Bug #70842 [NEW]: Persistent Stream Segmentation Fault

From: caleb dot champlin at gmail dot com Operating system: Linux PHP version: 7.0.0RC6 Package: Streams related Bug Type: Bug Bug description:Persistent Stream Segmentation Fault Description: ------------ Using PHP-FPM and presumably the Apache module in certain situations accessing persistent streams will result in a segmentation fault. Build Configuration: ./configure --build=x86_64-alpine-linux-musl \ --host=x86_64-alpine-linux-musl \ --prefix=/usr \ --sysconfdir=/etc/php \ --localstatedir=/var \ --with-layout=GNU \ --with-config-file-path=/etc/php \ --with-config-file-scan-dir=/etc/php/conf.d \ --enable-inline-optimization \ --enable-debug \ --disable-rpath \ --disable-static \ --enable-shared \ --mandir=/usr/share/man \ --with-pic \ --disable-cli \ --enable-fpm \ --without-db1 \ --without-db2 \ --without-db3 \ --without-qdbm \ --with-pcre-regex=/usr \ Test script: --------------- I have not been able to produce a script that will consistently reproduce the segmentation fault. General steps: 1) In php script call steam_socket_client with flags STREAM_CLIENT_CONNECT | STREAM_CLIENT_PERSISTENT 2) call fwrite with socket resource 3) Execute page multiple times through fpm and php will segfault. (With small test scripts I generally cannot reproduce, if I start including php files with non-executed code (class definitions) at the top of my test scripts then I can get crashes to occur consistently) Actual result: -------------- #0 0x00005634ca7c2c1e in php_sockop_write (stream=0x5634ccfb3700, buf=0x7f2d06159ec0 "*2\r\n$6\r\nselect\r\n$1\r\n0\r\n", count=23) at /home/test/php-src-php-7.0.0RC6/main/streams/xp_socket.c:111 111 php_stream_notify_progress_increment(PHP_STREAM_CONTEXT(stream), didwrite, 0); (gdb) bt #0 0x00005634ca7c2c1e in php_sockop_write (stream=0x5634ccfb3700, buf=0x7f2d06159ec0 "*2\r\n$6\r\nselect\r\n$1\r\n0\r\n", count=23) at /home/test/php-src-php-7.0.0RC6/main/streams/xp_socket.c:111 #1 0x00005634ca7b163c in _php_stream_write_buffer (stream=0x5634ccfb3700, buf=0x7f2d06159ec0 "*2\r\n$6\r\nselect\r\n$1\r\n0\r\n", count=23) at /home/test/php-src-php-7.0.0RC6/main/streams/streams.c:1115 #2 0x00005634ca7b19f2 in _php_stream_write (stream=0x5634ccfb3700, buf=0x7f2d06159ec0 "*2\r\n$6\r\nselect\r\n$1\r\n0\r\n", count=23) at /home/test/php-src-php-7.0.0RC6/main/streams/streams.c:1230 #3 0x00005634ca70345a in zif_fwrite (execute_data=0x7f2d1be14160, return_value=0x7f2d1be14140) at /home/test/php-src-php-7.0.0RC6/ext/standard/file.c:1210 #4 0x00005634ca88b532 in ZEND_DO_ICALL_SPEC_HANDLER () at /home/test/php-src-php-7.0.0RC6/Zend/zend_vm_execute.h:586 #5 0x00005634ca88af38 in execute_ex (ex=0x7f2d1be14030) at /home/test/php-src-php-7.0.0RC6/Zend/zend_vm_execute.h:414 #6 0x00005634ca88b057 in zend_execute (op_array=0x7f2d1be6b000, return_value=0x0) at /home/test/php-src-php-7.0.0RC6/Zend/zend_vm_execute.h:458 #7 0x00005634ca8287af in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/test/php-src-php-7.0.0RC6/Zend/zend.c:1428 #8 0x00005634ca7920c2 in php_execute_script (primary_file=0x7fff22149f90) at /home/test/php-src-php-7.0.0RC6/main/main.c:2471 #9 0x00005634ca908200 in main (argc=1, argv=0x7fff2214a368) at /home/test/php-src-php-7.0.0RC6/sapi/fpm/fpm/fpm_main.c:1944 -- Edit bug report at https://bugs.php.net/bug.php?id=70842&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70842&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70842&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70842&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70842&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70842&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70842&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70842&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70842&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70842&r=support Expected behavior: https://bugs.php.net/fix.php?id=70842&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70842&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70842&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70842&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70842&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70842&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70842&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70842&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70842&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70842&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70842&r=mysqlcfg