linux-kernel - Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi

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 for Android: free password hash cracker in your pocket

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

Date:	Thu, 28 Jan 2010 19:40:12 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Greg KH <greg@...ah.com>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>, dvomlehn@...co.com,
	gregkh@...e.de, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi_loader to hang

Am Donnerstag, 28. Januar 2010 18:45:46 schrieb Greg KH:
> On Tue, Jan 19, 2010 at 02:20:29PM +0100, Oliver Neukum wrote:
> > Am Montag, 18. Januar 2010 21:14:16 schrieb Matthew Garrett:
> > 
> > > drivers/usb/serial/generic.c: usb_serial_generic_write - port 0, 1565 
> > > bytes
> > > drivers/usb/serial/generic.c: usb_serial_generic_write - put 0 bytes 
> > > into fifo
> > > drivers/usb/serial/generic.c: usb_serial_generic_read_bulk_callback - 
> > > port 0
> > 
> > If the FIFO is full we can do nothing. Please try the attached patch.
> 
> Did we ever determine if the patch below is needed or not?

No. Further discussion cast serious doubt on it, but we have no
experimental evidence I am aware of.

	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/