[PATCH 5.11 032/306] samples, bpf: Add missing munmap in xdpsock

[gregkh]

From: Greg Kroah-Hartman <gre...@linuxfoundation.org>

From: Maciej Fijalkowski <maciej.fijalkow...@intel.com>

commit 6bc6699881012b5bd5d49fa861a69a37fc01b49c upstream.

We mmap the umem region, but we never munmap it.
Add the missing call at the end of the cleanup.

Fixes: 3945b37a975d ("samples/bpf: use hugepages in xdpsock app")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkow...@intel.com>
Signed-off-by: Daniel Borkmann <dan...@iogearbox.net>
Acked-by: Björn Töpel <bjorn.to...@intel.com>
Link: 
https://lore.kernel.org/bpf/20210303185636.18070-3-maciej.fijalkow...@intel.com
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 samples/bpf/xdpsock_user.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -1699,5 +1699,7 @@ int main(int argc, char **argv)
 
        xdpsock_cleanup();
 
+       munmap(bufs, NUM_FRAMES * opt_xsk_frame_size);
+
        return 0;
 }