Bug 103813
Summary: | kernel crash at shutdown | ||
---|---|---|---|
Product: | Red Hat Enterprise Linux 3 | Reporter: | Shinya Narahara <naraha_s> |
Component: | kernel | Assignee: | Larry Woodman <lwoodman> |
Status: | CLOSED NOTABUG | QA Contact: | Brian Brock <bbrock> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 3.0 | CC: | anderson, jparadis |
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: | 2004-04-21 15:02:35 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: |
Description
Shinya Narahara
2003-09-05 10:25:55 UTC
You are right, this issue doesn't occur on HP IPF system, only occurs on HITACHI ColdFusion-2 system. We guess this is caused by acpi bios or Linux ACPI Handler, so we are investigating into this, to determine the cause depend on OS or hardware/firmware. ACPI Global Lock must be on a page which memory attribute is WB, because ACPI Global Lock uses cmpxchg to rewrite a lock variable. But after kernel-2.4.19, Linux sets memory attribute each 64MB. Our Itanium machine has ACPI Global Lock set as UC attribute because of memory hole near it. Thus cmpxchg causes kernel panic, like "Unsupported reference fault". EFI Spec desn't say our original SAL is wrong, but we've decided that we change the SAL to avoid this issue. So this'll never occur anymore. |