syzbot


KASAN: use-after-free Read in dput (2)
Status: fixed on 2020/06/18 13:57
Reported-by: syzbot+72868dd424eb66c6b95f@syzkaller.appspotmail.com
Fix commit: 4fa3b1c4 proc: Handle umounts cleanly
First crash: 235d, last: 231d

Cause bisection: introduced by (bisect log) :
commit 69879c01a0c3f70e0887cfb4d9ff439814361e46
Author: Eric W. Biederman <ebiederm@xmission.com>
Date: Thu Feb 20 14:08:20 2020 +0000

  proc: Remove the now unnecessary internal mount of proc

Crash: KASAN: use-after-free Read in dput (log)
Repro: syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in dput C 24 845d 879d 0/17 closed as invalid on 2019/06/10 23:01
android-54 KASAN: use-after-free Read in dput syz 1 96d 96d 0/1 upstream: reported syz repro on 2020/08/28 19:40

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-linux-next-kasan-gce-root 2020/04/13 02:16 linux-next d2a22790 36b0b050 .config log report syz linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2020/04/15 10:53 upstream 8632e9b5 3f3c5574 .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 2020/04/13 01:12 linux-next d2a22790 36b0b050 .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 2020/04/11 15:38 linux-next 11ecafc6 a8c6a3f8 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk