Bug 713463 - UV: fscache taints kernel; NFS requires fscache; NFS taints kernel
Summary: UV: fscache taints kernel; NFS requires fscache; NFS taints kernel
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.2
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: Frantisek Hrbata
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On: 696396 1020718
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-06-15 13:40 UTC by RHEL Program Management
Modified: 2018-11-29 20:23 UTC (History)
17 users (show)

Fixed In Version: kernel-2.6.32-131.13.1.el6
Doc Type: Bug Fix
Doc Text:
Prior to this update, loading the FS-Cache kernel module would cause the kernel to be tainted as a Technology Preview via the mark_tech_preview() function, which would cause kernel lock debugging to be disabled by the add_taint() function. However, the NFS and CIFS modules depend on the FS-Cache module so using either NFS or CIFS would cause the FS-Cache module to be loaded and the kernel tainted. With this update, FS-Cache only taints the kernel when a cache is brought online (for instance by starting the cachefilesd service) and, additionally, the add_taint() function has been modified so that it does not disable lock debugging for informational-only taints.
Clone Of:
Environment:
Last Closed: 2011-10-05 21:48:58 UTC
Target Upstream Version:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:1350 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2011-10-05 21:47:16 UTC

Description RHEL Program Management 2011-06-15 13:40:15 UTC 
This bug has been copied from bug #696396 and has been proposed
to be backported to 6.1 z-stream (EUS).
Comment 9 errata-xmlrpc 2011-10-05 21:48:58 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.

http://rhn.redhat.com/errata/RHSA-2011-1350.html
Comment 10 Martin Prpič 2011-10-06 13:38:32 UTC 
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Prior to this update, loading the FS-Cache kernel module would cause the kernel to be tainted as a Technology Preview via the mark_tech_preview() function, which would cause kernel lock debugging to be disabled by the add_taint() function. However, the NFS and CIFS modules depend on the FS-Cache module so using either NFS or CIFS would cause the FS-Cache module to be loaded and the kernel tainted. With this update, FS-Cache only taints the kernel when a cache is brought online (for instance by starting the cachefilesd service) and, additionally, the add_taint() function has been modified so that it does not disable lock debugging for informational-only taints.
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