Package: php-apcu Version: 5.1.8+4.0.11-1 Severity: grave Tags: patch fixed-upstream
I had originally reported this to ubuntu because we first noticed it on a machine running ubuntu, however, ubuntu doesnt seem to maintain this pkg so therefore I am reporting this here. After upgrading our testing server to bionic, our web application stopped responding entirely after the second request. We traced this to a problem in php-apcu where it would block upon the second call to apcu_entry and completely lock up the php processes causing the server to become unresponsive to any further requests. This issue was already reported and fixed upstream (release 5.1.11) and I have attached the diff for the corresponding commit, though I would like to note that there have been 3 bugfix releases since the packaged version (5.1.9). Upstream issue: https://github.com/krakjoe/apcu/issues/246 Affected systems: Anything running apcu with either php-fpm or apache with mod-php.
diff --git a/apc_cache.c b/apc_cache.c index 3892c9e..8605525 100644 --- a/apc_cache.c +++ b/apc_cache.c @@ -1910,7 +1910,7 @@ PHP_APCU_API void apc_cache_entry(apc_cache_t *cache, zval *key, zend_fcall_info } } } else apc_cache_fetch_internal(cache, Z_STR_P(key), entry, now, &return_value); - }, apc_cache_entry_try_begin()); + }, apc_cache_entry_try_end()); }/*}}}*/ #undef apc_cache_entry_try_begin #undef apc_cache_entry_try_end
