------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci0 WARNING: CPU: 0 PID: 6780 at kernel/workqueue.c:2258 __queue_work+0xe38/0x1230 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 6780 Comm: syz.0.44 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #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: ffff0000d8b26000 x25: dfff800000000000 x24: 0000000000000008 x23: ffff0000d8b261c0 x22: 0000000000000100 x21: 1fffe0001b164c38 x20: ffff80009282a000 x19: ffff0000ca168948 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008adbe9e4 x15: 0000000000000001 x14: 1fffe0003386aae2 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60003386aae3 x10: 0000000000ff0100 x9 : 82099d72bc363b00 x8 : 82099d72bc363b00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080007478 x4 : ffff80008f415ba0 x3 : ffff8000807b4b68 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:1789 expire_timers kernel/time/timer.c:1835 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x54c/0x76c kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2445 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:81 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 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:584 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:598 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:603 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 rcu_read_unlock_sched include/linux/rcupdate.h:955 [inline] (P) pfn_valid+0x3e4/0x458 include/linux/mmzone.h:2127 (P) page_table_check_clear+0x34/0x570 mm/page_table_check.c:70 __page_table_check_pte_clear+0xa0/0xc0 mm/page_table_check.c:154 page_table_check_pte_clear include/linux/page_table_check.h:51 [inline] __ptep_get_and_clear_anysz arch/arm64/include/asm/pgtable.h:1401 [inline] __ptep_get_and_clear arch/arm64/include/asm/pgtable.h:1421 [inline] __clear_full_ptes arch/arm64/include/asm/pgtable.h:1428 [inline] clear_full_ptes arch/arm64/include/asm/pgtable.h:1824 [inline] zap_present_folio_ptes mm/memory.c:1514 [inline] zap_present_ptes mm/memory.c:1586 [inline] do_zap_pte_range mm/memory.c:1687 [inline] zap_pte_range mm/memory.c:1731 [inline] zap_pmd_range mm/memory.c:1823 [inline] zap_pud_range mm/memory.c:1852 [inline] zap_p4d_range mm/memory.c:1873 [inline] unmap_page_range+0x2778/0x3168 mm/memory.c:1894 unmap_single_vma mm/memory.c:1940 [inline] unmap_vmas+0x264/0x3d4 mm/memory.c:1984 exit_mmap+0x1bc/0xbec mm/mmap.c:1284 __mmput+0xec/0x3dc kernel/fork.c:1380 mmput+0x70/0xac kernel/fork.c:1402 exit_mm+0x13c/0x200 kernel/exit.c:589 do_exit+0x470/0x1998 kernel/exit.c:940 do_group_exit+0x194/0x22c kernel/exit.c:1102 get_signal+0x11dc/0x12f8 kernel/signal.c:3034 do_signal+0x274/0x4438 arch/arm64/kernel/signal.c:1615 do_notify_resume+0xac/0x1ec arch/arm64/kernel/entry-common.c:148 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xb4/0x17c arch/arm64/kernel/entry-common.c:768 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 1187 hardirqs last enabled at (1186): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1186): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (1187): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (1187): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (1156): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (1156): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (1175): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---