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![Al Viro](https://secure.gravatar.com/avatar/b1fecf6b03fc62f894bef52b49551915.jpg?s=96&d=mm)
Al Viro committed e72b9dd6a5f
ecryptfs_lookup_interpose(): lower_dentry->d_inode is not stable lower_dentry can't go from positive to negative (we have it pinned), but it *can* go from negative to positive. So fetching ->d_inode into a local variable, doing a blocking allocation, checking that now ->d_inode is non-NULL and feeding the value we'd fetched earlier to a function that won't accept NULL is not a good idea. Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>