https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248225
Bug ID: 248225
Summary: Linuxulator: pthread_join crash
Product: Base System
Version: 12.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
% cat pthread-crash.c
#define _GNU_SOURCE
#include <pthread.h>
#include <stdio.h>
static void* test(void* arg) {
printf("%s started\n", __func__);
return NULL;
}
int main() {
pthread_t t;
pthread_create(&t, NULL, test, NULL);
void* val;
pthread_join(t, &val);
pthread_join(t, &val);
return 0;
}
% /compat/linux/bin/gcc -Wall pthread-crash.c -pthread -o pthread-crash
% ./pthread-crash
test started
Segmentation fault (core dumped)
It should be noted, while calling pthread_join in that manner is explicitly
discouraged in both FreeBSD and Linux man pages, some programs (Steam) still
occasionally do this and this does not lead to crash on Linux.
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