syzbot


KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
Status: moderation: reported on 2022/05/03 21:30
Reported-by: syzbot+dcad781df3a80a14e325@syzkaller.appspotmail.com
First crash: 49d, last: 10h25m

Sample crash report:
==================================================================
BUG: KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker

write to 0xffff888124e55b44 of 4 bytes by task 30962 on cpu 0:
 io_wq_worker_running+0x60/0xa0 fs/io-wq.c:691
 schedule_timeout+0xc1/0x290 kernel/time/timer.c:1935
 io_wqe_worker+0x396/0x940 fs/io-wq.c:659
 ret_from_fork+0x1f/0x30

read to 0xffff888124e55b44 of 4 bytes by task 30946 on cpu 1:
 io_wqe_get_acct fs/io-wq.c:173 [inline]
 io_wqe_activate_free_worker+0xf8/0x2b0 fs/io-wq.c:272
 io_wqe_enqueue+0x2f0/0x500 fs/io-wq.c:940
 io_wq_enqueue+0x31/0x40 fs/io-wq.c:973
 io_queue_iowq+0x215/0x370 fs/io_uring.c:2037
 io_queue_sqe_fallback+0x84/0xe0 fs/io_uring.c:8741
 io_submit_sqe+0x3718/0x3ac0 fs/io_uring.c:8963
 io_submit_sqes+0x27b/0x500 fs/io_uring.c:9079
 __do_sys_io_uring_enter fs/io_uring.c:12008 [inline]
 __se_sys_io_uring_enter+0x2d9/0xdd0 fs/io_uring.c:11934
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:11934
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

value changed: 0x0000000d -> 0x0000000b

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 30946 Comm: syz-executor.1 Not tainted 5.18.0-syzkaller-10037-g7e284070abe5-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (127):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-kcsan-gce 2022/05/27 08:48 upstream 7e284070abe5 116e7a7b .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/26 23:58 upstream 16477cdfefdb 3037caa9 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/26 06:23 upstream d7227785e384 3037caa9 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/24 11:49 upstream 143a6252e1b8 fcfad4ff .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/23 23:27 upstream 140e40e39a29 e7f9308d .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/23 09:21 upstream 4b0986a3613c 7268fa62 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/22 08:14 upstream eaea45fc0e7b 7268fa62 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/21 20:10 upstream 6c3f5bec9b40 7268fa62 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/21 04:25 upstream 3b5e1590a267 7268fa62 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/20 15:55 upstream 3d7285a335ed bd37ad7e .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/20 14:26 upstream 3d7285a335ed cb1ac2e7 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/20 00:58 upstream b015dcd62b86 cb1ac2e7 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/19 11:35 upstream f993aed406ea cb1ac2e7 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/19 07:00 upstream f993aed406ea 50c53f39 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/18 16:53 upstream ef1302160bfb 50c53f39 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/18 14:40 upstream 210e04ff7681 50c53f39 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/18 01:19 upstream 210e04ff7681 744a39e2 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/16 03:23 upstream 42226c989789 744a39e2 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/15 00:35 upstream 2fe1020d73ca 744a39e2 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/14 11:14 upstream ec7f49619d8e 744a39e2 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/13 23:04 upstream f2dd007445b1 107f6434 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/13 10:28 upstream f3f19f939c11 7ce5a022 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/13 09:16 upstream f3f19f939c11 9ad6612a .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/12 19:30 upstream 0ac824f379fb 9ad6612a .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/11 17:14 upstream feb9c5e19e91 beb0b407 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/11 03:03 upstream feb9c5e19e91 8d7b3b67 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 17:42 upstream 9be9ed2612b5 8b277b8e .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 10:50 upstream c5eb0a61238d 8b277b8e .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 07:48 upstream c5eb0a61238d e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 06:43 upstream c5eb0a61238d e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 05:22 upstream c5eb0a61238d e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 03:18 upstream c5eb0a61238d e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 01:56 upstream c5eb0a61238d e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/09 00:10 upstream 379c72654524 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 19:00 upstream 379c72654524 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 17:28 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 13:55 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 11:25 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 08:41 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 07:38 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 04:07 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/08 01:26 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/07 23:43 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/07 21:10 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/07 19:40 upstream 30c8e80f7932 e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/07 14:28 upstream 4b97bac0756a e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/07 13:23 upstream 4b97bac0756a e60b1103 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/03 18:33 upstream ef8e4d3c2ab1 dc9e5259 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/05/03 16:58 upstream 9050ba3a61a4 dc9e5259 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker
ci2-upstream-kcsan-gce 2022/04/07 22:34 upstream 42e7a03d3bad c6ff3e05 .config log report info KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker