syzbot


KASAN: use-after-free Write in __ext4_expand_extra_isize (2)
Status: fixed on 2019/12/13 00:31
Reported-by: syzbot+44b6763edfc17144296f@syzkaller.appspotmail.com
Fix commit: 4ea99936 ext4: add more paranoia checking in ext4_expand_extra_isize handling
First crash: 422d, last: 277d
duplicates (1):
Title Repro Bisected Count Last Reported Patched Status
KASAN: use-after-free Write in ext4_mark_inode_dirty 5 281d 255d 0/17 closed as dup on 2019/11/29 12:55
similar bugs (4):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Write in __ext4_expand_extra_isize 11 273d 384d 0/1 auto-closed as invalid on 2020/03/10 14:13
upstream KASAN: use-after-free Write in __ext4_expand_extra_isize C 95 470d 861d 13/17 fixed on 2019/06/14 18:22
linux-4.19 KASAN: use-after-free Write in __ext4_expand_extra_isize 7 261d 322d 0/1 auto-closed as invalid on 2020/03/22 21:28
android-414 KASAN: use-after-free Write in __ext4_expand_extra_isize 65 252d 486d 0/1 auto-closed as invalid on 2020/03/31 02:59

Sample crash report:

Crashes (14):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-selinux-root 2019/11/03 07:23 upstream 9d234505 a41ca8fa .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/10/29 09:51 upstream 8005803a 5ea87a66 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/10/28 22:05 upstream 9e5eefba 439d7b14 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-selinux-root 2019/10/05 08:19 upstream b145b0eb f3f7d9c8 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/09/26 00:21 upstream f41def39 a3355dba .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/09/08 21:03 upstream 950b07c1 a60cb4cd .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-selinux-root 2019/08/27 16:12 upstream a55aa89a d21c5d9d .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/08/16 18:00 upstream a69e9051 8fd428a1 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/06/21 00:37 upstream abf02e29 34bf9440 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/11/07 11:08 linux-next c68c5373 d797d201 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/10/05 08:45 linux-next 311ef88a f3f7d9c8 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/09/23 05:27 linux-next b5b3bd89 d96e88f3 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/09/10 05:32 linux-next 6d028043 a60cb4cd .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/06/15 08:09 linux-next f4788d37 442206d7 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu