From nobody Mon Sep 28 08:47:22 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 B48AD40EBA8; Mon, 24 Aug 2026 12:52:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787575945; cv=none; b=Pcv3Rj8KftwAmq+UgUPIHE/R77fwvYFW217k7YMKxWNsrQWR/QWr5WCkTe9NeM147z9t5C4qjWttzQJSFru7lCi5iTew3DYUOIktrumRbwMaBtRT9+rpm6UKK4vML6u6oOoL7pp7p6sjh30brGv4WneFjFGacpCnKtpj0JgFTcE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787575945; c=relaxed/simple; bh=RHfBJQvUmRRrjA4Sl3o6osk1PrMdBZxJVzxqJOVnliU=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=O9IujCaVQ4oTHBgY8jtdssYkyS36A6i4uS7DugqFiPw7fylGENlyI6DUFmRaup8DUzp/UMdpRBbJuI4zPrXODTXhXObS8beTF48vizPqcJtW9e6Syw+3EQSPwjJvDLay0DvFYSuWreBLHsOCJB5t95tDeDXnMCm8tNkm8NFFEGA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: a2879dfe9fba11f19a56ed5b684f684d-20260824 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.19,REQID:1ca0a853-6c81-41b5-a108-06a015ade9f0,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:7db8b62,CLOUDID:6073d24401ac398f1b2b2f87925aa8e0,BulkI D:nil,BulkQuantity:0,SF:102|850|865|898,TC:nil,Content:0|15|50,EDM:-3,IP:n il,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LE S:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: a2879dfe9fba11f19a56ed5b684f684d-20260824 X-User: lilinmao@kylinos.cn Received: from localhost.localdomain [(10.44.16.150)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 90146487; Mon, 24 Aug 2026 20:52:16 +0800 From: Linmao Li To: Jonathan Cameron Cc: Antoniu Miclaus , =?UTF-8?q?Nuno=20S=C3=A1?= , David Lechner , Andy Shevchenko , linux@analog.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Linmao Li , stable@vger.kernel.org Subject: [PATCH] iio: adc: ade9000: fix NULL pointer dereference in clkout registration Date: Mon, 24 Aug 2026 20:52:10 +0800 Message-Id: <20260824125210.1644319-1-lilinmao@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" ade9000_setup_clkout() passes NULL as the register address when registering a divider clock. During clock registration, the common clock framework calls clk_divider_recalc_rate(), which dereferences the address through readl(). As a result, probing an ADE9000 configured as a clock provider with an external input clock crashes. CLKOUT passes CLKIN through without changing its rate. Register it as a 1:1 fixed-factor clock, which does not require register access. Fixes: 81de7b4619fc ("iio: adc: add ade9000 support") Cc: stable@vger.kernel.org Signed-off-by: Linmao Li --- drivers/iio/adc/ade9000.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ade9000.c b/drivers/iio/adc/ade9000.c index e57e24b6acdf7..4e96cc37fbedf 100644 --- a/drivers/iio/adc/ade9000.c +++ b/drivers/iio/adc/ade9000.c @@ -1647,8 +1647,9 @@ static int ade9000_setup_clkout(struct device *dev, s= truct ade9000_state *st) return 0; =20 /* CLKOUT passes through CLKIN with divider of 1 */ - clkout_hw =3D devm_clk_hw_register_divider(dev, "clkout", __clk_get_name(= st->clkin), - CLK_SET_RATE_PARENT, NULL, 0, 1, 0, NULL); + clkout_hw =3D devm_clk_hw_register_fixed_factor(dev, "clkout", + __clk_get_name(st->clkin), + CLK_SET_RATE_PARENT, 1, 1); if (IS_ERR(clkout_hw)) return dev_err_probe(dev, PTR_ERR(clkout_hw), "Failed to register clkout= "); =20 base-commit: 6b9f23b5460818aaf199dda90210d5fc08d66c8f --=20 2.25.1