Re: [PATCH] net: sk == 0xffffffff fix - not for commit

From: Eric Dumazet
Date: Mon Dec 09 2013 - 10:32:07 EST


On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
> NOT FOR COMMITTING TO MAINLINE.
>
> With g_ether loaded the sk occasionally becomes 0xffffffff.
> It happens usually after transferring few hundreds of kilobytes to few
> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
> kernel panic.
>
> This is a *workaround*. I don't know enough net code to understand the core
> of the problem. However, with this patch applied the problems are gone,
> or at least pushed farther away.

Is it happening on SMP or UP ?

Crash should happen earlier in __inet_lookup_established()


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