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| author | Ranjani Sridharan <ranjani.sridharan@linux.intel.com> | 2020-07-07 15:40:27 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-07-08 15:02:02 +0100 |
| commit | eceb5437ed0d41be5d12af3add58b3be2d5719e5 (patch) | |
| tree | f4e73597877eaf401e6bcfe7e43739751c9e5fc1 /sound | |
| parent | 503ed52225ed3d369c8e0dedf13556a7bc1e5c2b (diff) | |
| download | linux-stable-eceb5437ed0d41be5d12af3add58b3be2d5719e5.tar.gz linux-stable-eceb5437ed0d41be5d12af3add58b3be2d5719e5.tar.bz2 linux-stable-eceb5437ed0d41be5d12af3add58b3be2d5719e5.zip | |
ASoC: SOF: core: fix null-ptr-deref bug during device removal
The DSP should be notified for device removal only if the
probe was successful. Fixes the following KASAN bug:
BUG: KASAN: null-ptr-deref in sof_ipc_tx_message+0x80/0x160 [snd_sof]
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200707204027.114169-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/sof/core.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c index 339c4930b0c0..adc7c37145d6 100644 --- a/sound/soc/sof/core.c +++ b/sound/soc/sof/core.c @@ -345,15 +345,15 @@ int snd_sof_device_remove(struct device *dev) struct snd_sof_pdata *pdata = sdev->pdata; int ret; - ret = snd_sof_dsp_power_down_notify(sdev); - if (ret < 0) - dev_warn(dev, "error: %d failed to prepare DSP for device removal", - ret); - if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) cancel_work_sync(&sdev->probe_work); if (sdev->fw_state > SOF_FW_BOOT_NOT_STARTED) { + ret = snd_sof_dsp_power_down_notify(sdev); + if (ret < 0) + dev_warn(dev, "error: %d failed to prepare DSP for device removal", + ret); + snd_sof_fw_unload(sdev); snd_sof_ipc_free(sdev); snd_sof_free_debug(sdev); |