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Date: Sun, 8 Apr 2012 21:46:28 -0400 From: Devin Heitmueller <dheitmueller@...nellabs.com> To: Larry Finger <Larry.Finger@...inger.net> Cc: Mauro Carvalho Chehab <mchehab@...radead.org>, Hans Verkuil <hans.verkuil@...co.com>, linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, jrh <jharbestonus@...il.com> Subject: Re: [PATCH] media: au0828: Convert BUG_ON to WARN_ONCE On Sun, Apr 8, 2012 at 7:19 PM, Larry Finger <Larry.Finger@...inger.net> wrote: > In the mail thread at http://www.mythtv.org/pipermail/mythtv-users/2012-April/331164.html, > a kernel crash is triggered when trying to run mythtv with a HVR950Q tuner. > The crash condition is due to res_free() being called to free something that > has is not reserved. The actual reason for this mismatch of reserve/free is > not known; however, using a BUG_ON rather than a WARN_ON seems unfortunate. This patch should be nack'd. The real reason should be identified, and a patch should be submitted for that (and from what I gather, it seems like it is easily reproduced by the submitter). Just add a few "dump_stack()" calls in the res_get() and res_free() calls to identify the failing call path. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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