openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Yonghong Song 2017-11-30 08:52:42 -08:00 committed by Daniel Borkmann
parent 23721a755f
commit 2b27941956
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
tools/testing/selftests/bpf/test_verifier_log.c
View File

@ -3,6 +3,8 @@
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <linux/bpf.h> #include <linux/bpf.h>
#include <linux/filter.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) int main(int argc, char **argv)
{ {
struct rlimit limit = { RLIM_INFINITY, RLIM_INFINITY };
char full_log[LOG_SIZE]; char full_log[LOG_SIZE];
char log[LOG_SIZE]; char log[LOG_SIZE];
size_t want_len; size_t want_len;
int i; 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); memset(log, 1, LOG_SIZE);
/* Test incorrect attr */ /* Test incorrect attr */