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Date: Mon, 10 Feb 2020 22:29:02 +0300
From: Alexander Scherbatiy <alexander.scherbatiy@...l-sw.com>
To: musl@...ts.openwall.com
Subject: No such process return value in pthread_getcpuclockid
Hello,
It seems that pthread_getcpuclockid does not properly handle non valid
thread id argument.
Below is a sample which calls pthread_getcpuclockid with NULL thread id.
The expected result is ESRCH (No thread with the ID thread could be
found). It crashes in my docker with Alpine Linux 3.11.3 (musl libc
x86_64 1.1.24). It returns ESRCH on my Ubuntu system.
--- pthread_getcpuclockid_sample.c ---
#include <time.h>
#include <stdio.h>
#include <pthread.h>
#include <errno.h>
int main()
{
clockid_t cid;
int s;
s = pthread_getcpuclockid((pthread_t) NULL, &cid);
if (s == ESRCH) {
printf("result: ESRCH\n");
} else {
printf("result: %d\n", s);
}
return 0;
}
--------------------------------------
> gcc -pthread -o pthread_getcpuclockid_sample
pthread_getcpuclockid_sample.c
> ./pthread_getcpuclockid_sample
Segmentation fault (core dumped)
Thanks,
Alexander.
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