SHOW STATUS causes segfault on 32-bit systems (CentOS)

Bug #1318304 reported by Alex Yurchenko on 2014-05-11
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MySQL patches by Codership
Status tracked in 5.6
5.5
High
Alex Yurchenko
5.6
Undecided
Unassigned
Percona XtraDB Cluster moved to https://jira.percona.com/projects/PXC
Status tracked in 5.6
5.5
Won't Fix
High
Unassigned
5.6
Invalid
High
Unassigned

Bug Description

The relevant stack trace:

#0 0x082a1e35 in my_atomic_cas64 (thd=0x94834d80, var=0x9494ca58, buff=0x9494ca6c "ON")
    at /home/ayurchen/redhat/BUILD/mysql-5.5.37_wsrep_25.10/mysql-5.5.37_wsrep_25.10/include/my_atomic.h:203
#1 my_atomic_load64 (thd=0x94834d80, var=0x9494ca58, buff=0x9494ca6c "ON") at /home/ayurchen/redhat/BUILD/mysql-5.5.37_wsrep_25.10/mysql-5.5.37_wsrep_25.10/include/my_atomic.h:218
#2 wsrep_show_bf_aborts (thd=0x94834d80, var=0x9494ca58, buff=0x9494ca6c "ON") at /home/ayurchen/redhat/BUILD/mysql-5.5.37_wsrep_25.10/mysql-5.5.37_wsrep_25.10/sql/wsrep_thd.cc:30

This is probably a bug in MySQL atomic macros or in GCC 4.4 used on CentOS

Related branches

Alex Yurchenko (ayurchen) wrote :

This is apparently a bug in 5.5 atomic macros - no such crash with 5.6 branch.

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PXC-1002

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