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[PATCH 1/4] autofs4 - check for invalid dentry in getpath

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From: Ian Kent <raven@...>
To: Andrew Morton <akpm@...>
Cc: Kernel Mailing List <linux-kernel@...>, autofs mailing list <autofs@...>, linux-fsdevel <linux-fsdevel@...>
Subject: [PATCH 1/4] autofs4 - check for invalid dentry in getpath
Date: Monday, February 25, 2008 - 11:22 pm

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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Messages in current thread:
[PATCH 0/4] autofs4 - autofs needs a miscelaneous device for..., Ian Kent, (Mon Feb 25, 11:21 pm)
Re: [PATCH 0/4] autofs4 - autofs needs a miscelaneous device..., Andrew Morton, (Thu Feb 28, 12:40 am)
Re: [PATCH 0/4] autofs4 - autofs needs a miscelaneous device..., Ian Kent, (Thu Feb 28, 2:07 am)
[PATCH 2/4] autofs4 - add mount option to display mount device, Ian Kent, (Tue Feb 26, 12:29 am)
Re: [PATCH 2/4] autofs4 - add mount option to display mount ..., Andrew Morton, (Thu Feb 28, 1:17 am)
[PATCH 4/4] autofs4 - add miscelaneous device for ioctls, Ian Kent, (Mon Feb 25, 11:23 pm)
Re: [PATCH 4/4] autofs4 - add miscelaneous device for ioctls, Andrew Morton, (Thu Feb 28, 1:17 am)
Re: [PATCH 4/4] autofs4 - add miscelaneous device for ioctls, Ian Kent, (Fri Feb 29, 12:24 pm)
Re: [PATCH 4/4] autofs4 - add miscelaneous device for ioctls, Ian Kent, (Fri Apr 11, 3:02 am)
Re: [PATCH 4/4] autofs4 - add miscelaneous device for ioctls, Andrew Morton, (Sat Apr 12, 12:03 am)
Re: [PATCH 4/4] autofs4 - add miscelaneous device for ioctls, Ian Kent, (Mon Apr 14, 12:45 am)
Re: [PATCH 4/4] autofs4 - add miscelaneous device for ioctls, Ian Kent, (Thu Feb 28, 2:18 am)
[RFC] Re: [PATCH 4/4] autofs4 - add miscelaneous device for ..., Ian Kent, (Thu Mar 13, 3:00 am)
Re: [RFC] Re: [PATCH 4/4] autofs4 - add miscelaneous device ..., Thomas Graf, (Fri Mar 14, 8:45 am)
Re: [RFC] Re: [PATCH 4/4] autofs4 - add miscelaneous device ..., Ian Kent, (Fri Mar 14, 10:10 am)
Re: [RFC] Re: [PATCH 4/4] autofs4 - add miscelaneous device ..., Ian Kent, (Thu Mar 13, 10:45 pm)
[PATCH 3/4] autofs4 - track uid and gid of last mount reques..., Ian Kent, (Mon Feb 25, 11:23 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Andrew Morton, (Thu Feb 28, 12:45 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Ian Kent, (Thu Feb 28, 2:22 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Andrew Morton, (Thu Feb 28, 2:37 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Ian Kent, (Thu Feb 28, 3:08 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Pavel Emelyanov, (Thu Feb 28, 3:51 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Eric W. Biederman, (Thu Feb 28, 4:33 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Andrew Morton, (Thu Feb 28, 3:59 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Ian Kent, (Thu Feb 28, 4:06 am)
Re: [autofs] [PATCH 3/4] autofs4 - track uid and gid of last..., Fabio Olive Leite, (Thu Feb 28, 8:31 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Andrew Morton, (Thu Feb 28, 3:23 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Ian Kent, (Thu Feb 28, 4:00 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Jeff Moyer, (Thu Feb 28, 1:13 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Serge E. Hallyn, (Thu Feb 28, 3:51 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Ian Kent, (Thu Feb 28, 11:32 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Serge E. Hallyn, (Fri Feb 29, 12:09 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Eric W. Biederman, (Sat Mar 1, 9:13 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Serge E. Hallyn, (Mon Mar 3, 11:28 am)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Eric W. Biederman, (Tue Mar 4, 6:16 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Eric W. Biederman, (Sat Mar 1, 8:49 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Pavel Emelyanov, (Fri Feb 29, 12:20 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Serge E. Hallyn, (Fri Feb 29, 1:42 pm)
Re: [PATCH 3/4] autofs4 - track uid and gid of last mount re..., Ian Kent, (Tue Feb 26, 1:14 am)
[PATCH 1/4] autofs4 - check for invalid dentry in getpath, Ian Kent, (Mon Feb 25, 11:22 pm)