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Re: System crash in tcp_fragment()

To: george anzinger <george@xxxxxxxxxx>
Subject: Re: System crash in tcp_fragment()
From: Andi Kleen <ak@xxxxxxx>
Date: Tue, 21 May 2002 14:54:52 +0200
Cc: "David S. Miller" <davem@xxxxxxxxxx>, niv@xxxxxxxxxx, kuznet@xxxxxxxxxxxxx, ak@xxxxxxx, netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx, ak@xxxxxx, pekkas@xxxxxxxxxx
In-reply-to: <3CE9F679.90ACF597@xxxxxxxxxx>
References: <Pine.LNX.4.33.0205201836160.9301-100000@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <3CE9E466.AC2358EE@xxxxxxxxxx> <20020520.230021.29510217.davem@xxxxxxxxxx> <3CE9F679.90ACF597@xxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
User-agent: Mutt/1.3.22.1i
> As for the fix, I would think that would be more up to the
> network folks than me.  Atomic is one option, but you can
> also disable preemption.  It is really light weight, and may
> already be disabled in some of these cases.

In most of them because it is running in a softirq.
Just the user context stuff has a possible problem on non i386/x86-64.

-Andi

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