Bug 856675 - ipvs: fix oops in ip_vs_dst_event on rmmod
ipvs: fix oops in ip_vs_dst_event on rmmod
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel (Show other bugs)
Unspecified Linux
unspecified Severity unspecified
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Assigned To: John Kacur
David Sommerseth
Depends On:
Blocks: 856679
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Reported: 2012-09-12 10:50 EDT by John Kacur
Modified: 2016-05-22 19:35 EDT (History)
3 users (show)

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Doc Type: Bug Fix
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Clone Of:
: 856679 (view as bug list)
Last Closed: 2012-09-18 15:19:40 EDT
Type: Bug
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Description John Kacur 2012-09-12 10:50:23 EDT
The following commit is needed

commit 283283c4da91adc44b03519f434ee1e7e91d6fdb
Author: Julian Anastasov <ja@ssi.bg>
Date:   Sat Jul 7 20:30:11 2012 +0300

    ipvs: fix oops in ip_vs_dst_event on rmmod
        After commit 39f618b4fd95ae243d940ec64c961009c74e3333 (3.4)
    "ipvs: reset ipvs pointer in netns" we can oops in
    ip_vs_dst_event on rmmod ip_vs because ip_vs_control_cleanup
    is called after the ipvs_core_ops subsys is unregistered and
    net->ipvs is NULL. Fix it by exiting early from ip_vs_dst_event
    if ipvs is NULL. It is safe because all services and dests
    for the net are already freed.
Comment 1 John Kacur 2012-09-12 10:55:00 EDT
Changed 2.2 to devel, as this is for the 3.4-rt kernel

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