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From:   gregkh@linuxfoundation.org
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Maciej Fijalkowski <maciej.fijalkowski@intel.com>,
        Daniel Borkmann <daniel@iogearbox.net>,
        =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn.topel@intel.com>
Subject: [PATCH 5.4 019/168] samples, bpf: Add missing munmap in xdpsock
Date:   Mon, 15 Mar 2021 14:54:11 +0100
Message-Id: <20210315135550.976065939@linuxfoundation.org>
In-Reply-To: <20210315135550.333963635@linuxfoundation.org>
References: <20210315135550.333963635@linuxfoundation.org>
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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

From: Maciej Fijalkowski <maciej.fijalkowski@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.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/bpf/20210303185636.18070-3-maciej.fijalkowski@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@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
@@ -783,5 +783,7 @@ int main(int argc, char **argv)
 	else
 		l2fwd_all();
 
+	munmap(bufs, NUM_FRAMES * opt_xsk_frame_size);
+
 	return 0;
 }