Bug 712806

Summary: kernel BUG at drivers/pci/intel-iommu.c:1656 while registering memory for InfiniBand
Product: [Fedora] Fedora Reporter: Albert Strasheim <fullung>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 15CC: aquini, fullung, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: kernel-2.6.38.8-35.fc15 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-07-12 05:25:45 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Albert Strasheim 2011-06-13 08:39:29 UTC
Description of problem:

Kernel crashes when multiple instances of a program register memory and send it to other instances on the same machine.

Version-Release number of selected component (if applicable):

kernel-2.6.38.6-26.rc1.fc15.x86_64

How reproducible:

Always

Steps to Reproduce:

I can probably attach a binary that reproduces the problem if anyone is interested in configuring a test machine.
  
Actual results:

Kernel crash

Comment 1 Chuck Ebbert 2011-06-25 14:45:47 UTC
I believe this will be fixed in 2.6.38.8-35; in the meantime you can work around it with "iommu=soft" if you don't need the isolation/security provided by the iommu.

Comment 2 Fedora Update System 2011-07-07 01:00:22 UTC
kernel-2.6.38.8-35.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/kernel-2.6.38.8-35.fc15

Comment 3 Fedora Update System 2011-07-08 17:58:48 UTC
Package kernel-2.6.38.8-35.fc15:
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kernel-2.6.38.8-35.fc15'
as soon as you are able to, then reboot.
Please go to the following url:
https://admin.fedoraproject.org/updates/kernel-2.6.38.8-35.fc15
then log in and leave karma (feedback).

Comment 4 Fedora Update System 2011-07-12 05:24:48 UTC
kernel-2.6.38.8-35.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.