linux-kernel - Re: 2.6.30-rc6: Reported regressions from 2.6.29

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Message-ID: <20090520011358.GH6066@nowhere>
Date:	Wed, 20 May 2009 03:14:01 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	rob <rob1@...setosell.net>
Cc:	Borislav Petkov <petkovbb@...glemail.com>,
	Ingo Molnar <mingo@...e.hu>, Helge Deller <deller@....de>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Kyle McMartin <kyle@...artin.ca>
Subject: Re: 2.6.30-rc6: Reported regressions from 2.6.29

On Mon, May 18, 2009 at 06:35:28PM +0200, Bartlomiej Zolnierkiewicz wrote:
> On Sunday 17 May 2009 18:19:16 Borislav Petkov wrote:
> > Hi,
> > 
> > On Sun, May 17, 2009 at 03:32:11PM +0200, Frederic Weisbecker wrote:
> > > On Sun, May 17, 2009 at 09:33:27AM +0200, Ingo Molnar wrote:
> > > > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=13297
> > > > > Subject		: kernel panic -  not syncing : fatel exception in interupt
> > > > > Submitter	: rob <rob1@...setosell.net>
> > > > > Date		: 2009-05-12 19:34 (5 days old)
> > > > > References	: http://marc.info/?l=linux-kernel&m=124216126903309&w=4
> > > > 
> > > > tainted crash, but probably legit. It does show some badness in an 
> > > > old-IDE legacy codepath:
> > > > 
> > > > [<c0371865>] error_code+0x65/0x6c
> > > > [<c0110155>] do_page_fault+0x0/0x1e0
> > > > [<c027dafc>] ide_complete_rq+0xf/0x3b
> > > > [<c02870a0>] cdrom_newpc_intr+0x64d/0x6cd
> > > > [<c0286a53>] cdrom_newpc_intr+0x0/0x6cd
> > > > [<c027dcc2>] ide_intr+0x109/0x161
> > > > [<c0132298>] handle_IRQ_event+0x54/0xc7
> > > > [<c013354a>] handle_level_irq+0x4f/0x85
> > > > [<c0103df7>] handle_irq+0x17/0x20
> > > > [<c0103da5>] do_IRQ+0x2b/0x66
> > > > [<c0102be9>] common_interupt+0x29/0x30
> > > > [<c0480000>] cmd40x_init+0x2ac/0x38d
> > > > [<c0106db3>] default_idle+0x25/0x38
> > > > [<c01019be>] cpu_idle+0x19/0x2d
> > > > [<c0468907>] start_kernel+0x23f/0x242
> > > > 
> > > > report subject line is too unspecific, it should be changed to 
> > > > something like:
> > > > 
> > > >   legacy IDE cmd40x related bootup crash
> > > 
> > > 
> > > It seems the crash has been rewritten by hand. I don't see
> > > any cmd40x_init(), I guess it's about cmd640 chipset, then
> > > cmd640x_init()
> 
> Frederic, is the oops reproducible?  Is 2.6.30-rc6 any better?
> 
> Does it help if you disable CONFIG_BLK_DEV_CMD640?
> (this system doesn't have CMD640 chipset)


Sorry, I'm not the author of this bug report and I don't have this
hardware. I've just added you in Cc's :-)

But I'm adding the bug reporter in Cc.

Rob, could you test above Bartlomiej's suggestion?

Thanks,

Frederic.

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