syzbot


KASAN: use-after-free Read in ext4_xattr_set_entry (2)
Status: upstream: reported C repro on 2020/06/11 12:57
Reported-by: syzbot+b0fe9558904a8bb778ac@syzkaller.appspotmail.com
First crash: 465d, last: 7d08h
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 26d 326d 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 689d 745d 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 545d 545d 0/1 auto-closed as invalid on 2020/07/21 03:20
upstream KASAN: use-after-free Read in ext4_xattr_set_entry 1 1150d 1150d 0/22 closed as invalid on 2018/07/29 11:55
android-414 KASAN: use-after-free Read in ext4_xattr_set_entry 4 997d 890d 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 441d 559d 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 569d 817d 1/1 fixed on 2020/03/30 09:03
upstream KASAN: use-after-free Read in ext4_xattr_set_entry (4) C error 4 14d 232d 0/22 upstream: reported C repro on 2021/01/30 11:05
upstream KASAN: use-after-free Read in ext4_xattr_set_entry (2) C done 19 643d 1052d 16/22 fixed on 2020/02/14 01:19
android-54 KASAN: use-after-free Read in ext4_xattr_set_entry 6 409d 590d 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 597d 689d 1/1 fixed on 2020/03/01 21:06
android-54 KASAN: out-of-bounds Read in ext4_xattr_set_entry C 1 182d 182d 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 8d05h 160d 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
ci2-linux-4-19 2021/09/12 18:38 linux-4.19.y b172b44fcb17 6a81331a .config log report syz C
ci2-linux-4-19 2021/08/13 18:14 linux-4.19.y addba38e7c3b 6a81331a .config log report syz C
ci2-linux-4-19 2021/07/14 17:50 linux-4.19.y fcfbdfe9626e 6a81331a .config log report syz C
ci2-linux-4-19 2021/06/14 17:26 linux-4.19.y 9a2dc0e6c531 6a81331a .config log report syz C
ci2-linux-4-19 2021/05/15 17:00 linux-4.19.y 3c8c23092588 6a81331a .config log report syz C
ci2-linux-4-19 2021/03/24 22:27 linux-4.19.y 78fec1611cbf cba33199 .config log report syz C
ci2-linux-4-19 2021/02/20 23:40 linux-4.19.y 255b58a2b3af cba33199 .config log report syz C
ci2-linux-4-19 2021/01/06 04:21 linux-4.19.y 3207316b3bee cba33199 .config log report syz C
ci2-linux-4-19 2020/12/07 00:13 linux-4.19.y daefdc9eb24b cba33199 .config log report syz C
Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-19 2021/04/11 17:20 linux-4.19.y 830a059cbba6 6a81331a .config log report syz C KASAN: out-of-bounds Read in ext4_xattr_set_entry
ci2-linux-4-19 2020/11/06 23:19 linux-4.19.y b94de4d19498 cba33199 .config log report syz C
ci2-linux-4-19 2021/04/15 16:15 linux-4.19.y 0f1b4cb77d7f fcdb12ba .config log report syz KASAN: out-of-bounds Read in ext4_xattr_set_entry
ci2-linux-4-19 2021/02/22 22:04 linux-4.19.y 255b58a2b3af c26fb06b .config log report info KASAN: use-after-free Read in ext4_xattr_set_entry
ci2-linux-4-19 2020/08/29 22:22 linux-4.19.y f6d5cb9e2c06 d5a3ae1f .config log report
ci2-linux-4-19 2020/06/21 19:47 linux-4.19.y 3fc898571b97 4f2acff9 .config log report
ci2-linux-4-19 2020/06/11 12:56 linux-4.19.y 3fc898571b97 3ab7a05a .config log report