This is a note to let you know that I've just added the patch titled samples, bpf: Add missing munmap in xdpsock to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: samples-bpf-add-missing-munmap-in-xdpsock.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 6bc6699881012b5bd5d49fa861a69a37fc01b49c Mon Sep 17 00:00:00 2001 From: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx> Date: Wed, 3 Mar 2021 19:56:35 +0100 Subject: samples, bpf: Add missing munmap in xdpsock MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx> 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@xxxxxxxxx> Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx> Acked-by: Björn Töpel <bjorn.topel@xxxxxxxxx> Link: https://lore.kernel.org/bpf/20210303185636.18070-3-maciej.fijalkowski@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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; } Patches currently in stable-queue which might be from maciej.fijalkowski@xxxxxxxxx are queue-5.4/samples-bpf-add-missing-munmap-in-xdpsock.patch