linux-kernel - Re: commit 554f76962d3a6eb5110415f1591aca83f96a84ae hangs USB for vmware 7.0.1

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <201003061003.50671.oliver@neukum.org>
Date:	Sat, 6 Mar 2010 10:03:50 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Jeff Chua <jeff.chua.linux@...il.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jeff Chua <jeff.tw.chua@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"Greg Kroah-Hartman" <gregkh@...e.de>,
	Frederic Weisbecker <fweisbec@...il.com>, petr@...are.com,
	Eli Collins <ecollins@...are.com>
Subject: Re: commit 554f76962d3a6eb5110415f1591aca83f96a84ae hangs USB for vmware 7.0.1

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
--
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/