| Summary: | Leak of /proc/mtrr file descriptor by pci_system_cleanup | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Daniel Berrangé <berrange> | ||||||
| Component: | libpciaccess | Assignee: | Dave Airlie <airlied> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | BaseOS QE Security Team <qe-baseos-security> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | medium | ||||||||
| Version: | 6.1 | CC: | syeghiay | ||||||
| Target Milestone: | rc | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | Unspecified | ||||||||
| OS: | Unspecified | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2011-05-19 14:30:38 UTC | Type: | --- | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Attachments: |
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Created attachment 477456 [details]
Proposed patch to close /proc/mtrr
This request was evaluated by Red Hat Product Management for inclusion in the current release of Red Hat Enterprise Linux. Because the affected component is not scheduled to be updated in the current release, Red Hat is unfortunately unable to address this request at this time. Red Hat invites you to ask your support representative to propose this request, if appropriate and relevant, in the next release of Red Hat Enterprise Linux. If you would like it considered as an exception in the current release, please ask your support representative. 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 therefore 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/RHBA-2011-0806.html |
Created attachment 477455 [details] Demo program for /proc/mtrr leak Description of problem: The pci_system_init() function opens the /proc/mtrr file and saves its file descriptor. pci_system_cleanup() fails to close this file descriptor resulting in a leak of the FD. Version-Release number of selected component (if applicable): libpciaccess-0.10.9-2.el6 How reproducible: Always Steps to Reproduce: 1. Save attached demo to pcidemo.c 2. gcc -o pcidemo pcidemo.c -lpciaccess 3. valgrind --track-fds=yes ./pcidemo Actual results: ==7197== FILE DESCRIPTORS: 4 open at exit. ==7197== Open file descriptor 3: /proc/mtrr ==7197== at 0x5105FC0: __open_nocancel (syscall-template.S:82) ==7197== by 0x4E302C3: pci_system_linux_sysfs_create (fcntl2.h:54) ==7197== by 0x40062C: main (in /root/pcidemo) Expected results: No leaked FD for /proc/mtrr Additional info: