From patchwork Thu Feb 24 18:58:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ammar Faizi X-Patchwork-Id: 545889 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD0DEC433EF for ; Thu, 24 Feb 2022 18:59:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232344AbiBXS7b (ORCPT ); Thu, 24 Feb 2022 13:59:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232292AbiBXS7b (ORCPT ); Thu, 24 Feb 2022 13:59:31 -0500 Received: from gnuweeb.org (gnuweeb.org [51.81.211.47]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0495818E42D; Thu, 24 Feb 2022 10:59:00 -0800 (PST) Received: from integral2.. (unknown [36.78.50.60]) by gnuweeb.org (Postfix) with ESMTPSA id 81CFB7E2A3; Thu, 24 Feb 2022 18:58:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1645729140; bh=FCgV7HQ6Sz7X4EcW0AHGQFLFZjP2p7gApc5nIKixJdk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ll07GBV4MJ5dFyQU6rmVP1mJAwWEhaWkrlN618dRWC4jaGKEnpf1i9SlQIDNK1r6q 2i2Aap4XKfirQn+9MbzRuYSNvBoAKAzAhif1KYa0J/YVm/c7PcANr2NSnVcqi9Cu+r 0DScWrfxF0rDJtS8CzB5oaGYzcgXvswWfyfu8GFnG5pjQpGYcryc1SlB5V+E+uGZLg EeiPBek0alz7Vfkc2KUKxQxMjwraQ0IE1tDI7gFrlmxlRS7bNAlfK50qVmEaYWJ5C/ zEAdkGKX9GzYMJCKzBX06u12/ynxwbSP09K0IgWUOZttB/fXK2h9ZCYmZS5ipZ4mXE CfPdfKeyP8h+g== From: Ammar Faizi To: Mark Brown Cc: Ammar Faizi , Daniel Baluta , Jaroslav Kysela , Kai Vehmanen , Keyon Jie , Liam Girdwood , Rander Wang , Ranjani Sridharan , Takashi Iwai , sound-open-firmware@alsa-project.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Peter Ujfalusi , Pierre-Louis Bossart Subject: [PATCH v4] ASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM Date: Fri, 25 Feb 2022 01:58:36 +0700 Message-Id: <20220224185836.44907-1-ammarfaizi2@gnuweeb.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220224182818.40301-1-ammarfaizi2@gnuweeb.org> References: <20220224145124.15985-1-ammarfaizi2@gnuweeb.org> <04e79b9c-ccb1-119a-c2e2-34c8ca336215@linux.intel.com> <20220224180850.34592-1-ammarfaizi2@gnuweeb.org> <20220224182818.40301-1-ammarfaizi2@gnuweeb.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Do not call snd_dma_free_pages() when snd_dma_alloc_pages() returns -ENOMEM because it leads to a NULL pointer dereference bug. The dmesg says: [ T1387] sof-audio-pci-intel-tgl 0000:00:1f.3: error: memory alloc failed: -12 [ T1387] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ T1387] #PF: supervisor read access in kernel mode [ T1387] #PF: error_code(0x0000) - not-present page [ T1387] PGD 0 P4D 0 [ T1387] Oops: 0000 [#1] PREEMPT SMP NOPTI [ T1387] CPU: 6 PID: 1387 Comm: alsa-sink-HDA A Tainted: G W 5.17.0-rc4-superb-owl-00055-g80d47f5de5e3 [ T1387] Hardware name: HP HP Laptop 14s-dq2xxx/87FD, BIOS F.15 09/15/2021 [ T1387] RIP: 0010:dma_free_noncontiguous+0x37/0x80 [ T1387] Code: [... snip ...] [ T1387] RSP: 0000:ffffc90002b87770 EFLAGS: 00010246 [ T1387] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ T1387] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888101db30d0 [ T1387] RBP: 00000000fffffff4 R08: 0000000000000000 R09: 0000000000000000 [ T1387] R10: 0000000000000000 R11: ffffc90002b874d0 R12: 0000000000000001 [ T1387] R13: 0000000000058000 R14: ffff888105260c68 R15: ffff888105260828 [ T1387] FS: 00007f42e2ffd640(0000) GS:ffff888466b80000(0000) knlGS:0000000000000000 [ T1387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ T1387] CR2: 0000000000000000 CR3: 000000014acf0003 CR4: 0000000000770ee0 [ T1387] PKRU: 55555554 [ T1387] Call Trace: [ T1387] [ T1387] cl_stream_prepare+0x10a/0x120 [snd_sof_intel_hda_common 146addf995b9279ae7f509621078cccbe4f875e1] [... snip ...] [ T1387] Cc: Daniel Baluta Cc: Jaroslav Kysela Cc: Kai Vehmanen Cc: Keyon Jie Cc: Liam Girdwood Cc: Mark Brown Cc: Rander Wang Cc: Ranjani Sridharan Cc: Takashi Iwai Cc: sound-open-firmware@alsa-project.org Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org # v5.2+ Fixes: d16046ffa6de040bf580a64d5f4d0aa18258a854 ("ASoC: SOF: Intel: Add Intel specific HDA firmware loader") Link: https://lore.kernel.org/lkml/20220224145124.15985-1-ammarfaizi2@gnuweeb.org/ # v1 Link: https://lore.kernel.org/lkml/20220224180850.34592-1-ammarfaizi2@gnuweeb.org/ # v2 Link: https://lore.kernel.org/lkml/20220224182818.40301-1-ammarfaizi2@gnuweeb.org/ # v3 Reviewed-by: Peter Ujfalusi Reviewed-by: Pierre-Louis Bossart Signed-off-by: Ammar Faizi --- v4: - Remove 2 `Cc` tags after got the Reviewed-by tag from the CC'ed people as they will be CC'ed anyway. - Extra commit message cleanup. v3: - Address comment from Mark Brown (strip not useful kernel log from the commit message, again). v2: - Append Reviewed-by tag from Peter Ujfalusi. - Append Reviewed-by tag from Pierre-Louis Bossart. - Address comment from Mark Brown (strip irrelevant kernel log from the commit message). sound/soc/sof/intel/hda-loader.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) base-commit: 23d04328444a8fa0ca060c5e532220dac8e8bc26 diff --git a/sound/soc/sof/intel/hda-loader.c b/sound/soc/sof/intel/hda-loader.c index 33306d2023a7..9bbfdab8009d 100644 --- a/sound/soc/sof/intel/hda-loader.c +++ b/sound/soc/sof/intel/hda-loader.c @@ -47,7 +47,7 @@ static struct hdac_ext_stream *cl_stream_prepare(struct snd_sof_dev *sdev, unsig ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, &pci->dev, size, dmab); if (ret < 0) { dev_err(sdev->dev, "error: memory alloc failed: %d\n", ret); - goto error; + goto out_put; } hstream->period_bytes = 0;/* initialize period_bytes */ @@ -58,22 +58,23 @@ static struct hdac_ext_stream *cl_stream_prepare(struct snd_sof_dev *sdev, unsig ret = hda_dsp_iccmax_stream_hw_params(sdev, dsp_stream, dmab, NULL); if (ret < 0) { dev_err(sdev->dev, "error: iccmax stream prepare failed: %d\n", ret); - goto error; + goto out_free; } } else { ret = hda_dsp_stream_hw_params(sdev, dsp_stream, dmab, NULL); if (ret < 0) { dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret); - goto error; + goto out_free; } hda_dsp_stream_spib_config(sdev, dsp_stream, HDA_DSP_SPIB_ENABLE, size); } return dsp_stream; -error: - hda_dsp_stream_put(sdev, direction, hstream->stream_tag); +out_free: snd_dma_free_pages(dmab); +out_put: + hda_dsp_stream_put(sdev, direction, hstream->stream_tag); return ERR_PTR(ret); }