From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58396CA0EEB for ; Thu, 21 Aug 2025 10:26:11 +0000 (UTC) Received: from mx.denx.de (mx.denx.de [89.58.32.78]) by mx.groups.io with SMTP id smtpd.web11.6050.1755771961484419500 for ; Thu, 21 Aug 2025 03:26:01 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@denx.de header.s=mx-20241105 header.b=IgBkvMHj; spf=pass (domain: denx.de, ip: 89.58.32.78, mailfrom: pavel@denx.de) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id AE470103F5651; Thu, 21 Aug 2025 12:25:53 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=mx-20241105; t=1755771958; h=from:subject:date:message-id:to:cc:mime-version:content-type: in-reply-to:references; bh=OsWiSGPzO8+BCula2E637x9h1oWFgfxFcqp2Pff51n0=; b=IgBkvMHjQ4apTSQ/4y5j8CWgiUo8E7QMw/gTJynqSMMqRlcFFgZGujYnSTdE3bar5/IIDl Cvfj7tDUw5Er75+E/X0ciSnziMQSZtOWmwfJNN0ZLKHocEqnJtRiIaWPiCz2KtMMyx9QC7 eYcvmS+ecJRz8VymI1xa6H+FvmlcajiaLqom7WJtxVDhWtUIhhhGcmiFNoA7RGpsQ78Dme D5oHn6kBTyIDuIVPPPbbjd3Crf/RrONr3oisukQRtgfuqKkMX6TAxz31wNIWhbRMtXo2Xk pwehXzucwviBf/IBoQvea9vNs1SC0CHFZ96+A1NuUk63REWawL0MKTNG6dxewA== Date: Thu, 21 Aug 2025 12:25:51 +0200 From: Pavel Machek To: prabhakar.mahadev-lad.rj@bp.renesas.com Cc: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Ulrich Hecht , Biju Das Subject: Re: [cip-dev] [PATCH 4.4.y-cip] usb: renesas_usbhs: Flush the notify_hotplug_work Message-ID: References: <20250820140553.4730-1-prabhakar.mahadev-lad.rj@bp.renesas.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="urw5/jTwViPeT+c/" Content-Disposition: inline In-Reply-To: <20250820140553.4730-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Last-TLS-Session-Version: TLSv1.3 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Thu, 21 Aug 2025 10:26:11 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/19930 --urw5/jTwViPeT+c/ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed 2025-08-20 15:05:53, Lad Prabhakar via lists.cip-project.org wrote: > From: Claudiu Beznea >=20 > commit 552ca6b87e3778f3dd5b87842f95138162e16c82 upstream. >=20 > When performing continuous unbind/bind operations on the USB drivers > available on the Renesas RZ/G2L SoC, a kernel crash with the message > "Unable to handle kernel NULL pointer dereference at virtual address" > may occur. This issue points to the usbhsc_notify_hotplug() function. >=20 > Flush the delayed work to avoid its execution when driver resources are > unavailable. Reviewed-by: Pavel Machek Pavel --=20 In cooperation with DENX Software Engineering GmbH, HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany --urw5/jTwViPeT+c/ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCaKb0LwAKCRAw5/Bqldv6 8qItAJ9NFSCTTsfqo9JzhUUbYAcDYI3jtgCfSdOL74ZueCSc1oYR0GvB0S2MRWg= =ufmq -----END PGP SIGNATURE----- --urw5/jTwViPeT+c/--