insert into on duplicate crash

Bug #79243
https://bugs.mysql.com/bug.php?id=79243

percona
https://jira.percona.com/browse/PS-1085

set print element 0
set print pretty
f 12
p thd->m_query_string

08:37:48 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.
Attempting to collect some information that could help diagnose the problem.
As this is a crash and something is definitely wrong, the information
collection process might fail.
Please help us make Percona Server better by reporting any
bugs at http://bugs.percona.com/

key_buffer_size=8388608
read_buffer_size=1048576
max_used_connections=97
max_threads=100001
thread_count=29
connection_count=29
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1740864518 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f6d07d84000
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 = 7f71d5563be8 thread_stack 0x80000
/usr/local/mysql/bin/mysqld(my_print_stacktrace+0x2c)[0xed36bc]
/usr/local/mysql/bin/mysqld(handle_fatal_signal+0x461)[0x7a26e1]
/lib64/libpthread.so.0[0x369ea0f7e0]
/usr/local/mysql/bin/mysqld(_ZN10Field_blob15copy_blob_valueEP11st_mem_root+0x28)[0x7e6298]
/usr/local/mysql/bin/mysqld(_Z25mysql_prepare_blob_valuesP3THDR4ListI4ItemEP11st_mem_root+0x2b8)[0xe1c748]
/usr/local/mysql/bin/mysqld(_Z12write_recordP3THDP5TABLEP9COPY_INFOS4_+0x9c0)[0xe1d450]
/usr/local/mysql/bin/mysqld(_ZN14Sql_cmd_insert12mysql_insertEP3THDP10TABLE_LIST+0x825)[0xe1dec5]
/usr/local/mysql/bin/mysqld(_ZN14Sql_cmd_insert7executeEP3THD+0xc2)[0xe1e702]
/usr/local/mysql/bin/mysqld(_Z21mysql_execute_commandP3THDb+0x18d7)[0xcad217]
/usr/local/mysql/bin/mysqld(_Z11mysql_parseP3THDP12Parser_state+0x5d5)[0xcb3385]
/usr/local/mysql/bin/mysqld(_Z16dispatch_commandP3THDPK8COM_DATA19enum_server_command+0xaba)[0xcb3eca]
/usr/local/mysql/bin/mysqld(_Z10do_commandP3THD+0x1b7)[0xcb5917]
/usr/local/mysql/bin/mysqld(_Z26threadpool_process_requestP3THD+0xc7)[0xd5a267]
/usr/local/mysql/bin/mysqld[0xd6979e]
/usr/local/mysql/bin/mysqld(pfs_spawn_thread+0x1b4)[0x123cf24]
/lib64/libpthread.so.0[0x369ea07aa1]
/lib64/libc.so.6(clone+0x6d)[0x369e2e893d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7f6d08365030): is an invalid pointer
Connection ID (thread ID): 85402724
Status: NOT_KILLED

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