diff options
Diffstat (limited to 'server/mpm/experimental')
| -rw-r--r-- | server/mpm/experimental/event/fdqueue.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/server/mpm/experimental/event/fdqueue.c b/server/mpm/experimental/event/fdqueue.c index c0ef9bbb..5a1baa94 100644 --- a/server/mpm/experimental/event/fdqueue.c +++ b/server/mpm/experimental/event/fdqueue.c @@ -194,10 +194,16 @@ void ap_push_pool(fd_queue_info_t * queue_info, (*new_recycle)); new_recycle->pool = pool_to_recycle; for (;;) { - new_recycle->next = queue_info->recycled_pools; + /* + * Save queue_info->recycled_pool in local variable next because + * new_recycle->next can be changed after apr_atomic_casptr + * function call. For gory details see PR 44402. + */ + struct recycled_pool *next = queue_info->recycled_pools; + new_recycle->next = next; if (apr_atomic_casptr ((volatile void **) &(queue_info->recycled_pools), - new_recycle, new_recycle->next) == new_recycle->next) { + new_recycle, next) == next) { break; } } |