From: David Yang davidcomponentone@gmail.com
[ Upstream commit b599015f044df53e93ad0a2957b615bc1a26bf73 ]
The coccinelle check report: "./samples/bpf/xdp_redirect_cpu_user.c:397:32-38: ERROR: application of sizeof to pointer" Using the "strlen" to fix it.
Reported-by: Zeal Robot zealci@zte.com.cn Signed-off-by: David Yang davidcomponentone@gmail.com Signed-off-by: Andrii Nakryiko andrii@kernel.org Link: https://lore.kernel.org/bpf/20211012111649.983253-1-davidcomponentone@gmail.... Signed-off-by: Sasha Levin sashal@kernel.org --- samples/bpf/xdp_redirect_cpu_user.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/samples/bpf/xdp_redirect_cpu_user.c b/samples/bpf/xdp_redirect_cpu_user.c index 6e25fba64c72b..d84e6949007cc 100644 --- a/samples/bpf/xdp_redirect_cpu_user.c +++ b/samples/bpf/xdp_redirect_cpu_user.c @@ -325,7 +325,6 @@ int main(int argc, char **argv) int add_cpu = -1; int ifindex = -1; int *cpu, i, opt; - char *ifname; __u32 qsize; int n_cpus;
@@ -393,9 +392,8 @@ int main(int argc, char **argv) fprintf(stderr, "-d/--dev name too long\n"); goto end_cpu; } - ifname = (char *)&ifname_buf; - safe_strncpy(ifname, optarg, sizeof(ifname)); - ifindex = if_nametoindex(ifname); + safe_strncpy(ifname_buf, optarg, strlen(ifname_buf)); + ifindex = if_nametoindex(ifname_buf); if (!ifindex) ifindex = strtoul(optarg, NULL, 0); if (!ifindex) {