------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci1 WARNING: kernel/workqueue.c:2297 at __queue_work+0xcee/0x1270 kernel/workqueue.c:2296, CPU#1: kworker/1:2/805 Modules linked in: CPU: 1 UID: 0 PID: 805 Comm: kworker/1:2 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Workqueue: events cleanup_vm_area_work RIP: 0010:__queue_work+0xcf2/0x1270 kernel/workqueue.c:2296 Code: 00 00 00 fc ff df 49 8d 94 24 70 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 3d 05 00 00 48 8d 3d 72 06 0b 0f 48 8b 75 18 <67> 48 0f b9 3a 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 RSP: 0000:ffffc90000a08bd0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff1101203f14e RDX: ffff88807c0f9970 RSI: ffffffff8a7eb600 RDI: ffffffff90da2080 RBP: ffff8880901f8a58 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000000 R12: ffff88807c0f9800 R13: 1ffff9200014118d R14: ffffffff81cf1fa0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888124483000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32219ff8 CR3: 00000000a428b000 CR4: 00000000003526f0 DR0: 0000000000000009 DR1: 00000000000000c9 DR2: 00000000000000f3 DR3: 00000000000000c0 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x19a/0x640 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1794 [inline] __run_timers+0x583/0xaf0 kernel/time/timer.c:2374 __run_timer_base kernel/time/timer.c:2386 [inline] __run_timer_base kernel/time/timer.c:2378 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2395 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405 handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:198 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 2d 58 f6 48 89 df e8 9e 7d 58 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 b5 49 48 f6 65 8b 05 9e 6d 7d 08 85 c0 74 16 5b RSP: 0000:ffffc90004a979a8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffffff9b3bda28 RCX: 0000000000000040 RDX: 0000000000000000 RSI: ffffffff8df0f8f1 RDI: ffffffff8c1c4680 RBP: 0000000000000286 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a5642000 __debug_check_no_obj_freed lib/debugobjects.c:1135 [inline] debug_check_no_obj_freed+0x31f/0x630 lib/debugobjects.c:1156 __free_pages_prepare mm/page_alloc.c:1404 [inline] __free_frozen_pages+0x3fc/0x10a0 mm/page_alloc.c:2938 vfree mm/vmalloc.c:3472 [inline] vfree+0x15f/0x8d0 mm/vmalloc.c:3436 cleanup_vm_area_work+0x4c/0x100 mm/vmalloc.c:3775 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314 process_scheduled_works kernel/workqueue.c:3397 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 fc add %bh,%ah 4: ff lcall (bad) 5: df 49 8d fisttps -0x73(%rcx) 8: 94 xchg %eax,%esp 9: 24 70 and $0x70,%al b: 01 00 add %eax,(%rax) d: 00 48 89 add %cl,-0x77(%rax) 10: f9 stc 11: 48 c1 e9 03 shr $0x3,%rcx 15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 19: 0f 85 3d 05 00 00 jne 0x55c 1f: 48 8d 3d 72 06 0b 0f lea 0xf0b0672(%rip),%rdi # 0xf0b0698 26: 48 8b 75 18 mov 0x18(%rbp),%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 36: fc ff df 39: 48 89 ea mov %rbp,%rdx 3c: 48 c1 ea 03 shr $0x3,%rdx