syzbot


KASAN: use-after-free Read in ext4_data_block_valid
Status: fixed on 2019/10/15 23:40
Reported-by: syzbot+1e470567330b7ad711d5@syzkaller.appspotmail.com
Fix commit: 7727ae52975d ext4: fix potential use after free after remounting with noblock_validity
First crash: 1318d, last: 869d
similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Read in ext4_data_block_valid 5 558d 846d 0/1 auto-closed as invalid on 2020/09/26 20:10
android-414 KASAN: use-after-free Read in ext4_data_block_valid (2) 6 747d 809d 0/1 auto-closed as invalid on 2020/03/21 21:05
android-414 KASAN: use-after-free Read in ext4_data_block_valid 12 999d 971d 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 805d 867d 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 1073d 969d 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 744d 744d 0/3 auto-closed as invalid on 2020/03/24 07:08

Sample crash report:

Crashes (108):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2019/07/24 00:35 upstream c6dd78fcb8ee de453f34 .config log report
ci-upstream-kasan-gce-smack-root 2019/06/27 20:53 upstream 249155c20f9b 7509bf36 .config log report
ci-upstream-kasan-gce-root 2018/12/04 03:35 upstream 0072a0c14d5b 03f94a45 .config log report
ci-upstream-kasan-gce-root 2018/11/18 19:47 upstream 1ce80e0fe98e adf636a8 .config log report
ci-upstream-kasan-gce-selinux-root 2018/11/06 01:35 upstream 163c8d54a997 8bd6bd63 .config log report
ci-upstream-kasan-gce-smack-root 2018/10/28 20:29 upstream dad4f140edaa 6f9b225a .config log report
ci-upstream-kasan-gce-root 2018/04/30 18:02 upstream 6da6c0db5316 06db3cec .config log report
ci-upstream-linux-next-kasan-gce-root 2019/01/19 22:59 linux-next 9673b4aa71ca 8aa587b0 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/12/19 08:37 linux-next 6648e120dd1a 4edaba93 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/11/20 06:34 linux-next 442b8cea2477 9bc2a903 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/11/19 20:52 linux-next 442b8cea2477 adf636a8 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/11/05 15:26 linux-next 55e5059cb572 8bd6bd63 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/11/05 04:33 linux-next 25e9471b6a27 8bd6bd63 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/27 21:39 linux-next 8c60c36d0b8c 8efba39a .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/26 20:10 linux-next 8c60c36d0b8c a8292de9 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/26 04:17 linux-next 8c60c36d0b8c a8292de9 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/24 15:43 linux-next 8c60c36d0b8c a8292de9 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/18 11:50 linux-next 9bab64345e83 d257b2d2 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/17 20:53 linux-next 4efacb725c0e b2695b95 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/16 12:51 linux-next 6d5d82417dd6 1ba7fd7e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/15 12:39 linux-next ca0591d03a2d caf12900 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/15 07:00 linux-next 774ea0551a29 caf12900 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/14 17:29 linux-next 774ea0551a29 caf12900 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/14 14:57 linux-next 774ea0551a29 caf12900 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/14 13:46 linux-next 774ea0551a29 caf12900 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/14 03:42 linux-next 774ea0551a29 caf12900 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/14 01:24 linux-next 774ea0551a29 caf12900 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/09 18:12 linux-next 570b7bdeaf18 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/09 05:52 linux-next ae16eea39a86 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/09 04:23 linux-next ae16eea39a86 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/09 01:56 linux-next ae16eea39a86 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/08 18:09 linux-next ae16eea39a86 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/08 10:17 linux-next ae16eea39a86 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/08 08:38 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/08 05:16 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/08 04:02 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 22:32 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 19:57 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 18:38 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 13:59 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 11:26 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 07:21 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 05:37 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/06 20:29 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/06 15:36 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/05 02:18 linux-next 25bcda3e8b9f 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/03 18:41 linux-next 8f84a21675f0 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/03 13:16 linux-next 8f84a21675f0 0f3e0261 .config log report