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Commit 2b279419 authored by Yonghong Song's avatar Yonghong Song Committed by Daniel Borkmann
Browse files

tools/bpf: adjust rlimit RLIMIT_MEMLOCK for test_verifier_log 



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 prog load:
  # ./test_verifier_log
  Test log_level 0...
  ERROR: Program load returned: ret:-1/errno:1, expected ret:-1/errno:22

Changing the default rlimit RLIMIT_MEMLOCK to unlimited makes
the test always pass.

Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 23721a75

tools/testing/selftests/bpf/test_verifier_log.c

+7 −0
Original line number Diff line number Diff line
@@ -3,6 +3,8 @@ 
#include <stdio.h>

#include <string.h>

#include <unistd.h>

#include <sys/time.h>

#include <sys/resource.h>



#include <linux/bpf.h>

#include <linux/filter.h>
@@ -131,11 +133,16 @@ static void test_log_bad(char *log, size_t log_len, int log_level) 


int main(int argc, char **argv)

{

	struct rlimit limit  = { RLIM_INFINITY, RLIM_INFINITY };

	char full_log[LOG_SIZE];

	char log[LOG_SIZE];

	size_t want_len;

	int i;



	/* allow unlimited locked memory to have more consistent error code */

	if (setrlimit(RLIMIT_MEMLOCK, &limit) < 0)

		perror("Unable to lift memlock rlimit");



	memset(log, 1, LOG_SIZE);



	/* Test incorrect attr */