------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci2 WARNING: CPU: 0 PID: 43 at kernel/workqueue.c:2258 __queue_work+0xe38/0x1230 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 43 Comm: pr/ttyAMA0 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __queue_work+0xe38/0x1230 kernel/workqueue.c:2256 lr : __queue_work+0xe38/0x1230 kernel/workqueue.c:2256 sp : ffff800080007b20 x29: ffff800080007b70 x28: dfff800000000000 x27: ffff700010000f84 x26: ffff0000c9d93800 x25: dfff800000000000 x24: 0000000000000008 x23: ffff0000c9d939c0 x22: 0000000000000100 x21: 1fffe000193b2738 x20: ffff800092c65000 x19: ffff0000c81a0988 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008af01c68 x15: 0000000000000001 x14: 1fffe000337d1ce2 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000337d1ce3 x10: 0000000000ff0100 x9 : 5b27d2c256472b00 x8 : 5b27d2c256472b00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080007478 x4 : ffff80008f776bc0 x3 : ffff8000807bba4c x2 : 0000000000000001 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: __queue_work+0xe38/0x1230 kernel/workqueue.c:2256 (P) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2487 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1793 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x54c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 invoke_softirq kernel/softirq.c:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __el1_irq arch/arm64/kernel/entry-common.c:654 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:668 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:673 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 (P) spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline] pl011_console_device_unlock+0x90/0xc8 drivers/tty/serial/amba-pl011.c:2603 nbcon_emit_one kernel/printk/nbcon.c:1123 [inline] nbcon_kthread_func+0x588/0x6cc kernel/printk/nbcon.c:1210 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 26183 hardirqs last enabled at (26182): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:86 [inline] hardirqs last enabled at (26182): [] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:96 hardirqs last disabled at (26183): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (26183): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (26026): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (26026): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (26179): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---