From: Robert Baldyga Date: Fri, 27 Sep 2013 10:28:54 +0000 (+0200) Subject: usb: gadget: f_fs: fix error handling X-Git-Tag: firefly_0821_release~176^2~5134^2~12^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8854894c040cd68b463dccf267308250b336df40;p=firefly-linux-kernel-4.4.55.git usb: gadget: f_fs: fix error handling This patch add missing error check in ffs_func_bind() function, after ffs_do_descs() function call for high speed descriptors. Without this check it's possible that the module will try dereference incorrect pointer. [ balbi@ti.com : removed trailing empty line ] Acked-by: Michal Nazarewicz Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 1a66c5baa0d1..0da66bacb0d4 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -2264,6 +2264,8 @@ 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; } /*