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 CCEC030E84A; Tue, 10 Mar 2026 07:17:40 +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=1773127060; cv=none; b=t+0N0v4ii52jduFDHZbsPwRqYGoAgzfrBPxzB+dp08/cw4Q+Pkt8bSQelAQfiB1D5f1YuuV+ySnyjMWWDfXxVDU0IdWOZxK2u2flfLLxL+XxRdjj7GycVrP8j3kpI9sjnHsPikg8Cl4LZIfEXyB/Kow7Q9L0wWdLodYcqoRSHO0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773127060; c=relaxed/simple; bh=YR67FII1wUW6wza3jK87tfkyl0AS+Md4zn1jqcdqyNg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=haI0T4CvTB+ynP9uxLMWW4A0E3k8qC8tJ2zUyBocsjoPBRKDUHvZ0fhsRtvpacO54rekd+erZk4H+EIBLKOKKOafSevGwcnkhx1Ki1ztfO6B0KnwH7xa/TS8ccU2yZ+5PG2YR+8Csuhk/BraZJNJrC97WdYcE66KqINiAXGPJ3I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bFttBG44; 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="bFttBG44" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 20F1CC19423; Tue, 10 Mar 2026 07:17:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773127060; bh=YR67FII1wUW6wza3jK87tfkyl0AS+Md4zn1jqcdqyNg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=bFttBG44GJ4qvIoPpnNJ1fBiAtytXbYe7DR6e3t6MW4U6fSkEEtGvAB7tjrgVYzsu PIdt7+OftS30y07WsDRrz/Re8s0hB7TjHqJ6EPKcBN4DpFCkOSgCLRf1+UEU4PoXjl VntFcqFhXGjC31lEKRxsBK9er7vCEMf5CAmo2IXdi250aQ4YZ7d9eYwmPGsJXb1Wjz Xu7vBozC44OCnU8L/EaVraYlMuRo7wFURbVO+X7nWyQdjiMj182VNW3ieByjmVUW32 2Tz3Zvy6+GsOUu+s3a0fWaLQ6Mnz7457Bf8aJ2RRg1VZcPntOVqVRfCH+TNKWiOfQ9 LtRIdu7vDvDMg== Message-ID: Date: Tue, 10 Mar 2026 08:17:37 +0100 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] serial: 8250: Fix null ptr deref has_acpi_companion To: Filip Jensen , gregkh@linuxfoundation.org, ilpo.jarvinen@linux.intel.com Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Jose Javier Rodriguez Barbarin References: <20260309142836.95514-1-dev-Felipe.Jensen@duagon.com> Content-Language: en-US From: Jiri Slaby Autocrypt: addr=jirislaby@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit The subject is not a proper English though :). Esp. the missing preposition. And parens. What about: serial: 8250: Fix NULL pointer dereference in has_acpi_companion() ? On 09. 03. 26, 15:28, Filip Jensen wrote: ... > --- a/drivers/tty/serial/8250/8250_core.c > +++ b/drivers/tty/serial/8250/8250_core.c > @@ -756,6 +756,8 @@ int serial8250_register_8250_port(const struct uart_8250_port *up) > if (ret) > goto err; > } > + if (!uart->port.dev) > + return -EINVAL; Does this even compile? thanks, -- js suse labs