Re: in[46]_cksum problems

["Steven M. Bellovin" <smb%cs.columbia.edu@localhost>]

On Fri, 18 Apr 2008 11:34:17 +0200
Jaap Boender <jaapb%kerguelen.org@localhost> wrote:

> Hello,
> 
> I'm running netbsd-current/sparc64 (last cvs update on April 16) on a
> Sun Ultra60 with SMP enabled (yay, it works!), but I'm running into
> some problems with IP, both v4 and v6.
> 
> At some point when using FTP (the client), it panics with
> "in4_cksum: mbuf too short for IP header". The trace:
> in4_cksum, tcp_input_cksum, tcp_input, ip_input, ipintr,
> softint_execute, softint_overlay, lwp_userret, mi_userret, userret,
> trap.
> 
> For IPv6, it's the same ("in6_cksum: mbuf too short for IPv6
> header"), only here it crashes when starting the rpcbind daemon. (it
> prints "Starting rpcbind.", and then it crashes.) The trace:
> in6_cksum, icmp6_input, ip6_input, ip6intr, softint_execute,
> softint_overlay, lwp_userret, mi_userret, userret, syscall_plain.
> 
>   Jaap
> 
> P.S. I'm CC'ing this to port-sparc64, as I've no idea if it's a 
> port-sparc64-(SMP)-related or a general problem.
> 
I've experienced that panic on i386, from squid.  (I posted about it a
couple of weeks ago.)


                --Steve Bellovin, http://www.cs.columbia.edu/~smb