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From: Jakub Kicinski <kuba@kernel.org>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com,
	andrew+netdev@lunn.ch, horms@kernel.org,
	maxime.chevallier@bootlin.com, danieller@nvidia.com,
	petrm@nvidia.com, o.rempel@pengutronix.de, idosch@nvidia.com,
	Jakub Kicinski <kuba@kernel.org>,
	andrew@lunn.ch
Subject: [PATCH net 4/9] ethtool: module: check fw_flash_in_progress under rtnl_lock
Date: Fri, 22 May 2026 16:13:07 -0700	[thread overview]
Message-ID: <20260522231312.1710836-5-kuba@kernel.org> (raw)
In-Reply-To: <20260522231312.1710836-1-kuba@kernel.org>

ethnl_set_module_validate() inspects module_fw_flash_in_progress
but validate is meant for _input_ validation, not state validation.
rtnl_lock is not held, yet. Move the check into ethnl_set_module().

Fixes: 32b4c8b53ee7 ("ethtool: Add ability to flash transceiver modules' firmware")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: andrew@lunn.ch
CC: petrm@nvidia.com
CC: danieller@nvidia.com
---
 net/ethtool/module.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/ethtool/module.c b/net/ethtool/module.c
index cdb85e19a23b..5b49004ddf60 100644
--- a/net/ethtool/module.c
+++ b/net/ethtool/module.c
@@ -120,12 +120,6 @@ ethnl_set_module_validate(struct ethnl_req_info *req_info,
 	if (!tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY])
 		return 0;
 
-	if (req_info->dev->ethtool->module_fw_flash_in_progress) {
-		NL_SET_ERR_MSG(info->extack,
-			       "Module firmware flashing is in progress");
-		return -EBUSY;
-	}
-
 	if (!ops->get_module_power_mode || !ops->set_module_power_mode) {
 		NL_SET_ERR_MSG_ATTR(info->extack,
 				    tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY],
@@ -148,6 +142,12 @@ ethnl_set_module(struct ethnl_req_info *req_info, struct genl_info *info)
 
 	ops = dev->ethtool_ops;
 
+	if (dev->ethtool->module_fw_flash_in_progress) {
+		NL_SET_ERR_MSG(info->extack,
+			       "Module firmware flashing is in progress");
+		return -EBUSY;
+	}
+
 	power_new.policy = nla_get_u8(tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY]);
 	ret = ops->get_module_power_mode(dev, &power, info->extack);
 	if (ret < 0)
-- 
2.54.0


  parent reply	other threads:[~2026-05-22 23:13 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-22 23:13 [PATCH net 0/9] ethtool: module: fix a handful of small bugs Jakub Kicinski
2026-05-22 23:13 ` [PATCH net 1/9] ethtool: module: call ethnl_ops_complete() on module flash errors Jakub Kicinski
2026-05-22 23:13 ` [PATCH net 2/9] ethtool: module: avoid leaking a netdev ref " Jakub Kicinski
2026-05-22 23:13 ` [PATCH net 3/9] ethtool: module: avoid racy updates to dev->ethtool bitfield Jakub Kicinski
2026-05-22 23:13 ` Jakub Kicinski [this message]
2026-05-22 23:13 ` [PATCH net 5/9] ethtool: module: fix cleanup if socket used for flashing multiple devices Jakub Kicinski
2026-05-22 23:13 ` [PATCH net 6/9] ethtool: cmis: require exact CDB reply length Jakub Kicinski
2026-05-22 23:13 ` [PATCH net 7/9] ethtool: cmis: fix u16-to-u8 truncation of msleep_pre_rpl Jakub Kicinski
2026-05-22 23:13 ` [PATCH net 8/9] ethtool: cmis: validate start_cmd_payload_size from module Jakub Kicinski
2026-05-22 23:13 ` [PATCH net 9/9] ethtool: cmis: validate fw->size against start_cmd_payload_size Jakub Kicinski

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