Commit ba916a13 authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Greg Kroah-Hartman
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fuse: verify nlink 



commit c634da71 upstream.

When adding a new hard link, make sure that i_nlink doesn't overflow.

Fixes: ac45d613 ("fuse: fix nlink after unlink")
Cc: <stable@vger.kernel.org> # v3.4
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a266e907

fs/fuse/dir.c

+2 −1
Original line number Diff line number Diff line
@@ -862,6 +862,7 @@ static int fuse_link(struct dentry *entry, struct inode *newdir, 


		spin_lock(&fi->lock);

		fi->attr_version = atomic64_inc_return(&fc->attr_version);

		if (likely(inode->i_nlink < UINT_MAX))

			inc_nlink(inode);

		spin_unlock(&fi->lock);

		fuse_invalidate_attr(inode);