Bug #68294 [NEW]: file_exists SIGSEGV for FPM

From: sillyxone at gmail dot com Operating system: Linux PHP version: 5.5.18 Package: Reproducible crash Bug Type: Bug Bug description:file_exists SIGSEGV for FPM Description: ------------ Drupal 7 with AmazonS3 module installed, and configured to connect correctly to S3. FPM version 5.5.18 and 5.4.33 crashed with SIGSEGV (happened on Ubuntu and AMI) when accessing Drupal's /admin/config/media/image-styles/edit/thumbnail. Apache with mod_php works fine. Traced it down to a line calling "file_exists('s3:// ...')". It doesn't crash if S3 module is not configured (e.g. no secret or no key). Otherwise Drupal works normally (I haven't ran into other problem yet). Still crash with Zend Opcache and APC removed. I'm not familiar with the troubleshooting process, but willing to help debug. Let me know what information I can provide. Test script: --------------- AmazonS3 module: https://www.drupal.org/project/amazons3 In Drupal, it's the first called to file_exists() in function theme_image_style_preview() of file modules/image/image.admin.inc The first few lines of core dump: #0 0xb5ee1043 in execute_ex (execute_data=execute_data@entry=0xb9adf0e0) at /build/buildd/php5-5.5.18+dfsg/Zend/zend_vm_execute.h:344 #1 0xb5ea3b3d in dtrace_execute_ex (execute_data=0xb9adf0e0) at /build/buildd/php5-5.5.18+dfsg/Zend/zend_dtrace.c:73 #2 0xb5f6b8e5 in zend_execute (op_array=0xb992f96c) at /build/buildd/php5-5.5.18+dfsg/Zend/zend_vm_execute.h:388 #3 0xb5ea61a4 in zend_call_function (fci=fci@entry=0xbf7a11ec, fci_cache=fci_cache@entry=0xbf7a11d8) at /build/buildd/php5-5.5.18+dfsg/Zend/zend_execute_API.c:937 #4 0xb5ecd341 in zend_call_method (object_pp=object_pp@entry=0xbf7a1290, obj_ce=<optimized out>, obj_ce@entry=0xb9925fd4, fn_proxy=fn_proxy@entry=0xb992609c, function_name=function_name@entry=0xb62c5020 "__tostring", function_name_len=function_name_len@entry=10, retval_ptr_ptr=retval_ptr_ptr@entry=0xbf7a126c, param_count=param_count@entry=0, arg1=arg1@entry=0x0, arg2=arg2@entry=0x0) at /build/buildd/php5-5.5.18+dfsg/Zend/zend_interfaces.c:97 #5 0xb5eda047 in zend_std_cast_object_tostring (readobj=readobj@entry=0xb9907808, writeobj=writeobj@entry=0xbf7a1300, type=type@entry=6) at /build/buildd/php5-5.5.18+dfsg/Zend/zend_object_handlers.c:1533 #6 0xb5eb5574 in zend_make_printable_zval (expr=expr@entry=0xb9907808, expr_copy=expr_copy@entry=0xbf7a1300, use_copy=use_copy@entry=0xbf7a12fc) at /build/buildd/php5-5.5.18+dfsg/Zend/zend.c:258 #7 0xb5f1ca5c in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0xb9adf06c) at /build/buildd/php5-5.5.18+dfsg/Zend/zend_vm_execute.h:30840 -- Edit bug report at https://bugs.php.net/bug.php?id=68294&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68294&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68294&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68294&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68294&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68294&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68294&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68294&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68294&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68294&r=support Expected behavior: https://bugs.php.net/fix.php?id=68294&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68294&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68294&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68294&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68294&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68294&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68294&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68294&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68294&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68294&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68294&r=mysqlcfg