syzbot


general protection fault in path_openat
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+190005201ced78a74ad6@syzkaller.appspotmail.com
Fix commit: 6404674a vfs: fix do_last() regression
First crash: 156d, last: 152d

Cause bisection: introduced by (bisect log):

commit d0cb50185ae942b03c4327be322055d622dc79f6
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun Jan 26 14:29:34 2020 +0000

  do_last(): fetch directory ->i_mode and ->i_uid before it's too late

Crash: general protection fault in path_openat (log)
Repro: C syz .config
similar bugs (3):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 general protection fault in path_openat C fix 13 148d 154d 1/1 fixed on 2020/03/06 08:34
linux-4.14 general protection fault in path_openat C fix 40 148d 154d 1/1 fixed on 2020/03/06 21:15
android-54 general protection fault in path_openat syz 26 147d 154d 0/1 upstream: reported syz repro on 2020/01/30 09:23

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2020/02/01 03:07 upstream ccaaaf6f c30117b2 .config log report syz C linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2020/02/01 01:04 upstream ccaaaf6f c30117b2 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/01/31 18:35 upstream ccaaaf6f c30117b2 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/01/31 07:49 upstream 9f68e365 5ed23f9a .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-qemu-upstream 2020/01/29 15:57 upstream b3a60822 5ed23f9a .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-qemu-upstream 2020/01/29 09:03 upstream b3a60822 c8e81ce4 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-qemu-upstream 2020/01/28 04:43 upstream b0be0eff 56cd6c9b .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk