Possible kernel bug in tcp.c?

xyzzy at hotpop.com xyzzy at hotpop.com
Mon May 31 08:39:57 UTC 2004


On Monday 31 May 2004 11:15, Naoki wrote:
> I've got machines crashing under FC2 with kernel 2.6.5-1.358.  Couldn't
> catch the exact kernel messages sorry but here are the rough details.
>
> assertion failed kernel messages.
>
> net/ipv4/tcp.c:1568
> net/ipv4/tcp.c:1632
>
> The ethernet driver is :
>
> e100: Intel(R) PRO/100 Network Driver, 3.0.17
>
> Crashing ( and hanging with these messages scrolling at a hefty rate)
> alsmost daily because of it.
> No problem before with FC1 and 2.4 kernel.
>
> Any ideas?

Is this failing on a SAMBA connection?

>From what I can see in the code, it is a BUG_TRAP on the MSG_PEEK flag being 
set by the time it reaches the tcp code (line 1632 also traps if MSG_TRUNC is 
set, but I think that the trap at 1568 for MSG_PEEK alone is the relevant 
one).  SMB, CIF, and NCP are the only network file systems that seem to set 
this flag.  Also, if you are running on a Sparc64/Solaris.

Looks like some sort of weird networking problem in the 2.6 kernel.





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