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 9FF3F283FC9; Wed, 25 Feb 2026 01:42:25 +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=1771983745; cv=none; b=V7zhsQruiDH/m2kqlwThkhoMCBy5QX2PDa1EOk7TRI1GcmFsrIy3w5PdFpvTtdDt2Ub2vMp7KLpjD9FDdHLMBvdpL3U05F7i5mMpq8BEpVHEbwuawIyDHsMlxTRpddSKehoDV8wUVTZTdBumO6buPFK4DlG0rzypjhI+pbX5i2s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771983745; c=relaxed/simple; bh=eUwJozb/7vFlPv3KFbdoX61B7NzeWNOAxxd5MEoZfng=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mfzXdCqzBmmi3MA6EqIDiR2N81PqlSr1XGPpHPafvaLGaxhpqCCiYjato5nQl1B8gHascDONtE6QwggmKkKJ2z4VxWXurK3ecF2oPbpYCV5ulGz6OWbQz72++xZtSr+kyEb3HwBH/U/f/IR7/G2WNvdizGU7ZpRgsw8HyYS5eZk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VEz7KxBj; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="VEz7KxBj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A942C116D0; Wed, 25 Feb 2026 01:42:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1771983745; bh=eUwJozb/7vFlPv3KFbdoX61B7NzeWNOAxxd5MEoZfng=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VEz7KxBjcHZ5vscsC5/AsX3uWadtMRQaIrsQVTqrOi4aGsdJeggnGw0M8JRrra6kR CY9rncuCfqsd1ohUxErbtqXvQxFdj3FcvpJp/QmvzjJAD5t3WpalRqE610XHJVc1gj ucTSUh29ntKW87oHFkVfGSNOMpE1tAnqLDWlSk9k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexey Simakov , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 6.18 038/641] ACPICA: Fix NULL pointer dereference in acpi_ev_address_space_dispatch() Date: Tue, 24 Feb 2026 17:16:04 -0800 Message-ID: <20260225012349.941435825@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260225012348.915798704@linuxfoundation.org> References: <20260225012348.915798704@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexey Simakov [ Upstream commit f851e03bce968ff9b3faad1b616062e1244fd38d ] 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 Link: https://patch.msgid.link/3030574.e9J7NaK4W3@rafael.j.wysocki Signed-off-by: Sasha Levin --- 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 fa3475da7ea9b..b6198f73c81df 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_object *region_obj, return_ACPI_STATUS(AE_NOT_EXIST); } - if (region_obj->region.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) { + if (field_obj + && region_obj->region.space_id == + ACPI_ADR_SPACE_PLATFORM_COMM) { struct acpi_pcc_info *ctx = handler_desc->address_space.context; -- 2.51.0