fuse: verify nlink
authorMiklos Szeredi <mszeredi@redhat.com>
Tue, 12 Nov 2019 10:49:04 +0000 (11:49 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 13 Dec 2019 07:52:35 +0000 (08:52 +0100)
commit9f435a5e3f5f28e20a6b6cfc2301cf5310f6238a
treea5038cdcac7b917543572b2ddf2028d5c35d1563
parent742f2319cbd61d9a051f532ad8c83bb33b48f442
fuse: verify nlink

commit c634da718db9b2fac201df2ae1b1b095344ce5eb upstream.

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

Fixes: ac45d61357e8 ("fuse: fix nlink after unlink")
Cc: <stable@vger.kernel.org> # v3.4
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/fuse/dir.c