Program received signal SIGSEGV, Segmentation fault. __memcpy_sse2_unaligned () at ../sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S:482 482 ../sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S: No such file or directory. (gdb) bt #0 __memcpy_sse2_unaligned () at ../sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S:482 #1 0x08098780 in memcpy (__len=17, __src=0x0, __dest=) at /usr/include/i386-linux-gnu/bits/string3.h:53 #2 sdscatlen (s=0x80c7d80 "", t=0x0, len=17) at sds.c:244 #3 0x080967b6 in redisvFormatCommand (target=0xbfffe8b8, format=0x809fd45 "ZADD %b %b %b", ap=0xbfffe930 "\340\247\f\b\350\005") at hiredis.c:270 #4 0x0809b91c in redisvAsyncCommand (ac=0x80c83c0, fn=0x0, privdata=0x0, format=0x809fd45 "ZADD %b %b %b", ap=0xbfffe920 "Э\f\b\036") at async.c:654 #5 0x0809b99c in redisAsyncCommand (ac=0x80c83c0, fn=0x0, privdata=0x0, format=0x809fd45 "ZADD %b %b %b") at async.c:669 #6 0x0806c621 in RayLogger_log_event (db=0x80c7de0, key=0x80cadd0 "event_log:\220\242a|E\024\225J\257\231\337\"b\331\"+\a\215\063\273", key_length=30, value=0x80ca7e0 "[[1507930764.77656, \"ray:get_task\", 1, {}], [1507930794.105956, \"ray:import_function_to_run\", 1, {}], [1507930794.10643, \"ray:import_function_to_run\", 2, {}], [1507930794.106739, \"ray:import_function_"..., value_length=1512, timestamp=1507930838.2222271) at /home/achand/ray/src/common/logging.cc:100 #7 0x08056c35 in process_message(aeEventLoop*, int, void*, int) () #8 0x0807bcbd in aeProcessEvents (eventLoop=0x80bea38, flags=3) ---Type to continue, or q to quit--- /ray/src/common/thirdparty/ae/ae.c:412 #9 0x0807c19b in aeMain (eventLoop=0x80bea38) at /home/achand/ray/src/common/thirdparty/ae/ae.c:455 #10 0x0805f8f8 in event_loop_run (loop=0x80bea38) at /home/achand/ray/src/common/event_loop.cc:58 #11 0x0805615e in start_server(char const*, char const*, char const*, int, char const*, char const*, char const*, bool, double const*, char const*, int) () #12 0x0804c3e9 in main ()