From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Wed, 18 May 2016 18:50:01 +0000 (-0400)
Subject: Fix: urcu-bp: re-initialize list head on library exit
X-Git-Tag: v0.9.3~21
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=e44dd88adfc9a89b6cd7393163bc0d680d292f4d;p=userspace-rcu.git

Fix: urcu-bp: re-initialize list head on library exit

In case an application would try to create threads after the urcu-bp
library destructor has run, make sure the arena chunk list is
re-initialized after the memory mappings are unmapped.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/urcu-bp.c b/urcu-bp.c
index 22e17cc..cbdebf4 100644
--- a/urcu-bp.c
+++ b/urcu-bp.c
@@ -612,6 +612,7 @@ void rcu_bp_exit(void)
 			munmap(chunk, chunk->data_len
 					+ sizeof(struct registry_chunk));
 		}
+		CDS_INIT_LIST_HEAD(&registry_arena.chunk_list);
 		ret = pthread_key_delete(urcu_bp_key);
 		if (ret)
 			abort();