linux-kernel - [PATCH 5.19 213/365] net: sched: fix misuse of qcpu->backlog in gnet_stats_add_queue

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Date:   Tue, 23 Aug 2022 10:01:54 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhengchao Shao <shaozhengchao@...wei.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.19 213/365] net: sched: fix misuse of qcpu->backlog in gnet_stats_add_queue_cpu

From: Zhengchao Shao <shaozhengchao@...wei.com>

commit de64b6b6fb6f369840d171b7c5a9baf31b8b2630 upstream.

In the gnet_stats_add_queue_cpu function, the qstats->qlen statistics
are incorrectly set to qcpu->backlog.

Fixes: 448e163f8b9b ("gen_stats: Add gnet_stats_add_queue()")
Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
Link: https://lore.kernel.org/r/20220815030848.276746-1-shaozhengchao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/core/gen_stats.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/core/gen_stats.c
+++ b/net/core/gen_stats.c
@@ -345,7 +345,7 @@ static void gnet_stats_add_queue_cpu(str
 	for_each_possible_cpu(i) {
 		const struct gnet_stats_queue *qcpu = per_cpu_ptr(q, i);
 
-		qstats->qlen += qcpu->backlog;
+		qstats->qlen += qcpu->qlen;
 		qstats->backlog += qcpu->backlog;
 		qstats->drops += qcpu->drops;
 		qstats->requeues += qcpu->requeues;