On Thu, Oct 26, 2017 at 10:18 AM, Stefan Hajnoczi <stefanha@xxxxxxxxxx> wrote: > On Tue, Oct 24, 2017 at 08:14:01AM -0700, syzbot wrote: >> Hello, >> >> syzkaller hit the following crash on >> 28f50eb20931f32a2ceeb6aba8fa2cd5ca96ad9f >> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/master >> compiler: gcc (GCC) 7.1.1 20170620 >> .config is attached >> Raw console output is attached. >> C reproducer is attached >> syzkaller reproducer is attached. See https://goo.gl/kgGztJ >> for information about syzkaller reproducers >> >> >> IP: read_pnet include/net/net_namespace.h:269 [inline] >> IP: sock_net include/net/sock.h:2299 [inline] >> IP: vsock_diag_dump+0x290/0xa80 net/vmw_vsock/diag.c:87 > > Feel free to ignore my previous reply, Cong Wang > <xiyou.wangcong@xxxxxxxxx> has already found the root cause. Thank you! Hi Stefan, For future reference, you can recreate the build by using the provided config, running make olddefconfig and building with compiler referenced here: https://github.com/google/syzkaller/blob/master/docs/syzbot.md#crash-does-not-reproduce Also syzbot has obtained the provided crash report on the provided reproducer on a freshly-booted machine, so the reproducer worked for it somehow. You still may have a somewhat different setup, so it won't reproduce for you, but I have high assurance that the reproducer is valid. Also please don't ignore this part. It will greatly help to keep the whole process running. Otherwise the bot won't be able to provide all crashes it finds. > syzbot will keep track of this bug report. > Once a fix for this bug is committed, please reply to this email with: > #syz fix: exact-commit-title > To mark this as a duplicate of another syzbot report, please reply with: > #syz dup: exact-subject-of-another-report > Note: all commands must start from beginning of the line. Thanks
