# Segmentation faults Percona Server 5.6.19 **URL:** \ **Category:** Percona Server for MySQL 5.6\ **Created:** [July 10, 2014, 10:13am UTC](https://forums.percona.com/t/segmentation-faults-percona-server-5-6-19/3607 "2014-07-10T10:13:05Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![tcoker](https://avatars.discourse-cdn.com/v4/letter/t/ecc23a/32.png) [@tcoker](https://forums.percona.com/u/tcoker)\ **Post date:** [July 10, 2014, 10:13am UTC](https://forums.percona.com/t/segmentation-faults-percona-server-5-6-19/3607/1 "2014-07-10T10:13:05Z")
Hi, I’m hoping for a little guidance with this. I have had two of these crashes now on a recent installation of Percona Server 5.6.19 on CentOS 6.5. The problem happens when accessing ARCHIVE tables. Does this look like a bug? 16:05:46 UTC - mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. Please help us make Percona Server better by reporting any bugs at [url][System Dashboard - Percona JIRA](http://bugs.percona.com/%5B/url%5D) key\_buffer\_size=1073741824 read\_buffer\_size=1048576 max\_used\_connections=188 max\_threads=2002 thread\_count=177 connection\_count=176 It is possible that mysqld could use up to key\_buffer\_size + (read\_buffer\_size + sort\_buffer\_size)\*max\_threads = 7228203 K bytes of memory Hope that’s ok; if not, decrease some variables in the equation. Thread pointer: 0x17e85e60 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong… stack\_bottom = 7f7c813f8d40 thread\_stack 0x30000 /usr/sbin/mysqld(my\_print\_stacktrace+0x2c)[0x8bb80c] /usr/sbin/mysqld(handle\_fatal\_signal+0x479)[0x6504b9] /lib64/libpthread.so.0[0x3af3a0f710] /usr/sbin/mysqld(\_ZN10ha\_archive10unpack\_rowEP11azio\_streamPh+0xf5)[0xadb385] /usr/sbin/mysqld(\_ZN10ha\_archive8rnd\_nextEPh+0x7a)[0xadb8ba] /usr/sbin/mysqld(\_ZN7handler11ha\_rnd\_nextEPh+0x5d)[0x597c5d] /usr/sbin/mysqld(\_Z13rr\_sequentialP11READ\_RECORD+0x20)[0x7f5780] /usr/sbin/mysqld(\_Z10sub\_selectP4JOINP13st\_join\_tableb+0x101)[0x6adbf1] /usr/sbin/mysqld(\_ZN4JOIN4execEv+0x2b8)[0x6ace68] /usr/sbin/mysqld(\_Z12mysql\_selectP3THDP10TABLE\_LISTjR4ListI4ItemEPS4\_P10SQL\_I\_ListI8st\_orderESB\_S7\_yP13select\_resultP18st\_select\_lex\_unitP13st\_select\_lex+0x275)[0x6f56b5] /usr/sbin/mysqld(\_Z13handle\_selectP3THDP13select\_resultm+0x165)[0x6f5f15] /usr/sbin/mysqld[0x559ee0] /usr/sbin/mysqld(\_Z21mysql\_execute\_commandP3THD+0x1cec)[0x6cfe3c] /usr/sbin/mysqld(\_Z11mysql\_parseP3THDPcjP12Parser\_state+0x5c8)[0x6d5078] /usr/sbin/mysqld(\_Z16dispatch\_command19enum\_server\_commandP3THDPcj+0xfa7)[0x6d6807] /usr/sbin/mysqld(\_Z24do\_handle\_one\_connectionP3THD+0x162)[0x6a4882] /usr/sbin/mysqld(handle\_one\_connection+0x40)[0x6a4970] /usr/sbin/mysqld(pfs\_spawn\_thread+0x143)[0xb0dc13] /lib64/libpthread.so.0[0x3af3a079d1] /lib64/libc.so.6(clone+0x6d)[0x3af36e8b5d] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (7f7c380009a0): is an invalid pointer Connection ID (thread ID): 71 Status: NOT\_KILLED ================================================================ 08:11:21 UTC - mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. Please help us make Percona Server better by reporting any bugs at [url][System Dashboard - Percona JIRA](http://bugs.percona.com/%5B/url%5D) key\_buffer\_size=1073741824 read\_buffer\_size=1048576 max\_used\_connections=111 max\_threads=2002 thread\_count=31 connection\_count=30 It is possible that mysqld could use up to key\_buffer\_size + (read\_buffer\_size + sort\_buffer\_size)\*max\_threads = 7228203 K bytes of memory Hope that’s ok; if not, decrease some variables in the equation. Thread pointer: 0x17ede490 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong… stack\_bottom = 7fe1fcd8dd40 thread\_stack 0x30000 /usr/sbin/mysqld(my\_print\_stacktrace+0x2c)[0x8bb80c] /usr/sbin/mysqld(handle\_fatal\_signal+0x479)[0x6504b9] /lib64/libpthread.so.0[0x3af3a0f710] /usr/sbin/mysqld(\_ZN10ha\_archive10unpack\_rowEP11azio\_streamPh+0xf5)[0xadb385] /usr/sbin/mysqld(\_ZN10ha\_archive8optimizeEP3THDP15st\_ha\_check\_opt+0x2a7)[0xadbbf7] /usr/sbin/mysqld(\_ZN10ha\_archive6repairEP3THDP15st\_ha\_check\_opt+0x15)[0xad9145] /usr/sbin/mysqld(\_ZN10ha\_archive16check\_and\_repairEP3THD+0x31)[0xad92f1] /usr/sbin/mysqld(\_ZN18Open\_table\_context24recover\_from\_failed\_openEv+0x431)[0x68b941] /usr/sbin/mysqld(\_Z11open\_tablesP3THDPP10TABLE\_LISTPjjP19Prelocking\_strategy+0x4fe)[0x68c14e] /usr/sbin/mysqld(\_Z30open\_normal\_and\_derived\_tablesP3THDP10TABLE\_LISTj+0x51)[0x68cc51] /usr/sbin/mysqld[0x6fcd02] /usr/sbin/mysqld(\_Z14get\_all\_tablesP3THDP10TABLE\_LISTP4Item+0x191)[0x70f121] /usr/sbin/mysqld(\_Z24get\_schema\_tables\_resultP4JOIN23enum\_schema\_table\_state+0x2d2)[0x7100d2] /usr/sbin/mysqld(\_ZN4JOIN14prepare\_resultEPP4ListI4ItemE+0xa5)[0x6f0f15] /usr/sbin/mysqld(\_ZN4JOIN4execEv+0xac)[0x6acc5c] /usr/sbin/mysqld(\_Z12mysql\_selectP3THDP10TABLE\_LISTjR4ListI4ItemEPS4\_P10SQL\_I\_ListI8st\_orderESB\_S7\_yP13select\_resultP18st\_select\_lex\_unitP13st\_select\_lex+0x275)[0x6f56b5] /usr/sbin/mysqld(\_Z13handle\_selectP3THDP13select\_resultm+0x165)[0x6f5f15] /usr/sbin/mysqld[0x559ee0] /usr/sbin/mysqld(\_Z21mysql\_execute\_commandP3THD+0x1cec)[0x6cfe3c] /usr/sbin/mysqld(\_Z11mysql\_parseP3THDPcjP12Parser\_state+0x5c8)[0x6d5078] /usr/sbin/mysqld(\_Z16dispatch\_command19enum\_server\_commandP3THDPcj+0xfa7)[0x6d6807] /usr/sbin/mysqld(\_Z24do\_handle\_one\_connectionP3THD+0x162)[0x6a4882] /usr/sbin/mysqld(handle\_one\_connection+0x40)[0x6a4970] /usr/sbin/mysqld(pfs\_spawn\_thread+0x143)[0xb0dc13] /lib64/libpthread.so.0[0x3af3a079d1] /lib64/libc.so.6(clone+0x6d)[0x3af36e8b5d] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (7fe0f8004af0): is an invalid pointer Connection ID (thread ID): 5310 Status: NOT\_KILLED