[Bugs] [Bug 1345855] Possible crash due to a timer cancellation race

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1345855



--- Comment #4 from Vijay Bellur <vbellur at redhat.com> ---
COMMIT: http://review.gluster.org/14712 committed in master by Pranith Kumar
Karampuri (pkarampu at redhat.com) 
------
commit fb013a9db2cc019d36b07644f24e6c15ed39725c
Author: Xavier Hernandez <xhernandez at datalab.es>
Date:   Mon Jun 13 12:42:47 2016 +0200

    cluster/ec: Fix race in timer cancellation

    A race in timer cancellation for delayed unlock could cause a crash
    if the cancelling thread fails to cancel the timer because it has
    already been fired but not executed, and the callback is scheduled
    out of the CPU, delaying it until the thread has released important
    resources needed by the callback.

    This patch improves the handling of this case to make it robust.

    Change-Id: I5c8a8c6610c5136f71b938aa78b5878ba05238d4
    BUG: 1345855
    Signed-off-by: Xavier Hernandez <xhernandez at datalab.es>
    Reviewed-on: http://review.gluster.org/14712
    Smoke: Gluster Build System <jenkins at build.gluster.com>
    NetBSD-regression: NetBSD Build System <jenkins at build.gluster.org>
    CentOS-regression: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Pranith Kumar Karampuri <pkarampu at redhat.com>

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