Stack trace #1:

stack_bottom = 0xb443efa8 thread_stack 0x30c00
 32 libexec/mysqld(my_print_stacktrace+0x32) [0x85a7311]
 33 libexec/mysqld(handle_segfault+0x2cd) [0x8243a67]
 34 [0xb7ef5400]
 35 /lib/i686/cmov/libc.so.6(abort+0x188) [0xb7c24018]
 36 /lib/i686/cmov/libc.so.6(__assert_fail+0xee) [0xb7c1b5be]
 37 libexec/mysqld(Diagnostics_area::set_ok_status(THD*, unsigned long long, unsigned long long, char const*)+    0x74) [0x83059be]
 38 libexec/mysqld(my_ok(THD*, unsigned long long, unsigned long long, char const*)+0x59) [0x81748a7]
 39 libexec/mysqld(mysql_rm_table(THD*, TABLE_LIST*, char, char)+0x155) [0x83a0aaf]
 40 libexec/mysqld(mysql_execute_command(THD*)+0x417b) [0x8258469]
 41 libexec/mysqld(mysql_parse(THD*, char const*, unsigned int, char const**)+0x22f) [0x825d1dd]
 42 libexec/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x87e) [0x825dbec]
 43 libexec/mysqld(do_command(THD*)+0x242) [0x825ef16]
 44 libexec/mysqld(handle_one_connection+0x11d) [0x824cfdd]
 45 /lib/i686/cmov/libpthread.so.0 [0xb7eca4c0]
 46 /lib/i686/cmov/libc.so.6(clone+0x5e) [0xb7cd76de]
 47 Trying to get some variables.
 48 Some pointers may be invalid and cause the dump to abort...
 49 thd->query at 0x93094c8 = drop table crash_q
 50 thd->thread_id=155
 51 thd->killed=NOT_KILLED