Re: 2.1.99: NULL pointer dereference in tcp_v4_rehash

David S. Miller (
Sat, 2 May 1998 04:15:25 -0700

Date: Sat, 2 May 1998 13:11:34 +0200
From: Steffen Zahn <>

Since egcs-1.0.2 appears to be the default Linux compiler, at least
if one looks at,
it may be better to find such wrong code generation problems.
I have produced a combined source/disassembler of the file
linux/net/ipv4/tcp_ipv4.c and placed it at

Ok, thanks I'll look at it.

I could recompile the kernel with another compiler, but since I have
no way to reproduce the bug this could only be useful if I happen
to see the bug again in a kernel compiled with another compiler. In
that case we would know that the bug is not compiler-related.

Yes, but the whole point of this exercise is to determine
whether it is a egcs code gen. bug or a bug in the networking.
There are just too many variables at the moment, I use gcc-2.7.2 on
the Intel on my development machine, you've compiled the kernel with
egcs-1.0.2, so the first step is to see if the compiler is the issue.

David S. Miller

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