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workqueue: cannot queue hci_cmd_timeout on wq hci5
WARNING: kernel/workqueue.c:2353 at __queue_work+0xd83/0x10d0 kernel/workqueue.c:2352, CPU#1: syz.1.3467/16105
Modules linked in:
CPU: 1 UID: 0 PID: 16105 Comm: syz.1.3467 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__queue_work+0xd9f/0x10d0 kernel/workqueue.c:2352
Code: 49 81 c7 70 01 00 00 4c 8d 35 ed d0 ee 0e 48 89 f8 48 c1 e8 03 80 3c 18 00 74 05 e8 0b b9 a9 00 49 8b 75 18 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8
RSP: 0018:ffffc90000a18bc0 EFLAGS: 00010046
RAX: 1ffff1100f5ae14e RBX: dffffc0000000000 RCX: ffff888052513e80
RDX: ffff88802bc72170 RSI: ffffffff8ad75aa0 RDI: ffffffff907d38a0
RBP: 0000000000010000 R08: 0000000000000100 R09: 1ffffffff20f4c4f
R10: dffffc0000000000 R11: ffffffff818e6ed0 R12: 0000000000000008
R13: ffff88807ad70a58 R14: ffffffff907d38a0 R15: ffff88802bc72170
FS: 00007f688ee576c0(0000) GS:ffff888124dc7000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fea4e0b04a1 CR3: 0000000077bbe000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000063235cd5
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers kernel/time/timer.c:2374 [inline]
__run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2386
run_timer_base kernel/time/timer.c:2395 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 70 bc 43 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 02 27 f2 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d b7 33 da
RSP: 0018:ffffc9000208f7c8 EFLAGS: 00000282
RAX: 760159feb5b76b00 RBX: 0000000000000001 RCX: 0000000000000046
RDX: ffff888052514a80 RSI: ffffffff8e69f5c6 RDI: ffffffff8c6dad80
RBP: ffff888052513e80 R08: ffffc9000208f5e8 R09: 0000000000000020
R10: ffffc9000208f8f8 R11: ffffffff81a3d910 R12: ffff88802bc72140
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4111
__flush_workqueue+0x148/0x1470 kernel/workqueue.c:4153
drain_workqueue+0xce/0x380 kernel/workqueue.c:4317
hci_dev_close_sync+0x606/0x10c0 net/bluetooth/hci_sync.c:5603
hci_dev_do_close+0x30/0xc0 net/bluetooth/hci_core.c:502
hci_rfkill_set_block+0x1f4/0x290 net/bluetooth/hci_core.c:893
rfkill_set_block+0x19f/0x4d0 net/rfkill/core.c:360
rfkill_fop_write+0x43b/0x560 net/rfkill/core.c:1316
vfs_write+0x296/0xba0 fs/read_write.c:685
ksys_write+0x150/0x270 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f688df9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f688ee57028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f688e225fa0 RCX: 00007f688df9e159
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007f688e03506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f688e226038 R14: 00007f688e225fa0 R15: 00007f688e34fa48
----------------
Code disassembly (best guess):
0: 49 81 c7 70 01 00 00 add $0x170,%r15
7: 4c 8d 35 ed d0 ee 0e lea 0xeeed0ed(%rip),%r14 # 0xeeed0fb
e: 48 89 f8 mov %rdi,%rax
11: 48 c1 e8 03 shr $0x3,%rax
15: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
19: 74 05 je 0x20
1b: e8 0b b9 a9 00 call 0xa9b92b
20: 49 8b 75 18 mov 0x18(%r13),%rsi
24: 4c 89 f7 mov %r14,%rdi
27: 4c 89 fa mov %r15,%rdx
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 4c 89 e8 mov %r13,%rax
32: 48 c1 e8 03 shr $0x3,%rax
36: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
3a: 74 08 je 0x44
3c: 4c 89 ef mov %r13,%rdi
3f: e8 .byte 0xe8