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From: David Yang <mmyangfl@gmail.com>
To: netdev@vger.kernel.org
Cc: David Yang <mmyangfl@gmail.com>,
	MD Danish Anwar <danishanwar@ti.com>,
	Parvathi Pudi <parvathi@couthit.com>,
	Roger Quadros <rogerq@kernel.org>,
	Mohan Reddy Putluru <pmohan@couthit.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@kernel.org>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Jacob Keller <jacob.e.keller@intel.com>,
	Stanislav Fomichev <sdf@fomichev.me>,
	Nicolai Buchwitz <nb@tipi-net.de>,
	Maxime Chevallier <maxime.chevallier@bootlin.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net 09/10] net: ti: icssm-prueth: Move setting of netops to fix crash
Date: Thu,  8 Oct 2026 10:26:51 +0800	[thread overview]
Message-ID: <20261008022656.3592191-10-mmyangfl@gmail.com> (raw)
In-Reply-To: <20261008022656.3592191-1-mmyangfl@gmail.com>

icssm_prueth_netdev_init() calls of_phy_get_and_connect() before
ndev->netdev_ops is assigned. phy_attach_direct() ->
phy_link_topo_add_phy() reads dev->netdev_ops through
netdev_need_ops_lock() since the commit in question, so probing crashes
with a NULL pointer dereference when CONFIG_NET_SHAPER is enabled.

Assign netdev_ops before the PHY attach, as was done for emac in commit
7c9f391ec89c ("net: emac: move setting of netops to fix crash").

Fixes: ded86da4bbb7 ("net: ethtool: relax ethnl_req_get_phydev() locking assertion")
Signed-off-by: David Yang <mmyangfl@gmail.com>
---
 drivers/net/ethernet/ti/icssm/icssm_prueth.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/icssm/icssm_prueth.c b/drivers/net/ethernet/ti/icssm/icssm_prueth.c
index b7e94244355a..b42c98e861e0 100644
--- a/drivers/net/ethernet/ti/icssm/icssm_prueth.c
+++ b/drivers/net/ethernet/ti/icssm/icssm_prueth.c
@@ -1563,6 +1563,8 @@ static int icssm_prueth_netdev_init(struct prueth *prueth,
 	}
 	ether_addr_copy(emac->mac_addr, ndev->dev_addr);
 
+	ndev->netdev_ops = &emac_netdev_ops;
+
 	/* connect PHY */
 	emac->phydev = of_phy_get_and_connect(ndev, eth_node,
 					      icssm_emac_adjust_link);
@@ -1590,7 +1592,6 @@ static int icssm_prueth_netdev_init(struct prueth *prueth,
 	}
 
 	ndev->dev.of_node = eth_node;
-	ndev->netdev_ops = &emac_netdev_ops;
 
 	netif_napi_add(ndev, &emac->napi, icssm_emac_napi_poll);
 
-- 
2.53.0


  parent reply	other threads:[~2026-10-08  2:29 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-08  2:26 [PATCH net 00/10] net: " David Yang
2026-10-08  2:26 ` [PATCH net 01/10] net: hisilicon: hisi_femac: " David Yang
2026-10-08 11:51   ` Jijie Shao
2026-10-08  2:26 ` [PATCH net 02/10] net: hisilicon: hip04_eth: " David Yang
2026-10-08  8:30   ` Maxime Chevallier
2026-10-08  2:26 ` [PATCH net 03/10] net: ethernet: actions: " David Yang
2026-10-08  2:26 ` [PATCH net 04/10] net: ethernet: adi: " David Yang
2026-10-08  2:26 ` [PATCH net 05/10] net: mv643xx: move " David Yang
2026-10-08  2:26 ` [PATCH net 06/10] net: au1000: " David Yang
2026-10-08  8:31   ` Maxime Chevallier
2026-10-08  2:26 ` [PATCH net 07/10] net: ethoc: " David Yang
2026-10-08  2:26 ` [PATCH net 08/10] net: ethernet: aeroflex: " David Yang
2026-10-08  2:26 ` David Yang [this message]
2026-10-08  2:26 ` [PATCH net 10/10] microchip: lan865x: " David Yang
2026-10-08  8:32   ` Maxime Chevallier
2026-10-08 12:10 ` [PATCH net 00/10] net: Move " Jijie Shao

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