syzbot


WARNING in request_end
Status: fixed on 2019/11/11 16:48
Reported-by: syzbot+ef054c4d3f64cd7f7cec@syzkaller.appspotmail.com
Fix commit: 4c316f2f3ff3 fuse: set FR_SENT while locked
First crash: 1094d, last: 1057d

Cause bisection: introduced by (bisect log) :
commit 4ad769f3c346ec3d458e255548dec26ca5284cf6
Author: Eric W. Biederman <ebiederm@xmission.com>
Date: Tue May 29 14:04:46 2018 +0000

  fuse: Allow fully unprivileged mounts

Crash: KASAN: use-after-free Read in fuse_dev_do_read (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit 4c316f2f3ff315cb48efb7435621e5bfb81df96d
Author: Miklos Szeredi <mszeredi@redhat.com>
Date: Fri Sep 28 14:43:22 2018 +0000

  fuse: set FR_SENT while locked

similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-49 WARNING in request_end 1 1084d 1084d 0/3 auto-closed as invalid on 2019/04/01 20:43
Patch testing requests:
Created Duration User Patch Repo Result
2019/03/23 19:48 18m mszeredi@redhat.com git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git bc78abbd55dd report log

Sample crash report:

Crashes (14):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-386 2018/10/08 09:37 upstream 0238df646e62 8b311eaf .config log report syz C
ci-upstream-kasan-gce-smack-root 2018/10/31 06:55 upstream 310c7585e830 4ccf7bb4 .config log report
ci-upstream-kasan-gce-root 2018/10/23 04:48 upstream ca9eb48fe01f ecb386fe .config log report
ci-upstream-kasan-gce 2018/10/15 05:37 upstream 3a27203102eb caf12900 .config log report
ci-upstream-kasan-gce-root 2018/10/14 02:04 upstream 7ec21823634d caf12900 .config log report
ci-upstream-kasan-gce 2018/10/11 15:17 upstream 9dcd936c5312 5f818b4b .config log report
ci-upstream-kasan-gce 2018/10/11 12:43 upstream 9dcd936c5312 5f818b4b .config log report
ci-upstream-kasan-gce 2018/10/10 23:16 upstream b8db9e69dba9 5f818b4b .config log report
ci-upstream-kasan-gce-smack-root 2018/10/08 13:39 upstream 0238df646e62 8b311eaf .config log report
ci-upstream-kasan-gce-root 2018/09/24 11:11 upstream 6bf4ca7fbc85 2f485cdf .config log report
ci-upstream-kasan-gce-386 2018/10/08 14:21 upstream 0238df646e62 8b311eaf .config log report
ci-upstream-kasan-gce-386 2018/10/08 08:50 upstream 0238df646e62 8b311eaf .config log report
ci-upstream-kasan-gce-386 2018/10/07 18:20 upstream fb1c592cf4c9 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/25 13:03 linux-next 8b7a6ebdd4a5 0e7547d7 .config log report