syzbot


KASAN: use-after-free Write in ext4_write_inline_data
Status: upstream: reported C repro on 2021/08/15 16:27
Reported-by: syzbot+1bd003b0dbaa786227e6@syzkaller.appspotmail.com
First crash: 117d, last: 117d

Cause bisection: introduced by (bisect log) :
commit 669de8bda87b92ab9a2fc663b3f5743c2ad1ae9f
Author: Bart Van Assche <bvanassche@acm.org>
Date: Thu Feb 14 23:00:54 2019 +0000

  kernel/workqueue: Use dynamic lockdep keys for workqueues

Crash: WARNING: locking bug in ext4_sync_fs (log)
Repro: C syz .config

Fix bisection: failed (bisect log)
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: slab-out-of-bounds Write in ext4_write_inline_data C done 3 91d 298d 1/1 fixed on 2021/10/06 16:08
linux-4.14 KASAN: use-after-free Write in ext4_write_inline_data C 6 20d 305d 0/1 upstream: reported C repro on 2021/02/04 16:01
Patch testing requests:
Created Duration User Patch Repo Result
2021/08/21 04:03 18m tytso@mit.edu git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git 9e445093e523f3277081314c864f708fd4bd34aa OK

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/08/11 16:22 upstream 761c6d7ec820 6972b106 .config log report syz C KASAN: use-after-free Write in ext4_write_inline_data