linux-kernel - Re: [PATCH] USB: fix deadlock in HCD code

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

Message-ID: <Pine.LNX.4.64.0805211533500.6718@jikos.suse.cz>
Date:	Wed, 21 May 2008 15:36:49 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Oliver Neukum <oliver@...kum.org>
cc:	Greg KH <greg@...ah.com>, linux-usb@...r.kernel.org,
	Alan Stern <stern@...land.harvard.edu>, lchiquitto@...ell.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: fix deadlock in HCD code

On Wed, 21 May 2008, Oliver Neukum wrote:

> This turns out not to be the case. Interrupts are disabled.

You're right, this callchain can't cause the deadlock indeed. I'll go 
through the other possibilities.

To give some background to others reading this thread -- Leonardo (in CC) 
reported [1] that this patch fixes hard kernel hangs he has been seeing 
when using USB CDMA modem.

Still, we don't currently seem to see the place where the interrupts get 
enabled that makes the deadlock to trigger.

[1] https://bugzilla.novell.com/show_bug.cgi?id=378509

-- 
Jiri Kosina
SUSE Labs
--
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/