From: Olivier Houchard <ohouchard@haproxy.com>
Date: Sat, 9 May 2026 17:27:12 +0000 (+0200)
Subject: BUG/MEDIUM: servers: Only requeue servers if they are up
X-Git-Url: http://www.kaiwu.me/postgresql/commit/?a=commitdiff_plain;h=2a1599297b87331ad67a8fbf37310dde1b90bd30;p=haproxy.git

BUG/MEDIUM: servers: Only requeue servers if they are up

In init_srv_requeue(), only attempt to run the tasklet if the server is
actually running, otherwise it will end up being queued a second time,
when the server is actually brought up, and that will lead to a
corrupted mt_list.
This can easily be reproduced by adding a dynamic server, as those start
disabled, and then enabling and disabling it a couple of times.
This should fix github issue #3360.

This should be backported up to 3.2.
---

diff --git a/src/server.c b/src/server.c
index 8e49f79cf..ebc8ec210 100644
--- a/src/server.c
+++ b/src/server.c
@@ -6050,7 +6050,8 @@ static int init_srv_requeue(struct server *srv)
 	 * failed to queue itself when brought up, which could happen if
 	 * a memory allocation failed.
 	 */
-	tasklet_wakeup(t);
+	if (srv->cur_state != SRV_ST_STOPPED)
+		tasklet_wakeup(t);
 	return ERR_NONE;
 }