Bug 451317 - deadlock when rpc_malloc tries to flush NFS pages
deadlock when rpc_malloc tries to flush NFS pages
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity medium
: rc
: ---
Assigned To: Jeff Layton
Martin Jenner
: 454266 (view as bug list)
Depends On: 450743
  Show dependency treegraph
Reported: 2008-06-13 15:44 EDT by Jeff Layton
Modified: 2012-01-03 23:42 EST (History)
7 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2009-01-20 15:14:38 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
proposed patch -- don't allow rpc_malloc to block (2.25 KB, patch)
2008-07-07 07:24 EDT, Jeff Layton
no flags Details | Diff

  None (edit)
Comment 1 Jeff Layton 2008-06-13 15:45:38 EDT
Cloning bug for RHEL5. I think it's likely to be vulnerable to the same problem.
Lowering sev/pri here though since no one has hit this on RHEL5 that I'm aware of...
Comment 2 RHEL Product and Program Management 2008-06-19 10:24:21 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 Jeff Layton 2008-07-07 07:01:02 EDT
*** Bug 454266 has been marked as a duplicate of this bug. ***
Comment 5 Jeff Layton 2008-07-07 07:24:21 EDT
Created attachment 311138 [details]
proposed patch -- don't allow rpc_malloc to block

proposed patch -- untested as of yet
Comment 6 Jeff Layton 2008-07-09 09:24:22 EDT
Tested and seems to work OK
Comment 7 Jeff Layton 2008-07-09 09:24:58 EDT
Patch posted to RHKL:

Subject: [RHEL5.3 PATCH] BZ#451317: sunrpc: prevent deadlock by not allowing
rpc_malloc to sleep
Comment 8 Don Zickus 2008-07-18 16:07:48 EDT
in kernel-2.6.18-98.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5
Comment 12 errata-xmlrpc 2009-01-20 15:14:38 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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