Bug 745726
| Summary: | Host crash when pass-through fails [rhel-5.7.z] | ||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | kernel-xen | Assignee: | Phillip Lougher <plougher> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 5.8 | CC: | dhoward, drjones, jpallich, jzheng, leiwang, lersek, pbonzini, pm-eus, qguan, qwan, sforsber, tburke, xen-maint, yuzhou |
| Target Milestone: | rc | Keywords: | Regression, ZStream |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | kernel-2.6.18-274.11.1.el5 | Doc Type: | Bug Fix |
| Doc Text: |
A previously applied patch (introduced as a fix in CVE-2011-1898) prevented PCI pass-through inside the assign_device domctl via a security check. Because the security check was not included in the test_assign_device domctl as well, qemu-dm may have started to encounter failures in the assign_device domctl, ultimately causing an HVM guest to have a partly accessible PCI device, which in some cases resulted in a crash of the host machine. With this update, the security check introduced in CVE-2011-1898 has been replicated in the test_assign_device domctl, thus fixing this issue.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-11-29 14:36:48 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: | |||
| Bug Depends On: | 740203 | ||
| Bug Blocks: | |||
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Description
RHEL Program Management
2011-10-13 08:33:55 UTC
in kernel-2.6.18-274.11.1.el5 xen-make-test_assign_device-domctl-dependent-on-intremap-hw.patch xen-propagate-target-dom-within-xen_domctl_test_assign_device.patch 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. http://rhn.redhat.com/errata/RHSA-2011-1479.html
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
A previously applied patch (introduced as a fix in CVE-2011-1898) prevented PCI pass-through inside the assign_device domctl via a security check. Because the security check was not included in the test_assign_device domctl, qemu-dm could not handle any failures in the test_assign_device domctl, ultimately causing an HVM guest to have a partly accessible PCI device, which in come cases resulted in a crash of the host machine. With this update, the security check introduced in CVE-2011-1898 has been replicated in the test_assign_device domctl, thus fixing this issue.
Technical note updated. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Diffed Contents:
@@ -1 +1 @@
-A previously applied patch (introduced as a fix in CVE-2011-1898) prevented PCI pass-through inside the assign_device domctl via a security check. Because the security check was not included in the test_assign_device domctl, qemu-dm could not handle any failures in the test_assign_device domctl, ultimately causing an HVM guest to have a partly accessible PCI device, which in come cases resulted in a crash of the host machine. With this update, the security check introduced in CVE-2011-1898 has been replicated in the test_assign_device domctl, thus fixing this issue.+A previously applied patch (introduced as a fix in CVE-2011-1898) prevented PCI pass-through inside the assign_device domctl via a security check. Because the security check was not included in the test_assign_device domctl as well, qemu-dm may have started to encounter failures in the assign_device domctl, ultimately causing an HVM guest to have a partly accessible PCI device, which in some cases resulted in a crash of the host machine. With this update, the security check introduced in CVE-2011-1898 has been replicated in the test_assign_device domctl, thus fixing this issue.
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