Possibly related commits:
commit 40497577ffd9f85557b15e08ad913f627b2e9530
Author: Sergey Vojtovich <[email protected]>
Date: Fri Aug 29 16:02:46 2014 +0400
Backport from 10.0:
MDEV-6450 - MariaDB crash on Power8 when built with advance tool
chain
InnoDB mutex_exit() function calls __sync_test_and_set() to release
the lock. According to manual this function is supposed to create
"acquire" memory barrier whereas in fact we need "release" memory
barrier at mutex_exit().
The problem isn't repeatable with gcc because it creates
"acquire-release" memory barrier for __sync_test_and_set().
ATC creates just "acquire" barrier.
commit 5569132ffebba3fd2e37964543f658ed24d8caaf
Author: Michael Widenius <[email protected]>
Date: Tue Aug 19 19:28:35 2014 +0300
MDEV-6450 - MariaDB crash on Power8 when built with advance tool
chain
Part of this work is based on Stewart Smitch's memory barrier and lower
priori
patches for power8.
- Added memory syncronization for innodb & xtradb for power8.
- Added HAVE_WINDOWS_MM_FENCE to CMakeList.txt
- Added os_isync to fix a syncronization problem on power
- Added log_get_lsn_nowait which is now used srv_error_monitor_thread to
ensur
if log mutex is locked.
All changes done both for InnoDB and Xtradb
commit 82ce2a2503a95e8bdc76c351a87e98c93445a433
Author: Sergey Vojtovich <[email protected]>
Date: Mon Aug 4 11:55:38 2014 +0400
MDEV-6450 - MariaDB crash on Power8 when built with advance
tool chain
Reverted addition to the original patch:
InterlockedExchangeAcquire and InterlockedAndRelease are
supported only on Itanium-based systems.
commit 53360fd45f89e9b16aac69625820988702a339ee
Author: Sergey Vojtovich <[email protected]>
Date: Thu Jul 31 14:31:05 2014 +0400
MDEV-6450 - MariaDB crash on Power8 when built with advance
tool chain
This is an addition to the original patch. On Windows
InterlockedExchange implies full memory barrier, whereas
only acquire/release barriers required.
commit c0ebb3f38811c6a0e3e2b49b3ae40b4ea0c2b0e9
Author: Sergey Vojtovich <[email protected]>
Date: Fri Jul 18 15:16:25 2014 +0400
MDEV-6450 - MariaDB crash on Power8 when built with advance tool
chain
InnoDB mutex_exit() function calls __sync_test_and_set() to release
the lock. According to manual this function is supposed to create
"acquire" memory barrier whereas in fact we need "release" memory
barrier at mutex_exit().
The problem isn't repeatable with gcc because it creates
"acquire-release" memory barrier for __sync_test_and_set().
ATC creates just "acquire" barrier.
Fixed by creating proper barrier at mutex_exit() by using
__sync_lock_release() instead of __sync_test_and_set().
--------
Mario,
I provided you: http://inaddy.ddns.net:3333/~inaddy/trusty_percona-
xtradb-cluster-5.5_5.5.37-25.10%2bdfsg-0ubuntu0.14.04.3.debdiff based on
this last patch. This was the only patch backport from 10.0.
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https://bugs.launchpad.net/bugs/1657256
Title:
Percona crashes when doing a a 'larger' update
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