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From: Oliver Neukum <oliver@neukum.org>
To: Jeff Chua <jeff.chua.linux@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Jeff Chua <jeff.tw.chua@gmail.com>,
	Linux Kernel <linux-kernel@vger.kernel.org>,
	"Greg Kroah-Hartman" <gregkh@suse.de>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	petr@vmware.com, Eli Collins <ecollins@vmware.com>
Subject: Re: commit 554f76962d3a6eb5110415f1591aca83f96a84ae hangs USB for vmware 7.0.1
Date: Sat, 6 Mar 2010 10:03:50 +0100	[thread overview]
Message-ID: <201003061003.50671.oliver@neukum.org> (raw)
In-Reply-To: <b6a2187b1003052122w105851abhd54a32f77aef22c4@mail.gmail.com>

Am Samstag, 6. März 2010 06:22:48 schrieb Jeff Chua:
> It seems to hang trying to read from /proc/bus/usb/devices.
> 
> So, next I just try to "cat /proc/bus/usb/devices" and it hangs as well.
> 
> Reverting the commit makes "cat /proc/bus/usb/devices" works again.
> 
> Does this happen to me only?

As far as I can tell, yes. I cannot replicate it.

Please get me at least a sysrq-T trace.
There's no obvious place usb_device_read() takes usbfs_mutex.

	Regards
		Oliver

      parent reply	other threads:[~2010-03-06  9:04 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-05 22:18 commit 554f76962d3a6eb5110415f1591aca83f96a84ae hangs USB for vmware 7.0.1 Jeff Chua
2010-03-05 22:40 ` Linus Torvalds
2010-03-06  3:45   ` Petr Vandrovec
     [not found]     ` <b6a2187b1003052129l7703dee6s6e820b8ca18b9e2d@mail.gmail.com>
2010-03-06  6:46       ` Petr Vandrovec
2010-03-06  9:33         ` Dmitry Torokhov
2010-03-06 11:12           ` Oliver Neukum
2010-03-06 18:48             ` Heinz Diehl
     [not found]   ` <b6a2187b1003052122w105851abhd54a32f77aef22c4@mail.gmail.com>
2010-03-06  9:03     ` Oliver Neukum [this message]

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