linux-kernel - Re: [Oops] on 2.6.23-rc9 sysRq Show Tasks (t)

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Date:	Sun, 7 Oct 2007 01:12:38 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	"Ahmed S. Darwish" <darwish.07@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [Oops] on 2.6.23-rc9 sysRq Show Tasks (t)

On Sat, Oct 06, 2007 at 10:14:06PM +0200, Ahmed S. Darwish wrote:
> Pressing sysRq+T always produce an Oops for every running system task (94 
> Oopses, that's a record ;)).

uh-oh. For every sleeping task, I think.

> The bug is 100% reproducable. Should I begin bisecting/investigating the 
> issue or it's a known problem ?

Start with some old kernel, like mmm.. 2.6.0. The fact that same behaviour
was present there may make you think about faulty assumptions you've
made.

> [  226.309874] SysRq : Show State
> [  226.309948]   task                PC stack   pid father
> [  226.310105] init          S c1465b64     0     1      0
> [  226.310195]        c1465b54 00000082 00000286 c1465b64 c04255c0 c03c3ec0 00000000 00000286 
> [  226.310414]        c1465b64 fffd689a 0000000b 00000000 c02e8fda c1537040 00000292 c0425ab4 
> [  226.310664]        c0425ab4 fffd689a c0123cd0 c14634f0 c04255c0 00000800 c1465f9c c0176bf5 
> [  226.310914] Call Trace:
> [  226.310995]  [<c02e8fda>] schedule_timeout+0x4a/0xc0
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