fuse: fix oops in revalidate when called with NULL nameidata · d24339059d - Gogs

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
e7c0a16786 "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>

Miklos Szeredi 14 years ago

parent

693d92a1bb

commit

d24339059d

1 changed files with 1 additions and 1 deletions

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							+ 1
							
							- 1
						
fs/fuse/dir.c
							 
								View File
							
				@@ -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);