syzbot


general protection fault in dccp_timeout_nlattr_to_obj
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+46a4ad33f345d1dd346e@syzkaller.appspotmail.com
Fix commit: 1d9a7acd3d1e netfilter: conntrack: dccp, sctp: handle null timeout argument
First crash: 628d, last: 625d

Cause bisection: introduced by (bisect log) :
commit dd2934a95701576203b2f61e8ded4e4a2f9183ea
Author: Florian Westphal <fw@strlen.de>
Date: Mon Sep 17 10:02:54 2018 +0000

  netfilter: conntrack: remove l3->l4 mapping information

Crash: general protection fault in dccp_timeout_nlattr_to_obj (log)
Repro: C syz .config

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/01/08 10:52 upstream ae6088216ce4 6738e0b3 .config log report syz C
ci-upstream-kasan-gce-root 2020/01/07 17:03 upstream ae6088216ce4 1bcd407e .config log report syz C
ci-upstream-kasan-gce-386 2020/01/07 08:10 upstream ec7b3f5372e2 53430d97 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/01/06 19:18 net d89091a4930e 438e1227 .config log report syz C
ci-upstream-net-kasan-gce 2020/01/06 21:53 net-next de1b23b9b4c1 53430d97 .config log report syz C
ci-upstream-kasan-gce-root 2020/01/09 11:28 upstream b07f636fca1c ddc3e859 .config log report
ci-upstream-net-this-kasan-gce 2020/01/08 23:41 net 47240ba0cd09 ddc3e859 .config log report