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Date:   Tue, 10 Aug 2021 19:29:37 +0200
From:   Greg Kroah-Hartman <>
Cc:     Greg Kroah-Hartman <>,, Yunsheng Lin <>,
        "David S. Miller" <>,
        Sasha Levin <>
Subject: [PATCH 5.10 043/135] net: sched: fix lockdep_set_class() typo error for sch->seqlock

From: Yunsheng Lin <>

[ Upstream commit 06f5553e0f0c2182268179b93856187d9cb86dd5 ]

According to comment in qdisc_alloc(), sch->seqlock's lockdep
class key should be set to qdisc_tx_busylock, due to possible
type error, sch->busylock's lockdep class key is set to
qdisc_tx_busylock, which is duplicated because sch->busylock's
lockdep class key is already set in qdisc_alloc().

So fix it by replacing sch->busylock with sch->seqlock.

Fixes: 96009c7d500e ("sched: replace __QDISC_STATE_RUNNING bit with a spin lock")
Signed-off-by: Yunsheng Lin <>
Signed-off-by: David S. Miller <>
Signed-off-by: Sasha Levin <>
 net/sched/sch_generic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 854d2b38db85..05aa2571a409 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -886,7 +886,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
 	/* seqlock has the same scope of busylock, for NOLOCK qdisc */
-	lockdep_set_class(&sch->busylock,
+	lockdep_set_class(&sch->seqlock,
 			  dev->qdisc_tx_busylock ?: &qdisc_tx_busylock);

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