syzbot


general protection fault in sg_alloc_append_table_from_pages
Status: upstream: reported syz repro on 2021/10/13 16:51
Reported-by: syzbot+2c56b725ec547fa9cb29@syzkaller.appspotmail.com
First crash: 14d, last: 3d15h

Cause bisection: introduced by (bisect log) :
commit 284562e1f34874e267d4f499362c3816f8f6bc3f
Author: Gurchetan Singh <gurchetansingh@chromium.org>
Date: Tue Dec 3 01:36:27 2019 +0000

  udmabuf: implement begin_cpu_access/end_cpu_access hooks

Crash: general protection fault in __sg_alloc_table_from_pages (log)
Repro: syz .config

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/10/20 21:02 upstream 8e37395c3a5d 418a00eb .config log report syz general protection fault in sg_alloc_append_table_from_pages
ci-upstream-kasan-gce-root 2021/10/10 02:49 upstream 717478d89fe2 838e7e2c .config log report syz general protection fault in sg_alloc_append_table_from_pages
ci-upstream-kasan-gce-root 2021/10/10 02:35 upstream 717478d89fe2 838e7e2c .config log report info general protection fault in sg_alloc_append_table_from_pages