From: Taesoo Kim <tsgatesv@gmail.com>
Date: Sat, 21 Mar 2015 23:08:30 +0000 (-0400)
Subject: cifs: potential memory leaks when parsing mnt opts
X-Git-Tag: omap-for-v4.1/fixes-rc1~235^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2bd50fb3d4d31f5168ecea221f291534cd0a96e9;p=pandora-kernel.git

cifs: potential memory leaks when parsing mnt opts

For example, when mount opt is redundently specified
(e.g., "user=A,user=B,user=C"), kernel kept allocating new key/val
with kstrdup() and overwrite previous ptr (to be freed).

Althouhg mount.cifs in userspace performs a bit of sanitization
(e.g., forcing one user option), current implementation is not
robust. Other options such as iocharset and domainanme are similarly
vulnerable.

Signed-off-by: Taesoo Kim <tsgatesv@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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