Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
  Moved NEWS entry
  Fixed possible crashes, because of inconsistent PCRE cache and opcache SHM reset

Author: dstogov

ext/opcache/ZendAccelerator.c

@@ -438,7 +438,7 @@ static zend_always_inline zend_string *accel_find_interned_string(zend_string *s
 	}
 
 	if (!ZCG(counted)) {
-		if (accel_activate_add() == FAILURE) {
+		if (!ZCG(accelerator_enabled) || accel_activate_add() == FAILURE) {
 			return str;
 		}
 		ZCG(counted) = 1;
@@ -1154,7 +1154,7 @@ char *accel_make_persistent_key(const char *path, size_t path_length, int *key_l
 			cwd_len = ZSTR_LEN(cwd_str);
 			if (ZCG(cwd_check)) {
 				ZCG(cwd_check) = 0;
-				if ((ZCG(counted) || ZCSG(accelerator_enabled))) {
+				if (ZCG(accelerator_enabled)) {
 
 					zend_string *str = accel_find_interned_string(cwd_str);
 					if (!str) {
@@ -1194,7 +1194,7 @@ char *accel_make_persistent_key(const char *path, size_t path_length, int *key_l
 
 			if (ZCG(include_path_check)) {
 				ZCG(include_path_check) = 0;
-				if ((ZCG(counted) || ZCSG(accelerator_enabled))) {
+				if (ZCG(accelerator_enabled)) {
 
 					zend_string *str = accel_find_interned_string(ZCG(include_path));
 					if (!str) {
@@ -1277,7 +1277,7 @@ int zend_accel_invalidate(const char *filename, size_t filename_len, zend_bool f
 	zend_string *realpath;
 	zend_persistent_script *persistent_script;
 
-	if (!ZCG(enabled) || !accel_startup_ok || !ZCSG(accelerator_enabled) || accelerator_shm_read_lock() != SUCCESS) {
+	if (!ZCG(accelerator_enabled) || accelerator_shm_read_lock() != SUCCESS) {
 		return FAILURE;
 	}
 
@@ -1881,7 +1881,7 @@ zend_op_array *persistent_compile_file(zend_file_handle *file_handle, int type)
 		return accelerator_orig_compile_file(file_handle, type);
 	} else if (file_cache_only) {
 		return file_cache_compile_file(file_handle, type);
-	} else if ((!ZCG(counted) && !ZCSG(accelerator_enabled)) ||
+	} else if (!ZCG(accelerator_enabled) ||
 	           (ZCSG(restart_in_progress) && accel_restart_is_active())) {
 		if (ZCG(accel_directives).file_cache) {
 			return file_cache_compile_file(file_handle, type);
@@ -2168,10 +2168,8 @@ static int persistent_stream_open_function(const char *filename, zend_file_handl
 /* zend_resolve_path() replacement for PHP 5.3 and above */
 static zend_string* persistent_zend_resolve_path(const char *filename, size_t filename_len)
 {
-	if (ZCG(enabled) && accel_startup_ok &&
-		!file_cache_only &&
-	    (ZCG(counted) || ZCSG(accelerator_enabled)) &&
-	    !ZCSG(restart_in_progress)) {
+	if (!file_cache_only &&
+	    ZCG(accelerator_enabled)) {
 
 		/* check if callback is called from include_once or it's a main request */
 		if ((!EG(current_execute_data) &&
@@ -2313,6 +2311,7 @@ int accel_activate(INIT_FUNC_ARGS)
 					zend_alter_ini_entry_chars(key, "0", 1, ZEND_INI_SYSTEM, ZEND_INI_STAGE_RUNTIME);
 					zend_string_release_ex(key, 0);
 					zend_accel_error(ACCEL_LOG_WARNING, "Can't cache files in chroot() directory with too big inode");
+					ZCG(accelerator_enabled) = 0;
 					return SUCCESS;
 				}
 			}
@@ -2374,12 +2373,15 @@ int accel_activate(INIT_FUNC_ARGS)
 				}
 				accel_restart_leave();
 			}
-		} else {
+		}
+		if (!ZCG(pcre_reseted)) {
 			reset_pcre = 1;
 		}
 		zend_shared_alloc_unlock();
 	}
 
+	ZCG(accelerator_enabled) = ZCSG(accelerator_enabled);
+
 	SHM_PROTECT();
 	HANDLE_UNBLOCK_INTERRUPTIONS();
 
@@ -2391,8 +2393,10 @@ int accel_activate(INIT_FUNC_ARGS)
 		realpath_cache_clean();
 
 		accel_reset_pcre_cache();
+		ZCG(pcre_reseted) = 0;
 	} else if (reset_pcre) {
 		accel_reset_pcre_cache();
+		ZCG(pcre_reseted) = 1;
 	}
 
 	if (ZCSG(preload_script)) {

ext/opcache/ZendAccelerator.h

@@ -191,6 +191,8 @@ typedef struct _zend_accel_globals {
 	int                     counted;   /* the process uses shared memory */
 	zend_bool               enabled;
 	zend_bool               locked;    /* thread obtained exclusive lock */
+	zend_bool               accelerator_enabled; /* accelerator enabled for current request */
+	zend_bool               pcre_reseted;
 	HashTable               bind_hash; /* prototype and zval lookup table */
 	zend_accel_directives   accel_directives;
 	zend_string            *cwd;                  /* current working directory or NULL */

ext/opcache/zend_accelerator_module.c

@@ -433,9 +433,7 @@ void zend_accel_info(ZEND_MODULE_INFO_FUNC_ARGS)
 {
 	php_info_print_table_start();
 
-	if (ZCG(enabled) && accel_startup_ok &&
-		((ZCG(counted) || ZCSG(accelerator_enabled)) || file_cache_only)
-	) {
+	if (ZCG(accelerator_enabled) || file_cache_only) {
 		php_info_print_table_row(2, "Opcode Caching", "Up and Running");
 	} else {
 		php_info_print_table_row(2, "Opcode Caching", "Disabled");
@@ -535,7 +533,7 @@ static int accelerator_get_scripts(zval *return_value)
 	struct timeval exec_time;
 	struct timeval fetch_time;
 
-	if (!ZCG(enabled) || !accel_startup_ok || !ZCSG(accelerator_enabled) || accelerator_shm_read_lock() != SUCCESS) {
+	if (!ZCG(accelerator_enabled) || accelerator_shm_read_lock() != SUCCESS) {
 		return 0;
 	}
 
@@ -597,7 +595,7 @@ static ZEND_FUNCTION(opcache_get_status)
 	array_init(return_value);
 
 	/* Trivia */
-	add_assoc_bool(return_value, "opcache_enabled", ZCG(enabled) && (ZCG(counted) || ZCSG(accelerator_enabled)));
+	add_assoc_bool(return_value, "opcache_enabled", ZCG(accelerator_enabled));
 
 	if (ZCG(accel_directives).file_cache) {
 		add_assoc_string(return_value, "file_cache", ZCG(accel_directives).file_cache);
@@ -879,7 +877,7 @@ static ZEND_FUNCTION(opcache_is_script_cached)
 		RETURN_FALSE;
 	}
 
-	if (!ZCG(enabled) || !accel_startup_ok || !ZCSG(accelerator_enabled)) {
+	if (!ZCG(accelerator_enabled)) {
 		RETURN_FALSE;
 	}