KCSAN: data-race in io_sq_thread / io_sq_thread

Title	Replies (including bot)	Last reply
[syzbot] [io-uring?] KCSAN: data-race in io_sq_thread / io_sq_thread_park (9)	2 (4)	2024/08/13 12:17
[PATCH] io_uring/sqpoll: annotate debug task == current with data_race()	1 (1)	2024/08/13 12:16

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[syzbot] [io-uring?] KCSAN: data-race in io_sq_thread / io_sq_thread_park (9)

2 (4)

2024/08/13 12:17

[PATCH] io_uring/sqpoll: annotate debug task == current with data_race()

1 (1)

2024/08/13 12:16

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park (5) io-uring	1	498d	498d	0/27	auto-obsoleted due to no activity on 2023/06/04 19:25
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park fs	13	827d	994d	0/27	auto-closed as invalid on 2022/07/10 14:43
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park (4) io-uring	4	551d	592d	0/27	auto-obsoleted due to no activity on 2023/04/20 22:18
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park (8) io-uring	2	213d	239d	0/27	auto-obsoleted due to no activity on 2024/03/15 14:43
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park (2) io-uring	5	755d	791d	0/27	auto-closed as invalid on 2022/09/20 09:21
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park (6) io-uring	4	400d	445d	0/27	auto-obsoleted due to no activity on 2023/09/11 04:02
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park (7) io-uring	2	291d	274d	0/27	auto-obsoleted due to no activity on 2023/12/28 08:55
upstream	KCSAN: data-race in io_sq_thread / io_sq_thread_park (3) io-uring	2	688d	715d	0/27	auto-obsoleted due to no activity on 2022/11/26 22:35

================================================================== BUG: KCSAN: data-race in io_sq_thread / io_sq_thread_park write to 0xffff888111459638 of 8 bytes by task 10761 on cpu 1: io_sq_thread+0xdab/0xff0 io_uring/sqpoll.c:383 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read to 0xffff888111459638 of 8 bytes by task 10329 on cpu 0: io_sq_thread_park+0x1b/0x80 io_uring/sqpoll.c:47 io_ring_exit_work+0x197/0x500 io_uring/io_uring.c:2786 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312 worker_thread+0x526/0x700 kernel/workqueue.c:3390 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0xffff8881223d0000 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 10329 Comm: kworker/u8:8 Not tainted 6.11.0-rc2-syzkaller-00027-g6a0e38264012 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: iou_exit io_ring_exit_work ==================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/08/08 16:34	upstream	6a0e38264012	61405512	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-kcsan-gce	KCSAN: data-race in io_sq_thread / io_sq_thread_park

Crashes (1):

Assets (help?)