syzbot


KASAN: use-after-free Read in do_madvise
Status: upstream: reported syz repro on 2020/08/21 16:58
Reported-by: syzbot+b90df26038d1d5d85c97@syzkaller.appspotmail.com
Fix commit: 7867fd7c mm: madvise: fix vma user-after-free
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 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-kmsan-gce ci-upstream-kmsan-gce-386 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-bpf-kasan-gce]
First crash: 39d, last: 37d

Cause bisection: failed (bisect log)

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-root 2020/08/22 02:32 upstream cd02217a 6436ce4b .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/08/21 06:20 upstream da2968ff 1d75fe45 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/08/21 05:28 upstream da2968ff 1d75fe45 .config log report syz akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/08/23 04:37 linux-next 494d311a 1da71ab0 .config log report syz akpm@linux-foundation.org, christian@brauner.io, linux-kernel@vger.kernel.org, linux-mm@kvack.org