syzbot


KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear (3)
Status: upstream: reported on 2021/10/25 11:16
Reported-by: syzbot+4f8bfd804b4a1f95b8f6@syzkaller.appspotmail.com
Fix commit: 9f8b93a7df4d sbitmap: silence data race warning
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-riscv64 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 42d, last: 30d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear (2) 4 384d 359d 0/22 auto-closed as invalid on 2020/12/21 11:46
upstream KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear 36 666d 768d 0/22 auto-closed as invalid on 2020/04/14 03:40

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-kcsan-gce 2021/10/31 17:27 upstream 180eca540ae0 098b5d53 .config log report info KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear
ci2-upstream-kcsan-gce 2021/10/28 06:48 upstream 1fc596a56b33 be531bb4 .config log report info KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear
ci2-upstream-kcsan-gce 2021/10/27 19:52 upstream d25f27432f80 be531bb4 .config log report info KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear
ci2-upstream-kcsan-gce 2021/10/21 03:34 upstream 2f111a6fd5b5 f111d03b .config log report info KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear
ci2-upstream-kcsan-gce 2021/10/20 11:40 upstream d9abdee5fd5a 418a00eb .config log report info KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear