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authorIan Kent <raven@themaw.net>2008-05-01 04:35:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-01 08:04:01 -0700
commitcab0936aac8aa907c6bb814c2cf26385478f254b (patch)
tree7f0bcb8838f9cc2fd461a6468464042c6b94e987 /fs/autofs4/waitq.c
parentafec570c32a0d116e3c68af583ed1d11110f12fc (diff)
downloadvexpress-lsk-cab0936aac8aa907c6bb814c2cf26385478f254b.tar.gz
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>
Diffstat (limited to 'fs/autofs4/waitq.c')
-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 1fe28e4754c..75e5955c3f6 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -171,7 +171,7 @@ static int autofs4_getpath(struct autofs_sb_info *sbi,
for (tmp = dentry ; tmp != root ; tmp = tmp->d_parent)
len += tmp->d_name.len + 1;
- if (--len > NAME_MAX) {
+ if (!len || --len > NAME_MAX) {
spin_unlock(&dcache_lock);
return 0;
}