syzbot


KASAN: slab-out-of-bounds Write in ext4_write_inline_data_end
Status: fixed on 2021/11/10 00:50
Reported-by: syzbot+13146364637c7363a7de@syzkaller.appspotmail.com
Fix commit: a54c4613dac1 ext4: fix race writing to an inline_data file while its xattrs are changing
First crash: 110d, last: 110d

Cause bisection: introduced by (bisect log) :
commit a154d5d83d21af6b9ee32adc5dbcea5ac1fb534c
Author: Arnd Bergmann <arnd@arndb.de>
Date: Mon Mar 4 20:38:03 2019 +0000

  net: ignore sysctl_devconf_inherit_init_net without SYSCTL

Crash: KASAN: use-after-free Read in batadv_iv_ogm_queue_add (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 KASAN: use-after-free Write in ext4_write_inline_data_end C 6 214d 257d 0/1 upstream: reported C repro on 2021/03/24 20:23
Patch testing requests:
Created Duration User Patch Repo Result
2021/08/21 04:07 19m 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-smack-root 2021/08/18 17:27 upstream 614cb2751d31 a2fe1cb5 .config log report syz C KASAN: slab-out-of-bounds Write in ext4_write_inline_data_end