KCSAN: data-race in __blk_mq_get_driver_tag / bt_tags_for_each

Status: auto-obsoleted due to no activity on 2023/05/27 13:09
Subsystems: block
[Documentation on labels]
First crash: 1208d, last: 1208d
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in __blk_mq_get_driver_tag / bt_tags_for_each (2) block 6 6 1047d 1116d 0/29 auto-obsoleted due to no activity on 2023/11/04 04:04

Sample crash report:
==================================================================
BUG: KCSAN: data-race in __blk_mq_get_driver_tag / bt_tags_for_each

write to 0xffff888102916428 of 8 bytes by task 41 on cpu 1:
 __blk_mq_get_driver_tag+0x2d8/0x460 block/blk-mq.c:1793
 blk_mq_get_driver_tag block/blk-mq.h:284 [inline]
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:152 [inline]
 blk_mq_do_dispatch_sched+0x399/0x820 block/blk-mq-sched.c:186
 __blk_mq_sched_dispatch_requests+0x1c1/0x260
 blk_mq_sched_dispatch_requests+0x93/0x100 block/blk-mq-sched.c:338

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/04/22 13:02 upstream 8e41e0a57566 2b32bd34 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __blk_mq_get_driver_tag / bt_tags_for_each
* Struck through repros no longer work on HEAD.