0006870: SIGBUS in sma_allocate

I have several core dumps from the httpd process. Here is one backtrace:<br /> <br /> Core was generated by `/usr/sbin/httpd'.<br /> Program terminated with signal 7, Bus error.<br /> #0 sma_allocate (header=0x7f82439d5000, size=<value optimized out>, fragment=<value optimized out>,<br /> allocated=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:250<br /> 250 nxt->fprev = cur->fprev;<br /> Missing separate debuginfos, use: debuginfo-install giflib-4.1.6-3.1.el6.x86_64 libICE-1.0.6-1.el6.x86_64 libc-client-2007e-11.el6.x86_64 libidn-1.18-2.el6.x86_64 libmemcached-0.31-1.1.el6.x86_64 nspr-4.10.2-1.el6_5.x86_64 nss-3.15.3-3.el6_5.x86_64 nss-util-3.15.3-1.el6_5.x86_64 openssl-1.0.1e-16.el6_5.1.x86_64 sqlite-3.6.20-1.el6.x86_64<br /> (gdb) bt<br /> #0 sma_allocate (header=0x7f82439d5000, size=<value optimized out>, fragment=<value optimized out>,<br /> allocated=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:250<br /> <a href="http://bugs.centos.org/view.php?id=1">0000001</a> 0x00007f824ec0081b in apc_sma_malloc_ex (n=4240, fragment=48, allocated=0x7fff12ab0de8)<br /> at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:453<br /> <a href="http://bugs.centos.org/view.php?id=2">0000002</a> 0x00007f824ec00ac3 in apc_sma_malloc (n=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:517<br /> #3 0x00007f824ec0242d in apc_realpool_create (pool_type=APC_MEDIUM_POOL, allocate=0x7f824ec00ab0 <apc_sma_malloc>,<br /> deallocate=0x7f824ec00ad0 <apc_sma_free>, protect=0x7f824ec004c0 <apc_sma_protect>,<br /> unprotect=0x7f824ec004d0 <apc_sma_unprotect>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_pool.c:435<br /> #4 apc_pool_create (pool_type=APC_MEDIUM_POOL, allocate=0x7f824ec00ab0 <apc_sma_malloc>,<br /> deallocate=0x7f824ec00ad0 <apc_sma_free>, protect=0x7f824ec004c0 <apc_sma_protect>,<br /> unprotect=0x7f824ec004d0 <apc_sma_unprotect>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_pool.c:57<br /> #5 0x00007f824ebfefaa in apc_compile_cache_entry (key=..., h=0x7fff12ab4b30, type=8, t=<value optimized out>,<br /> op_array=0x7fff12ab14a8, cache_entry=0x7fff12ab14b0) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_main.c:414<br /> #6 0x00007f824ebff9b5 in my_compile_file (h=0x7fff12ab4b30, type=8) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_main.c:610<br /> <a href="http://bugs.centos.org/view.php?id=7">0000007</a> 0x00007f8249153721 in phar_compile_file (file_handle=0x7fff12ab4b30, type=8) at /usr/src/debug/php-5.3.3/ext/phar/phar.c:3393<br /> <a href="http://bugs.centos.org/view.php?id=8">0000008</a> 0x00007f82513d169a in zend_execute_scripts (type=1134383104, retval=0x3ffffb0, file_count=1134428936)<br /> at /usr/src/debug/php-5.3.3/Zend/zend.c:1214<br /> <a href="http://bugs.centos.org/view.php?id=9">0000009</a> 0x00007fff12ab2780 in ?? ()<br /> <a href="http://bugs.centos.org/view.php?id=10">0000010</a> 0x0000000000000000 in ?? ()<br /> <br /> <br /> Here is another:<br /> Core was generated by `/usr/sbin/httpd'.<br /> Program terminated with signal 7, Bus error.<br /> #0 sma_allocate (header=0x7fe46e34c000, size=<value optimized out>, fragment=<value optimized out>, allocated=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:250<br /> 250 nxt->fprev = cur->fprev;<br /> Missing separate debuginfos, use: debuginfo-install giflib-4.1.6-3.1.el6.x86_64 libICE-1.0.6-1.el6.x86_64 libc-client-2007e-11.el6.x86_64 libidn-1.18-2.el6.x86_64 libmemcached-0.31-1.1.el6.x86_64 nspr-4.10.2-1.el6_5.x86_64 nss-3.15.3-3.el6_5.x86_64 nss-util-3.15.3-1.el6_5.x86_64 openssl-1.0.1e-16.el6_5.1.x86_64 sqlite-3.6.20-1.el6.x86_64<br /> (gdb) bt<br /> #0 sma_allocate (header=0x7fe46e34c000, size=<value optimized out>, fragment=<value optimized out>, allocated=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:250<br /> <a href="http://bugs.centos.org/view.php?id=1">0000001</a> 0x00007fe47957781b in apc_sma_malloc_ex (n=8224, fragment=48, allocated=0x7fff8c8f6328) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:453<br /> <a href="http://bugs.centos.org/view.php?id=2">0000002</a> 0x00007fe479577ac3 in apc_sma_malloc (n=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:517<br /> #3 0x00007fe4795795cd in create_pool_block (pool=0x7fe4703defe8, size=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_pool.c:217<br /> #4 apc_realpool_alloc (pool=0x7fe4703defe8, size=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_pool.c:274<br /> #5 0x00007fe479579766 in apc_pmemcpy (p=0x7fe487dc5ae8, n=4739, pool=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_pool.c:492<br /> #6 0x00007fe4795752b5 in apc_string_pmemcpy (dst=0x7fe4703df250, src=0x7fe487dc3d60, ctxt=0x7fff8c8f74d0) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_compile.c:288<br /> <a href="http://bugs.centos.org/view.php?id=7">0000007</a> my_copy_zval (dst=0x7fe4703df250, src=0x7fe487dc3d60, ctxt=0x7fff8c8f74d0) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_compile.c:337<br /> <a href="http://bugs.centos.org/view.php?id=8">0000008</a> 0x00007fe479572fbd in my_copy_znode (dst=0x7fe4703df248, src=<value optimized out>, ctxt=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_compile.c:427<br /> <a href="http://bugs.centos.org/view.php?id=9">0000009</a> 0x00007fe479573080 in my_copy_zend_op (dst=0x7fe4703df220, src=0x7fe487dc3d30, ctxt=0x7fff8c8f74d0) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_compile.c:445<br /> <a href="http://bugs.centos.org/view.php?id=10">0000010</a> 0x00007fe479573de8 in apc_copy_op_array (dst=0x7fe4703df078, src=0x7fe487dc3540, ctxt=0x7fff8c8f74d0) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_compile.c:1222<br /> <a href="http://bugs.centos.org/view.php?id=11">0000011</a> 0x00007fe479576095 in apc_compile_cache_entry (key=..., h=0x7fff8c8fb190, type=<value optimized out>, t=<value optimized out>, op_array=0x7fff8c8f7b08, cache_entry=0x7fff8c8f7b10) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_main.c:450<br /> #12 0x00007fe4795769b5 in my_compile_file (h=0x7fff8c8fb190, type=8) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_main.c:610<br /> <a href="http://bugs.centos.org/view.php?id=13">0000013</a> 0x00007fe473aca721 in phar_compile_file (file_handle=0x7fff8c8fb190, type=8) at /usr/src/debug/php-5.3.3/ext/phar/phar.c:3393<br /> <a href="http://bugs.centos.org/view.php?id=14">0000014</a> 0x00007fe47bd4977a in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/src/debug/php-5.3.3/Zend/zend.c:1227<br /> <a href="http://bugs.centos.org/view.php?id=15">0000015</a> 0x00007fe47bcf7878 in php_execute_script (primary_file=0x7fff8c8fb190) at /usr/src/debug/php-5.3.3/main/main.c:2261<br /> #16 0x00007fe47bdd2e55 in php_handler (r=0x7fe487dfc2c8) at /usr/src/debug/php-5.3.3/sapi/apache2handler/sapi_apache2.c:669<br /> #17 0x00007fe486845bb0 in ap_run_handler (r=0x7fe487dfc2c8) at /usr/src/debug/httpd-2.2.15/server/config.c:158<br /> #18 0x00007fe48684946e in ap_invoke_handler (r=0x7fe487dfc2c8) at /usr/src/debug/httpd-2.2.15/server/config.c:376<br /> #19 0x00007fe486854b30 in ap_process_request (r=0x7fe487dfc2c8) at /usr/src/debug/httpd-2.2.15/modules/http/http_request.c:282<br /> #20 0x00007fe4868519a8 in ap_process_http_connection (c=0x7fe487df0318) at /usr/src/debug/httpd-2.2.15/modules/http/http_core.c:190<br /> #21 0x00007fe48684d6b8 in ap_run_process_connection (c=0x7fe487df0318) at /usr/src/debug/httpd-2.2.15/server/connection.c:43<br /> #22 0x00007fe486859977 in child_main (child_num_arg=<value optimized out>) at /usr/src/debug/httpd-2.2.15/server/mpm/prefork/prefork.c:667<br /> #23 0x00007fe486859c8a in make_child (s=0x7fe4871a0880, slot=11) at /usr/src/debug/httpd-2.2.15/server/mpm/prefork/prefork.c:763<br /> #24 0x00007fe48685a90c in perform_idle_server_maintenance (_pconf=<value optimized out>, plog=<value optimized out>, s=<value optimized out>) at /usr/src/debug/httpd-2.2.15/server/mpm/prefork/prefork.c:898<br /> <a href="http://bugs.centos.org/view.php?id=25">0000025</a> ap_mpm_run (_pconf=<value optimized out>, plog=<value optimized out>, s=<value optimized out>) at /usr/src/debug/httpd-2.2.15/server/mpm/prefork/prefork.c:1102<br /> #26 0x00007fe486831900 in main (argc=1, argv=0x7fff8c8fb758) at /usr/src/debug/httpd-2.2.15/server/main.c:760<br /> <br /> Core was generated by `/usr/sbin/httpd'.<br /> Program terminated with signal 7, Bus error.<br /> #0 sma_allocate (header=0x7fc0259a4000, size=<value optimized out>, fragment=<value optimized out>, allocated=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:250<br /> 250 nxt->fprev = cur->fprev;<br /> Missing separate debuginfos, use: debuginfo-install giflib-4.1.6-3.1.el6.x86_64 libICE-1.0.6-1.el6.x86_64 libc-client-2007e-11.el6.x86_64 libidn-1.18-2.el6.x86_64 libmemcached-0.31-1.1.el6.x86_64 nspr-4.10.2-1.el6_5.x86_64 nss-3.15.3-3.el6_5.x86_64 nss-util-3.15.3-1.el6_5.x86_64 openssl-1.0.1e-16.el6_5.1.x86_64 sqlite-3.6.20-1.el6.x86_64<br /> (gdb) bt<br /> #0 sma_allocate (header=0x7fc0259a4000, size=<value optimized out>, fragment=<value optimized out>, allocated=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:250<br /> <a href="http://bugs.centos.org/view.php?id=1">0000001</a> 0x00007fc030bcf81b in apc_sma_malloc_ex (n=4240, fragment=48, allocated=0x7fffd7885d88) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:453<br /> <a href="http://bugs.centos.org/view.php?id=2">0000002</a> 0x00007fc030bcfac3 in apc_sma_malloc (n=<value optimized out>) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_sma.c:517<br /> #3 0x00007fc030bd142d in apc_realpool_create (pool_type=APC_MEDIUM_POOL, allocate=0x7fc030bcfab0 <apc_sma_malloc>, deallocate=0x7fc030bcfad0 <apc_sma_free>, protect=0x7fc030bcf4c0 <apc_sma_protect>, unprotect=0x7fc030bcf4d0 <apc_sma_unprotect>)<br /> at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_pool.c:435<br /> #4 apc_pool_create (pool_type=APC_MEDIUM_POOL, allocate=0x7fc030bcfab0 <apc_sma_malloc>, deallocate=0x7fc030bcfad0 <apc_sma_free>, protect=0x7fc030bcf4c0 <apc_sma_protect>, unprotect=0x7fc030bcf4d0 <apc_sma_unprotect>)<br /> at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_pool.c:57<br /> #5 0x00007fc030bcdfaa in apc_compile_cache_entry (key=..., h=0x7fffd7889ad0, type=8, t=<value optimized out>, op_array=0x7fffd7886448, cache_entry=0x7fffd7886450) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_main.c:414<br /> #6 0x00007fc030bce9b5 in my_compile_file (h=0x7fffd7889ad0, type=8) at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_main.c:610<br /> <a href="http://bugs.centos.org/view.php?id=7">0000007</a> 0x00007fc02b122721 in phar_compile_file (file_handle=0x7fffd7889ad0, type=8) at /usr/src/debug/php-5.3.3/ext/phar/phar.c:3393<br /> <a href="http://bugs.centos.org/view.php?id=8">0000008</a> 0x00007fc0333a069a in zend_execute_scripts (type=630865920, retval=0x3ffffb0, file_count=658891464) at /usr/src/debug/php-5.3.3/Zend/zend.c:1214<br /> <a href="http://bugs.centos.org/view.php?id=9">0000009</a> 0x00007fffd7887720 in ?? ()<br /> <a href="http://bugs.centos.org/view.php?id=10">0000010</a> 0x0000000000000000 in ?? ()