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 0041A1A7AFD; Wed, 20 Nov 2024 12:59:50 +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=1732107591; cv=none; b=jOEB6lk4o0yQf8IAFHa+cjueffzEZ7gkSkk1oMmAEcV0hiy6RcnDs8jJa1R6FNXBmy4hc2nTHmCNH8hN4atoEowg0uyWxZNhQu6dYbg2oqecCoAweN3ygFxgjTSp5aMo5k1nLZhu1eAk+fw7n9rSb6yQX01yjDnWYrdc0CpSmMg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732107591; c=relaxed/simple; bh=IkMDTci/vZj+FOEv0MbBuOzjQW6xVBH689Y5clI9Axg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pxiyG6feu21BdkTh1ovu1WdwI7TouR3KCAbETqcYemi/qtTxoGjFjDzEgXdAp42PWW/5NRkKbiizprxLzr5TNiDQqjyZCsD/uvUOCfBOi/jdCLQ42+qHvB70IO3dIXUUtAbOBq0jS3qpMZt2nAjVfubvXG+OP64CmU1j1pvd5Pw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=1aDNjjcz; 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="1aDNjjcz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C14B8C4CECD; Wed, 20 Nov 2024 12:59:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1732107590; bh=IkMDTci/vZj+FOEv0MbBuOzjQW6xVBH689Y5clI9Axg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1aDNjjczTzE6ya3ZYRkNmxZr/J79P7F0MfjXmuA5ZXJz5aY0OrAzsEwmRR27tBQzg jOiE4bLqrwN5hMLjLjsS7zcE8ZqgIllyx7K0ibQ4h0SZwMlB4LZ0FVzWLMHjHhXata FXFX1DARNk1p9ef7yOR2tlIYQ4ylI/X/d1CDuoMI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Parav Pandit , Angus Chen , Xiaoguang Wang , "Michael S. Tsirkin" , Jason Wang Subject: [PATCH 6.6 34/82] vp_vdpa: fix id_table array not null terminated error Date: Wed, 20 Nov 2024 13:56:44 +0100 Message-ID: <20241120125630.381800349@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241120125629.623666563@linuxfoundation.org> References: <20241120125629.623666563@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xiaoguang Wang commit 4e39ecadf1d2a08187139619f1f314b64ba7d947 upstream. Allocate one extra virtio_device_id as null terminator, otherwise vdpa_mgmtdev_get_classes() may iterate multiple times and visit undefined memory. Fixes: ffbda8e9df10 ("vdpa/vp_vdpa : add vdpa tool support in vp_vdpa") Cc: stable@vger.kernel.org Suggested-by: Parav Pandit Signed-off-by: Angus Chen Signed-off-by: Xiaoguang Wang Message-Id: <20241105133518.1494-1-lege.wang@jaguarmicro.com> Signed-off-by: Michael S. Tsirkin Reviewed-by: Parav Pandit Acked-by: Jason Wang Signed-off-by: Greg Kroah-Hartman --- drivers/vdpa/virtio_pci/vp_vdpa.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) --- a/drivers/vdpa/virtio_pci/vp_vdpa.c +++ b/drivers/vdpa/virtio_pci/vp_vdpa.c @@ -591,7 +591,11 @@ static int vp_vdpa_probe(struct pci_dev goto mdev_err; } - mdev_id = kzalloc(sizeof(struct virtio_device_id), GFP_KERNEL); + /* + * id_table should be a null terminated array, so allocate one additional + * entry here, see vdpa_mgmtdev_get_classes(). + */ + mdev_id = kcalloc(2, sizeof(struct virtio_device_id), GFP_KERNEL); if (!mdev_id) { err = -ENOMEM; goto mdev_id_err; @@ -611,8 +615,8 @@ static int vp_vdpa_probe(struct pci_dev goto probe_err; } - mdev_id->device = mdev->id.device; - mdev_id->vendor = mdev->id.vendor; + mdev_id[0].device = mdev->id.device; + mdev_id[0].vendor = mdev->id.vendor; mgtdev->id_table = mdev_id; mgtdev->max_supported_vqs = vp_modern_get_num_queues(mdev); mgtdev->supported_features = vp_modern_get_features(mdev);