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Bug 597334 - reg_regdb_search_lock calls kmalloc while holding spinlock
reg_regdb_search_lock calls kmalloc while holding spinlock
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
low Severity medium
: rc
: ---
Assigned To: John W. Linville
Red Hat Kernel QE team
Depends On:
  Show dependency treegraph
Reported: 2010-05-28 13:03 EDT by John W. Linville
Modified: 2011-01-13 16:34 EST (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2011-01-13 16:34:57 EST
Type: ---
Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
jwltest-wireless_-convert-reg_regdb_search_lock_to_mutex.patch (2.16 KB, application/octet-stream)
2010-05-28 13:03 EDT, John W. Linville
no flags Details

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0017 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 5.6 kernel security and bug fix update 2011-01-13 05:37:42 EST

  None (edit)
Description John W. Linville 2010-05-28 13:03:27 EDT
Created attachment 417685 [details]

Stanse discovered that kmalloc is being called with GFP_KERNEL while
holding this spinlock.  The spinlock can be a mutex instead, which also
enables the removal of the unlock/lock around the lock/unlock of
cfg80211_mutex and the call to set_regdom.
Comment 2 RHEL Product and Program Management 2010-05-28 13:21:33 EDT
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
Comment 4 Jarod Wilson 2010-06-14 14:23:50 EDT
in kernel-2.6.18-203.el5
You can download this test kernel from http://people.redhat.com/jwilson/el5

Detailed testing feedback is always welcomed.
Comment 8 errata-xmlrpc 2011-01-13 16:34:57 EST
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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