netdev - [PATCH net-next 04/10] devlink: health: Don't try to add trace with NULL msg

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Date:   Mon, 13 Feb 2023 15:14:12 +0200
From:   Moshe Shemesh <moshe@...dia.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, Jiri Pirko <jiri@...dia.com>,
        <netdev@...r.kernel.org>
CC:     Moshe Shemesh <moshe@...dia.com>
Subject: [PATCH net-next 04/10] devlink: health: Don't try to add trace with NULL msg

In case devlink_health_report() msg argument is NULL a warning is
triggered, but then continue and try to print a trace with NULL pointer.

Fix it to skip trace call if msg pointer is NULL.

Signed-off-by: Moshe Shemesh <moshe@...dia.com>
---
 net/devlink/leftover.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index 0b1c5e0122f3..bc72d80141cf 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -6077,8 +6077,8 @@ int devlink_health_report(struct devlink_health_reporter *reporter,
 	int ret;
 
 	/* write a log message of the current error */
-	WARN_ON(!msg);
-	trace_devlink_health_report(devlink, reporter->ops->name, msg);
+	if (!WARN_ON(!msg))
+		trace_devlink_health_report(devlink, reporter->ops->name, msg);
 	reporter->error_count++;
 	prev_health_state = reporter->health_state;
 	reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
-- 
2.27.0