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 #3 56590caeed02394520e20ca5a2059907eb2d5079
[ 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: 8b 87 80 03 00 00 48 85 c0 75 07 48 8b 05 f9 39 2b 02 48 85 c0 74 13 4c 8b 48 28 4d 85 c9 74 0a 48 89 da 44 89 c1 5b 41 ff e1 <48> 8b 0b 48 8b 11 48 8b 49 10 48 83 e2 fc 48 81 c6 ff 0f 00 00 48
[ 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]
[ T1387] hda_dsp_cl_boot_firmware_iccmax+0x50/0xf0 [snd_sof_intel_hda_common 146addf995b9279ae7f509621078cccbe4f875e1]
[ T1387] snd_sof_run_firmware+0xb5/0x300 [snd_sof b83a5eaf64712c6f474ef3641062bb71902deae4]
[ T1387] sof_resume+0xb1/0x2c0 [snd_sof b83a5eaf64712c6f474ef3641062bb71902deae4]
[ T1387] ? pci_pme_active+0x1b4/0x220
[ T1387] pci_pm_runtime_resume+0xaa/0xe0
[ T1387] ? pci_pm_runtime_suspend+0x190/0x190
[ T1387] __rpm_callback+0x9c/0x320
[ T1387] ? pci_pm_runtime_suspend+0x190/0x190
[ T1387] ? pci_pm_runtime_suspend+0x190/0x190
[ T1387] rpm_resume+0x50d/0x690
[ T1387] __pm_runtime_resume+0x69/0x80
[ T1387] snd_soc_pcm_component_pm_runtime_get+0x60/0xe0 [snd_soc_core 6817f963f4c978c6ec831f778545ab4db1a1023f]
[ T1387] __soc_pcm_open+0x82/0x530 [snd_soc_core 6817f963f4c978c6ec831f778545ab4db1a1023f]
[ T1387] dpcm_be_dai_startup+0x14b/0x260 [snd_soc_core 6817f963f4c978c6ec831f778545ab4db1a1023f]
[ T1387] dpcm_fe_dai_startup+0x73/0x930 [snd_soc_core 6817f963f4c978c6ec831f778545ab4db1a1023f]
[ T1387] ? dpcm_add_paths+0x109/0x1b0 [snd_soc_core 6817f963f4c978c6ec831f778545ab4db1a1023f]
[ T1387] dpcm_fe_dai_open+0x74/0x160 [snd_soc_core 6817f963f4c978c6ec831f778545ab4db1a1023f]
[ T1387] snd_pcm_open_substream+0x56f/0x840 [snd_pcm 2213f8e36532d8bc92ec1ec574108b0385b1b13a]
[ T1387] snd_pcm_open+0xb3/0x1d0 [snd_pcm 2213f8e36532d8bc92ec1ec574108b0385b1b13a]
[ T1387] ? sched_dynamic_update+0x1a0/0x1a0
[ T1387] ? cd_forget+0x80/0x80
[ T1387] snd_pcm_playback_open+0x3c/0x60 [snd_pcm 2213f8e36532d8bc92ec1ec574108b0385b1b13a]
[ T1387] chrdev_open+0x1d3/0x200
[ T1387] ? cd_forget+0x80/0x80
[ T1387] do_dentry_open+0x254/0x370
[ T1387] path_openat+0x9e6/0xbc0
[ T1387] ? lock_release+0x230/0x300
[ T1387] ? snd_ctl_ioctl+0x759/0x900 [snd 1eb0a4959d3d3710c16836cd2838d885bf8f75a9]
[ T1387] do_filp_open+0x93/0x120
[ T1387] ? alloc_fd+0x147/0x180
[ T1387] ? _raw_spin_unlock+0x29/0x40
[ T1387] ? alloc_fd+0x147/0x180
[ T1387] do_sys_openat2+0x68/0x130
[ T1387] __x64_sys_openat+0x6f/0x80
[ T1387] do_syscall_64+0x3d/0xb0
[ T1387] ? exit_to_user_mode_prepare+0x2c/0x50
[ T1387] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ T1387] RIP: 0033:0x7f42ee19a6e4
[ T1387] Code: 24 20 eb 8f 66 90 44 89 54 24 0c e8 16 d2 f7 ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 58 d2 f7 ff 8b 44
[ T1387] RSP: 002b:00007f42e2ffc620 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
[ T1387] RAX: ffffffffffffffda RBX: 0000000000080802 RCX: 00007f42ee19a6e4
[ T1387] RDX: 0000000000080802 RSI: 00007f42e2ffc6c0 RDI: 00000000ffffff9c
[ T1387] RBP: 00007f42e2ffc6c0 R08: 0000000000000000 R09: 00007f42e2ffc437
[ T1387] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080802
[ T1387] R13: 00007f42e8c3faa0 R14: 00007f42e2ffc6c0 R15: 0000000081204101
[ T1387] </TASK>
[... snip linked modules ...]
[ T1387] CR2: 0000000000000000
[ T1387] ---[ end trace 0000000000000000 ]---
[ T1387] RIP: 0010:dma_free_noncontiguous+0x37/0x80
[ T1387] Code: 8b 87 80 03 00 00 48 85 c0 75 07 48 8b 05 f9 39 2b 02 48 85 c0 74 13 4c 8b 48 28 4d 85 c9 74 0a 48 89 da 44 89 c1 5b 41 ff e1 <48> 8b 0b 48 8b 11 48 8b 49 10 48 83 e2 fc 48 81 c6 ff 0f 00 00 48
[ 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
Cc: Daniel Baluta <daniel.baluta@xxxxxxx>
Cc: Jaroslav Kysela <perex@xxxxxxxx>
Cc: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
Cc: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx>
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Cc: Rander Wang <rander.wang@xxxxxxxxx>
Cc: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxxx>
Fixes: d16046ffa6de040bf580a64d5f4d0aa18258a854 ("ASoC: SOF: Intel: Add Intel specific HDA firmware loader")
Cc: stable@xxxxxxxxxxxxxxx # v5.2+
Cc: sound-open-firmware@xxxxxxxxxxxxxxxx
Cc: alsa-devel@xxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/lkml/cfe9e583-e20a-f1d6-2a81-2538ca3ca054@xxxxxxxxxxxxxxx/T/ # v1
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Signed-off-by: Ammar Faizi <ammarfaizi2@xxxxxxxxxxx>
---
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(-)
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);
}
--
2.32.0
