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Date: Wed, 19 Oct 2005 13:22:46 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Lee Revell <rlrevell@joe-job.com>, Mark Knecht <markknecht@gmail.com>,
       linux-kernel@vger.kernel.org, rmk@arm.linux.org.uk
Subject: Re: scsi_eh / 1394 bug - -rt7
Message-ID: <20051019112246.GA32378@elte.hu>
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* Steven Rostedt <rostedt@goodmis.org> wrote:

> > Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
> > usb 2-1: USB disconnect, address 2
> > prev->state: 2 != TASK_RUNNING??
> > scsi_eh_0/12648[CPU#0]: BUG in __schedule at kernel/sched.c:3326
> >  [<c01048b9>] dump_stack+0x19/0x20 (20)
> >  [<c011e766>] __WARN_ON+0x46/0x80 (12)
> >  [<c02c0bf7>] __schedule+0x547/0x790 (84)
> >  [<c012057a>] do_exit+0x26a/0x430 (28)
> >  [<c010147b>] kernel_thread_helper+0xb/0x10 (1020129312)
> >
> 
> This is also a problem in the upstream kernel.  It's just that RT 
> catches it!  Here's the patch. I'll also write one for the upstream 
> kernel, although this patch would probably work there as well. But 
> I'll make it official.
> 
> Ingo,
> 
> Here's the patch.  The problem is similar to the pcmcia bug.  It seems 
> that the loop usually exits in the TASK_INTERRUPTIBLE state.

thanks, applied and released in 2.6.14-rc4-rt10.

	Ingo
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