lkml.org 
[lkml]   [2013]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] USB: gadget: f_fs: fix error handling
Date
This patch add missing error check in ffs_func_bind() function, after
ffs_do_descs() funcion call for hs descriptors. Without this check it's
possible that the module will try dereference incorrect pointer.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
---
drivers/usb/gadget/f_fs.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 1a66c5b..fe7d532 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -2264,7 +2264,10 @@ static int ffs_func_bind(struct usb_configuration *c,
data->raw_descs + ret,
(sizeof data->raw_descs) - ret,
__ffs_func_bind_do_descs, func);
+ if (unlikely(ret < 0))
+ goto error;
}
+

/*
* Now handle interface numbers allocation and interface and
--
1.7.9.5


\
 
 \ /
  Last update: 2013-09-27 12:41    [W:0.117 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site