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 07:42:30 +0000 (08:42 +0100)
commitba916a1310661973cd9a5d0509c3f9e3fe59c0c3
tree46b6144cd1f6d5114cb07b95fe02d370dfb034b6
parenta266e9072a08bd130eea4c1b8a76d1a6574b23f3
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