linux-kernel - Re: [PATCH] wifi: ath12k: fix soft lockup on suspend

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <10b11116-0523-4035-94d8-af244c96ed5d@quicinc.com>
Date: Tue, 9 Jul 2024 07:17:46 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Johan Hovold <johan+linaro@...nel.org>, Kalle Valo <kvalo@...nel.org>,
        Jeff Johnson <jjohnson@...nel.org>
CC: Bhagavathi Perumal S <quic_bperumal@...cinc.com>,
        "Vasanthakumar
 Thiagarajan" <quic_vthiagar@...cinc.com>,
        Karthikeyan Periyasamy
	<quic_periyasa@...cinc.com>,
        Wen Gong <quic_wgong@...cinc.com>, <ath12k@...ts.infradead.org>,
        <linux-wireless@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <stable@...r.kernel.org>
Subject: Re: [PATCH] wifi: ath12k: fix soft lockup on suspend

On 7/9/2024 12:31 AM, Johan Hovold wrote:
> The ext interrupts are enabled when the firmware has been started, but
> this may never happen, for example, if the board configuration file is
> missing.
> 
> When the system is later suspended, the driver unconditionally tries to
> disable interrupts, which results in an irq disable imbalance and causes
> the driver to spin indefinitely in napi_synchronize().
> 
> Make sure that the interrupts have been enabled before attempting to
> disable them.
> 
> Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
> Cc: stable@...r.kernel.org	# 6.3
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
Acked-by: Jeff Johnson <quic_jjohnson@...cinc.com>