From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 14 Sep 2014 01:59:43 +0000 (-0400)
Subject: be careful with nd->inode in path_init() and follow_dotdot_rcu()
X-Git-Tag: fixes-for-v3.18-merge-window~122^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4023bfc9f351;p=pandora-kernel.git

be careful with nd->inode in path_init() and follow_dotdot_rcu()

in the former we simply check if dentry is still valid after picking
its ->d_inode; in the latter we fetch ->d_inode in the same places
where we fetch dentry and its ->d_seq, under the same checks.

Cc: stable@vger.kernel.org # 2.6.38+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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