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KCSAN: data-race in aio_read_events / iocb_put (3)

Status: auto-closed as invalid on 2021/11/04 18:41
Subsystems: fs
[Documentation on labels]
First crash: 1026d, last: 1020d
Similar bugs (10)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in aio_read_events / iocb_put (11) fs 1 65d 65d 0/27 auto-obsoleted due to no activity on 2024/06/16 22:57
upstream KCSAN: data-race in aio_read_events / iocb_put (7) fs 1 396d 396d 0/27 auto-obsoleted due to no activity on 2023/07/22 02:26
upstream KCSAN: data-race in aio_read_events / iocb_put (5) fs 1 812d 812d 0/27 auto-closed as invalid on 2022/06/01 10:01
upstream KCSAN: data-race in aio_read_events / iocb_put (10) fs 1 138d 138d 0/27 auto-obsoleted due to no activity on 2024/04/05 02:13
upstream KCSAN: data-race in aio_read_events / iocb_put (9) fs 2 220d 219d 0/27 auto-obsoleted due to no activity on 2024/01/14 07:58
upstream KCSAN: data-race in aio_read_events / iocb_put (6) fs 1 601d 601d 0/27 auto-obsoleted due to no activity on 2023/01/02 10:55
upstream KCSAN: data-race in aio_read_events / iocb_put (2) fs 1 1114d 1114d 0/27 auto-closed as invalid on 2021/08/02 19:13
upstream KCSAN: data-race in aio_read_events / iocb_put (4) fs 1 851d 851d 0/27 auto-closed as invalid on 2022/04/23 01:57
upstream KCSAN: data-race in aio_read_events / iocb_put fs 2 1153d 1177d 0/27 auto-closed as invalid on 2021/06/24 15:51
upstream KCSAN: data-race in aio_read_events / iocb_put (8) fs 1 304d 304d 0/27 auto-obsoleted due to no activity on 2023/10/21 20:27

Sample crash report:
==================================================================
BUG: KCSAN: data-race in aio_read_events / iocb_put

write to 0xffff888125c6000c of 4 bytes by task 19084 on cpu 1:
 aio_complete fs/aio.c:1129 [inline]
 iocb_put+0x1e1/0x5c0 fs/aio.c:1163
 io_submit_one+0x87d/0x13b0 fs/aio.c:1883
 __do_sys_io_submit fs/aio.c:1939 [inline]
 __se_sys_io_submit+0x105/0x270 fs/aio.c:1909
 __x64_sys_io_submit+0x3f/0x50 fs/aio.c:1909
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888125c6000c of 4 bytes by task 19071 on cpu 0:
 aio_read_events_ring fs/aio.c:1192 [inline]
 aio_read_events+0xc6/0x470 fs/aio.c:1255
 read_events fs/aio.c:1292 [inline]
 do_io_getevents+0x267/0x380 fs/aio.c:2058
 __do_sys_io_getevents fs/aio.c:2091 [inline]
 __se_sys_io_getevents fs/aio.c:2079 [inline]
 __x64_sys_io_getevents+0xc6/0x180 fs/aio.c:2079
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000001 -> 0x00000002

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 19071 Comm: syz-executor.2 Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/09/30 18:39 upstream 02d5e016800d 0f01403d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in aio_read_events / iocb_put
2021/09/25 09:36 upstream 7d42e9818258 8cac236e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in aio_read_events / iocb_put
* Struck through repros no longer work on HEAD.