| Message ID | 20240613090126.841189-1-amadeuszx.slawinski@linux.intel.com |
|---|---|
| State | Accepted |
| Commit | 0298f51652be47b79780833e0b63194e1231fa34 |
| Headers | show |
| Series | ASoC: topology: Fix route memory corruption | expand |
On Thu, 13 Jun 2024 11:01:26 +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. > > Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/1] ASoC: topology: Fix route memory corruption commit: 0298f51652be47b79780833e0b63194e1231fa34 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
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@linux.intel.com> > Closes: https://lore.kernel.org/linux-sound/171812236450.201359.3019210915105428447.b4-ty@kernel.org/T/#m8c4bd5abf453960fde6f826c4b7f84881da63e9d > Suggested-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> > Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> > --- > 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
On Tue, 2024-08-13 at 19:11 +0200, Joakim Tjernlund wrote: > 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@linux.intel.com> > > Closes: https://lore.kernel.org/linux-sound/171812236450.201359.3019210915105428447.b4-ty@kernel.org/T/#m8c4bd5abf453960fde6f826c4b7f84881da63e9d > > Suggested-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> > > Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> > > --- > > 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 Never mind, it was just added to 6.6.x stable queue. Jocke
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;
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@linux.intel.com> Closes: https://lore.kernel.org/linux-sound/171812236450.201359.3019210915105428447.b4-ty@kernel.org/T/#m8c4bd5abf453960fde6f826c4b7f84881da63e9d Suggested-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> --- sound/soc/soc-topology.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-)