syzbot


KASAN: use-after-free Read in ext4_xattr_set_entry (4)
Status: upstream: reported C repro on 2021/01/30 11:05
Reported-by: syzbot+4cb1e27475bf90a9b926@syzkaller.appspotmail.com
First crash: 103d, last: 15d

Cause bisection: failed (bisect log)
similar bugs (13):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Read in ext4_xattr_set_entry (3) C 1 12d 193d 0/1 upstream: reported C repro on 2020/10/28 15:08
android-414 KASAN: use-after-free Read in ext4_xattr_set_entry (2) 6 556d 611d 0/1 auto-closed as invalid on 2020/02/28 13:35
linux-4.14 KASAN: use-after-free Read in ext4_xattr_set_entry (2) 1 412d 412d 0/1 auto-closed as invalid on 2020/07/21 03:20
linux-4.19 KASAN: use-after-free Read in ext4_xattr_set_entry (2) C 7 24d 332d 0/1 upstream: reported C repro on 2020/06/11 12:57
upstream KASAN: use-after-free Read in ext4_xattr_set_entry 1 1017d 1017d 0/22 closed as invalid on 2018/07/29 11:55
android-414 KASAN: use-after-free Read in ext4_xattr_set_entry 4 863d 756d 0/1 auto-closed as invalid on 2019/06/26 01:15
upstream KASAN: use-after-free Read in ext4_xattr_set_entry (3) 4 308d 426d 0/22 auto-closed as invalid on 2020/11/02 08:32
linux-4.19 KASAN: use-after-free Read in ext4_xattr_set_entry syz done 10 435d 683d 1/1 fixed on 2020/03/30 09:03
upstream KASAN: use-after-free Read in ext4_xattr_set_entry (2) C done 19 510d 919d 16/22 fixed on 2020/02/14 01:19
android-54 KASAN: use-after-free Read in ext4_xattr_set_entry 6 275d 456d 0/1 auto-closed as invalid on 2020/12/04 21:44
linux-4.14 KASAN: use-after-free Read in ext4_xattr_set_entry C done 9 464d 556d 1/1 fixed on 2020/03/01 21:06
android-54 KASAN: out-of-bounds Read in ext4_xattr_set_entry C 1 48d 48d 0/1 upstream: reported C repro on 2021/03/21 22:06
linux-4.14 KASAN: out-of-bounds Read in ext4_xattr_set_entry C 2 25d 27d 0/1 upstream: reported C repro on 2021/04/12 14:20

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/04/24 19:06 upstream 2a1d7946 52e37319 .config log report syz C
ci-upstream-kasan-gce-root 2021/03/03 18:26 upstream f69d02e3 52e37319 .config log report syz C
Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/01/26 10:55 upstream f8ad8187 52e37319 .config log report syz C KASAN: use-after-free Read in ext4_xattr_set_entry
ci-upstream-linux-next-kasan-gce-root 2021/03/25 13:43 linux-next 20f1b5f9 607e3baf .config log report syz C KASAN: use-after-free Read in ext4_xattr_set_entry