syzbot


KASAN: use-after-free Read in ext4_data_block_valid
Status: upstream: reported on 2019/08/15 15:07
Reported-by: syzbot+8e2729dc9b40f5871aee@syzkaller.appspotmail.com
First crash: 283d, last: 30d
similar bugs (6):
Kernel Title Repro Bisected Count Last Reported Patched Status
android-414 KASAN: use-after-free Read in ext4_data_block_valid (2) 6 184d 245d 0/1 auto-closed as invalid on 2020/03/21 21:05
upstream KASAN: use-after-free Read in ext4_data_block_valid 108 305d 752d 14/17 fixed on 2019/10/15 23:40
android-414 KASAN: use-after-free Read in ext4_data_block_valid 12 436d 407d 0/1 auto-closed as invalid on 2019/09/11 10:38
linux-4.19 KASAN: use-after-free Read in ext4_data_block_valid 2 241d 304d 0/1 auto-closed as invalid on 2020/01/24 00:27
android-49 KASAN: use-after-free Read in ext4_data_block_valid 21 510d 406d 0/3 auto-closed as invalid on 2019/06/29 18:27
android-49 KASAN: use-after-free Read in ext4_data_block_valid (2) 1 181d 181d 0/3 auto-closed as invalid on 2020/03/24 07:08

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-14 2020/04/24 16:32 linux-4.14.y 050272a0 03d97a1b .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci2-linux-4-14 2020/02/29 16:22 linux-4.14.y 78d697fc c88c7b75 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci2-linux-4-14 2019/11/20 16:27 linux-4.14.y 775d01b6 432c7650 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci2-linux-4-14 2019/08/15 14:06 linux-4.14.y 3ffe1e79 0d298d6b .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu