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authorIan Kent <raven@themaw.net>2008-05-01 07:35:07 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-01 11:04:01 -0400
commitcab0936aac8aa907c6bb814c2cf26385478f254b (patch)
tree7f0bcb8838f9cc2fd461a6468464042c6b94e987
parentafec570c32a0d116e3c68af583ed1d11110f12fc (diff)
autofs4: check for invalid dentry in getpath
Catch invalid dentry when calculating its path. Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/autofs4/waitq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 1fe28e4754c2..75e5955c3f6d 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -171,7 +171,7 @@ static int autofs4_getpath(struct autofs_sb_info *sbi,
171 for (tmp = dentry ; tmp != root ; tmp = tmp->d_parent) 171 for (tmp = dentry ; tmp != root ; tmp = tmp->d_parent)
172 len += tmp->d_name.len + 1; 172 len += tmp->d_name.len + 1;
173 173
174 if (--len > NAME_MAX) { 174 if (!len || --len > NAME_MAX) {
175 spin_unlock(&dcache_lock); 175 spin_unlock(&dcache_lock);
176 return 0; 176 return 0;
177 } 177 }