| Message ID | 20201211170629.871085-1-ribalda@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoC: Intel: Skylake: skl-topology: Fix OOPs ib skl_tplg_complete | expand |
> If dobj->control is not initialized we end up in an OOPs during > skl_tplg_complete: > > [ 26.553358] BUG: kernel NULL pointer dereference, address: > 0000000000000078 > [ 26.561151] #PF: supervisor read access in kernel mode > [ 26.566897] #PF: error_code(0x0000) - not-present page > [ 26.572642] PGD 0 P4D 0 > [ 26.575479] Oops: 0000 [#1] PREEMPT SMP PTI > [ 26.580158] CPU: 2 PID: 2082 Comm: udevd Tainted: G C > 5.4.81 #4 > [ 26.588232] Hardware name: HP Soraka/Soraka, BIOS > Google_Soraka.10431.106.0 12/03/2019 > [ 26.597082] RIP: 0010:skl_tplg_complete+0x70/0x144 [snd_soc_skl] > > Fixes: 2d744ecf2b98 ("ASoC: Intel: Skylake: Automatic DMIC format configuration according to information from NHL") > Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> > --- > sound/soc/intel/skylake/skl-topology.c | 15 ++++++++------- > 1 file changed, 8 insertions(+), 7 deletions(-) > > diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c > index 40bee10b0c65..0955cbb4e918 100644 > --- a/sound/soc/intel/skylake/skl-topology.c > +++ b/sound/soc/intel/skylake/skl-topology.c > @@ -3619,19 +3619,20 @@ static void skl_tplg_complete(struct snd_soc_component *component) > > list_for_each_entry(dobj, &component->dobj_list, list) { > struct snd_kcontrol *kcontrol = dobj->control.kcontrol; > - struct soc_enum *se = > - (struct soc_enum *)kcontrol->private_value; > - char **texts = dobj->control.dtexts; > + struct soc_enum *se; > + char **texts; > char chan_text[4]; > > - if (dobj->type != SND_SOC_DOBJ_ENUM || > - dobj->control.kcontrol->put != > - skl_tplg_multi_config_set_dmic) > + if (dobj->type != SND_SOC_DOBJ_ENUM || !kcontrol || > + kcontrol->put != skl_tplg_multi_config_set_dmic) > continue; > + > + se = (struct soc_enum *)kcontrol->private_value; > + texts = dobj->control.dtexts; > sprintf(chan_text, "c%d", mach->mach_params.dmic_num); > > for (i = 0; i < se->items; i++) { > - struct snd_ctl_elem_value val; > + struct snd_ctl_elem_value val = {}; > > if (strstr(texts[i], chan_text)) { > val.value.enumerated.item[0] = i; Hi Ricardo, there is another thread regarding this issue (with fix provided by Lukasz Majczak), you can find it here: https://www.spinics.net/lists/stable/msg431524.html Thanks, Mateusz
Hi Mateusz On Mon, Dec 14, 2020 at 6:07 PM Gorski, Mateusz <mateusz.gorski@linux.intel.com> wrote: > > > > If dobj->control is not initialized we end up in an OOPs during > > skl_tplg_complete: > > > > [ 26.553358] BUG: kernel NULL pointer dereference, address: > > 0000000000000078 > > [ 26.561151] #PF: supervisor read access in kernel mode > > [ 26.566897] #PF: error_code(0x0000) - not-present page > > [ 26.572642] PGD 0 P4D 0 > > [ 26.575479] Oops: 0000 [#1] PREEMPT SMP PTI > > [ 26.580158] CPU: 2 PID: 2082 Comm: udevd Tainted: G C > > 5.4.81 #4 > > [ 26.588232] Hardware name: HP Soraka/Soraka, BIOS > > Google_Soraka.10431.106.0 12/03/2019 > > [ 26.597082] RIP: 0010:skl_tplg_complete+0x70/0x144 [snd_soc_skl] > > > > Fixes: 2d744ecf2b98 ("ASoC: Intel: Skylake: Automatic DMIC format configuration according to information from NHL") > > Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> > > --- > > sound/soc/intel/skylake/skl-topology.c | 15 ++++++++------- > > 1 file changed, 8 insertions(+), 7 deletions(-) > > > > diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c > > index 40bee10b0c65..0955cbb4e918 100644 > > --- a/sound/soc/intel/skylake/skl-topology.c > > +++ b/sound/soc/intel/skylake/skl-topology.c > > @@ -3619,19 +3619,20 @@ static void skl_tplg_complete(struct snd_soc_component *component) > > > > list_for_each_entry(dobj, &component->dobj_list, list) { > > struct snd_kcontrol *kcontrol = dobj->control.kcontrol; > > - struct soc_enum *se = > > - (struct soc_enum *)kcontrol->private_value; > > - char **texts = dobj->control.dtexts; > > + struct soc_enum *se; > > + char **texts; > > char chan_text[4]; > > > > - if (dobj->type != SND_SOC_DOBJ_ENUM || > > - dobj->control.kcontrol->put != > > - skl_tplg_multi_config_set_dmic) > > + if (dobj->type != SND_SOC_DOBJ_ENUM || !kcontrol || > > + kcontrol->put != skl_tplg_multi_config_set_dmic) > > continue; > > + > > + se = (struct soc_enum *)kcontrol->private_value; > > + texts = dobj->control.dtexts; > > sprintf(chan_text, "c%d", mach->mach_params.dmic_num); > > > > for (i = 0; i < se->items; i++) { > > - struct snd_ctl_elem_value val; > > + struct snd_ctl_elem_value val = {}; > > > > if (strstr(texts[i], chan_text)) { > > val.value.enumerated.item[0] = i; > > > Hi Ricardo, > > there is another thread regarding this issue (with fix provided by > Lukasz Majczak), you can find it here: > > https://www.spinics.net/lists/stable/msg431524.html I saw it just after I sent it :(. The most embarrassing thing is that we are working in the same project ;) Sorry for the noise > > > Thanks, > Mateusz >
diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c index 40bee10b0c65..0955cbb4e918 100644 --- a/sound/soc/intel/skylake/skl-topology.c +++ b/sound/soc/intel/skylake/skl-topology.c @@ -3619,19 +3619,20 @@ static void skl_tplg_complete(struct snd_soc_component *component) list_for_each_entry(dobj, &component->dobj_list, list) { struct snd_kcontrol *kcontrol = dobj->control.kcontrol; - struct soc_enum *se = - (struct soc_enum *)kcontrol->private_value; - char **texts = dobj->control.dtexts; + struct soc_enum *se; + char **texts; char chan_text[4]; - if (dobj->type != SND_SOC_DOBJ_ENUM || - dobj->control.kcontrol->put != - skl_tplg_multi_config_set_dmic) + if (dobj->type != SND_SOC_DOBJ_ENUM || !kcontrol || + kcontrol->put != skl_tplg_multi_config_set_dmic) continue; + + se = (struct soc_enum *)kcontrol->private_value; + texts = dobj->control.dtexts; sprintf(chan_text, "c%d", mach->mach_params.dmic_num); for (i = 0; i < se->items; i++) { - struct snd_ctl_elem_value val; + struct snd_ctl_elem_value val = {}; if (strstr(texts[i], chan_text)) { val.value.enumerated.item[0] = i;
If dobj->control is not initialized we end up in an OOPs during skl_tplg_complete: [ 26.553358] BUG: kernel NULL pointer dereference, address: 0000000000000078 [ 26.561151] #PF: supervisor read access in kernel mode [ 26.566897] #PF: error_code(0x0000) - not-present page [ 26.572642] PGD 0 P4D 0 [ 26.575479] Oops: 0000 [#1] PREEMPT SMP PTI [ 26.580158] CPU: 2 PID: 2082 Comm: udevd Tainted: G C 5.4.81 #4 [ 26.588232] Hardware name: HP Soraka/Soraka, BIOS Google_Soraka.10431.106.0 12/03/2019 [ 26.597082] RIP: 0010:skl_tplg_complete+0x70/0x144 [snd_soc_skl] Fixes: 2d744ecf2b98 ("ASoC: Intel: Skylake: Automatic DMIC format configuration according to information from NHL") Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> --- sound/soc/intel/skylake/skl-topology.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)