syzbot


KCSAN: data-race in __rcu_read_unlock / sync_rcu_exp_select_cpus
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+99f4ddade3c22ab0cf23@syzkaller.appspotmail.com
Fix commit: c51f83c3 rcu: Use READ_ONCE() for ->expmask in rcu_read_unlock_special()
First crash: 120d, last: 15d

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-upstream-kcsan-gce 2020/02/06 11:14 https://github.com/google/ktsan.git kcsan 245a4300 662cf49a .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci2-upstream-kcsan-gce 2020/01/29 19:28 https://github.com/google/ktsan.git kcsan 245a4300 5ed23f9a .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci2-upstream-kcsan-gce 2019/12/21 06:56 https://github.com/google/ktsan.git kcsan 245a4300 bc586918 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci2-upstream-kcsan-gce 2019/12/05 04:53 https://github.com/google/ktsan.git kcsan ef798c30 b2088328 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci2-upstream-kcsan-gce 2019/12/02 17:41 https://github.com/google/ktsan.git kcsan ef798c30 f879db37 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci2-upstream-kcsan-gce 2019/11/17 05:46 https://github.com/google/ktsan.git kcsan 5863cc79 cdac920b .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci2-upstream-kcsan-gce 2019/10/24 23:14 https://github.com/google/ktsan.git kcsan 05f22368 d01bb02a .config log report akpm@linux-foundation.org, amir73il@gmail.com, darrick.wong@oracle.com, hannes@cmpxchg.org, jack@suse.cz, josef@toxicpanda.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, songliubraving@fb.com, willy@infradead.org