From: Eric Dumazet <[email protected]> Date: Thu, 26 Nov 2015 08:18:14 -0800
> From: Eric Dumazet <[email protected]> > > Dmitry provided a syzkaller (http://github.com/google/syzkaller) > generated program that triggers the WARNING at > net/ipv4/tcp.c:1729 in tcp_recvmsg() : > > WARN_ON(tp->copied_seq != tp->rcv_nxt && > !(flags & (MSG_PEEK | MSG_TRUNC))); > > His program is specifically attempting a Cross SYN TCP exchange, > that we support (for the pleasure of hackers ?), but it looks we > lack proper tcp->copied_seq initialization. > > Thanks again Dmitry for your report and testings. > > Signed-off-by: Eric Dumazet <[email protected]> > Reported-by: Dmitry Vyukov <[email protected]> > Tested-by: Dmitry Vyukov <[email protected]> Applied and queued up for -stable, thanks Eric! -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
