syzbot


KASAN: use-after-free Read in userfaultfd_release (2)
Status: upstream: reported C repro on 2020/07/13 02:24
Reported-by: syzbot+75867c44841cb6373570@syzkaller.appspotmail.com
First crash: 103d, last: 94d

Cause bisection: introduced by (bisect log):

commit d08ac70b1e0dc71ac2315007bcc3efb283b2eae4
Author: Daniel Colascione <dancol@google.com>
Date: Wed Apr 1 21:39:03 2020 +0000

  Wire UFFD up to SELinux

Crash: KASAN: use-after-free Read in userfaultfd_release (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream KASAN: use-after-free Read in userfaultfd_release syz 243 1112d 1084d 0/17 closed as invalid on 2017/11/01 20:39

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-linux-next-kasan-gce-root 2020/07/09 11:20 linux-next 89032636 bc238812 .config log report syz C linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/07/18 11:12 linux-next 4c43049f 9c812472 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/07/11 09:22 linux-next d31958b3 18d18b59 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/07/09 08:30 linux-next 89032636 bc238812 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/07/09 02:15 linux-next 89032636 bc238812 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk