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:187 [inline] hardirqs last enabled at (3678): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:206 hardirqs last disabled at (3679): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:140 [inline] hardirqs last disabled at (3679): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:174 softirqs last enabled at (3654): [] local_bh_enable include/linux/bottom_half.h:33 [inline] softirqs last enabled at (3654): [] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline] softirqs last enabled at (3654): [] do_sve_acc+0x32c/0x4b8 arch/arm64/kernel/fpsimd.c:1349 softirqs last disabled at (3669): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---