linux-kernel - Re: Keyboard stops working after *lock [Was: 2.6.21-rc2-mm1]

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]

Date:	Thu, 15 Mar 2007 16:00:32 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Jiri Slaby <jirislaby@...il.com>
cc:	Jiri Kosina <jikos@...os.cz>, <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Keyboard stops working after *lock [Was: 2.6.21-rc2-mm1]

On Tue, 13 Mar 2007, Jiri Slaby wrote:

> So, do you mean rmmod uhci_hcd, unplug the keyboard, modprobe
> uhci_hcd, start usbmon, plug the keyboard, press numlock, stop usbmon,
> post it?

By the way, what happens if you press CapsLock rather than NumLock?  It 
should behave pretty the same, sending a command to the keyboard to change 
an LED setting.  Does the keyboard then stop working in the same way?

Alan Stern

P.S.: When you do your testing, please apply the patch below.  I don't 
know if it's related to your problem, but I did see this error show up in 
someone else's system log.


Index: usb-2.6/drivers/usb/host/uhci-q.c
===================================================================
--- usb-2.6.orig/drivers/usb/host/uhci-q.c
+++ usb-2.6/drivers/usb/host/uhci-q.c
@@ -139,8 +139,10 @@ static struct uhci_td *uhci_alloc_td(str
 
 static void uhci_free_td(struct uhci_hcd *uhci, struct uhci_td *td)
 {
-	if (!list_empty(&td->list))
+	if (!list_empty(&td->list)) {
 		dev_warn(uhci_dev(uhci), "td %p still in list!\n", td);
+		WARN_ON(1);
+	}
 	if (!list_empty(&td->fl_list))
 		dev_warn(uhci_dev(uhci), "td %p still in fl_list!\n", td);
 

-
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/