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[Bug 668872] New: kdump does not work - ioremap: invalid physical address
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Wed, 2 Feb 2011 12:39:01 +0000
  • Message-id: <bug-668872-21960@http.bugzilla.novell.com/>

https://bugzilla.novell.com/show_bug.cgi?id=668872

https://bugzilla.novell.com/show_bug.cgi?id=668872#c0


Summary: kdump does not work - ioremap: invalid physical
address
Classification: openSUSE
Product: openSUSE 11.4
Version: Milestone 5 of 6
Platform: Other
OS/Version: Other
Status: NEW
Severity: Minor
Priority: P5 - None
Component: Kernel
AssignedTo: joerg.roedel@xxxxxxx
ReportedBy: trenn@xxxxxxxxxx
QAContact: qa@xxxxxxx
CC: hare@xxxxxxxxxx, agraf@xxxxxxxxxx,
boris.ostrovsky@xxxxxxx
Found By: Development
Blocker: ---


On a Dinar AMD system kdump does not work with latest kernel (openSUSE 11.4,
2.6.37.20).
I run into this when finding something else causing a kernel crash.
Might be related to iommu?
-> already assigning to Joerg. I doubt someone else here would otherwise look
at this issue for 11.4.

iommu=soft does not help. Hmm, it might behave a bit different with iommu=soft.
I reserved 128M for the crash kernel, with iommu=soft it run into an out of
memory condition, but when increasing to 256M also iommu=soft shows the same
__ioremap WARN_ON and backtrace.

I'll attach the full serial console output of the productive kernel and the
kdump kernel booting.

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