Bug 106969
| Summary: | Random stall during boot-up | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Jun'ichi NOMURA <junichi.nomura> |
| Component: | kernel | Assignee: | Jason Baron <jbaron> |
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> |
| Severity: | high | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | CC: | knoel, lwoodman, marty, petrides |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | ia64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-09-13 20:23:28 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: | |||
An errata 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-2004-188.html yes, a bug for this also against rhel2.1 is helpful for tracking. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; ja-JP; rv:1.4) Gecko/20030930 Debian/1.4-5 Description of problem: On SMP machine boot-up, the operating system may stall while fork-ing processes from /sbin/init. The stall occurs randomly. Usually after invoking /sbin/init and before showing login prompt. This can be fixed by the patch recently posted to linux-ia64.org. Version-Release number of selected component (if applicable): kernel-2.4.21-3.EL How reproducible: Sometimes Steps to Reproduce: 1. Boot-up on SMP machine 2. (repeat step 1) 3. Actual Results: Boot-up process will stall somewhere after invoking rc script. For example, it may stall after printing the following message: Remounting root filesystem in read-write mode: [ OK ] Activating swap partitions: [ OK ] Finding module dependencies: [ OK ] Expected Results: Eventually, login prompt should appear on console. Additional info: The problem is caused by wrong setup of initial value of kr[CURRENT_STACK] which is used in ia64_switch_to() to determine if the kernel address is already mapped. ia64_switch_to() assumes the value of this register should be based on the kernel granule size (16MB for current configuration). But its initial value is wrongly calculated based on 64MB. Thus, during the first task switch, the kernel could take unmapped address as already mapped, refer to it and fall into infinite TLB miss loop. The patch to fix this problem was posted to linux-ia64.org with subject "wrong initial ia64_kr(current_stack) value" at Oct. 9 by Chenn, Kenneth W. http://marc.theaimsgroup.com/?l=linux-ia64&m=106571413927132&w=2