From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 30 Nov 2013 03:51:47 +0000 (-0500)
Subject: ecryptfs: fix failure handling in ->readlink()
X-Git-Tag: v3.14-rc1~78^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b22e8fedc19588864a6ba0acefbbed06f05ba713;p=pandora-kernel.git

ecryptfs: fix failure handling in ->readlink()

If ecryptfs_readlink_lower() fails, buf remains an uninitialized
pointer and passing it nd_set_link() won't do anything good.

Fixed by switching ecryptfs_readlink_lower() to saner API - make it
return buf or ERR_PTR(...) and update callers.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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