lkml.org 
[lkml]   [2013]   [May]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] usb: gadget: r8a66597-udc: do not unlock unheld spinlock in r8a66597_sudmac_irq()
HI,

On Thu, May 30, 2013 at 12:51:37AM +0400, Alexey Khoroshilov wrote:
> r8a66597_irq() processes sudmac part (r8a66597_sudmac_irq()) before locking r8a66597->lock.
> But transfer_complete(), that is called inside (r8a66597_sudmac_irq()->sudmac_finish()->transfer_complete()),
> expects r8a66597->lock is locked. As a result unheld spinlock can be unlocked.
>
> The patch just moves locking before calling r8a66597_sudmac_irq().
>
> Found by Linux Driver Verification project (linuxtesting.org).
>
> Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>

should this go to stable ? Looks like this bug has been there since
2.6.32.

--
balbi
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2013-05-30 02:21    [W:0.045 / U:0.448 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site