[Bugs] [Bug 1456385] glusterfs client crash on io-cache.so(__ioc_page_wakeup+0x44 )

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1456385



--- Comment #6 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/17410 committed in master by Jeff Darcy
(jeff at pl.atyp.us) 
------
commit 6b6162f7ff93bccef0e615cb490e881168827e1d
Author: N Balachandran <nbalacha at redhat.com>
Date:   Mon May 29 15:21:39 2017 +0530

    perf/ioc: Fix race causing crash when accessing freed page

    ioc_inode_wakeup does not lock the ioc_inode for the duration
    of the operation, leaving a window where ioc_prune could find
    a NULL waitq and hence free the page which ioc_inode_wakeup later
    tries to access.

    Thanks to Mohit for the analysis.

    credit: moagrawa at redhat.com

    Change-Id: I54b064857e2694826d0c03b23f8014e3984a3330
    BUG: 1456385
    Signed-off-by: N Balachandran <nbalacha at redhat.com>
    Reviewed-on: https://review.gluster.org/17410
    Reviewed-by: Raghavendra G <rgowdapp at redhat.com>
    Tested-by: Raghavendra G <rgowdapp at redhat.com>
    Smoke: Gluster Build System <jenkins at build.gluster.org>
    NetBSD-regression: NetBSD Build System <jenkins at build.gluster.org>
    CentOS-regression: Gluster Build System <jenkins at build.gluster.org>
    Reviewed-by: Jeff Darcy <jeff at pl.atyp.us>

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