On Thu, 2024-06-13 at 11:01 +0200, Amadeusz Sławiński wrote: > It was reported that recent fix for memory corruption during topology > load, causes corruption in other cases. Instead of being overeager with > checking topology, assume that it is properly formatted and just > duplicate strings. > > Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> > Closes: https://lore.kernel.org/linux-sound/171812236450.201359.3019210915105428447.b4-ty@xxxxxxxxxx/T/#m8c4bd5abf453960fde6f826c4b7f84881da63e9d > Suggested-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx> > Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx> > --- > sound/soc/soc-topology.c | 12 +++--------- > 1 file changed, 3 insertions(+), 9 deletions(-) > > diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c > index 0225bc5fc425a..4b166294602fa 100644 > --- a/sound/soc/soc-topology.c > +++ b/sound/soc/soc-topology.c > @@ -1052,21 +1052,15 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg, > break; > } > > - route->source = devm_kmemdup(tplg->dev, elem->source, > - min(strlen(elem->source), maxlen), > - GFP_KERNEL); > - route->sink = devm_kmemdup(tplg->dev, elem->sink, > - min(strlen(elem->sink), maxlen), > - GFP_KERNEL); > + route->source = devm_kstrdup(tplg->dev, elem->source, GFP_KERNEL); > + route->sink = devm_kstrdup(tplg->dev, elem->sink, GFP_KERNEL); > if (!route->source || !route->sink) { > ret = -ENOMEM; > break; > } > > if (strnlen(elem->control, maxlen) != 0) { > - route->control = devm_kmemdup(tplg->dev, elem->control, > - min(strlen(elem->control), maxlen), > - GFP_KERNEL); > + route->control = devm_kstrdup(tplg->dev, elem->control, GFP_KERNEL); > if (!route->control) { > ret = -ENOMEM; > break; I am getting very similar corruption/SOF errors in 6.6.45 but there is no similar fix in 6.6.x that I can see. Hand hacked this patch and now the errors are gone: --- ./sound/soc/soc-topology.c.org 2024-08-13 17:58:49.837295484 +0200 +++ ./sound/soc/soc-topology.c 2024-08-13 18:20:44.564107024 +0200 @@ -1060,23 +1060,15 @@ break; } - route->source = devm_kmemdup(tplg->dev, elem->source, - min(strlen(elem->source), - SNDRV_CTL_ELEM_ID_NAME_MAXLEN), - GFP_KERNEL); - route->sink = devm_kmemdup(tplg->dev, elem->sink, - min(strlen(elem->sink), SNDRV_CTL_ELEM_ID_NAME_MAXLEN), - GFP_KERNEL); + route->source = devm_kstrdup(tplg->dev, elem->source, GFP_KERNEL); + route->sink = devm_kstrdup(tplg->dev, elem->sink, GFP_KERNEL); if (!route->source || !route->sink) { ret = -ENOMEM; break; } if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) != 0) { - route->control = devm_kmemdup(tplg->dev, elem->control, - min(strlen(elem->control), - SNDRV_CTL_ELEM_ID_NAME_MAXLEN), - GFP_KERNEL); + route->control = devm_kstrdup(tplg->dev, elem->control, GFP_KERNEL); if (!route->control) { ret = -ENOMEM; break; Just luck? Jocke
