From: Ian Kent <raven@themaw.net>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>,
autofs mailing list <autofs@linux.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: [PATCH] autofs4 - check for invalid dentry in getpath
Date: Mon, 28 Apr 2008 14:21:21 +0800 (WST) [thread overview]
Message-ID: <Pine.LNX.4.64.0804281419430.10684@raven.themaw.net> (raw)
Hi Andrew,
Patch to catch invalid dentry when calculating it's path.
Signed-off-by: Ian Kent <raven@themaw.net>
Ian
---
diff -up linux-2.6.25-rc2-mm1/fs/autofs4/waitq.c.getpath-check-valid-dentry linux-2.6.25-rc2-mm1/fs/autofs4/waitq.c
--- linux-2.6.25-rc2-mm1/fs/autofs4/waitq.c.getpath-check-valid-dentry 2008-02-20 12:55:39.000000000 +0900
+++ linux-2.6.25-rc2-mm1/fs/autofs4/waitq.c 2008-02-20 12:54:46.000000000 +0900
@@ -171,7 +171,7 @@ static int autofs4_getpath(struct autofs
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;
}
--
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reply other threads:[~2008-04-28 6:22 UTC|newest]
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