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| author | Kai Vehmanen <kai.vehmanen@linux.intel.com> | 2019-12-17 18:05:16 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-12-18 19:49:22 +0000 |
| commit | b06e46427f987bf83dcb6a69516b57276eb8ec0c (patch) | |
| tree | d1ce39c279d0a353b9d40f447553012b4cdae5e0 /sound/hda | |
| parent | 556672d75ff486e0b6786056da624131679e0576 (diff) | |
| download | linux-b06e46427f987bf83dcb6a69516b57276eb8ec0c.tar.bz2 | |
ASoC: SOF: fix fault at driver unload after failed probe
If sof_machine_check() fails during driver probe, the IPC
state is not initialized and this will lead to a NULL
dereference at driver unload. Example log is as follows:
[ 1535.980630] sof-audio-pci 0000:00:1f.3: error: no matching ASoC machine driver found - aborting probe
[ 1535.980631] sof-audio-pci 0000:00:1f.3: error: failed to get machine info -19
[ 1535.980632] sof-audio-pci 0000:00:1f.3: error: sof_probe_work failed err: -19
[ 1550.798373] BUG: kernel NULL pointer dereference, address: 0000000000000008
...
[ 1550.798393] Call Trace:
[ 1550.798397] snd_sof_ipc_free+0x15/0x30 [snd_sof]
[ 1550.798399] snd_sof_device_remove+0x29/0xa0 [snd_sof]
[ 1550.798400] sof_pci_remove+0x10/0x30 [snd_sof_pci]
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191218000518.5830-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/hda')
0 files changed, 0 insertions, 0 deletions