Re: OOPs in do_select()

Padraig Brady (
Mon, 25 Mar 2002 20:14:28 +0000

kernel was 2.4.16


Padraig Brady wrote:
> This happened on an embedded system so
> I haven't got a standard OOPs, but anyway
> the message was:
> "Unable to handle kernel NULL pointer dereference at 00000000"
> looking at the trace and doing a little poking around
> the error was definitely in do_select, and maybe on the
> following line:
> if (!(bit & BITS(fds, off)))
> The cause was there was a client talking to a server
> over a socket and the server SEGFAULTED. The OOPs was
> associated with the client process.
> Note the client was often seen to crash when the server
> did, suggesting it received bad data from the kernel?
> cheers,
> Padraig.

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