WARNING: locking bug in nci_close

Title	Replies (including bot)	Last reply
Re: [syzbot] WARNING: locking bug in nci_close_device	1 (1)	2023/12/08 13:30
[syzbot] WARNING: locking bug in nci_close_device	0 (1)	2023/02/03 15:25

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING: locking bug in nci_close_device (2) net nfc	C			11	10d	26d	0/26	upstream: reported C repro on 2024/03/30 11:02

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DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 1 PID: 5158 at kernel/locking/lockdep.c:231 hlock_class kernel/locking/lockdep.c:231 [inline]
WARNING: CPU: 1 PID: 5158 at kernel/locking/lockdep.c:231 hlock_class kernel/locking/lockdep.c:220 [inline]
WARNING: CPU: 1 PID: 5158 at kernel/locking/lockdep.c:231 check_deadlock kernel/locking/lockdep.c:3016 [inline]
WARNING: CPU: 1 PID: 5158 at kernel/locking/lockdep.c:231 validate_chain kernel/locking/lockdep.c:3818 [inline]
WARNING: CPU: 1 PID: 5158 at kernel/locking/lockdep.c:231 __lock_acquire+0x2679/0x56d0 kernel/locking/lockdep.c:5055
Modules linked in:
CPU: 1 PID: 5158 Comm: kworker/1:5 Not tainted 6.2.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: events rfkill_sync_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:231 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:220 [inline]
RIP: 0010:check_deadlock kernel/locking/lockdep.c:3016 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3818 [inline]
RIP: 0010:__lock_acquire+0x2679/0x56d0 kernel/locking/lockdep.c:5055
Code: c0 03 38 d0 7c 08 84 d2 0f 85 00 2b 00 00 83 3d c4 5e 0f 0d 00 75 c6 48 c7 c6 a0 51 4c 8a 48 c7 c7 00 4b 4c 8a e8 31 00 5c 08 <0f> 0b 31 c0 e9 6a fe ff ff e8 f9 b7 a4 02 89 c3 e8 82 5d ff ff 85
RSP: 0018:ffffc900047bf858 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffffffff91342f60 RCX: 0000000000000000
RDX: ffff888025f69d40 RSI: ffffffff816680ec RDI: fffff520008f7efd
RBP: ffff888025f6a778 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff888025f6a840
R13: 0000000000000dd1 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555aaa848 CR3: 000000007ec38000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5668 [inline]
 lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633
 __flush_workqueue+0x118/0x13a0 kernel/workqueue.c:2809
 nci_close_device+0xcb/0x370 net/nfc/nci/core.c:567
 nfc_dev_down+0x19a/0x2d0 net/nfc/core.c:161
 nfc_rfkill_set_block+0x33/0xd0 net/nfc/core.c:179
 rfkill_set_block+0x1f9/0x540 net/rfkill/core.c:345
 rfkill_sync_work+0x8e/0xc0 net/rfkill/core.c:1042
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x669/0x1090 kernel/workqueue.c:2436
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>