------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci2 WARNING: CPU: 1 PID: 8764 at kernel/workqueue.c:2258 __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 Modules linked in: CPU: 1 UID: 0 PID: 8764 Comm: syz.7.466 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 lr : __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 sp : ffff800097937b20 x29: ffff800097937b70 x28: dfff800000000000 x27: ffff700012f26f84 x26: 0000000000000008 x25: dfff800000000000 x24: ffff0000d1423800 x23: ffff0000d14239c0 x22: 0000000000000100 x21: 1fffe0001a284738 x20: ffff800092bf9000 x19: ffff0000f6d8c990 x18: 1fffe000337dfe90 x17: ffff80010ca32000 x16: ffff800082de9540 x15: 0000000000000001 x14: 1fffe000337dfefa x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000337dfefb x10: 0000000000ff0100 x9 : f7425e5802345200 x8 : f7425e5802345200 x7 : ffff8000805638d4 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807d4f2c x2 : 0000000000000001 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: __queue_work+0xe10/0x1210 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:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____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:503 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723 irq_exit_rcu+0x14/0x84 kernel/softirq.c:739 __el1_irq arch/arm64/kernel/entry-common.c:520 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:532 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:537 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) lock_acquire+0x178/0x2e0 kernel/locking/lockdep.c:5871 (P) rcu_lock_acquire+0x38/0x44 include/linux/rcupdate.h:331 rcu_read_lock_sched include/linux/rcupdate.h:958 [inline] pfn_valid+0xe0/0x2c8 include/linux/mmzone.h:2187 lowmem_page_address include/linux/mm.h:2318 [inline] kmap_local_page include/linux/highmem-internal.h:188 [inline] clear_highpage_kasan_tagged include/linux/highmem.h:246 [inline] kernel_init_pages mm/page_alloc.c:1227 [inline] post_alloc_hook+0x214/0x2d8 mm/page_alloc.c:1848 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2494/0x2624 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x17c/0x318 mm/page_alloc.c:5183 alloc_pages_mpol+0x1e4/0x460 mm/mempolicy.c:2416 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline] alloc_pages_noprof+0xe0/0x308 mm/mempolicy.c:2507 folio_alloc_noprof+0x2c/0x14c mm/mempolicy.c:2517 filemap_alloc_folio_noprof+0xc4/0x3ac mm/filemap.c:1020 ractl_alloc_folio mm/readahead.c:189 [inline] page_cache_ra_unbounded+0x36c/0xa40 mm/readahead.c:275 do_page_cache_ra mm/readahead.c:332 [inline] page_cache_ra_order+0xa18/0xee0 mm/readahead.c:535 page_cache_async_ra+0x7c4/0xbe0 mm/readahead.c:697 do_async_mmap_readahead mm/filemap.c:3376 [inline] filemap_fault+0x5b8/0x1304 mm/filemap.c:3475 __do_fault+0x138/0x390 mm/memory.c:5280 do_read_fault mm/memory.c:5698 [inline] do_fault mm/memory.c:5832 [inline] do_pte_missing mm/memory.c:4361 [inline] handle_pte_fault mm/memory.c:6177 [inline] __handle_mm_fault mm/memory.c:6318 [inline] handle_mm_fault+0x2abc/0x4d80 mm/memory.c:6487 faultin_page mm/gup.c:1126 [inline] __get_user_pages+0x1f4c/0x2d94 mm/gup.c:1428 __get_user_pages_locked mm/gup.c:1692 [inline] get_dump_page+0x168/0x374 mm/gup.c:2192 dump_user_range+0x184/0x8dc fs/coredump.c:1366 elf_core_dump+0x29ec/0x2fbc fs/binfmt_elf.c:2111 coredump_write+0x1084/0x1900 fs/coredump.c:1049 vfs_coredump+0x182c/0x2354 fs/coredump.c:1170 get_signal+0xe38/0x12f8 kernel/signal.c:3019 arch_do_signal_or_restart+0x274/0x4414 arch/arm64/kernel/signal.c:1619 exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:747 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 31857 hardirqs last enabled at (31856): [] handle_softirqs+0x1f4/0xc88 kernel/softirq.c:606 hardirqs last disabled at (31857): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (31857): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (30886): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (30886): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (31855): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun