KCSAN: data-race in __rcu_read_unlock / sync_rcu_exp_select_node_cpus (2)
Status: premoderation: reported on 2019/11/25 22:32
Fix commit: 314eeb43 rcu: Add *_ONCE() and data_race() to rcu_node ->exp_tasks plus locking
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 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-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 228d, last: 61d
similar bugs (1):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream KCSAN: data-race in __rcu_read_unlock / sync_rcu_exp_select_node_cpus 1 249d 249d 0/17 closed as invalid on 2019/11/19 13:44

Sample crash report:

Crashes (9):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-upstream-kcsan-gce 2020/05/10 17:07 kcsan 7c3cd68e 8742a2b9 .config log report,,
ci2-upstream-kcsan-gce 2020/05/01 04:28 kcsan 7c3cd68e 3698959a .config log report,,
ci2-upstream-kcsan-gce 2020/04/26 10:35 kcsan 7c3cd68e 0ce7569e .config log report,,
ci2-upstream-kcsan-gce 2020/01/15 20:35 kcsan 245a4300 f9b69507 .config log report,,
ci2-upstream-kcsan-gce 2020/01/15 13:57 kcsan 245a4300 fa12bd3c .config log report,,,
ci2-upstream-kcsan-gce 2019/12/22 18:07 kcsan 245a4300 8b967267 .config log report,,,
ci2-upstream-kcsan-gce 2019/11/29 21:44 kcsan ef798c30 4f7e1d0f .config log report,,
ci2-upstream-kcsan-gce 2019/11/26 21:08 kcsan ef798c30 1048481f .config log report,,,
ci2-upstream-kcsan-gce 2019/11/25 21:31 kcsan 5863cc79 598ca6c8 .config log report,,