syzbot


UBSAN: shift-out-of-bounds in ext4_fill_super
Status: fixed on 2021/03/10 01:48
Reported-by: syzbot+345b75652b1d24227443@syzkaller.appspotmail.com
Fix commit: c9200760da8a ext4: check for invalid block size early when mounting a file system
First crash: 362d, last: 345d

Cause bisection: introduced by (bisect log) [release commit]:
commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun Sep 15 21:19:32 2019 +0000

  Linux 5.3

Crash: UBSAN: undefined-behaviour in ext4_fill_super (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2020/12/10 13:57 16m dvyukov@google.com patch git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git e360ba58d067a30a4e3e7d55ebdd919885a058d6 OK
2020/12/10 02:36 0m tytso@mit.edu patch git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git e360ba58d067a30a4e3e7d55ebdd919885a058d6 error
2020/12/10 02:21 16m anant.thazhemadam@gmail.com patch upstream error

Sample crash report:

Crashes (88):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2020/12/08 04:51 linux-next 15ac8fdb7440 51a9082e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/12/24 19:32 upstream 58cf05f597b0 c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/24 16:27 upstream 58cf05f597b0 c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/24 05:55 upstream 58cf05f597b0 c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/23 14:45 upstream 614cb5894306 c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/23 14:15 upstream 614cb5894306 c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/23 02:12 upstream 614cb5894306 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/22 17:04 upstream 8653b778e454 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/22 11:35 upstream 8653b778e454 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/22 09:03 upstream 8653b778e454 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/22 08:02 upstream 8653b778e454 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/21 19:04 upstream e37b12e4bb21 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/21 09:22 upstream 6a447b0e3151 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/21 05:21 upstream 6a447b0e3151 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/20 12:19 upstream 467f8165a2b0 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/20 06:21 upstream 467f8165a2b0 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/19 19:41 upstream 3644e2d2dda7 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/19 03:30 upstream a409ed156a90 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/18 23:46 upstream a409ed156a90 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/18 22:51 upstream a409ed156a90 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/18 15:08 upstream d64c6f96ba86 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/18 05:43 upstream d64c6f96ba86 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/17 18:07 upstream accefff5b547 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/17 04:09 upstream 5e60366d56c6 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/17 02:05 upstream 5e60366d56c6 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/17 00:48 upstream 5e60366d56c6 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/16 21:52 upstream 5e60366d56c6 04201c06 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/16 20:26 upstream 5e60366d56c6 04201c06 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/15 02:55 linux-next 14240d4c5b25 97183ed7 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 22:15 linux-next 14240d4c5b25 97183ed7 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 21:01 linux-next 14240d4c5b25 97183ed7 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 20:20 linux-next 14240d4c5b25 97183ed7 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 20:19 linux-next 14240d4c5b25 97183ed7 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 20:15 linux-next 14240d4c5b25 97183ed7 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 19:41 linux-next 14240d4c5b25 97183ed7 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 08:54 linux-next 14240d4c5b25 b22a7ec3 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/14 03:39 linux-next 14240d4c5b25 b22a7ec3 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/12 23:36 linux-next 14240d4c5b25 bca53db9 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/12 05:03 linux-next 14240d4c5b25 ba24ffcd .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/11 21:16 linux-next 14240d4c5b25 ba24ffcd .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/11 20:08 linux-next 14240d4c5b25 ba24ffcd .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/11 19:54 linux-next 14240d4c5b25 ba24ffcd .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/11 18:56 linux-next 14240d4c5b25 ba24ffcd .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/11 04:49 linux-next 14240d4c5b25 f900b48c .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/11 03:52 linux-next 14240d4c5b25 f900b48c .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/11 01:45 linux-next 14240d4c5b25 f900b48c .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/07 20:12 linux-next 15ac8fdb7440 1190297f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/07 16:18 linux-next 15ac8fdb7440 1190297f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/07 16:01 linux-next 15ac8fdb7440 1190297f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/07 14:25 linux-next 15ac8fdb7440 1190297f .config log report info