syzbot


general protection fault in ext4_writepages
Status: fixed on 2019/12/13 00:31
Reported-by: syzbot+9567fda428fba259deba@syzkaller.appspotmail.com
Fix commit: 4d06bfb97ecb ext4: Add error handling for io_end_vec struct allocation
First crash: 763d, last: 750d

Cause bisection: introduced by (bisect log) :
commit c8cc88163f40df39e50cda63ac361631864b453e
Author: Ritesh Harjani <riteshh@linux.ibm.com>
Date: Wed Oct 16 07:37:10 2019 +0000

  ext4: Add support for blocksize < pagesize in dioread_nolock

Crash: general protection fault in ext4_writepages (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2019/11/11 18:24 18m tytso@mit.edu https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git test OK

Sample crash report:

Crashes (18):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2019/11/06 23:09 linux-next dcd34bd23418 da505f84 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/11/19 16:13 linux-next 5a6fcbeabe3e 5bc70212 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/17 06:26 linux-next 5a6fcbeabe3e d5696d51 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/16 10:16 linux-next 5a6fcbeabe3e cdac920b .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/16 08:11 linux-next 5a6fcbeabe3e cdac920b .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/16 01:49 linux-next 5a6fcbeabe3e cdac920b .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/15 07:42 linux-next 4e8f108c3af2 a24fe792 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/12 05:00 linux-next 6980b7f6f9db 048f2d49 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/11 00:16 linux-next 5591cf003452 dc438b91 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/10 22:47 linux-next 5591cf003452 dc438b91 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/10 18:06 linux-next 5591cf003452 dc438b91 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/09 22:25 linux-next 5591cf003452 dc438b91 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/09 17:06 linux-next 5591cf003452 dc438b91 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/08 21:33 linux-next 5591cf003452 1e35461e .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/08 20:41 linux-next 5591cf003452 1e35461e .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/08 15:51 linux-next 5591cf003452 1e35461e .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/08 04:56 linux-next c68c5373c504 f39aff9e .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/06 22:35 linux-next dcd34bd23418 da505f84 .config log report