From: Pete Zaitcev <zaitcev@redhat.com>
To: Dirk Hohndel <hohndel@infradead.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Alan Stern <stern@rowland.harvard.edu>,
Sarah Sharp <sarah.a.sharp@linux.intel.com>,
linux-usb@vger.kernel.org,
Matthew Dharm <mdharm-usb@one-eyed-alien.net>,
linux-scsi@vger.kernel.org
Subject: Re: strange USB storage failure with 2.6.29-rc2
Date: Wed, 28 Jan 2009 14:13:29 -0700 [thread overview]
Message-ID: <20090128141329.f427232b.zaitcev@redhat.com> (raw)
In-Reply-To: <20090128120129.68d04cd6@infradead.org>
On Wed, 28 Jan 2009 12:01:29 -0800, Dirk Hohndel <hohndel@infradead.org> wrote:
> Any recommendations how to best approach debugging this? Attaching
> strace to some processes before inserting the usb stick?
I would try add some dump_stack() to ->queuecommand, to see if this
is SG_IO or other source. Finding who sends the commands is the key.
Another trick is to printk the completion handlers (w/ lookup_symbol).
-- Pete
next prev parent reply other threads:[~2009-01-28 21:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090127122641.1564fc46@infradead.org>
[not found] ` <Pine.LNX.4.44L0.0901271548370.2286-100000@iolanthe.rowland.org>
[not found] ` <Pine.LNX.4.44L0.0901271548370.2286-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2009-01-28 4:06 ` strange USB storage failure with 2.6.29-rc2 Dirk Hohndel
[not found] ` <20090127200607.369a1693-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2009-01-28 16:54 ` Alan Stern
2009-01-28 17:14 ` Dirk Hohndel
2009-01-28 17:47 ` Alan Stern
2009-01-28 19:59 ` Dirk Hohndel
2009-01-28 20:14 ` Alan Stern
[not found] ` <20090128091406.316a80fc-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2009-01-28 17:59 ` James Bottomley
2009-01-28 20:01 ` Dirk Hohndel
2009-01-28 21:13 ` Pete Zaitcev [this message]
2009-01-28 21:23 ` Alan Stern
2009-01-28 21:29 ` Pete Zaitcev
[not found] ` <20090128142915.3b6f1949.zaitcev-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-01-28 21:41 ` Alan Stern
2009-01-28 21:49 ` Oliver Neukum
[not found] ` <Pine.LNX.4.44L0.0901281622210.2231-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2009-01-28 22:39 ` Dirk Hohndel
2009-01-28 21:10 ` Pete Zaitcev
[not found] ` <20090128141035.3a26ea60.zaitcev-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-01-28 21:21 ` Alan Stern
2009-01-28 21:22 ` Dirk Hohndel
[not found] ` <20090128132228.3f1e2f8a-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2009-01-28 21:27 ` Pete Zaitcev
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