The default rlimit RLIMIT_MEMLOCK is 64KB. In certain cases,
e.g. in a test machine mimicking our production system, this test may
fail due to unable to charge the required memory for map creation:
# ./test_tcpbpf_user
libbpf: failed to create map (name: 'global_map'): Operation not permitted
libbpf: failed to load object 'test_tcpbpf_kern.o'
FAILED: load_bpf_file failed for: test_tcpbpf_kern.o
Changing the default rlimit RLIMIT_MEMLOCK to unlimited makes
the test always pass.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
#include <linux/ptrace.h>
#include <linux/bpf.h>
#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/resource.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(int argc, char **argv)
{
+ struct rlimit limit = { RLIM_INFINITY, RLIM_INFINITY };
const char *file = "test_tcpbpf_kern.o";
struct tcpbpf_globals g = {0};
int cg_fd, prog_fd, map_fd;
int pid;
int rv;
+ if (setrlimit(RLIMIT_MEMLOCK, &limit) < 0)
+ perror("Unable to lift memlock rlimit");
+
if (argc > 1 && strcmp(argv[1], "-d") == 0)
debug_flag = true;