Re: Too many printks leads to hang?

From: Leon Woestenberg
Date: Sat May 15 2010 - 10:19:32 EST


Hello all,

On Sat, May 15, 2010 at 1:03 AM, Sarah Sharp
<sarah.a.sharp@xxxxxxxxxxxxxxx> wrote:
> Is it expected that excessive printks from interrupt context could lead
> to a system hang?  One of the stack traces I could grab looks like this:
>

I have seen spurious hangs while debugging a device driver, which
printk()d hundreds of messages per second.
Disabling netconsole solved all issues for me.

This was with Ubuntu 9.04 on x86 and I didn't update the kernel on
that machine yet, but I really should try against upstream kernel /
netconsole.

Regards,
--
Leon
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