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: 465d, last: 455d

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 Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in userfaultfd_release syz 243 1473d 1445d 0/22 closed as invalid on 2017/11/01 20:39
Patch testing requests:
Created Duration User Patch Repo Result
2021/04/15 14:13 15m alaaemadhossney.ae@gmail.com linux-next OK

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2020/07/09 11:20 linux-next 8903263671cb bc238812 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/07/18 11:12 linux-next 4c43049f19a2 9c812472 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/11 09:22 linux-next d31958b30ea3 18d18b59 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/09 08:30 linux-next 8903263671cb bc238812 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/09 02:15 linux-next 8903263671cb bc238812 .config log report