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From: Ivan Abramov <i.abramov@mt-integration.ru>
To: Alexander Aring <alex.aring@gmail.com>
Cc: Ivan Abramov <i.abramov@mt-integration.ru>,
	Stefan Schmidt <stefan@datenfreihafen.org>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Simon Horman <horms@kernel.org>, <linux-wpan@vger.kernel.org>,
	<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<lvc-project@linuxtesting.org>
Subject: [PATCH 3/3] ieee802154: Remove WARN_ON() in cfg802154_pernet_exit()
Date: Fri, 28 Mar 2025 04:04:27 +0300	[thread overview]
Message-ID: <20250328010427.735657-4-i.abramov@mt-integration.ru> (raw)
In-Reply-To: <20250328010427.735657-1-i.abramov@mt-integration.ru>

There's no need to call WARN_ON() in cfg802154_pernet_exit(), since
every point of failure in cfg802154_switch_netns() is covered with
WARN_ON(), so remove it.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: 66e5c2672cd1 ("ieee802154: add netns support")
Signed-off-by: Ivan Abramov <i.abramov@mt-integration.ru>
---
 net/ieee802154/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ieee802154/core.c b/net/ieee802154/core.c
index 8c47957f5df7..274112ff2955 100644
--- a/net/ieee802154/core.c
+++ b/net/ieee802154/core.c
@@ -358,7 +358,7 @@ static void __net_exit cfg802154_pernet_exit(struct net *net)
 	rtnl_lock();
 	list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 		if (net_eq(wpan_phy_net(&rdev->wpan_phy), net))
-			WARN_ON(cfg802154_switch_netns(rdev, &init_net));
+			cfg802154_switch_netns(rdev, &init_net);
 	}
 	rtnl_unlock();
 }
-- 
2.39.5


  parent reply	other threads:[~2025-03-28  1:10 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-28  1:04 [PATCH 0/3] Avoid calling WARN_ON() on allocation failure in cfg802154_switch_netns() Ivan Abramov
2025-03-28  1:04 ` [PATCH 1/3] ieee802154: Restore initial state on failed device_rename() " Ivan Abramov
2025-03-28  1:04 ` [PATCH 2/3] ieee802154: Avoid calling WARN_ON() on -ENOMEM " Ivan Abramov
2025-03-28  2:30   ` Kuniyuki Iwashima
2025-03-31  9:40     ` Ivan Abramov
2025-03-28  1:04 ` Ivan Abramov [this message]
2025-03-28  2:35 ` [PATCH 0/3] Avoid calling WARN_ON() on allocation failure " Kuniyuki Iwashima
2025-03-28  8:29 ` Miquel Raynal

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