syzbot


general protection fault in selinux_socket_recvmsg
Status: upstream: reported C repro on 2020/05/23 07:14
Reported-by: syzbot+c6bfc3db991edc918432@syzkaller.appspotmail.com
Fix commit: mptcp: avoid NULL-ptr derefence on fallback
Patched on: [ci-upstream-bpf-kasan-gce ci-upstream-linux-next-kasan-gce-root ci-upstream-net-this-kasan-gce], missing 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-net-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 8d11h, last: 7d18h

Cause bisection: introduced by (bisect log):

commit 263e1201a2c324b60b15ecda5de9ebf1e7293e31
Author: Paolo Abeni <pabeni@redhat.com>
Date: Thu Apr 30 13:01:51 2020 +0000

  mptcp: consolidate synack processing.

Crash: WARNING in warn_bad_map (log)
Repro: C syz .config
duplicates (1):
Title Repro Bisected Count Last Reported Patched Status
general protection fault in sock_recvmsg C cause 1 6d03h 5d22h 0/17 closed as dup on 2020/05/25 11:14
Patch testing requests:
Created Duration User Patch Repo Result
2020/05/25 08:58 16m pabeni@redhat.com patch net OK

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-selinux-root 2020/05/23 07:13 upstream 051143e1 9682898d .config log report syz C andriin@fb.com, anton@enomsg.org, ast@kernel.org, bpf@vger.kernel.org, ccross@android.com, daniel@iogearbox.net, eparis@parisplace.org, john.fastabend@gmail.com, kafai@fb.com, keescook@chromium.org, kpsingh@chromium.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, paul@paul-moore.com, selinux@vger.kernel.org, songliubraving@fb.com, stephen.smalley.work@gmail.com, tony.luck@intel.com, yhs@fb.com
ci-upstream-kasan-gce-selinux-root 2020/05/23 06:46 upstream 051143e1 9682898d .config log report andriin@fb.com, anton@enomsg.org, ast@kernel.org, bpf@vger.kernel.org, ccross@android.com, daniel@iogearbox.net, eparis@parisplace.org, john.fastabend@gmail.com, kafai@fb.com, keescook@chromium.org, kpsingh@chromium.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, paul@paul-moore.com, selinux@vger.kernel.org, songliubraving@fb.com, stephen.smalley.work@gmail.com, tony.luck@intel.com, yhs@fb.com
ci-upstream-kasan-gce-selinux-root 2020/05/22 15:08 upstream d2f8825a 5afa2ddd .config log report andriin@fb.com, anton@enomsg.org, ast@kernel.org, bpf@vger.kernel.org, ccross@android.com, daniel@iogearbox.net, eparis@parisplace.org, john.fastabend@gmail.com, kafai@fb.com, keescook@chromium.org, kpsingh@chromium.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, paul@paul-moore.com, selinux@vger.kernel.org, songliubraving@fb.com, stephen.smalley.work@gmail.com, tony.luck@intel.com, yhs@fb.com
ci-qemu-upstream 2020/05/22 15:04 upstream 051143e1 9682898d .config log report andriin@fb.com, anton@enomsg.org, ast@kernel.org, bpf@vger.kernel.org, ccross@android.com, daniel@iogearbox.net, eparis@parisplace.org, john.fastabend@gmail.com, kafai@fb.com, keescook@chromium.org, kpsingh@chromium.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, paul@paul-moore.com, selinux@vger.kernel.org, songliubraving@fb.com, stephen.smalley.work@gmail.com, tony.luck@intel.com, yhs@fb.com