syzbot


general protection fault in qp_release_pages
Status: upstream: reported C repro on 2020/10/12 06:11
Reported-by: syzbot+f58fe4bb535845237057@syzkaller.appspotmail.com
Fix commit: 90ca6333 VMCI: check return value of get_user_pages_fast() for errors
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 14d, last: 14d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: general protection fault in qp_release_pages (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 general protection fault in qp_release_pages C 2 3d01h 3d02h 0/1 upstream: reported C repro on 2020/10/23 10:34
linux-4.19 general protection fault in qp_release_pages C 4 9d11h 11d 0/1 upstream: reported C repro on 2020/10/14 20:32

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce 2020/10/11 23:58 upstream 3dd0130f 4a77ae0b .config log report syz C arnd@arndb.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce 2020/10/11 23:40 upstream 3dd0130f 4a77ae0b .config log report info arnd@arndb.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org