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 3C2347E110; Tue, 11 Mar 2025 15:16:42 +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=1741706202; cv=none; b=VUUsJpw6reaAWQMEF8x6nPNZ5oUK+saP7mYXC1dF1wOuUVtiBFyTc+8jXOxTLOadWw2XzZevgWRVsormsoNZycM6XvTa3/zDaZ1upooZCJd66KTKL564wcz66BgACcMTAp6rBdkDg7g8bNCiBmtZqa8CyIYd/GX+w3aOrCA7OvE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741706202; c=relaxed/simple; bh=BHuHcowgLtJNbHlGjIbna8/USrirFUwhQ/b9EbZFdVk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uMjGjXRrUTejLHcg7UkWLFcO5LVm9MpjwLnSYpHQsAhsqZQ61PfKTrBYFVe8SH+Qd95sPufLt8BSXc5mK1gOsj88TxHHoZUSh0yXAtfWA0iF2EMQqWjXmpvuRpha8zMP22aw3ZtEcfD7ln7k9nZq27O14GTkRYiwd/5V8xP58q4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HiNocJIp; 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="HiNocJIp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B9DB3C4CEE9; Tue, 11 Mar 2025 15:16:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741706202; bh=BHuHcowgLtJNbHlGjIbna8/USrirFUwhQ/b9EbZFdVk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HiNocJIpAQnXlky0XF97vNBHb8oskMP7thRP5TZTrsr1pJsIu7yPJ2/PHDZ7FvJp2 tznACW8IdhrAxpYAyib2gqXK7JrGtyVZ+pX+gy1/8yxEMrELYyBE/bJHHkTQ8Ji7WH AdmzLuFJPj2M73dNhq6x2uugJds6xxBWNcVkweME= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Vitaliy Shevtsov , Gerhard Engleder , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.4 297/328] caif_virtio: fix wrong pointer check in cfv_probe() Date: Tue, 11 Mar 2025 16:01:07 +0100 Message-ID: <20250311145726.710220291@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250311145714.865727435@linuxfoundation.org> References: <20250311145714.865727435@linuxfoundation.org> User-Agent: quilt/0.68 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 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vitaliy Shevtsov [ Upstream commit a466fd7e9fafd975949e5945e2f70c33a94b1a70 ] del_vqs() frees virtqueues, therefore cfv->vq_tx pointer should be checked for NULL before calling it, not cfv->vdev. Also the current implementation is redundant because the pointer cfv->vdev is dereferenced before it is checked for NULL. Fix this by checking cfv->vq_tx for NULL instead of cfv->vdev before calling del_vqs(). Fixes: 0d2e1a2926b1 ("caif_virtio: Introduce caif over virtio") Signed-off-by: Vitaliy Shevtsov Reviewed-by: Gerhard Engleder Link: https://patch.msgid.link/20250227184716.4715-1-v.shevtsov@mt-integration.ru Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/caif/caif_virtio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/caif/caif_virtio.c b/drivers/net/caif/caif_virtio.c index 7f2c551e5d690..41c096c2af5bd 100644 --- a/drivers/net/caif/caif_virtio.c +++ b/drivers/net/caif/caif_virtio.c @@ -746,7 +746,7 @@ static int cfv_probe(struct virtio_device *vdev) if (cfv->vr_rx) vdev->vringh_config->del_vrhs(cfv->vdev); - if (cfv->vdev) + if (cfv->vq_tx) vdev->config->del_vqs(cfv->vdev); free_netdev(netdev); return err; -- 2.39.5