*** stack smashing detected ***: /usr/sbin/mysqld terminated ======= Backtrace: ========= /lib/libc.so.6(__fortify_fail+0x37)[0x7f8c61206677] /lib/libc.so.6(__fortify_fail+0x0)[0x7f8c61206640] /usr/sbin/mysqld(+0x3f698a)[0x7f8c62ed598a] ======= Memory map: ======== 7f87cc000000-7f87cff8c000 rw-p 00000000 00:00 0 7f87cff8c000-7f87d0000000 ---p 00000000 00:00 0 7f87d4000000-7f87d8000000 rw-p 00000000 00:00 0 7f87dc000000-7f87e0000000 rw-p 00000000 00:00 0 7f87e4000000-7f87e7ffb000 rw-p 00000000 00:00 0 7f87e7ffb000-7f87e8000000 ---p 00000000 00:00 0 7f87e8000000-7f87ebeca000 rw-p 00000000 00:00 0 7f87ebeca000-7f87ec000000 ---p 00000000 00:00 0 7f87ec000000-7f87f0000000 rw-p 00000000 00:00 0 7f87f2cb2000-7f87f2cb3000 ---p 00000000 00:00 0 7f87f2cb3000-7f87f2cf3000 rw-p 00000000 00:00 0 7f87f2cf3000-7f87f2cf4000 ---p 00000000 00:00 0 7f87f2cf4000-7f87f2d34000 rw-p 00000000 00:00 0 7f87f2d34000-7f87f2d35000 ---p 00000000 00:00 0 7f87f2d35000-7f87f2d75000 rw-p 00000000 00:00 0 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00:00 0 7f8c601fd000-7f8c60208000 r-xp 00000000 08:08 188070 /lib/libnss_files-2.11.2.so 7f8c60208000-7f8c60407000 ---p 0000b000 08:08 188070 /lib/libnss_files-2.11.2.so 7f8c60407000-7f8c60408000 r--p 0000a000 08:08 188070 /lib/libnss_files-2.11.2.so 7f8c60408000-7f8c60409000 rw-p 0000b000 08:08 188070 /lib/libnss_files-2.11.2.so 7f8c60409000-7f8c60413000 r-xp 00000000 08:08 188064 /lib/libnss_nis-2.11.2.so 7f8c60413000-7f8c60612000 ---p 0000a000 08:08 188064 /lib/libnss_nis-2.11.2.so 7f8c60612000-7f8c60613000 r--p 00009000 08:08 188064 /lib/libnss_nis-2.11.2.so 7f8c60613000-7f8c60614000 rw-p 0000a000 08:08 188064 /lib/libnss_nis-2.11.2.so 7f8c60614000-7f8c6061b000 r-xp 00000000 08:08 188080 /lib/libnss_compat-2.11.2.so 7f8c6061b000-7f8c6081a000 ---p 00007000 08:08 188080 /lib/libnss_compat-2.11.2.so 7f8c6081a000-7f8c6081b000 r--p 00006000 08:08 188080 /lib/libnss_compat-2.11.2.so 7f8c6081b000-7f8c6081c000 rw-p 00007000 08:08 188080 /lib/libnss_compat-2.11.2.so 7f8c60821000-7f8c60922000 rw-p 00000000 00:00 0 7f8c60922000-7f8c60923000 ---p 00000000 00:00 0 7f8c60923000-7f8c61123000 rw-p 00000000 00:00 0 7f8c61123000-7f8c6127b000 r-xp 00000000 08:08 188073 /lib/libc-2.11.2.so 7f8c6127b000-7f8c6147a000 ---p 00158000 08:08 188073 /lib/libc-2.11.2.so 7f8c6147a000-7f8c6147e000 r--p 00157000 08:08 188073 /lib/libc-2.11.2.so 7f8c6147e000-7f8c6147f000 rw-p 0015b000 08:08 188073 /lib/libc-2.11.2.so 7f8c6147f000-7f8c61484000 rw-p 00000000 00:00 0 7f8c61484000-7f8c6149a000 r-xp 00000000 08:08 188482 /lib/libgcc_s.so.1 7f8c6149a000-7f8c61699000 ---p 00016000 08:08 188482 /lib/libgcc_s.so.1 7f8c61699000-7f8c6169a000 rw-p 00015000 08:08 188482 /lib/libgcc_s.so.1 7f8c6169a000-7f8c6171a000 r-xp 00000000 08:08 188082 /lib/libm-2.11.2.so 7f8c6171a000-7f8c6191a000 ---p 00080000 08:08 188082 /lib/libm-2.11.2.so 7f8c6191a000-7f8c6191b000 r--p 00080000 08:08 188082 /lib/libm-2.11.2.so 7f8c6191b000-7f8c6191c000 rw-p 00081000 08:08 188082 /lib/libm-2.11.2.so 7f8c6191c000-7f8c61a12000 r-xp 00000000 08:05 40537 /usr/lib/libstdc++.so.6.0.13 7f8c61a12000-7f8c61c12000 ---p 000f6000 08:05 40537 /usr/lib/libstdc++.so.6.0.13 7f8c61c12000-7f8c61c19000 r--p 000f6000 08:05 40537 /usr/lib/libstdc++.so.6.0.13 7f8c61c19000-7f8c61c1b000 rw-p 000fd000 08:05 40537 /usr/lib/libstdc++.so.6.0.13 7f8c61c1b000-7f8c61c30000 rw-p 00000000 00:00 0 7f8c61c30000-7f8c61c45000 r-xp 00000000 08:08 188083 /lib/libnsl-2.11.2.so 7f8c61c45000-7f8c61e44000 ---p 00015000 08:08 188083 /lib/libnsl-2.11.2.so 7f8c61e44000-7f8c61e45000 r--p 00014000 08:08 188083 /lib/libnsl-2.11.2.so 7f8c61e45000-7f8c61e46000 rw-p 00015000 08:08 188083 /lib/libnsl-2.11.2.so 7f8c61e46000-7f8c61e48000 rw-p 00000000 00:00 0 7f8c61e48000-7f8c61e50000 r-xp 00000000 08:08 188084 /lib/libcrypt-2.11.2.so 7f8c61e50000-7f8c6204f000 ---p 00008000 08:08 188084 /lib/libcrypt-2.11.2.so 7f8c6204f000-7f8c62050000 r--p 00007000 08:08 188084 /lib/libcrypt-2.11.2.so 7f8c62050000-7f8c62051000 rw-p 00008000 08:08 188084 /lib/libcrypt-2.11.2.so 7f8c62051000-7f8c6207f000 rw-p 00000000 00:00 0 7f8c6207f000-7f8c62081000 r-xp 00000000 08:08 188072 /lib/libdl-2.11.2.so 7f8c62081000-7f8c62281000 ---p 00002000 08:08 188072 /lib/libdl-2.11.2.so 7f8c62281000-7f8c62282000 r--p 00002000 08:08 188072 /lib/libdl-2.11.2.so 7f8c62282000-7f8c62283000 rw-p 00003000 08:08 188072 /lib/libdl-2.11.2.so 7f8c62283000-7f8c6228b000 r-xp 00000000 08:08 188354 /lib/libwrap.so.0.7.6 7f8c6228b000-7f8c6248a000 ---p 00008000 08:08 188354 /lib/libwrap.so.0.7.6 7f8c6248a000-7f8c6248c000 rw-p 00007000 08:08 188354 /lib/libwrap.so.0.7.6 7f8c6248c000-7f8c624a3000 r-xp 00000000 08:05 40184 /usr/lib/libz.so.1.2.3.4 7f8c624a3000-7f8c626a2000 ---p 00017000 08:05 40184 /usr/lib/libz.so.1.2.3.4 7f8c626a2000-7f8c626a3000 rw-p 00016000 08:05 40184 /usr/lib/libz.so.1.2.3.4 7f8c626a3000-7f8c626ba000 r-xp 00000000 08:08 188074 /lib/libpthread-2.11.2.so 7f8c626ba000-7f8c628b9000 ---p 00017000 08:08 188074 /lib/libpthread-2.11.2.so 7f8c628b9000-7f8c628ba000 r--p 00016000 08:08 188074 /lib/libpthread-2.11.2.so 7f8c628ba000-7f8c628bb000 rw-p 00017000 08:08 188074 /lib/libpthread-2.11.2.so 7f8c628bb000-7f8c628bf000 rw-p 00000000 00:00 0 7f8c628bf000-7f8c628dd000 r-xp 00000000 08:08 188085 /lib/ld-2.11.2.so 7f8c628e7000-7f8c628e8000 ---p 00000000 00:00 0 7f8c628e8000-7f8c62928000 rw-p 00000000 00:00 0 7f8c62928000-7f8c62929000 ---p 00000000 00:00 0 7f8c62929000-7f8c62969000 rw-p 00000000 00:00 0 7f8c62969000-7f8c6296a000 ---p 00000000 00:00 0 7f8c6296a000-7f8c629aa000 rw-p 00000000 00:00 0 7f8c629aa000-7f8c629ab000 ---p 00000000 00:00 0 7f8c629ab000-7f8c629eb000 rw-p 00000000 00:00 0 7f8c629eb000-7f8c629ec000 ---p 00000000 00:00 0 7f8c629ec000-7f8c62a2c000 rw-p 00000000 00:00 0 7f8c62a2c000-7f8c62a2d000 ---p 00000000 00:00 0 7f8c62a2d000-7f8c62a6d000 rw-p 00000000 00:00 0 7f8c62a6d000-7f8c62a6e000 ---p 00000000 00:00 0 7f8c62a6e000-7f8c62aae000 rw-p 00000000 00:00 0 7f8c62acf000-7f8c62ad5000 rw-p 00000000 00:00 0 7f8c62ada000-7f8c62adc000 rw-p 00000000 00:00 0 7f8c62adc000-7f8c62add000 r--p 0001d000 08:08 188085 /lib/ld-2.11.2.so 7f8c62add000-7f8c62ade000 rw-p 0001e000 08:08 188085 /lib/ld-2.11.2.so 7f8c62ade000-7f8c62adf000 rw-p 00000000 00:00 0 7f8c62adf000-7f8c633a6000 r-xp 00000000 08:05 267924 /usr/sbin/mysqld 7f8c635a5000-7f8c6360f000 r--p 008c6000 08:05 267924 /usr/sbin/mysqld 7f8c6360f000-7f8c63680000 rw-p 00930000 08:05 267924 /usr/sbin/mysqld 7f8c63680000-7f8c63698000 rw-p 00000000 00:00 0 7f8c6509b000-7f8c9deb4000 rw-p 00000000 00:00 0 [heap] 7fff384a0000-7fff384b5000 rw-p 00000000 00:00 0 [stack] 7fff38575000-7fff38576000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] 100909 11:52:30 - mysqld got signal 6 ; 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. 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. key_buffer_size=268435456 read_buffer_size=131072 max_used_connections=194 max_threads=750 threads_connected=9 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1901866 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x7f87e714a060 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 = 0x7f8804fe9e88 thread_stack 0x40000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x7f8c631454d9] /usr/sbin/mysqld(handle_segfault+0x404) [0x7f8c62e4f8a4] /lib/libpthread.so.0(+0xef60) [0x7f8c626b1f60] /lib/libc.so.6(gsignal+0x35) [0x7f8c61155175] /lib/libc.so.6(abort+0x180) [0x7f8c61157f80] /lib/libc.so.6(+0x682bb) [0x7f8c6118b2bb] /lib/libc.so.6(__fortify_fail+0x37) [0x7f8c61206677] /lib/libc.so.6(__fortify_fail+0) [0x7f8c61206640] /usr/sbin/mysqld(+0x3f698a) [0x7f8c62ed598a] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x7f87dd79f610 is an invalid pointer thd->thread_id=532167 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. Writing a core file