From nobody Sat Jul 25 20:06:02 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 10B9D3016F2; Tue, 14 Jul 2026 06:52:19 +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=1784011943; cv=none; b=LVxYoS+5nEydrCVOGZNN3CdsQY4pSKSzgHpxeSIZPVBsVoMptspZ/+x+BmG2lE9KREvSWBFot30A0ly49SmQ6fnuU3H7qcGo+d6QqAhUDLZkcKJWJRXElQREk3lreT/P9/NursfXMCCo9UxAn2N6z4EUQOqT6mz7eXDnQqMmBTk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784011943; c=relaxed/simple; bh=mObESLdVhIc3p+BlzqqdOK/qV6TzCDaX0MBcX31rsYM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=MknKgVpD0kfzrU02i8XK0kqRALC5JRBlOG1AMvYCCe3GEawgESib9Vs8iWZSMRr7ZcrmbM2JsrCOWOSznNRbaN+GFh4QbahQW+lmzHiS75xw8Ieb3xXg4vogMo2EOr/jnkA3qmdHvSdZbpuzR11ZDgXaOcRvAG0PP6v+v8N1LcU= 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: 8a0de56a7f5011f1aa26b74ffac11d73-20260714 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:8d0a273d-2292-4b6c-8087-02c72e2b5724,IP:0,U RL:0,TC:0,Content:-5,EDM:-25,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:-30 X-CID-META: VersionHash:e7bac3a,CLOUDID:9b7a537dae6fb400bfa5a90b1716bdb4,BulkI D:nil,BulkQuantity:0,Recheck:0,SF:102|850|865|898,TC:nil,Content:0|15|50,E DM:2,IP:nil,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA: 0,AV:0,LES: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: 8a0de56a7f5011f1aa26b74ffac11d73-20260714 X-User: yanlonglong@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 134102658; Tue, 14 Jul 2026 14:52:11 +0800 From: longlong yan To: mturquette@baylibre.com, sboyd@kernel.org, bmasney@redhat.com, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Cc: longlong yan Subject: [PATCH] clk/x86: pmc_atom: add kasprintf return value check Date: Tue, 14 Jul 2026 14:51:32 +0800 Message-ID: <20260714065133.487-1-yanlonglong@kylinos.cn> X-Mailer: git-send-email 2.47.1.windows.2 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" The kasprintf() function returns NULL on memory allocation failure, but the code in plt_clk_register() was not checking this return value. If kasprintf fails, init.name would be NULL and could cause NULL pointer dereference when clkdev_hw_create() uses it. Add proper error checking for the kasprintf() return value and return ERR_PTR(-ENOMEM) on failure. Fixes: 1141d9d08184 ("clk: x86: Add Atom PMC platform clocks") Signed-off-by: longlong yan Reviewed-by: Brian Masney --- drivers/clk/x86/clk-pmc-atom.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/x86/clk-pmc-atom.c b/drivers/clk/x86/clk-pmc-atom.c index 99291ba65da7..08c83e0abc41 100644 --- a/drivers/clk/x86/clk-pmc-atom.c +++ b/drivers/clk/x86/clk-pmc-atom.c @@ -160,6 +160,9 @@ static struct clk_plt *plt_clk_register(struct platform= _device *pdev, int id, return ERR_PTR(-ENOMEM); =20 init.name =3D kasprintf(GFP_KERNEL, "%s_%d", PLT_CLK_NAME_BASE, id); + if (!init.name) + return ERR_PTR(-ENOMEM); + init.ops =3D &plt_clk_ops; init.flags =3D 0; init.parent_names =3D parent_names; --=20 2.43.0