Patch "ASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM" has been added to the 5.4-stable tree
gregkh at linuxfoundation.org
gregkh at linuxfoundation.org
Sun Apr 3 12:24:37 CEST 2022
This is a note to let you know that I've just added the patch titled
ASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-sof-intel-fix-null-ptr-dereference-when-enomem.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.
>From b7fb0ae09009d076964afe4c1a2bde1ee2bd88a9 Mon Sep 17 00:00:00 2001
From: Ammar Faizi <ammarfaizi2 at gnuweeb.org>
Date: Fri, 25 Feb 2022 01:58:36 +0700
Subject: ASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM
From: Ammar Faizi <ammarfaizi2 at gnuweeb.org>
commit b7fb0ae09009d076964afe4c1a2bde1ee2bd88a9 upstream.
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] <TASK>
[ T1387] cl_stream_prepare+0x10a/0x120 [snd_sof_intel_hda_common 146addf995b9279ae7f509621078cccbe4f875e1]
[... snip ...]
[ T1387] </TASK>
Cc: Daniel Baluta <daniel.baluta at nxp.com>
Cc: Jaroslav Kysela <perex at perex.cz>
Cc: Kai Vehmanen <kai.vehmanen at linux.intel.com>
Cc: Keyon Jie <yang.jie at linux.intel.com>
Cc: Liam Girdwood <lgirdwood at gmail.com>
Cc: Mark Brown <broonie at kernel.org>
Cc: Rander Wang <rander.wang at intel.com>
Cc: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Cc: Takashi Iwai <tiwai at suse.com>
Cc: sound-open-firmware at alsa-project.org
Cc: alsa-devel at alsa-project.org
Cc: linux-kernel at vger.kernel.org
Cc: stable at 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 <peter.ujfalusi at linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Signed-off-by: Ammar Faizi <ammarfaizi2 at gnuweeb.org>
Link: https://lore.kernel.org/r/20220224185836.44907-1-ammarfaizi2@gnuweeb.org
Signed-off-by: Mark Brown <broonie at kernel.org>
[ammarfaizi2: Backport to Linux 5.4 LTS]
Signed-off-by: Ammar Faizi <ammarfaizi2 at gnuweeb.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
sound/soc/sof/intel/hda-loader.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/sound/soc/sof/intel/hda-loader.c
+++ b/sound/soc/sof/intel/hda-loader.c
@@ -50,7 +50,7 @@ static int cl_stream_prepare(struct snd_
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: %x\n", ret);
- goto error;
+ goto out_put;
}
hstream->period_bytes = 0;/* initialize period_bytes */
@@ -60,16 +60,17 @@ static int cl_stream_prepare(struct snd_
ret = hda_dsp_stream_hw_params(sdev, dsp_stream, dmab, NULL);
if (ret < 0) {
dev_err(sdev->dev, "error: hdac prepare failed: %x\n", ret);
- goto error;
+ goto out_free;
}
hda_dsp_stream_spib_config(sdev, dsp_stream, HDA_DSP_SPIB_ENABLE, size);
return hstream->stream_tag;
-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 ret;
}
Patches currently in stable-queue which might be from ammarfaizi2 at gnuweeb.org are
queue-5.4/asoc-sof-intel-fix-null-ptr-dereference-when-enomem.patch
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