selftests/bpf: test_xsk: Initialize bitmap before use

bitmap is used before being initialized.

Initialize it to zero before using it.

Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com>
Link: https://lore.kernel.org/r/20251031-xsk-v7-2-39fe486593a3@bootlin.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/testing/selftests/bpf/test_xsk.c b/tools/testing/selftests/bpf/test_xsk.c
index 02250f29f9946d1ca701e30a900617056d91587b..679491b6b9dd80ccb2b92729141fb8715b874c6d 100644 (file)
--- a/tools/testing/selftests/bpf/test_xsk.c
+++ b/tools/testing/selftests/bpf/test_xsk.c
@@ -1069,6 +1069,8 @@ static int receive_pkts(struct test_spec *test)
        u32 sock_num = 0;
        int res, ret;
 
+       bitmap_zero(bitmap, test->nb_sockets);
+
        ret = gettimeofday(&tv_now, NULL);
        if (ret)
                exit_with_error(errno);
@@ -1259,6 +1261,8 @@ static int send_pkts(struct test_spec *test, struct ifobject *ifobject)
        DECLARE_BITMAP(bitmap, test->nb_sockets);
        u32 i, ret;
 
+       bitmap_zero(bitmap, test->nb_sockets);
+
        while (!(all_packets_sent(test, bitmap))) {
                for (i = 0; i < test->nb_sockets; i++) {
                        struct pkt_stream *pkt_stream;