Bug 1338672
| Summary: | glibc: GCC 6 enablement for struct sockaddr_storage | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Florian Weimer <fweimer> |
| Component: | glibc | Assignee: | DJ Delorie <dj> |
| Status: | CLOSED ERRATA | QA Contact: | Sergey Kolosov <skolosov> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.3 | CC: | ashankar, dj, fweimer, mnewsome, pfrankli, skolosov |
| Target Milestone: | rc | Keywords: | Patch |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | glibc-2.17-171.el7 | Doc Type: | Bug Fix |
| Doc Text: |
Cause: New optimizations in GCC 6 may cause portions of struct sockaddr to not be copied in a simple assignment operation when aliasing is enabled. Does not affect GCC prior to version 6, including the bundled RHEL 7 gcc.
Consequence: Programs might get invalid data in copied structures.
Fix: With this patch, the padding is changed such that there are no undefined regions in the structure, forcing gcc to copy all data.
Result: Programs should no longer see uninitialized data in copied struct sockaddrs.
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Story Points: | --- |
| Clone Of: | 1337291 | Environment: | |
| Last Closed: | 2017-08-01 18:06:55 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1337291 | ||
| Bug Blocks: | 1338673, 1413146 | ||
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Description
Florian Weimer
2016-05-23 08:47:12 UTC
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2017:1916 |