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author | Sammy Kaye Powers <sammyk@php.net> | 2020-09-09 13:00:25 -0700 |
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committer | Sammy Kaye Powers <sammyk@php.net> | 2020-09-09 13:00:25 -0700 |
commit | 3375374c3338381ba79039a1ed0f796ef7d5cc9c (patch) | |
tree | 19b0f43789eb1c967e5fec5497c97ae02c454ede /ext/opcache/ZendAccelerator.c | |
parent | 3861cb87c2a48f5fa3111baece8a3184aada4b9b (diff) | |
parent | 1b5268265c13b35cba290a5578ff973f797a0620 (diff) | |
download | php-git-3375374c3338381ba79039a1ed0f796ef7d5cc9c.tar.gz |
Merge branch 'PHP-7.4'
* PHP-7.4:
Fix #79825: opcache.file_cache causes SIGSEGV with custom opcode handlers
Diffstat (limited to 'ext/opcache/ZendAccelerator.c')
-rw-r--r-- | ext/opcache/ZendAccelerator.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/ext/opcache/ZendAccelerator.c b/ext/opcache/ZendAccelerator.c index 6cef3ebe10..72dc299219 100644 --- a/ext/opcache/ZendAccelerator.c +++ b/ext/opcache/ZendAccelerator.c @@ -2716,6 +2716,9 @@ static void accel_gen_system_id(void) { PHP_MD5_CTX context; unsigned char digest[16]; + zend_module_entry *module; + zend_extension *extension; + zend_llist_position pos; PHP_MD5Init(&context); PHP_MD5Update(&context, PHP_VERSION, sizeof(PHP_VERSION)-1); @@ -2726,6 +2729,19 @@ static void accel_gen_system_id(void) PHP_MD5Update(&context, __DATE__, sizeof(__DATE__)-1); PHP_MD5Update(&context, __TIME__, sizeof(__TIME__)-1); } + /* Modules may have changed after restart which can cause dangling pointers from + * custom opcode handlers in the second-level cache files + */ + ZEND_HASH_FOREACH_PTR(&module_registry, module) { + PHP_MD5Update(&context, module->name, strlen(module->name)); + PHP_MD5Update(&context, module->version, strlen(module->version)); + } ZEND_HASH_FOREACH_END(); + extension = (zend_extension *) zend_llist_get_first_ex(&zend_extensions, &pos); + while (extension) { + PHP_MD5Update(&context, extension->name, strlen(extension->name)); + PHP_MD5Update(&context, extension->version, strlen(extension->version)); + extension = (zend_extension *) zend_llist_get_next_ex(&zend_extensions, &pos); + } PHP_MD5Final(digest, &context); php_hash_bin2hex(accel_system_id, digest, sizeof digest); } |