From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0FE5B175D39; Wed, 25 Sep 2024 11:37:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727264233; cv=none; b=RFTfgds+latD5fo+jy4qPukkrrwZu5+aOnZ+ESGj2Qhp1nKv8WAah52ia5nkRkFc41dYnR8yntEtd6+D449AS2GVzf0fi6j/AuM3D/2StJ8kUELLXNDnGwHnOOvOHEuRnD4Sa8i4KqjRt5/RkhkifFWXN1hc6cllv/f1MTSKhr8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727264233; c=relaxed/simple; bh=VznNeOfa9mAiXck3yvozKYyOsh5qI3c5igMK/gXNY3k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kU8swH1ikDxZmd+4S3ePXwL6Q5/M1NS488RpruD/KO8bV9E8VdY3Ygx8O2eaEYDlP0Hr4AA1UYQf/5bl9tEiVf4olfd4CwhO6LJ4tEVnVWXBuEouXuDRBIzJr6BYN15FxebJdF/h4f7TIWtJiED8z3zJCn5GtyLah/xIPsm5ql0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a1t4jkxi; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="a1t4jkxi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 08475C4CEC3; Wed, 25 Sep 2024 11:37:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727264232; bh=VznNeOfa9mAiXck3yvozKYyOsh5qI3c5igMK/gXNY3k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a1t4jkxi+ONfyfCzrd9vZ4Oefmbk6/7hsjcdglrR3dlFg80m5gkf0hIfkaUBSHTcF EUMls3gspIhVsAvMMj/6bHSBPM/DETSmsGlpFo3bZDq8SDbFRVn6pXPo+NYqfCkDum eNBNU3oc/191qJmrReb5HdB/9j50fz5hZIDNa97wJp0BVfXyDc37U8cudnabHhSv+T ISIC9nAtPTInc6Na5tv29QfkZswqpctp0ofcqLo9mZ04tXLXFxEWIa7wfpA6NqiBPN VTY29Qs8KAzixi0VaSlIAK+vplfzeHYyDXFvKFGecJGyGPixGH753Z2zkH4kDX4Kwp XhRS0roxkoyhg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Issam Hamdi , Kretschmer Mathias , Johannes Berg , Sasha Levin , johannes@sipsolutions.net, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 6.11 012/244] wifi: cfg80211: Set correct chandef when starting CAC Date: Wed, 25 Sep 2024 07:23:53 -0400 Message-ID: <20240925113641.1297102-12-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240925113641.1297102-1-sashal@kernel.org> References: <20240925113641.1297102-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.11 Content-Transfer-Encoding: 8bit From: Issam Hamdi [ Upstream commit 20361712880396e44ce80aaeec2d93d182035651 ] When starting CAC in a mode other than AP mode, it return a "WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]" caused by the chandef.chan being null at the end of CAC. Solution: Ensure the channel definition is set for the different modes when starting CAC to avoid getting a NULL 'chan' at the end of CAC. Call Trace: ? show_regs.part.0+0x14/0x16 ? __warn+0x67/0xc0 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? report_bug+0xa7/0x130 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x50 ? exc_invalid_op+0x18/0x60 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] ? process_one_work+0x165/0x280 ? worker_thread+0x120/0x3f0 ? kthread+0xc2/0xf0 ? process_one_work+0x280/0x280 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x19/0x24 Reported-by: Kretschmer Mathias Signed-off-by: Issam Hamdi Link: https://patch.msgid.link/20240816142418.3381951-1-ih@simonwunderlich.de [shorten subject, remove OCB, reorder cases to match previous list] Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/wireless/nl80211.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7397a372c78eb..b368e23847ddb 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -10143,7 +10143,20 @@ static int nl80211_start_radar_detection(struct sk_buff *skb, err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); if (!err) { - wdev->links[0].ap.chandef = chandef; + switch (wdev->iftype) { + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_P2P_GO: + wdev->links[0].ap.chandef = chandef; + break; + case NL80211_IFTYPE_ADHOC: + wdev->u.ibss.chandef = chandef; + break; + case NL80211_IFTYPE_MESH_POINT: + wdev->u.mesh.chandef = chandef; + break; + default: + break; + } wdev->cac_started = true; wdev->cac_start_time = jiffies; wdev->cac_time_ms = cac_time_ms; -- 2.43.0