Bug 456218
| Summary: | kernel: serial open/close loop disables irq [rhel-5.3] | ||||||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | Eugene Teo (Security Response) <eteo> | ||||||||
| Component: | kernel | Assignee: | Eugene Teo (Security Response) <eteo> | ||||||||
| Status: | CLOSED ERRATA | QA Contact: | Martin Jenner <mjenner> | ||||||||
| Severity: | low | Docs Contact: | |||||||||
| Priority: | low | ||||||||||
| Version: | 5.3 | CC: | dzickus, lwang | ||||||||
| Target Milestone: | rc | ||||||||||
| Target Release: | --- | ||||||||||
| Hardware: | All | ||||||||||
| OS: | Linux | ||||||||||
| Whiteboard: | |||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||
| Doc Text: | Story Points: | --- | |||||||||
| Clone Of: | Environment: | ||||||||||
| Last Closed: | 2009-01-20 20:22:39 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: | |||||||||||
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Description
Eugene Teo (Security Response)
2008-07-22 09:51:49 UTC
Proposed upstream patch: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8528b0f1de1101c6002036fd53638fb21111d0ea Created attachment 312322 [details]
Upstream patch for this issue
Created attachment 312323 [details]
Proposed backported patch
Created attachment 312324 [details] Reproducer Source: http://bugzilla.kernel.org/attachment.cgi?id=9958&action=view The bug is reported to be reproducible if the kernel is compiled with CONFIG_PREEMPT_NONE=y. I have tested this on rhel-4, and rhel-5, but without success. On rhel-5, the kernel is compiled with CONFIG_PREEMPT_VOLUNTARY=y, and /dev/ttyS* are not accessible to local unprivileged users (unless you are in uucp group for /dev/ttyS[1-3]). Let's get it fixed anyway. This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. in kernel-2.6.18-100.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5 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/RHSA-2009-0225.html |