From: Miklos Szeredi <miklos@szeredi.hu>
This patch fixes an inode leak in fuse_get_dentry(). With libfuse this
practically never triggers, but a DoS exploit could be written.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/fs/fuse/inode.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletion(-)
diff -puN fs/fuse/inode.c~fuse-nfs-export-inode-leak-fix fs/fuse/inode.c
--- 25/fs/fuse/inode.c~fuse-nfs-export-inode-leak-fix Fri Mar 4 15:35:53 2005
+++ 25-akpm/fs/fuse/inode.c Fri Mar 4 15:35:53 2005
@@ -438,8 +438,12 @@ static struct dentry *fuse_get_dentry(st
return ERR_PTR(-ESTALE);
inode = ilookup5(sb, nodeid, fuse_inode_eq, &nodeid);
- if (!inode || inode->i_generation != generation)
+ if (!inode)
return ERR_PTR(-ESTALE);
+ if (inode->i_generation != generation) {
+ iput(inode);
+ return ERR_PTR(-ESTALE);
+ }
entry = d_alloc_anon(inode);
if (!entry) {
_