syzbot


KASAN: slab-out-of-bounds Read in cgroup_file_notify
Status: fixed on 2020/05/10 10:42
Reported-by: syzbot+cac0c4e204952cf449b1@syzkaller.appspotmail.com
Fix commit: 726b7bbe hugetlb_cgroup: fix illegal access to memory
First crash: 120d, last: 120d

Cause bisection: introduced by (bisect log):

commit 6863de00e5400b534cd4e3869ffbc8f94da41dfc
Author: Mina Almasry <almasrymina@google.com>
Date: Thu Feb 20 03:55:30 2020 +0000

  hugetlb_cgroup: add accounting for shared mappings

Crash: KASAN: slab-out-of-bounds Read in cgroup_file_notify (log)
Repro: C syz .config

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-linux-next-kasan-gce-root 2020/03/06 15:45 linux-next c99b17ac c88c7b75 .config log report syz C andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, cgroups@vger.kernel.org, christian@brauner.io, daniel@iogearbox.net, hannes@cmpxchg.org, kafai@fb.com, linux-kernel@vger.kernel.org, lizefan@huawei.com, netdev@vger.kernel.org, songliubraving@fb.com, tj@kernel.org, yhs@fb.com