Bug 91571
| Summary: | pthread_join joins exitted thread | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Steve Grubb <linux_4ever> |
| Component: | glibc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED NOTABUG | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 9 | CC: | fweimer, mitr |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i586 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2003-05-26 10:47:10 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
This is ill formed. E.g. POSIX 2001, System Interfaces 2.9.2 allows thread IDs to be reused after pthread_join, essentially what you're trying to do is the same as accessing memory after free on it has been called. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.2.1) Gecko/20030225 Description of problem: pthread_join returns success when joining a thread that has already exitted. It should return ESRCH saying that it could not find the thread. Version-Release number of selected component (if applicable): glibc-2.3.2-27.9 How reproducible: Always Steps to Reproduce: 1. Compile and run the following program: #include <stdio.h> #include <pthread.h> #include <errno.h> void *a_thread_func() { pthread_exit(0); return NULL; } int main(void) { pthread_t new_th; int ret; if (pthread_create(&new_th, NULL, a_thread_func, NULL) != 0) { perror("Error creating thread\n"); return 1; } if ( pthread_join(new_th, NULL) !=0 ) { perror("Error in pthread_join()\n"); return 1; } if ( (ret=pthread_join(new_th, NULL)) != ESRCH) { printf("Return code should be ESRCH, but is: %d.\n", ret); return 1; } return 0; } Actual Results: Return code should be ESRCH, but is: 0. Expected Results: No output from the program.