syzbot


KASAN: slab-out-of-bounds Read in f2fs_build_segment_manager
Status: upstream: reported C repro on 2020/09/25 10:08
Reported-by: syzbot+481a3ffab50fed41dcc0@syzkaller.appspotmail.com
Fix commit: 3a22e9ac f2fs: fix to do sanity check on segment/section count
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 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-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 28d, last: 28d

Cause bisection: failed (bisect log)
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 KASAN: slab-out-of-bounds Read in f2fs_build_segment_manager C 5 10d 28d 0/1 upstream: reported C repro on 2020/09/25 07:37
linux-4.19 KASAN: slab-out-of-bounds Read in f2fs_build_segment_manager C 2 6d20h 6d21h 0/1 upstream: reported C repro on 2020/10/17 08:54

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-root 2020/09/25 08:03 upstream 171d4ff7 54289b08 .config log report syz C chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2020/09/25 07:41 upstream 171d4ff7 54289b08 .config log report info chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org