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Fix shutdown crash caused by modules being left open.

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It is only safe to run ast_register_cleanup callbacks when all modules
have been unloaded.  Previously these callbacks were run during graceful
shutdown, making it possible to crash during shutdown.

ASTERISK-26513 #close

Change-Id: Ibfa635bb688d1227ec54aa211d90d6bd45052e21
This commit is contained in:
Corey Farrell
2016-10-27 22:49:43 -04:00
parent e8a3af2629
commit f373de3020
4 changed files with 8 additions and 10 deletions
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5
main/asterisk.c
View File

@@ -2140,8 +2140,9 @@ static void really_quit(int num, shutdown_nice_t niceness, int restart)
struct ast_json *json_object = NULL;
int run_cleanups = niceness >= SHUTDOWN_NICE;
if (run_cleanups) {
ast_module_shutdown();
if (run_cleanups && modules_shutdown()) {
ast_verb(0, "Some modules could not be unloaded, switching to fast shutdown\n");
run_cleanups = 0;
}
if (!restart) {

5
main/loader.c
View File

@@ -613,7 +613,7 @@ static struct ast_module *load_dynamic_module(const char *resource_in, unsigned
#endif
void ast_module_shutdown(void)
int modules_shutdown(void)
{
struct ast_module *mod;
int somethingchanged = 1, final = 0;
@@ -663,7 +663,10 @@ void ast_module_shutdown(void)
}
} while (somethingchanged && !final);
final = AST_DLLIST_EMPTY(&module_list);
AST_DLLIST_UNLOCK(&module_list);
return !final;
}
int ast_unload_resource(const char *resource_name, enum ast_module_unload_mode force)