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: 265d, last: 13d

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 24d 355d 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 718d 774d 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 574d 574d 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 done 7 36d 494d 1/1 fixed on 2021/10/13 07:23
upstream KASAN: use-after-free Read in ext4_xattr_set_entry 1 1179d 1179d 0/22 closed as invalid on 2018/07/29 11:55
android-414 KASAN: use-after-free Read in ext4_xattr_set_entry 4 1025d 918d 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 470d 588d 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 597d 846d 1/1 fixed on 2020/03/30 09:03
upstream KASAN: use-after-free Read in ext4_xattr_set_entry (2) C done 19 672d 1081d 16/22 fixed on 2020/02/14 01:19
android-54 KASAN: use-after-free Read in ext4_xattr_set_entry 6 438d 619d 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 626d 718d 1/1 fixed on 2020/03/01 21:06
android-54 KASAN: out-of-bounds Read in ext4_xattr_set_entry C 1 211d 211d 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 7d01h 189d 0/1 upstream: reported C repro on 2021/04/12 14:20
Patch testing requests:
Created Duration User Patch Repo Result
2021/06/30 07:46 9m wanjiabing@vivo.com linux-next report log

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 2021/10/05 04:19 upstream f6274b06e326 52e37319 .config log report syz C
ci-upstream-kasan-gce-root 2021/08/23 02:57 upstream e22ce8eb631b 52e37319 .config log report syz C
ci-upstream-kasan-gce-root 2021/07/24 02:38 upstream f0fddcec6b62 52e37319 .config log report syz C
ci-upstream-kasan-gce-root 2021/06/23 20:37 upstream 7426cedc7dad 52e37319 .config log report syz C
ci-upstream-kasan-gce-root 2021/05/24 19:44 upstream 1434a3127887 52e37319 .config log report syz C
ci-upstream-kasan-gce-root 2021/04/24 19:06 upstream 2a1d7946fa53 52e37319 .config log report syz C
ci-upstream-kasan-gce-root 2021/03/03 18:26 upstream f69d02e37a85 52e37319 .config log report syz C
Crashes (4):
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 f8ad8187c3b5 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 20f1b5f9c07c 607e3baf .config log report syz C KASAN: use-after-free Read in ext4_xattr_set_entry
ci-qemu2-riscv64 2021/09/05 03:58 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 7d2a07b76933 d236a457 .config log report info KASAN: slab-out-of-bounds Write in ext4_xattr_set_entry
ci-qemu2-riscv64 2021/08/29 02:31 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 417166ddec02 be2c130d .config log report info KASAN: slab-out-of-bounds Write in ext4_xattr_set_entry