linux-kernel - [PATCH for-next] RDMA/cm: Rate limit destroy CM ID timeout error message

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Message-ID: <20250912100525.531102-1-haakon.bugge@oracle.com>
Date: Fri, 12 Sep 2025 12:05:20 +0200
From: Håkon Bugge <haakon.bugge@...cle.com>
To: Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
        Sean Hefty <shefty@...dia.com>,
        Vlad Dumitrescu <vdumitrescu@...dia.com>,
        Or Har-Toov <ohartoov@...dia.com>,
        Håkon Bugge <haakon.bugge@...cle.com>,
        Jacob Moroni <jmoroni@...gle.com>,
        Manjunath Patil <manjunath.b.patil@...cle.com>
Cc: linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH for-next] RDMA/cm: Rate limit destroy CM ID timeout error message

When the destroy CM ID timeout kicks in, you typically get a storm of
them which creates a log flooding. Hence, change pr_err() to
pr_err_ratelimited() in cm_destroy_id_wait_timeout().

Fixes: 96d9cbe2f2ff ("RDMA/cm: add timeout to cm_destroy_id wait")
Signed-off-by: Håkon Bugge <haakon.bugge@...cle.com>
---
 drivers/infiniband/core/cm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 92678e438ff4d..01bede8ba1055 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -1049,8 +1049,8 @@ static noinline void cm_destroy_id_wait_timeout(struct ib_cm_id *cm_id,
 	struct cm_id_private *cm_id_priv;
 
 	cm_id_priv = container_of(cm_id, struct cm_id_private, id);
-	pr_err("%s: cm_id=%p timed out. state %d -> %d, refcnt=%d\n", __func__,
-	       cm_id, old_state, cm_id->state, refcount_read(&cm_id_priv->refcount));
+	pr_err_ratelimited("%s: cm_id=%p timed out. state %d -> %d, refcnt=%d\n", __func__,
+			   cm_id, old_state, cm_id->state, refcount_read(&cm_id_priv->refcount));
 }
 
 static void cm_destroy_id(struct ib_cm_id *cm_id, int err)
-- 
2.43.5