On Mon, Feb 19, 2018 at 8:22 AM, Steffen Klassert <steffen.klass...@secunet.com> wrote: >> > <syzbot+7d03c810e50aaedef...@syzkaller.appspotmail.com> wrote: >> >> Hello, >> >> >> >> syzbot hit the following crash on net-next commit >> >> 9515a2e082f91457db0ecff4b65371d0fb5d9aad (Thu Jan 25 03:37:38 2018 +0000) >> >> net/ipv4: Allow send to local broadcast from a socket bound to a VRF >> >> >> >> So far this crash happened 6 times on net-next. >> >> Unfortunately, I don't have any reproducer for this crash yet. >> >> Raw console output is attached. >> >> compiler: gcc (GCC) 7.1.1 20170620 >> >> .config is attached. >> > >> > >> > +xfrm maintainers >> >> Here is a C repro: >> https://gist.githubusercontent.com/dvyukov/92c67ba9afaaa960bcfbdc6ef549ac10/raw/786f9221c1d707c7f4a15effcb1d5997dd4f8638/gistfile1.txt > > Seems like syzbot does not know about this reproducer. > > I've send a patch to test and got this as the reply: > > This crash does not have a reproducer. I cannot test it.
Yes, it does not know about the reproducer. I've extracted it manually, these hangs are sometimes hard to reproduce. For syzbot this bug does not have a reproducer. Have you tried to run the reproducer? For me it reproduced the bug quite reliably.