Bug 146710
| Summary: | pthread_getspecific gets non-NULL value for new key | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Erik Kane <erikkane> | ||||
| Component: | glibc | Assignee: | Jakub Jelinek <jakub> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3.0 | CC: | msimons, roland | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i686 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | RHBA-2005-096 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2005-05-18 14:00:03 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: | |||||||
| Attachments: |
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Created attachment 110465 [details]
sample program with build & run instructions
For RHEL4 fixed in glibc-2.3.4-2.4. For RHEL3 fixed in glibc-2.3.2-95.32. This patch fixes the test case and the real program it came from. - When should the offical RHEL3 glibc-2.3.2-95.32 be available? hrmm... been a while and still no errata released, when should an offical RHEL3 binary be available? so, it's been a few months... and glibc-2.3.2-95.32 is still not available as an errata for RHEL3, what's blocking this? An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2005-256.html |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Description of problem: Memory locations returned by pthread_getspecific are not zero'ed across pthread_key_delete/pthread_key_create calls, as stated in the documentation "The value initialized associated with the returned key is NULL". The result is that a new key returned by thread_key_create / pthread_getspecific will not be initialized to zero if: ((the area was freed by a pthread_key_delete) and (when freed the pthread_getspecific area was not NULL)) This problem happens on AS 3 when NPTL is not used (LD_ASSUME_KERNEL=2.4.1). The problem does not recreate on AS 3 when NPTL is used (LD_ASSUME_KERNEL=2.4.20 or not setting LAK). The problem was does not appear to happen on AS 2.1 Please see the Sample_Run (attached below) for more details. Version-Release number of selected component (if applicable): glibc-2.3.2-95.20.i686 How reproducible: Always Steps to Reproduce: 1. Extract attached files 2. Build program by running "make" 3. Run program using NPTL: "LD_ASSUME_KERNEL=2.4.20 ./getspecific" (works) 4. Run program without NPTL: "LD_ASSUME_KERNEL=2.4.1 ./getspecific" (fails) Actual Results: see attached file "Sample_Run" Additional info: