syzbot

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workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: CPU: 0 PID: 6662 at kernel/workqueue.c:2258 __queue_work+0xe38/0x1230 kernel/workqueue.c:2256
Modules linked in:
CPU: 0 UID: 0 PID: 6662 Comm: syz.2.8 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: ffff0000c7135000 x25: dfff800000000000 x24: 0000000000000008
x23: ffff0000c71351c0 x22: 0000000000000100 x21: 1fffe00018e26a38
x20: ffff800092c65000 x19: ffff0000c98c8988 x18: 00000000ffffffff
x17: ffff800093376000 x16: ffff80008052b68c x15: 0000000000000001
x14: 1ffff00011f0bdac x13: 0000000000000000 x12: 0000000000000000
x11: ffff700011f0bdad x10: 0000000000ff0100 x9 : c806e98df3697b00
x8 : c806e98df3697b00 x7 : ffff800080550d3c x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008052b794
x2 : 0000000000000001 x1 : 0000000100000102 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
 preempt_count arch/arm64/include/asm/preempt.h:13 [inline] (P)
 check_kcov_mode kernel/kcov.c:183 [inline] (P)
 __sanitizer_cov_trace_pc+0x14/0x84 kernel/kcov.c:217 (P)
 check_preemption_disabled+0x30/0xe4 lib/smp_processor_id.c:16
 debug_smp_processor_id+0x20/0x2c lib/smp_processor_id.c:60
 rcu_lockdep_current_cpu_online+0x7c/0x1dc kernel/rcu/tree.c:3998
 rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
 rcu_read_lock_held+0x20/0x50 kernel/rcu/update.c:349
 lookup_page_ext mm/page_ext.c:254 [inline]
 page_ext_lookup+0xec/0x164 mm/page_ext.c:520
 page_ext_iter_begin include/linux/page_ext.h:132 [inline]
 page_table_check_clear+0x258/0x570 mm/page_table_check.c:78
 __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:1394 [inline]
 __ptep_get_and_clear arch/arm64/include/asm/pgtable.h:1414 [inline]
 __clear_full_ptes arch/arm64/include/asm/pgtable.h:1421 [inline]
 clear_full_ptes arch/arm64/include/asm/pgtable.h:1817 [inline]
 zap_present_folio_ptes mm/memory.c:1518 [inline]
 zap_present_ptes mm/memory.c:1590 [inline]
 do_zap_pte_range mm/memory.c:1691 [inline]
 zap_pte_range mm/memory.c:1735 [inline]
 zap_pmd_range mm/memory.c:1827 [inline]
 zap_pud_range mm/memory.c:1856 [inline]
 zap_p4d_range mm/memory.c:1877 [inline]
 unmap_page_range+0x2790/0x3180 mm/memory.c:1898
 unmap_single_vma mm/memory.c:1941 [inline]
 unmap_vmas+0x264/0x3d4 mm/memory.c:1985
 exit_mmap+0x1bc/0xabc mm/mmap.c:1284
 __mmput+0xec/0x3dc kernel/fork.c:1121
 mmput+0x70/0xac kernel/fork.c:1144
 exit_mm+0x13c/0x200 kernel/exit.c:581
 do_exit+0x4bc/0x19fc kernel/exit.c:952
 do_group_exit+0x194/0x22c kernel/exit.c:1105
 get_signal+0x11dc/0x12f8 kernel/signal.c:3034
 do_signal+0x274/0x4434 arch/arm64/kernel/signal.c:1618
 do_notify_resume+0xb0/0x1f4 arch/arm64/kernel/entry-common.c:152
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline]
 el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 7087
hardirqs last  enabled at (7086): [<ffff8000803ce4f8>] handle_softirqs+0x1f4/0xc88 kernel/softirq.c:563
hardirqs last disabled at (7087): [<ffff80008af2319c>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
hardirqs last disabled at (7087): [<ffff80008af2319c>] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170
softirqs last  enabled at (6996): [<ffff8000803cedfc>] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last  enabled at (6996): [<ffff8000803cedfc>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607
softirqs last disabled at (7085): [<ffff800080020efc>] __do_softirq+0x14/0x20 kernel/softirq.c:613
---[ end trace 0000000000000000 ]---
vkms_vblank_simulate: vblank timer overrun