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Bug 1395104

Summary: pci 0000:ff:1e.3: [Firmware Bug]: reg 0x10: invalid BAR (can't size)
Product: Red Hat Enterprise Linux 7 Reporter: Takayuki Nagata <tnagata>
Component: kernelAssignee: Prarit Bhargava <prarit>
kernel sub component: Other QA Contact: Vilém Maršík <vmarsik>
Status: CLOSED ERRATA Docs Contact:
Severity: medium    
Priority: medium CC: haruo.tomita, mstowe, yzheng
Version: 7.3   
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: kernel-3.10.0-526.el7 Doc Type: No Doc Update
Doc Text:
undefined
 Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-02 04:30:58 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1353018    
Attachments:
Description Flags
RHEL PATCH 1/1
none
dmesg after fix from 3.10.0-526.el7.x86_64 none

Description Takayuki Nagata 2016-11-15 07:38:54 UTC 
Description of problem:
The following message occurs.
~~~
pci 0000:ff:1e.3: [Firmware Bug]: reg 0x10: invalid BAR (can't size)
~~~

Version-Release number of selected component (if applicable):
kernel-3.10.0-514.el7.x86_64

How reproducible:
Always.

Steps to Reproduce:
1. Install RHEL7 into a Xeon E5-2603 v3 box.
2. Boot the system.
3.

Actual results:
The message occurs.

Expected results:
The message does not occur.

Additional info:
Found a upstream commit: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6af7e4f77259ee946103387372cb159f2e99a6d4
Comment 3 Prarit Bhargava 2016-11-18 12:46:39 UTC 
Created attachment 1221872 [details]
RHEL PATCH 1/1
Comment 5 Myron Stowe 2016-11-18 16:11:41 UTC 
(In reply to Takayuki Nagata from comment #1)
> The customer has required us to back port the upstream fix.

Takayuki:

You should inform the customer that the platform's BIOS is in violation.  While the kernel can work-around the issue, the root issue is the BIOS not hiding this device's non-conformant BAR.

Re:
http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-e5-v3-spec-update.pdf - look for the "HSE43" entry.  The expected behaviour is for the platform's BIOS to "hide" this device.
Comment 7 Rafael Aquini 2016-12-02 22:20:41 UTC 
Patch(es) committed on kernel repository and an interim kernel build is undergoing testing
Comment 9 Rafael Aquini 2016-12-05 12:55:10 UTC 
Patch(es) available on kernel-3.10.0-526.el7
Comment 12 Vilém Maršík 2016-12-09 18:23:51 UTC 
Created attachment 1230114 [details]
dmesg after fix from 3.10.0-526.el7.x86_64
Comment 13 Vilém Maršík 2016-12-09 18:26:28 UTC 
Following messages confirmed in 3.10.0-514.el7.x86_64, but not shown in 3.10.0-526.el7.x86_64

pci 0000:ff:1e.3: [Firmware Bug]: reg 0x10: invalid BAR (can't size)
pci 0000:bf:1e.3: [Firmware Bug]: reg 0x10: invalid BAR (can't size)
pci 0000:7f:1e.3: [Firmware Bug]: reg 0x10: invalid BAR (can't size)
pci 0000:3f:1e.3: [Firmware Bug]: reg 0x10: invalid BAR (can't size)

Considering verified.
Comment 16 errata-xmlrpc 2017-08-02 04:30:58 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2017:1842