From nobody Sun Feb 8 05:30:19 2026 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 E85EF399A7C; Wed, 14 Jan 2026 12:42:39 +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=1768394565; cv=none; b=O3BzngGNcP1nWOSCFkIPcEkAWIev7Fi7thdhSTTGZyCOYSzx9DtxtAv1uKW3Rdjl1ZtmUmcI8lrg7I6XfsWOWOE5w1xhrcsuI2XgDBYg4ZuFbNYX180edkpNN9yldxk2wck0xVVvDdauWHvAN6J4/JEAJKaQGs2rmyzrZS3sEBU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768394565; c=relaxed/simple; bh=pqTJKSvmin0/eVC2ZWUh5TfpC+sGVjEpxxCohWBBG4I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rHChZUcnIG7krRBt767I/9Aj7Al1cNcpQjIk8cHmWaofms2lyPzHP4QDePcUOgh7O5WspxHVQQ0z470uw9qwE/cObPS5jkCQ5QDfmVeJqpfXLRsjgK8ykRLrNoAzcjxRCdAfNN5qLONdfjDAGzeyWnAhWys5GjCdrJpNeybIAQQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JSaH3dCD; 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="JSaH3dCD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91DEFC4CEF7; Wed, 14 Jan 2026 12:42:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768394559; bh=pqTJKSvmin0/eVC2ZWUh5TfpC+sGVjEpxxCohWBBG4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JSaH3dCDujXEojq7Qx1tnStKoETPSLyqjFx5NFnSbtcSAVhx8eVtB8VyGvHLzjdS8 rh9ieVWBG7PhUd6C397L1eP0m4O48Qx4cvC48yZ40ln11SzBhZg9cPWQeE+JejyRPs E9MZQMa2KqMsMlZP11YbIG4ihF2am83h1O5jd8zhF7J6ZtezykF1BdjZxmM8nzAUwr c20uHsmnUbxhgiVNEhAuphJjp5b11org/h/Qu6joNR5oEl7uiaPaU8cBSwt0etsmMg 9RrmBD9YgC6JhWD5QQtLeklLSwTri3DWNqlR2qY8BGNNM79K1HooTzZcS5IyuF7gKH U57t9vxQaPOHQ== From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , "Dumbre, Saket" Subject: [PATCH v1 05/26] ACPICA: Fix NULL pointer dereference in acpi_ev_address_space_dispatch() Date: Wed, 14 Jan 2026 13:20:17 +0100 Message-ID: <3030574.e9J7NaK4W3@rafael.j.wysocki> Organization: Linux Kernel Development In-Reply-To: <12822121.O9o76ZdvQC@rafael.j.wysocki> References: <12822121.O9o76ZdvQC@rafael.j.wysocki> 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" From: Alexey Simakov Cover a missed execution path with a new check. Fixes: 0acf24ad7e10 ("ACPICA: Add support for PCC Opregion special context = data") Link: https://github.com/acpica/acpica/commit/f421dd9dd897 Signed-off-by: Alexey Simakov Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/evregion.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index fa3475da7ea9..b6198f73c81d 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -163,7 +163,9 @@ acpi_ev_address_space_dispatch(union acpi_operand_objec= t *region_obj, return_ACPI_STATUS(AE_NOT_EXIST); } =20 - if (region_obj->region.space_id =3D=3D ACPI_ADR_SPACE_PLATFORM_COMM) { + if (field_obj + && region_obj->region.space_id =3D=3D + ACPI_ADR_SPACE_PLATFORM_COMM) { struct acpi_pcc_info *ctx =3D handler_desc->address_space.context; =20 --=20 2.51.0