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Message-ID: <200612110330_MC3-1-D49B-BC0F@compuserve.com>
Date:	Mon, 11 Dec 2006 03:27:37 -0500
From:	Chuck Ebbert <76306.1226@...puserve.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Andrew Morton <akpm@...l.org>, Linus Torvalds <torvalds@...l.org>
Subject: [patch] pipe: Don't oops when pipe filesystem isn't mounted

Prevent oops when an app tries to create a pipe while pipefs
is not mounted.

Signed-off-by: Chuck Ebbert <76306.1226@...puserve.com>

--- 2.6.19.1-pre1-32.orig/fs/pipe.c
+++ 2.6.19.1-pre1-32/fs/pipe.c
@@ -839,9 +839,11 @@ static struct dentry_operations pipefs_d
 
 static struct inode * get_pipe_inode(void)
 {
-	struct inode *inode = new_inode(pipe_mnt->mnt_sb);
+	struct inode *inode = NULL;
 	struct pipe_inode_info *pipe;
 
+	if (pipe_mnt)
+		inode = new_inode(pipe_mnt->mnt_sb);
 	if (!inode)
 		goto fail_inode;
 
-- 
Chuck
-
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