Bug #74623 [Com]: Invoke HTMLPurifier occur CPU 100%

Edit report at https://bugs.php.net/bug.php?id=74623&edit=1 ID: 74623 Comment by: Xiphin at qq dot com Reported by: lkebin at gmail dot com Summary: Invoke HTMLPurifier occur CPU 100% Status: Open Type: Bug Package: opcache Operating System: CentOS 6.9 PHP Version: 7.1.5 Block user comment: N Private report: N New Comment: https://gist.github.com/lkebin/e25594cfd493e984054686a7cd2ec4b8 You can fix it by follow: line 14727: change "$current_li = false;" to "$current_li = null;" line 14748: change "if ($current_li === false) {" to "if ($current_li === null) {" Previous Comments: ------------------------------------------------------------------------ [2017-06-03 01:02:09] ezyang@php.net Xiphin reports that the following patch to HTML Purifier solves the problem. Maybe this will help diagnose the opcode problem: https://github.com/ezyang/htmlpurifier/pull/137 ------------------------------------------------------------------------ [2017-05-22 03:08:51] lkebin at gmail dot com Run the script should be ./sapi/cli/php -c ./php.ini-development ~/HTMLPurifier.standalone.php ------------------------------------------------------------------------ [2017-05-21 11:45:58] lkebin at gmail dot com Description: ------------ When the php run the code which invoke HTMLPurifier, The php-fpm or php cli processes CPU usage 100%, The php-fpm will occur Nginx response 504 (time out). When I run php HTMLPurifier.standalone.php, the process CPU usage to 100% and can not be exit normally. I need force kill it. The problem occur php 7.1.5/7.1.4 (I tested versions on my virtual machine). Also I tested php 7.0.19, No problem with it. I compiled the official released version: ./configure --enable-debug make Changed opcache.enable_cli=1 in the php.ini-development, and loaded opcache.so file from php-src/modules/ directory. Run the script ./sapi/cli/php -c ~/HTMLPurifier.standalone.php The gdb backtrace ---- gdb backtrace ---- (gdb) bt #0 0x00007ffff63b2495 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #1 0x00007ffff63b3c75 in abort () at abort.c:92 #2 0x00007ffff63ab60e in __assert_fail_base ( fmt=<value optimized out>, assertion=0x7fffef950328 "0", file=0x7fffef950268 "/root/download/php-7.1.5/ext/opcache/Optimizer/zend_inference.c", line=<value optimized out>, function=<value optimized out>) at assert.c:96 #3 0x00007ffff63ab6d0 in __assert_fail (assertion=0x7fffef950328 "0", file=0x7fffef950268 "/root/download/php-7.1.5/ext/opcache/Optimizer/zend_inference.c", line=1902, function=0x7fffef950cb0 "check_type_narrowing") at assert.c:105 #4 0x00007fffef92a210 in check_type_narrowing ( op_array=0x7fffe74f06f8, ssa=0x7fffe7216700, worklist=0x7fffffffa700, var=37, old_type=402653444, new_type=411040760) at /root/download/php-7.1.5/ext/opcache/Optimizer/zend_inference.c:1902 #5 0x00007fffef939041 in zend_update_type_info ( op_array=0x7fffe74f06f8, ssa=0x7fffe7216700, script=0x7ffff5a7a000, worklist=0x7fffffffa700, i=44) at /root/download/php-7.1.5/ext/opcache/Optimizer/zend_inference.c:3113 #6 0x00007fffef93b810 in zend_infer_types_ex (op_array=0x7fffe74f06f8, script=0x7ffff5a7a000, ssa=0x7fffe7216700, worklist=0x7fffffffa700) at /root/download/php-7.1.5/ext/opcache/Optimizer/zend_inference.c:3332 #7 0x00007fffef93d743 in zend_infer_types (op_array=0x7fffe74f06f8, script=0x7ffff5a7a000, ssa=0x7fffe7216700) at /root/download/php-7.1.5/ext/opcache/Optimizer/zend_inference.c:3811 #8 0x00007fffef93dbae in zend_ssa_inference (arena=0x7fffffffa860, op_array=0x7fffe74f06f8, script=0x7ffff5a7a000, ssa=0x7fffe7216700) at /root/download/php-7.1.5/ext/opcache/Optimizer/zend_inference.c:3876 #9 0x00007fffef914839 in zend_dfa_analyze_op_array ( ---Type <return> to continue, or q <return> to quit--- op_array=0x7fffe74f06f8, ctx=0x7fffffffa860, ssa=0x7fffe7216700, flags=0x7fffe72166fc) at /root/download/php-7.1.5/ext/opcache/Optimizer/dfa_pass.c:106 #10 0x00007fffef8feae5 in zend_optimize_script (script=0x7ffff5a7a000, optimization_level=2147467263, debug_level=0) at /root/download/php-7.1.5/ext/opcache/Optimizer/zend_optimizer.c:993 #11 0x00007fffef8dab79 in cache_script_in_shared_memory ( new_persistent_script=0x7ffff5a7a000, key=0x1126d90 "/root/HTMLPurifier.standalone.php", key_length=33, from_shared_memory=0x7fffffffaaa0) at /root/download/php-7.1.5/ext/opcache/ZendAccelerator.c:1273 #12 0x00007fffef8dc5ad in persistent_compile_file ( file_handle=0x7fffffffe030, type=8) at /root/download/php-7.1.5/ext/opcache/ZendAccelerator.c:1865 #13 0x000000000087b325 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /root/download/php-7.1.5/Zend/zend.c:1470 #14 0x00000000007e54a6 in php_execute_script ( primary_file=0x7fffffffe030) at /root/download/php-7.1.5/main/main.c:2537 #15 0x000000000096f87a in do_cli (argc=4, argv=0x1126cf0) at /root/download/php-7.1.5/sapi/cli/php_cli.c:993 #16 0x00000000009707b9 in main (argc=4, argv=0x1126cf0) at /root/download/php-7.1.5/sapi/cli/php_cli.c:1381 Test script: --------------- https://gist.github.com/lkebin/e25594cfd493e984054686a7cd2ec4b8 Expected result: ---------------- From php cli to run the test script should be empty output and exit 0 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74623&edit=1