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From: Ajay Kaher <ajay.kaher@broadcom.com>
To: stable@vger.kernel.org, gregkh@linuxfoundation.org
Cc: pv-drivers@vmware.com, davem@davemloft.net, edumazet@google.com,
	kuba@kernel.org, pabeni@redhat.com, ast@kernel.org,
	daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	bpf@vger.kernel.org, ajay.kaher@broadcom.com,
	alexey.makhalov@broadcom.com,
	sankararaman.jayaraman@broadcom.com, ronak.doshi@broadcom.com,
	florian.fainelli@broadcom.com,
	vamsi-krishna.brahmajosyula@broadcom.com,
	tapas.kundu@broadcom.com, Sasha Levin <sashal@kernel.org>
Subject: [PATCH v6.6-v6.12] vmxnet3: unregister xdp rxq info in the reset path
Date: Thu, 18 Sep 2025 12:37:32 +0000	[thread overview]
Message-ID: <20250918123732.502171-1-ajay.kaher@broadcom.com> (raw)

From: Sankararaman Jayaraman <sankararaman.jayaraman@broadcom.com>

[ Upstream commit 0dd765fae295832934bf28e45dd5a355e0891ed4 ]

vmxnet3 does not unregister xdp rxq info in the
vmxnet3_reset_work() code path as vmxnet3_rq_destroy()
is not invoked in this code path. So, we get below message with a
backtrace.

Missing unregister, handled but fix driver
WARNING: CPU:48 PID: 500 at net/core/xdp.c:182
__xdp_rxq_info_reg+0x93/0xf0

This patch fixes the problem by moving the unregister
code of XDP from vmxnet3_rq_destroy() to vmxnet3_rq_cleanup().

Fixes: 54f00cce1178 ("vmxnet3: Add XDP support.")
Signed-off-by: Sankararaman Jayaraman <sankararaman.jayaraman@broadcom.com>
Signed-off-by: Ronak Doshi <ronak.doshi@broadcom.com>
Link: https://patch.msgid.link/20250320045522.57892-1-sankararaman.jayaraman@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[Ajay: Modified to apply on v6.6, v6.12]
Signed-off-by: Ajay Kaher <ajay.kaher@broadcom.com>
---
 drivers/net/vmxnet3/vmxnet3_drv.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 6793fa09f9d1a..3df6aabc7e339 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -2033,6 +2033,11 @@ vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
 
 	rq->comp_ring.gen = VMXNET3_INIT_GEN;
 	rq->comp_ring.next2proc = 0;
+
+	if (xdp_rxq_info_is_reg(&rq->xdp_rxq))
+		xdp_rxq_info_unreg(&rq->xdp_rxq);
+	page_pool_destroy(rq->page_pool);
+	rq->page_pool = NULL;
 }
 
 
@@ -2073,11 +2078,6 @@ static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
 		}
 	}
 
-	if (xdp_rxq_info_is_reg(&rq->xdp_rxq))
-		xdp_rxq_info_unreg(&rq->xdp_rxq);
-	page_pool_destroy(rq->page_pool);
-	rq->page_pool = NULL;
-
 	if (rq->data_ring.base) {
 		dma_free_coherent(&adapter->pdev->dev,
 				  rq->rx_ring[0].size * rq->data_ring.desc_size,
-- 
2.39.5

                 reply	other threads:[~2025-09-18 12:51 UTC|newest]

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