[MDEV-10670] CONNECT buffer overflow with ODBC on Linux Created: 2016-08-26  Updated: 2017-04-19

Status: Stalled
Project: MariaDB Server
Component/s: Storage Engine - Connect
Affects Version/s: 10.1.16
Fix Version/s: N/A

Type: Bug Priority: Major
Reporter: Chris Calender (Inactive) Assignee: Olivier Bertrand
Resolution: Unresolved Votes: 0
Labels: None


 Description   

Linux server: CentOS
MariaDB Enterprise 10.1.16-MariaDB

Running mysqldump on the instance generally triggers the buffer overflow (and using --quick and --skip-extended-inserts).

Kind of similar to https://jira.mariadb.org/browse/MDEV-9779 but slightly different in that it still exists and ODBC is being used.

Here is the full stack trace:

160823 15:13:22 [ERROR] 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.
 
 
 
To report this bug, see https://mariadb.com/kb/en/reporting-bugs
 
 
 
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.
 
 
 
Server version: 10.1.16-MariaDB
 
key_buffer_size=134217728
 
read_buffer_size=131072
 
max_used_connections=36
 
max_threads=302
 
thread_count=28
 
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 794389 K  bytes of memory
 
Hope that's ok; if not, decrease some variables in the equation.
 
 
 
Thread pointer: 0x0x7f8632ceb008
 
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 = 0x7f8654642130 thread_stack 0x48400
 
*** buffer overflow detected ***: /usr/sbin/mysqld terminated


======= Backtrace: =========
 
/lib64/libc.so.6(__fortify_fail+0x37)[0x7f88b48bb597]
 
/lib64/libc.so.6(+0x10c750)[0x7f88b48b9750]
 
/lib64/libc.so.6(+0x10e507)[0x7f88b48bb507]
 
/usr/sbin/mysqld(my_addr_resolve+0x48)[0x7f88b7357978]
 
/usr/sbin/mysqld(my_print_stacktrace+0x1c2)[0x7f88b7344082]
 
/usr/sbin/mysqld(handle_fatal_signal+0x2d5)[0x7f88b6e6b265]
 
/lib64/libpthread.so.0(+0xf100)[0x7f88b6489100]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0x13c0be)[0x7f867197f0be]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0x11e41a)[0x7f867196141a]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0x10a714)[0x7f867194d714]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0xf5ac0)[0x7f8671938ac0]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0x106e98)[0x7f8671949e98]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0x104ce4)[0x7f8671947ce4]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0x1059b2)[0x7f86719489b2]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0x8a53a)[0x7f86718cd53a]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(+0xb9246)[0x7f86718fc246]
 
/opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0(SQLDriverConnectW+0xe3b)[0x7f86718cfe1b]
 
/lib64/libodbc.so.2(SQLDriverConnect+0xdb8)[0x7f88b20a6c68]
 
/usr/lib64/mysql/plugin/ha_connect.so(_ZN7ODBConn13DriverConnectEj+0x5c)[0x7f88b0dac61c]
 
/usr/lib64/mysql/plugin/ha_connect.so(_ZN7ODBConn4OpenEPcP10odbc_parmsj+0x58)[0x7f88b0dac6e8]
 
/usr/lib64/mysql/plugin/ha_connect.so(_ZN7TDBODBC6OpenDBEP7_global+0x66)[0x7f88b0da7c86]
 
/usr/lib64/mysql/plugin/ha_connect.so(_Z12CntOpenTableP7_globalP3TDB4MODEPcS4_bP10ha_connect+0x3bd)[0x7f88b0d1fb9d]
 
/usr/lib64/mysql/plugin/ha_connect.so(_ZN10ha_connect9OpenTableEP7_globalb+0x1ac)[0x7f88b0d131bc]
 
/usr/lib64/mysql/plugin/ha_connect.so(_ZN10ha_connect8rnd_initEb+0x1d6)[0x7f88b0d13906]
 
/usr/sbin/mysqld(_ZN7handler22ha_rnd_init_with_errorEb+0x17)[0x7f88b6e70bc7]
 
/usr/sbin/mysqld(_Z16init_read_recordP11READ_RECORDP3THDP5TABLEP10SQL_SELECTibb+0x3f6)[0x7f88b6f73aa6]
 
/usr/sbin/mysqld(_Z21join_init_read_recordP13st_join_table+0x80)[0x7f88b6d224d0]
 
/usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x169)[0x7f88b6d22739]
 
/usr/sbin/mysqld(+0x47764d)[0x7f88b6d3164d]
 
/usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0xb4c)[0x7f88b6d4157c]
 
/usr/sbin/mysqld(_ZN4JOIN4execEv+0x54)[0x7f88b6d43574]
 
/usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x112)[0x7f88b6d3fc22]
 
/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x245)[0x7f88b6d406f5]
 
/usr/sbin/mysqld(+0x427b41)[0x7f88b6ce1b41]
 
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x5f8f)[0x7f88b6cedfff]
 
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x28e)[0x7f88b6cf18de]
 
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x25db)[0x7f88b6cf4d9b]
 
/usr/sbin/mysqld(_Z10do_commandP3THD+0x169)[0x7f88b6cf5619]
 
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x18a)[0x7f88b6db9c1a]
 
/usr/sbin/mysqld(handle_one_connection+0x40)[0x7f88b6db9df0]
 
/lib64/libpthread.so.0(+0x7dc5)[0x7f88b6481dc5]
 
/lib64/libc.so.6(clone+0x6d)[0x7f88b48a3ced]


======= Memory map: ========
 
7f85fcc00000-7f863bc00000 rw-p 00000000 00:00 0 
7f863bf3a000-7f863c73f000 r--s 00000000 00:22 210906                     /var/lib/sss/mc/passwd
 
7f863c73f000-7f863c747000 r-xp 00000000 00:22 64278                      /usr/lib64/libnss_sss.so.2
 
7f863c747000-7f863c946000 ---p 00008000 00:22 64278                      /usr/lib64/libnss_sss.so.2
 
7f863c946000-7f863c947000 r--p 00007000 00:22 64278                      /usr/lib64/libnss_sss.so.2
 
7f863c947000-7f863c948000 rw-p 00008000 00:22 64278                      /usr/lib64/libnss_sss.so.2
 
7f863cc00000-7f864a800000 rw-p 00000000 00:00 0 
7f864abb6000-7f864abb7000 ---p 00000000 00:00 0 
7f864abb7000-7f8654400000 rw-p 00000000 00:00 0                          [stack:12630]
 
7f865443e000-7f865443f000 ---p 00000000 00:00 0 
7f865443f000-7f8654488000 rw-p 00000000 00:00 0                          [stack:12601]
 
7f8654488000-7f8654489000 ---p 00000000 00:00 0 
7f8654489000-7f86544d2000 rw-p 00000000 00:00 0 
7f86544d2000-7f86544d3000 ---p 00000000 00:00 0 
7f86544d3000-7f865451c000 rw-p 00000000 00:00 0 
7f865451c000-7f865451d000 ---p 00000000 00:00 0 
7f865451d000-7f8654566000 rw-p 00000000 00:00 0                          [stack:12589]
 
7f8654566000-7f8654567000 ---p 00000000 00:00 0 
7f8654567000-7f86545b0000 rw-p 00000000 00:00 0                          [stack:8997]
 
7f86545b0000-7f86545b1000 ---p 00000000 00:00 0 
7f86545b1000-7f86545fa000 rw-p 00000000 00:00 0                          [stack:12628]
 
7f86545fa000-7f86545fb000 ---p 00000000 00:00 0 
7f86545fb000-7f8654644000 rw-p 00000000 00:00 0                          [stack:12650]
 
7f8654644000-7f8654645000 ---p 00000000 00:00 0 
7f8654645000-7f865468e000 rw-p 00000000 00:00 0                          [stack:12649]
 
7f865468e000-7f865468f000 ---p 00000000 00:00 0 
7f865468f000-7f86546d8000 rw-p 00000000 00:00 0                          [stack:12646]
 
7f86546d8000-7f86546d9000 ---p 00000000 00:00 0 
7f86546d9000-7f8654722000 rw-p 00000000 00:00 0                          [stack:12632]
 
7f8654722000-7f8654723000 ---p 00000000 00:00 0 
7f8654723000-7f865476c000 rw-p 00000000 00:00 0                          [stack:12597]
 
7f865476c000-7f865476d000 ---p 00000000 00:00 0 
7f865476d000-7f86547b6000 rw-p 00000000 00:00 0 
7f86547b6000-7f86547b7000 ---p 00000000 00:00 0 
7f86547b7000-7f8658800000 rw-p 00000000 00:00 0 
7f8658823000-7f8658824000 ---p 00000000 00:00 0 
7f8658824000-7f865886d000 rw-p 00000000 00:00 0                          [stack:11557]
 
7f865886d000-7f865886e000 ---p 00000000 00:00 0 
7f865886e000-7f86588b7000 rw-p 00000000 00:00 0                          [stack:12648]
 
7f86588b7000-7f86588b9000 r-xp 00000000 00:22 58871                      /usr/lib64/gconv/CP1252.so
 
7f86588b9000-7f8658ab8000 ---p 00002000 00:22 58871                      /usr/lib64/gconv/CP1252.so
 
7f8658ab8000-7f8658ab9000 r--p 00001000 00:22 58871                      /usr/lib64/gconv/CP1252.so
 
7f8658ab9000-7f8658aba000 rw-p 00002000 00:22 58871                      /usr/lib64/gconv/CP1252.so
 
7f8658aba000-7f865efe1000 r--p 00000000 00:22 59739                      /usr/lib/locale/locale-archive
 
7f865efe1000-7f865efe3000 r-xp 00000000 00:22 59103                      /usr/lib64/gconv/UTF-16.so
 
7f865efe3000-7f865f1e3000 ---p 00002000 00:22 59103                      /usr/lib64/gconv/UTF-16.so
 
7f865f1e3000-7f865f1e4000 r--p 00002000 00:22 59103                      /usr/lib64/gconv/UTF-16.so
 
7f865f1e4000-7f865f1e5000 rw-p 00003000 00:22 59103                      /usr/lib64/gconv/UTF-16.so
 
7f865f1e5000-7f865f1f5000 r-xp 00000000 00:22 100643                     /usr/lib64/libodbcinst.so.1.0.0
 
7f865f1f5000-7f865f3f4000 ---p 00010000 00:22 100643                     /usr/lib64/libodbcinst.so.1.0.0
 
7f865f3f4000-7f865f3f5000 r--p 0000f000 00:22 100643                     /usr/lib64/libodbcinst.so.1.0.0
 
7f865f3f5000-7f865f3f6000 rw-p 00010000 00:22 100643                     /usr/lib64/libodbcinst.so.1.0.0
 
7f865f3f6000-7f865f3f7000 ---p 00000000 00:00 0 
7f865f3f7000-7f865fbf7000 rw-p 00000000 00:00 0                          [stack:6637]
 
7f865fbf7000-7f865fbf8000 ---p 00000000 00:00 0 
7f865fbf8000-7f86603f8000 rw-p 00000000 00:00 0                          [stack:6636]
 
7f86603f8000-7f86603f9000 ---p 00000000 00:00 0 
7f86603f9000-7f8660bf9000 rw-p 00000000 00:00 0                          [stack:6635]
 
7f8660bf9000-7f8660bfa000 ---p 00000000 00:00 0 
7f8660bfa000-7f86613fa000 rw-p 00000000 00:00 0                          [stack:6634]
 
7f86613fa000-7f86613fb000 ---p 00000000 00:00 0 
7f86613fb000-7f8661bfb000 rw-p 00000000 00:00 0                          [stack:6633]
 
7f8661bfb000-7f8661bfc000 ---p 00000000 00:00 0 
7f8661bfc000-7f86623fc000 rw-p 00000000 00:00 0                          [stack:6632]
 
7f86623fc000-7f86623fd000 ---p 00000000 00:00 0 
7f86623fd000-7f8662bfd000 rw-p 00000000 00:00 0                          [stack:6631]
 
7f8662bfd000-7f8662bfe000 ---p 00000000 00:00 0 
7f8662bfe000-7f86633fe000 rw-p 00000000 00:00 0                          [stack:6630]
 
7f86633fe000-7f86633ff000 ---p 00000000 00:00 0 
7f86633ff000-7f8663bff000 rw-p 00000000 00:00 0                          [stack:6629]
 
7f8663bff000-7f8663c00000 ---p 00000000 00:00 0 
7f8663c00000-7f8667000000 rw-p 00000000 00:00 0                          [stack:6628]
 
7f866703e000-7f866703f000 ---p 00000000 00:00 0 
7f866703f000-7f8667088000 rw-p 00000000 00:00 0                          [stack:12645]
 
7f8667088000-7f8667089000 ---p 00000000 00:00 0 
7f8667089000-7f86670d2000 rw-p 00000000 00:00 0 
7f86670d2000-7f86670d3000 ---p 00000000 00:00 0 
7f86670d3000-7f866711c000 rw-p 00000000 00:00 0                          [stack:12598]
 
7f866711c000-7f866711d000 ---p 00000000 00:00 0 
7f866711d000-7f8667166000 rw-p 00000000 00:00 0                          [stack:8995]
 
7f8667166000-7f8667167000 ---p 00000000 00:00 0 
7f8667167000-7f86671b0000 rw-p 00000000 00:00 0                          [stack:12588]
 
7f86671b0000-7f86671b1000 ---p 00000000 00:00 0 
7f86671b1000-7f86671fa000 rw-p 00000000 00:00 0                          [stack:12631]
 
7f86671fa000-7f86671fe000 r-xp 00000000 00:22 59851                      /usr/lib64/libuuid.so.1.3.0
 
7f86671fe000-7f86673fd000 ---p 00004000 00:22 59851                      /usr/lib64/libuuid.so.1.3.0
 
7f86673fd000-7f86673fe000 r--p 00003000 00:22 59851                      /usr/lib64/libuuid.so.1.3.0
 
7f86673fe000-7f86673ff000 rw-p 00004000 00:22 59851                      /usr/lib64/libuuid.so.1.3.0
 
7f86673ff000-7f8667400000 ---p 00000000 00:00 0 
7f8667400000-7f8671800000 rw-p 00000000 00:00 0                          [stack:6627]
 
7f8671843000-7f86719d2000 r-xp 00000000 00:22 100684                     /opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0
 
7f86719d2000-7f8671bd1000 ---p 0018f000 00:22 100684                     /opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0
 
7f8671bd1000-7f8671bf0000 rw-p 0018e000 00:22 100684                     /opt/microsoft/msodbcsql/lib64/libmsodbcsql-11.0.so.2270.0
 
7f8671bf0000-7f8671bf6000 rw-p 00000000 00:00 0 
7f8671bf6000-7f8671bf7000 ---p 00000000 00:00 0 
7f8671bf7000-7f86723f7000 rw-p 00000000 00:00 0                          [stack:6624]
 
7f86723f7000-7f86723f8000 ---p 00000000 00:00 0 
7f86723f8000-7f8672bf8000 rw-p 00000000 00:00 0                          [stack:6623]
 
7f8672bf8000-7f8672bf9000 ---p 00000000 00:00 0 
7f8672bf9000-7f86733f9000 rw-p 00000000 00:00 0                          [stack:6622]
 
7f86733f9000-7f86733fa000 ---p 00000000 00:00 0 
7f86733fa000-7f8673bfa000 rw-p 00000000 00:00 0                          [stack:6621]
 
7f8673bfa000-7f8673bfb000 ---p 00000000 00:00 0 
7f8673bfb000-7f86743fb000 rw-p 00000000 00:00 0                          [stack:6620]
 
7f86743fb000-7f86743fc000 ---p 00000000 00:00 0 
7f86743fc000-7f8674bfc000 rw-p 00000000 00:00 0                          [stack:6619]
 
7f8674bfc000-7f8674bfd000 ---p 00000000 00:00 0 
7f8674bfd000-7f86753fd000 rw-p 00000000 00:00 0                          [stack:6618]
 
7f86753fd000-7f86753fe000 ---p 00000000 00:00 0 
7f86753fe000-7f8675bfe000 rw-p 00000000 00:00 0                          [stack:6617]
 
7f8675bfe000-7f8675bff000 ---p 00000000 00:00 0 
7f8675bff000-7f86763ff000 rw-p 00000000 00:00 0                          [stack:6616]
 
7f86763ff000-7f8676400000 ---p 00000000 00:00 0 
7f8676400000-7f8683800000 rw-p 00000000 00:00 0                          [stack:6615]
 
7f868381d000-7f868381f000 r-xp 00000000 00:22 59052                      /usr/lib64/gconv/ISO8859-1.so
 
7f868381f000-7f8683a1e000 ---p 00002000 00:22 59052                      /usr/lib64/gconv/ISO8859-1.so
 
7f8683a1e000-7f8683a1f000 r--p 00001000 00:22 59052                      /usr/lib64/gconv/ISO8859-1.so
 
7f8683a1f000-7f8683a20000 rw-p 00002000 00:22 59052                      /usr/lib64/gconv/ISO8859-1.so
 
7f8683a20000-7f86c7000000 rw-p 00000000 00:00 0 
7f86c7040000-7f874d800000 rw-p 00000000 00:00 0 
7f874d81a000-7f874d81f000 r-xp 00000000 00:22 58836                      /usr/lib64/libnss_dns-2.17.so
 
7f874d81f000-7f874da1e000 ---p 00005000 00:22 58836                      /usr/lib64/libnss_dns-2.17.so
 
7f874da1e000-7f874da1f000 r--p 00004000 00:22 58836                      /usr/lib64/libnss_dns-2.17.so
 
7f874da1f000-7f874da20000 rw-p 00005000 00:22 58836                      /usr/lib64/libnss_dns-2.17.so
 
7f874da20000-7f8791000000 rw-p 00000000 00:00 0 
7f8791040000-7f8817800000 rw-p 00000000 00:00 0 
7f8817840000-7f889e000000 rw-p 00000000 00:00 0 
7f889e030000-7f889e031000 ---p 00000000 00:00 0 
7f889e031000-7f889e07a000 rw-p 00000000 00:00 0 
7f889e07a000-7f889e07b000 ---p 00000000 00:00 0 
7f889e07b000-7f889e0c4000 rw-p 00000000 00:00 0 
7f889e0c4000-7f889e0c5000 ---p 00000000 00:00 0 
7f889e0c5000-7f889e10e000 rw-p 00000000 00:00 0                          [stack:12629]
 
7f889e10e000-7f889e10f000 ---p 00000000 00:00 0 
7f889e10f000-7f889e158000 rw-p 00000000 00:00 0                          [stack:12633]
 
7f889e158000-7f889e159000 ---p 00000000 00:00 0 
7f889e159000-7f889e1a2000 rw-p 00000000 00:00 0                          [stack:7825]
 
7f889e1a2000-7f889e1a3000 ---p 00000000 00:00 0 
7f889e1a3000-7f889e1ec000 rw-p 00000000 00:00 0                          [stack:6651]
 
7f889e1ec000-7f889e1f8000 r-xp 00000000 00:22 58838                      /usr/lib64/libnss_files-2.17.so
 
7f889e1f8000-7f889e3f7000 ---p 0000c000 00:22 58838                      /usr/lib64/libnss_files-2.17.so
 
7f889e3f7000-7f889e3f8000 r--p 0000b000 00:22 58838                      /usr/lib64/libnss_files-2.17.so
 
7f889e3f8000-7f889e3f9000 rw-p 0000c000 00:22 58838                      /usr/lib64/libnss_files-2.17.so
 
7f889e3f9000-7f889e3ff000 rw-p 00000000 00:00 0 
7f889e3ff000-7f889e400000 ---p 00000000 00:00 0 
7f889e400000-7f88a7800000 rw-p 00000000 00:00 0                          [stack:6614]
 
7f88a7809000-7f88a780a000 ---p 00000000 00:00 0 
7f88a780a000-7f88a7853000 rw-p 00000000 00:00 0                          [stack:6650]
 
7f88a7853000-7f88a786e000 r-xp 00000000 00:22 6683                       /usr/lib64/libaudit.so.1.0.0
 
7f88a786e000-7f88a7a6e000 ---p 0001b000 00:22 6683                       /usr/lib64/libaudit.so.1.0.0
 
7f88a7a6e000-7f88a7a6f000 r--p 0001b000 00:22 6683                       /usr/lib64/libaudit.so.1.0.0
 
7f88a7a6f000-7f88a7a70000 rw-p 0001c000 00:22 6683                       /usr/lib64/libaudit.so.1.0.0
 
7f88a7a70000-7f88a7a7a000 rw-p 00000000 00:00 0 
7f88a7a7a000-7f88a7a87000 r-xp 00000000 00:22 20276                      /usr/lib64/libpam.so.0.83.1
 
7f88a7a87000-7f88a7c87000 ---p 0000d000 00:22 20276                      /usr/lib64/libpam.so.0.83.1
 
7f88a7c87000-7f88a7c88000 r--p 0000d000 00:22 20276                      /usr/lib64/libpam.so.0.83.1
 
7f88a7c88000-7f88a7c89000 rw-p 0000e000 00:22 20276                      /usr/lib64/libpam.so.0.83.1
 
7f88a7c89000-7f88a7c8b000 r-xp 00000000 00:22 79365                      /usr/lib64/mysql/plugin/auth_pam.so
 
7f88a7c8b000-7f88a7e8a000 ---p 00002000 00:22 79365                      /usr/lib64/mysql/plugin/auth_pam.so
 
7f88a7e8a000-7f88a7e8b000 r--p 00001000 00:22 79365                      /usr/lib64/mysql/plugin/auth_pam.so
 
7f88a7e8b000-7f88a7e8c000 rw-p 00002000 00:22 79365                      /usr/lib64/mysql/plugin/auth_pam.so
 
7f88a7e8c000-7f88a7e95000 r-xp 00000000 00:22 81097                      /usr/lib64/libltdl.so.7.3.0
 
7f88a7e95000-7f88a8094000 ---p 00009000 00:22 81097                      /usr/lib64/libltdl.so.7.3.0
 
7f88a8094000-7f88a8095000 r--p 00008000 00:22 81097                      /usr/lib64/libltdl.so.7.3.0
 
7f88a8095000-7f88a8096000 rw-p 00009000 00:22 81097                      /usr/lib64/libltdl.so.7.3.0
 
7f88a8096000-7f88a81f5000 r-xp 00000000 00:22 59858                      /usr/lib64/libxml2.so.2.9.1
 
7f88a81f5000-7f88a83f4000 ---p 0015f000 00:22 59858                      /usr/lib64/libxml2.so.2.9.1
 
7f88a83f4000-7f88a83fc000 r--p 0015e000 00:22 59858                      /usr/lib64/libxml2.so.2.9.1
 
7f88a83fc000-7f88a83fe000 rw-p 00166000 00:22 59858                      /usr/lib64/libxml2.so.2.9.1
 
7f88a83fe000-7f88b0c00000 rw-p 00000000 00:00 0 
7f88b0c05000-7f88b0c06000 ---p 00000000 00:00 0 
7f88b0c06000-7f88b0c4f000 rw-p 00000000 00:00 0                          [stack:6673]
 
7f88b0c4f000-7f88b0c50000 ---p 00000000 00:00 0 
7f88b0c50000-7f88b0c99000 rw-p 00000000 00:00 0                          [stack:12600]
 
7f88b0c99000-7f88b0deb000 r-xp 00000000 00:22 87398                      /usr/lib64/mysql/plugin/ha_connect.so
 
7f88b0deb000-7f88b0fea000 ---p 00152000 00:22 87398                      /usr/lib64/mysql/plugin/ha_connect.so
 
7f88b0fea000-7f88b0ffb000 r--p 00151000 00:22 87398                      /usr/lib64/mysql/plugin/ha_connect.so
 
7f88b0ffb000-7f88b0ffd000 rw-p 00162000 00:22 87398                      /usr/lib64/mysql/plugin/ha_connect.so
 
7f88b0ffd000-7f88b0fff000 rw-p 00000000 00:00 0 
7f88b0fff000-7f88b1000000 ---p 00000000 00:00 0 
7f88b1000000-7f88b2000000 rw-p 00000000 00:00 0                          [stack:6613]
 
7f88b2049000-7f88b204a000 ---p 00000000 00:00 0 
7f88b204a000-7f88b2093000 rw-p 00000000 00:00 0                          [stack:12647]
 
7f88b2093000-7f88b20f3000 r-xp 00000000 00:22 101016                     /usr/lib64/libodbc.so.2.0.0
 
7f88b20f3000-7f88b22f2000 ---p 00060000 00:22 101016                     /usr/lib64/libodbc.so.2.0.0
 
7f88b22f2000-7f88b22f3000 r--p 0005f000 00:22 101016                     /usr/lib64/libodbc.so.2.0.0
 
7f88b22f3000-7f88b22fa000 rw-p 00060000 00:22 101016                     /usr/lib64/libodbc.so.2.0.0
 
7f88b22fa000-7f88b22fb000 rw-p 00000000 00:00 0 
7f88b22fb000-7f88b235b000 r-xp 00000000 00:22 60027                      /usr/lib64/libpcre.so.1.2.0
 
7f88b235b000-7f88b255a000 ---p 00060000 00:22 60027                      /usr/lib64/libpcre.so.1.2.0
 
7f88b255a000-7f88b255b000 r--p 0005f000 00:22 60027                      /usr/lib64/libpcre.so.1.2.0
 
7f88b255b000-7f88b255c000 rw-p 00060000 00:22 60027                      /usr/lib64/libpcre.so.1.2.0
 
7f88b255c000-7f88b257d000 r-xp 00000000 00:22 6498                       /usr/lib64/libselinux.so.1
 
7f88b257d000-7f88b277d000 ---p 00021000 00:22 6498                       /usr/lib64/libselinux.so.1
 
7f88b277d000-7f88b277e000 r--p 00021000 00:22 6498                       /usr/lib64/libselinux.so.1
 
7f88b277e000-7f88b277f000 rw-p 00022000 00:22 6498                       /usr/lib64/libselinux.so.1
 
7f88b277f000-7f88b2781000 rw-p 00000000 00:00 0 
7f88b2781000-7f88b2790000 r-xp 00000000 00:22 6809                       /usr/lib64/libbz2.so.1.0.6
 
7f88b2790000-7f88b298f000 ---p 0000f000 00:22 6809                       /usr/lib64/libbz2.so.1.0.6
 
7f88b298f000-7f88b2990000 r--p 0000e000 00:22 6809                       /usr/lib64/libbz2.so.1.0.6
 
7f88b2990000-7f88b2991000 rw-p 0000f000 00:22 6809                       /usr/lib64/libbz2.so.1.0.6
 
7f88b2991000-7f88b29a6000 r-xp 00000000 00:22 6824                       /usr/lib64/libelf-0.163.so
 
7f88b29a6000-7f88b2ba5000 ---p 00015000 00:22 6824                       /usr/lib64/libelf-0.163.so
 
7f88b2ba5000-7f88b2ba6000 r--p 00014000 00:22 6824                       /usr/lib64/libelf-0.163.so
 
7f88b2ba6000-7f88b2ba7000 rw-p 00015000 00:22 6824                       /usr/lib64/libelf-0.163.so
 
7f88b2ba7000-7f88b2bab000 r-xp 00000000 00:22 7237                       /usr/lib64/libattr.so.1.1.0
 
7f88b2bab000-7f88b2daa000 ---p 00004000 00:22 7237                       /usr/lib64/libattr.so.1.1.0
 
7f88b2daa000-7f88b2dab000 r--p 00003000 00:22 7237                       /usr/lib64/libattr.so.1.1.0
 
7f88b2dab000-7f88b2dac000 rw-p 00004000 00:22 7237                       /usr/lib64/libattr.so.1.1.0
 
7f88b2dac000-7f88b2dc2000 r-xp 00000000 00:22 58848                      /usr/lib64/libresolv-2.17.so
 
7f88b2dc2000-7f88b2fc2000 ---p 00016000 00:22 58848                      /usr/lib64/libresolv-2.17.so
 
7f88b2fc2000-7f88b2fc3000 r--p 00016000 00:22 58848                      /usr/lib64/libresolv-2.17.so
 
7f88b2fc3000-7f88b2fc4000 rw-p 00017000 00:22 58848                      /usr/lib64/libresolv-2.17.so
 
7f88b2fc4000-7f88b2fc6000 rw-p 00000000 00:00 0 
7f88b2fc6000-7f88b2fc9000 r-xp 00000000 00:22 11743                      /usr/lib64/libkeyutils.so.1.5
 
7f88b2fc9000-7f88b31c8000 ---p 00003000 00:22 11743                      /usr/lib64/libkeyutils.so.1.5
 
7f88b31c8000-7f88b31c9000 r--p 00002000 00:22 11743                      /usr/lib64/libkeyutils.so.1.5
 
7f88b31c9000-7f88b31ca000 rw-p 00003000 00:22 11743                      /usr/lib64/libkeyutils.so.1.5
 
7f88b31ca000-7f88b31d7000 r-xp 00000000 00:22 60524                      /usr/lib64/libkrb5support.so.0.1
 
7f88b31d7000-7f88b33d7000 ---p 0000d000 00:22 60524                      /usr/lib64/libkrb5support.so.0.1
 
7f88b33d7000-7f88b33d8000 r--p 0000d000 00:22 60524                      /usr/lib64/libkrb5support.so.0.1
 
7f88b33d8000-7f88b33d9000 rw-p 0000e000 00:22 60524                      /usr/lib64/libkrb5support.so.0.1
 
7f88b33d9000-7f88b33ee000 r-xp 00000000 00:22 334                        /usr/lib64/libgcc_s-4.8.5-20150702.so.1
 
7f88b33ee000-7f88b35ed000 ---p 00015000 00:22 334                        /usr/lib64/libgcc_s-4.8.5-20150702.so.1
 
7f88b35ed000-7f88b35ee000 r--p 00014000 00:22 334                        /usr/lib64/libgcc_s-4.8.5-20150702.so.1
 
7f88b35ee000-7f88b35ef000 rw-p 00015000 00:22 334                        /usr/lib64/libgcc_s-4.8.5-20150702.so.1
 
7f88b35ef000-7f88b3634000 r-xp 00000000 00:22 7174                       /usr/lib64/libdw-0.163.so
 
7f88b3634000-7f88b3833000 ---p 00045000 00:22 7174                       /usr/lib64/libdw-0.163.so
 
7f88b3833000-7f88b3835000 r--p 00044000 00:22 7174                       /usr/lib64/libdw-0.163.so
 
7f88b3835000-7f88b3836000 rw-p 00046000 00:22 7174                       /usr/lib64/libdw-0.163.so
 
7f88b3836000-7f88b383a000 r-xp 00000000 00:22 7242                       /usr/lib64/libcap.so.2.22
 
7f88b383a000-7f88b3a39000 ---p 00004000 00:22 7242                       /usr/lib64/libcap.so.2.22
 
7f88b3a39000-7f88b3a3a000 r--p 00003000 00:22 7242                       /usr/lib64/libcap.so.2.22
 
7f88b3a3a000-7f88b3a3b000 rw-p 00004000 00:22 7242                       /usr/lib64/libcap.so.2.22
 
7f88b3a3b000-7f88b3a42000 r-xp 00000000 00:22 58850                      /usr/lib64/librt-2.17.so
 
7f88b3a42000-7f88b3c41000 ---p 00007000 00:22 58850                      /usr/lib64/librt-2.17.so
 
7f88b3c41000-7f88b3c42000 r--p 00006000 00:22 58850                      /usr/lib64/librt-2.17.so
 
7f88b3c42000-7f88b3c43000 rw-p 00007000 00:22 58850                      /usr/lib64/librt-2.17.so
 
7f88b3c43000-7f88b3c72000 r-xp 00000000 00:22 60512                      /usr/lib64/libk5crypto.so.3.1
 
7f88b3c72000-7f88b3e71000 ---p 0002f000 00:22 60512                      /usr/lib64/libk5crypto.so.3.1
 
7f88b3e71000-7f88b3e73000 r--p 0002e000 00:22 60512                      /usr/lib64/libk5crypto.so.3.1
 
7f88b3e73000-7f88b3e74000 rw-p 00030000 00:22 60512                      /usr/lib64/libk5crypto.so.3.1
 
7f88b3e74000-7f88b3e75000 rw-p 00000000 00:00 0 
7f88b3e75000-7f88b3e78000 r-xp 00000000 00:22 6676                       /usr/lib64/libcom_err.so.2.1
 
7f88b3e78000-7f88b4077000 ---p 00003000 00:22 6676                       /usr/lib64/libcom_err.so.2.1
 
7f88b4077000-7f88b4078000 r--p 00002000 00:22 6676                       /usr/lib64/libcom_err.so.2.1
 
7f88b4078000-7f88b4079000 rw-p 00003000 00:22 6676                       /usr/lib64/libcom_err.so.2.1
 
7f88b4079000-7f88b414e000 r-xp 00000000 00:22 60522                      /usr/lib64/libkrb5.so.3.3
 
7f88b414e000-7f88b434e000 ---p 000d5000 00:22 60522                      /usr/lib64/libkrb5.so.3.3
 
7f88b434e000-7f88b435b000 r--p 000d5000 00:22 60522                      /usr/lib64/libkrb5.so.3.3
 
7f88b435b000-7f88b435e000 rw-p 000e2000 00:22 60522                      /usr/lib64/libkrb5.so.3.3
 
7f88b435e000-7f88b43a7000 r-xp 00000000 00:22 60508                      /usr/lib64/libgssapi_krb5.so.2.2
 
7f88b43a7000-7f88b45a7000 ---p 00049000 00:22 60508                      /usr/lib64/libgssapi_krb5.so.2.2
 
7f88b45a7000-7f88b45a8000 r--p 00049000 00:22 60508                      /usr/lib64/libgssapi_krb5.so.2.2
 
7f88b45a8000-7f88b45aa000 rw-p 0004a000 00:22 60508                      /usr/lib64/libgssapi_krb5.so.2.2
 
7f88b45aa000-7f88b45ac000 r-xp 00000000 00:22 58808                      /usr/lib64/libfreebl3.so
 
7f88b45ac000-7f88b47ab000 ---p 00002000 00:22 58808                      /usr/lib64/libfreebl3.so
 
7f88b47ab000-7f88b47ac000 r--p 00001000 00:22 58808                      /usr/lib64/libfreebl3.so
 
7f88b47ac000-7f88b47ad000 rw-p 00002000 00:22 58808                      /usr/lib64/libfreebl3.so
 
7f88b47ad000-7f88b4964000 r-xp 00000000 00:22 58820                      /usr/lib64/libc-2.17.so
 
7f88b4964000-7f88b4b64000 ---p 001b7000 00:22 58820                      /usr/lib64/libc-2.17.so
 
7f88b4b64000-7f88b4b68000 r--p 001b7000 00:22 58820                      /usr/lib64/libc-2.17.so
 
7f88b4b68000-7f88b4b6a000 rw-p 001bb000 00:22 58820                      /usr/lib64/libc-2.17.so
 
7f88b4b6a000-7f88b4b6f000 rw-p 00000000 00:00 0 
7f88b4b6f000-7f88b4c70000 r-xp 00000000 00:22 58828                      /usr/lib64/libm-2.17.so
 
7f88b4c70000-7f88b4e6f000 ---p 00101000 00:22 58828                      /usr/lib64/libm-2.17.so
 
7f88b4e6f000-7f88b4e70000 r--p 00100000 00:22 58828                      /usr/lib64/libm-2.17.so
 
7f88b4e70000-7f88b4e71000 rw-p 00101000 00:22 58828                      /usr/lib64/libm-2.17.so
 
7f88b4e71000-7f88b4f5a000 r-xp 00000000 00:22 6309                       /usr/lib64/libstdc++.so.6.0.19
 
7f88b4f5a000-7f88b515a000 ---p 000e9000 00:22 6309                       /usr/lib64/libstdc++.so.6.0.19
 
7f88b515a000-7f88b5162000 r--p 000e9000 00:22 6309                       /usr/lib64/libstdc++.so.6.0.19
 
7f88b5162000-7f88b5164000 rw-p 000f1000 00:22 6309                       /usr/lib64/libstdc++.so.6.0.19
 
7f88b5164000-7f88b5179000 rw-p 00000000 00:00 0 
7f88b5179000-7f88b517c000 r-xp 00000000 00:22 58826                      /usr/lib64/libdl-2.17.so
 
7f88b517c000-7f88b537b000 ---p 00003000 00:22 58826                      /usr/lib64/libdl-2.17.so
 
7f88b537b000-7f88b537c000 r--p 00002000 00:22 58826                      /usr/lib64/libdl-2.17.so
 
7f88b537c000-7f88b537d000 rw-p 00003000 00:22 58826                      /usr/lib64/libdl-2.17.so
 
7f88b537d000-7f88b553b000 r-xp 00000000 00:22 60544                      /usr/lib64/libcrypto.so.1.0.1e
 
7f88b553b000-7f88b573b000 ---p 001be000 00:22 60544                      /usr/lib64/libcrypto.so.1.0.1e
 
7f88b573b000-7f88b5755000 r--p 001be000 00:22 60544                      /usr/lib64/libcrypto.so.1.0.1e
 
7f88b5755000-7f88b5761000 rw-p 001d8000 00:22 60544                      /usr/lib64/libcrypto.so.1.0.1e
 
7f88b5761000-7f88b5765000 rw-p 00000000 00:00 0 
7f88b5765000-7f88b57c8000 r-xp 00000000 00:22 60546                      /usr/lib64/libssl.so.1.0.1e
 
7f88b57c8000-7f88b59c7000 ---p 00063000 00:22 60546                      /usr/lib64/libssl.so.1.0.1e
 
7f88b59c7000-7f88b59cb000 r--p 00062000 00:22 60546                      /usr/lib64/libssl.so.1.0.1e
 
7f88b59cb000-7f88b59d2000 rw-p 00066000 00:22 60546                      /usr/lib64/libssl.so.1.0.1e
 
7f88b59d2000-7f88b59da000 r-xp 00000000 00:22 58824                      /usr/lib64/libcrypt-2.17.so
 
7f88b59da000-7f88b5bd9000 ---p 00008000 00:22 58824                      /usr/lib64/libcrypt-2.17.so
 
7f88b5bd9000-7f88b5bda000 r--p 00007000 00:22 58824                      /usr/lib64/libcrypt-2.17.so
 
7f88b5bda000-7f88b5bdb000 rw-p 00008000 00:22 58824                      /usr/lib64/libcrypt-2.17.so
 
7f88b5bdb000-7f88b5c09000 rw-p 00000000 00:00 0 
7f88b5c09000-7f88b5c3a000 r-xp 00000000 00:22 79125                      /usr/lib64/libjemalloc.so.1
 
7f88b5c3a000-7f88b5e39000 ---p 00031000 00:22 79125                      /usr/lib64/libjemalloc.so.1
 
7f88b5e39000-7f88b5e3b000 r--p 00030000 00:22 79125                      /usr/lib64/libjemalloc.so.1
 
7f88b5e3b000-7f88b5e3c000 rw-p 00032000 00:22 79125                      /usr/lib64/libjemalloc.so.1
 
7f88b5e3c000-7f88b5e3d000 rw-p 00000000 00:00 0 
7f88b5e3d000-7f88b5e52000 r-xp 00000000 00:22 6503                       /usr/lib64/libz.so.1.2.7
 
7f88b5e52000-7f88b6051000 ---p 00015000 00:22 6503                       /usr/lib64/libz.so.1.2.7
 
7f88b6051000-7f88b6052000 r--p 00014000 00:22 6503                       /usr/lib64/libz.so.1.2.7
 
7f88b6052000-7f88b6053000 rw-p 00015000 00:22 6503                       /usr/lib64/libz.so.1.2.7
 
7f88b6053000-7f88b6054000 r-xp 00000000 00:22 11721                      /usr/lib64/libaio.so.1.0.1
 
7f88b6054000-7f88b6253000 ---p 00001000 00:22 11721                      /usr/lib64/libaio.so.1.0.1
 
7f88b6253000-7f88b6254000 r--p 00000000 00:22 11721                      /usr/lib64/libaio.so.1.0.1
 
7f88b6254000-7f88b6255000 rw-p 00001000 00:22 11721                      /usr/lib64/libaio.so.1.0.1
 
7f88b6255000-7f88b6279000 r-xp 00000000 00:22 6465                       /usr/lib64/liblzma.so.5.0.99
 
7f88b6279000-7f88b6478000 ---p 00024000 00:22 6465                       /usr/lib64/liblzma.so.5.0.99
 
7f88b6478000-7f88b6479000 r--p 00023000 00:22 6465                       /usr/lib64/liblzma.so.5.0.99
 
7f88b6479000-7f88b647a000 rw-p 00024000 00:22 6465                       /usr/lib64/liblzma.so.5.0.99
 
7f88b647a000-7f88b6490000 r-xp 00000000 00:22 58846                      /usr/lib64/libpthread-2.17.so
 
7f88b6490000-7f88b6690000 ---p 00016000 00:22 58846                      /usr/lib64/libpthread-2.17.so
 
7f88b6690000-7f88b6691000 r--p 00016000 00:22 58846                      /usr/lib64/libpthread-2.17.so
 
7f88b6691000-7f88b6692000 rw-p 00017000 00:22 58846                      /usr/lib64/libpthread-2.17.so
 
7f88b6692000-7f88b6696000 rw-p 00000000 00:00 0 
7f88b6696000-7f88b66b7000 r-xp 00000000 00:22 58813                      /usr/lib64/ld-2.17.so
 
7f88b66ba000-7f88b66bb000 rw-p 00000000 00:00 0 
7f88b66bb000-7f88b66c2000 r--s 00000000 00:22 59134                      /usr/lib64/gconv/gconv-modules.cache
 
7f88b66c2000-7f88b66c3000 ---p 00000000 00:00 0 
7f88b66c3000-7f88b670c000 rw-p 00000000 00:00 0                          [stack:6672]
 
7f88b670c000-7f88b670d000 ---p 00000000 00:00 0 
7f88b670d000-7f88b6756000 rw-p 00000000 00:00 0                          [stack:9081]
 
7f88b6756000-7f88b6757000 ---p 00000000 00:00 0 
7f88b6757000-7f88b67a0000 rw-p 00000000 00:00 0 
7f88b67a0000-7f88b67a1000 ---p 00000000 00:00 0 
7f88b67a1000-7f88b67ea000 rw-p 00000000 00:00 0                          [stack:12599]
 
7f88b67ea000-7f88b67eb000 ---p 00000000 00:00 0 
7f88b67eb000-7f88b6834000 rw-p 00000000 00:00 0                          [stack:6639]
 
7f88b6834000-7f88b6835000 ---p 00000000 00:00 0 
7f88b6835000-7f88b687e000 rw-p 00000000 00:00 0                          [stack:6638]
 
7f88b687e000-7f88b687f000 rw-s 00000000 00:0a 62127                      /[aio] (deleted)
 
7f88b687f000-7f88b6882000 rw-s 00000000 00:0a 62126                      /[aio] (deleted)
 
7f88b6882000-7f88b6885000 rw-s 00000000 00:0a 62125                      /[aio] (deleted)
 
7f88b6885000-7f88b6888000 rw-s 00000000 00:0a 62124                      /[aio] (deleted)
 
7f88b6888000-7f88b688b000 rw-s 00000000 00:0a 62123                      /[aio] (deleted)
 
7f88b688b000-7f88b688e000 rw-s 00000000 00:0a 62122                      /[aio] (deleted)
 
7f88b688e000-7f88b6891000 rw-s 00000000 00:0a 62121                      /[aio] (deleted)
 
7f88b6891000-7f88b6894000 rw-s 00000000 00:0a 62120                      /[aio] (deleted)
 
7f88b6894000-7f88b68a2000 rw-p 00000000 00:00 0 
7f88b68a2000-7f88b68a6000 r-xp 00000000 00:22 59743                      /usr/lib64/libsystemd-daemon.so.0.0.12
 
7f88b68a6000-7f88b68a7000 ---p 00004000 00:22 59743                      /usr/lib64/libsystemd-daemon.so.0.0.12
 
7f88b68a7000-7f88b68a8000 r--p 00004000 00:22 59743                      /usr/lib64/libsystemd-daemon.so.0.0.12
 
7f88b68a8000-7f88b68a9000 rw-p 00005000 00:22 59743                      /usr/lib64/libsystemd-daemon.so.0.0.12
 
7f88b68a9000-7f88b68ac000 rw-p 00000000 00:00 0 
7f88b68ac000-7f88b68af000 rw-s 00000000 00:0a 62119                      /[aio] (deleted)
 
7f88b68af000-7f88b68b2000 rw-s 00000000 00:0a 62118                      /[aio] (deleted)
 
7f88b68b2000-7f88b68b5000 rw-s 00000000 00:0a 62117                      /[aio] (deleted)
 
7f88b68b5000-7f88b68b6000 rw-s 00000000 00:0a 62116                      /[aio] (deleted)
 
7f88b68b6000-7f88b68b7000 rw-p 00000000 00:00 0 
7f88b68b7000-7f88b68b8000 r--p 00021000 00:22 58813                      /usr/lib64/ld-2.17.so
 
7f88b68b8000-7f88b68b9000 rw-p 00022000 00:22 58813                      /usr/lib64/ld-2.17.so
 
7f88b68b9000-7f88b68ba000 rw-p 00000000 00:00 0 
7f88b68ba000-7f88b7830000 r-xp 00000000 00:22 79388                      /usr/sbin/mysqld
 
7f88b7a30000-7f88b7ae0000 r--p 00f76000 00:22 79388                      /usr/sbin/mysqld
 
7f88b7ae0000-7f88b7b91000 rw-p 01026000 00:22 79388                      /usr/sbin/mysqld
 
7f88b7b91000-7f88b8407000 rw-p 00000000 00:00 0 
7ffd259f6000-7ffd25a17000 rw-p 00000000 00:00 0                          [stack]
 
7ffd25b12000-7ffd25b14000 r-xp 00000000 00:00 0                          [vdso]
 
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
 
Fatal signal 6 while backtracing
 
2016-08-23 15:15:18 139918780422272 [Note] CONNECT: Version 1.04.0006 May 08, 2016



 Comments   
Comment by Olivier Bertrand [ 2016-08-29 ]

Please provide the scenario of what caused the problem so I can try to reproduce it.

Comment by Chris Calender (Inactive) [ 2017-01-17 ]

Sorry for the delay in my reply on this one.

We did not ever encounter this error again after upgrading to 10.1.17, so please feel free to close this bug.

Comment by Sergei Golubchik [ 2017-01-18 ]

No feedback for 5 months, closing.

ccalender, please, feel free to reopen it, if you have more info to provide.

Comment by Chris Calender (Inactive) [ 2017-04-19 ]

Re-opening this bug due to a new issue affected by it.

Comment by Marko Mäkelä [ 2017-04-19 ]

Reopened on the request of kjoiner.

Comment by Olivier Bertrand [ 2017-04-19 ]

I cannot do much about this until you provide detailed info about what sequence of actions provoqued it. The error trace is not enough, especially when not issued from a DEBUG version.

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