After a while when replication ahs been running, the slave server segfaults and restarts, here's the full stacktrace:
#0 0x000000000086eb32 in unpack_row (rli=<optimized out>, table=0x7ffb6d9e6400, colcnt=<optimized out>, row_data=0x7ffb6d9a5e90 "", cols=0x7ffb6d9b7a98, current_row_end=0x7ffb6d9b7bb0, master_reclength=0x7ffb6d9b7b58, row_end=0x7ffb6d9a69d0 "\360\037")
at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/rpl_record.cc:265
conv_field = <optimized out>
f = <optimized out>
master_null_byte_count = <optimized out>
pack_ptr = 0x7ffb6d9a5e92 "\t00209-85A\200"
tabledef = <optimized out>
conv_table = <optimized out>
end_ptr = <optimized out>
null_mask = <optimized out>
null_bits = <optimized out>
null_ptr = <optimized out>
begin_ptr = 0x7ffb6d9e7a50
field_ptr = 0x7ffb6d9e7a50
i = <optimized out>
max_cols = <optimized out>
#1 0x0000000000853324 in unpack_current_row (cols=0x7ffb6d9b7a98, rli=0x1c724d60, this=0x7ffb6d9b7940) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/log_event.h:4301
No locals.
#2 Write_rows_log_event::write_row (this=this@entry=0x7ffb6d9b7940, rli=0x1c724d60, overwrite=false) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/log_event.cc:12752
table = 0x7ffb6d9e6400
error = <optimized out>
keynum = 0
key = {m_ptr = 0x0}
#3 0x00000000008536b2 in Write_rows_log_event::do_exec_row (this=0x7ffb6d9b7940, rli=<optimized out>) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/log_event.cc:12970
error = <optimized out>
#4 0x00000000008431ef in Rows_log_event::do_apply_row (this=this@entry=0x7ffb6d9b7940, rli=rli@entry=0x1c724d60) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/log_event.cc:10309
error = 0
old_thd = 0x1c755980
#5 0x000000000085188f in Rows_log_event::do_apply_event (this=0x7ffb6d9b7940, rli=0x1c724d60) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/log_event.cc:11422
after_image = <optimized out>
saved_sql_mode = 1073741824
saved_m_curr_row = 0x7ffb6d9a49f0 ""
do_apply_row_ptr = (int (Rows_log_event::*)(Rows_log_event * const, const Relay_log_info *)) 0x8431c0 <Rows_log_event::do_apply_row(Relay_log_info const*)>
error = 0
table = 0x7ffb6d9e6400
#6 0x000000000084abf7 in Log_event::apply_event (this=0x7ffb6d9b7940, rli=0x1c724d60) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/log_event.cc:3030
skip = false
parallel = <optimized out>
actual_exec_mode = <optimized out>
thd = 0x1c755980
#7 0x000000000087dc53 in apply_event_and_update_pos (ptr_ev=ptr_ev@entry=0x7ffb831299c0, thd=thd@entry=0x1c755980, rli=rli@entry=0x1c724d60)
at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/rpl_slave.cc:3549
exec_res = 0
skip_event = false
ev = 0x7ffb6d9b7940
reason = <optimized out>
#8 0x0000000000880330 in exec_relay_log_event (rli=0x1c724d60, thd=0x1c755980) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/rpl_slave.cc:4045
exec_res = <optimized out>
ev = 0x7ffb6d9b7940
ptr_ev = 0x7ffb831299c0
#9 handle_slave_sql (arg=arg@entry=0x1c6e2f20) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/rpl_slave.cc:5894
thd_added = true
llbuff1 = "59365801", '\000' <repeats 13 times>
saved_master_log_name = "/tmp/\000\000\000\300#7\001\000\000\000\000\001\000\000\000\000\000\000\000\360_7\001\000\000\000\000\260\235\022\203\373\177\000\000`\240/\001\000\000\000\000\060\235\022\203\373\177\000\000\342Z\261\000\000\000\000\000\300#7\001", '\000' <repeats 20 times>, "\001\000\001\000\000\000\000\000\002", '\000' <repeats 11 times>, "%\000\000\000\001\000\001\000\000\000\000\000\n\000\000\000\000\000\000\000\360_7\001\000\000\000\000pp0\001\000\000\000\000P\324\061\001\000\000\000\000mC\261\000\000\000\000\000\000\000\006\000\000\000\000\000\300#7\001", '\000' <repeats 20 times>"\260, \235\022\203\373\177\000\000@=\325\341\377\177\000\000`\236\022\203\373\177\000\000\367\217\254", '\000' <repeats 25 times>, "\004\000\000\000\001\000\000\000\000\000\000\000\037\024\352\245\345\317o\000\220B\325\341\377\177\000\000\\B\325"...
saved_log_pos = 0
saved_master_log_pos = 0
rli = 0x1c724d60
errmsg = 0x0
llbuff = "59365638", '\000' <repeats 13 times>
saved_log_name = "\003\000\000\000\016\000\000\000\000\060\215\344\377\177\000\000\260\004v\034\000\000\000\000\200[3\001\000\000\000\000@=\325\341\377\177\000\000\000\000\000\000\000\000\000\000\323i\v\217\321{%\000p[\261", '\000' <repeats 381 times>"\331, w\261\000\000\000\000\000\340\234\022\203\373\177\000\000\300#7\001\000\000\000\000\001\200\000\200\000\000\000\000\000C\035\001\000\000\000\000\220\234\022\203\373\177\000\000$Q\261\000\000\000\000\000\002\000\000\000\000\000\000\000\260\235\022\203\373\177\000"
saved_skip = 0
mts_inited = false
__FUNCTION__ = "handle_slave_sql"
thd = 0x1c755980
#10 0x0000000000af3e00 in pfs_spawn_thread (arg=0x1c71c1d0) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/storage/perfschema/pfs.cc:1860
typed_arg = 0x1c71c1d0
user_arg = 0x1c6e2f20
pfs = <optimized out>
user_start_routine = 0x87fa50 <handle_slave_sql(void*)>
reason = <optimized out>
#8 0x0000000000880330 in exec_relay_log_event (rli=0x1c724d60, thd=0x1c755980) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/rpl_slave.cc:4045
exec_res = <optimized out>
ev = 0x7ffb6d9b7940
ptr_ev = 0x7ffb831299c0
#9 handle_slave_sql (arg=arg@entry=0x1c6e2f20) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/sql/rpl_slave.cc:5894
thd_added = true
llbuff1 = "59365801", '\000' <repeats 13 times>
saved_master_log_name = "/tmp/\000\000\000\300#7\001\000\000\000\000\001\000\000\000\000\000\000\000\360_7\001\000\000\000\000\260\235\022\203\373\177\000\000`\240/\001\000\000\000\000\060\235\022\203\373\177\000\000\342Z\261\000\000\000\000\000\300#7\001", '\000' <repeats 20 times>, "\001\000\001\000\000\000\000\000\002", '\000' <repeats 11 times>, "%\000\000\000\001\000\001\000\000\000\000\000\n\000\000\000\000\000\000\000\360_7\001\000\000\000\000pp0\001\000\000\000\000P\324\061\001\000\000\000\000mC\261\000\000\000\000\000\000\000\006\000\000\000\000\000\300#7\001", '\000' <repeats 20 times>"\260, \235\022\203\373\177\000\000@=\325\341\377\177\000\000`\236\022\203\373\177\000\000\367\217\254", '\000' <repeats 25 times>, "\004\000\000\000\001\000\000\000\000\000\000\000\037\024\352\245\345\317o\000\220B\325\341\377\177\000\000\\B\325"...
saved_log_pos = 0
saved_master_log_pos = 0
rli = 0x1c724d60
errmsg = 0x0
llbuff = "59365638", '\000' <repeats 13 times>
saved_log_name = "\003\000\000\000\016\000\000\000\000\060\215\344\377\177\000\000\260\004v\034\000\000\000\000\200[3\001\000\000\000\000@=\325\341\377\177\000\000\000\000\000\000\000\000\000\000\323i\v\217\321{%\000p[\261", '\000' <repeats 381 times>"\331, w\261\000\000\000\000\000\340\234\022\203\373\177\000\000\300#7\001\000\000\000\000\001\200\000\200\000\000\000\000\000C\035\001\000\000\000\000\220\234\022\203\373\177\000\000$Q\261\000\000\000\000\000\002\000\000\000\000\000\000\000\260\235\022\203\373\177\000"
saved_skip = 0
mts_inited = false
__FUNCTION__ = "handle_slave_sql"
thd = 0x1c755980
#10 0x0000000000af3e00 in pfs_spawn_thread (arg=0x1c71c1d0) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-wheezy-x64/percona-server-5.6-5.6.21-69.0/storage/perfschema/pfs.cc:1860
typed_arg = 0x1c71c1d0
user_arg = 0x1c6e2f20
pfs = <optimized out>
user_start_routine = 0x87fa50 <handle_slave_sql(void*)>
klass = <optimized out>
#11 0x00007ffff7bc7b50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#12 0x00007ffff5eb3e6d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#13 0x0000000000000000 in ?? ()
No symbol table info available.
Thank you for the problem report. Please, send also your my.cnf file content from slave and its entire error log content.
Had you identified problematic table and statement that caused this crash while applied by slave (from the binary/relay log)?