Commit d2433905 authored May 10, 2011 by Miklos Szeredi

fuse: fix oops in revalidate when called with NULL nameidata

Some cases (e.g. ecryptfs) can call ->dentry_revalidate with NULL
nameidata.

https://bugzilla.kernel.org/show_bug.cgi?id=34732



Tyler Hicks pointed out that this bug was introduced by commit
e7c0a167 "fuse: make fuse_dentry_revalidate() RCU aware"

Reported-by: Witold Baryluk <baryluk@smp.if.uj.edu.pl>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

parent 693d92a1

fs/fuse/dir.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -174,7 +174,7 @@ static int fuse_dentry_revalidate(struct dentry entry, struct nameidata nd)
		if (!inode)
		return 0;

		if (nd->flags & LOOKUP_RCU)
		if (nd && (nd->flags & LOOKUP_RCU))
		return -ECHILD;

		fc = get_fuse_conn(inode);