WARNING: lock held when returning to user space! (3)

WARNING: lock held when returning to user space! (3)

Status: closed as dup on 2019/01/02 11:24
Reported-by: syzbot+42e36e1ae3de3f22a7ed@syzkaller.appspotmail.com
First crash: 2507d, last: 2507d

▶ ▼ Duplicate of

Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported
WARNING: lock held when returning to user space in set_property_atomic dri	4	C			145	2493d	2507d

▶ ▼ Discussions (1)

Title	Replies (including bot)	Last reply
WARNING: lock held when returning to user space! (3)	1 (2)	2019/01/02 11:24

▶ ▼ Similar bugs (3)

Kernel	Title	Rank 🛈	Repro	Count	Last	Reported	Patched	Status
linux-4.14	WARNING: lock held when returning to user space!	4	C	2	986d	1121d	0/1	upstream: reported C repro on 2022/10/15 19:00
upstream	WARNING: lock held when returning to user space! (2) net	4	C	9	2741d	2742d	8/29	fixed on 2018/07/09 18:05
upstream	WARNING: lock held when returning to user space! block	4	C	40	2760d	2775d	5/29	fixed on 2018/05/08 18:30

Sample crash report:

RBP: 00000000006cf018 R08: 0000000000000001 R09: 0000000000000032
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000

================================================
WARNING: lock held when returning to user space!
4.20.0+ #395 Not tainted
------------------------------------------------
syz-executor520/8085 is leaving the kernel with locks still held!

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2018/12/29 22:08	upstream	903b77c63167	a40793d7	.config	console log	report	syz	C			ci-upstream-kasan-gce
2018/12/29 22:09	upstream	903b77c63167	a40793d7	.config	console log	report	syz	C			ci-upstream-kasan-gce-386

* ~~Struck through~~ repros no longer work on HEAD.