| Message ID | 20200604171216.60043-1-colin.king@canonical.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 6e801dc411329aff592fbd48fb116183d0acdb00 |
| Headers | show |
| Series | ASoC: meson: fix memory leak of links if allocation of ldata fails | expand |
On Thu 04 Jun 2020 at 19:12, Colin King <colin.king@canonical.com> wrote: > From: Colin Ian King <colin.king@canonical.com> > > Currently if the allocation of ldata fails the error return path > does not kfree the allocated links object. Fix this by adding > an error exit return path that performs the necessary kfree'ing. > > Addresses-Coverity: ("Resource leak") > Fixes: 7864a79f37b5 ("ASoC: meson: add axg sound card support") > Signed-off-by: Colin Ian King <colin.king@canonical.com> Looks good, Thx Acked-by: Jerome Brunet <jbrunet@baylibre.com> > --- > sound/soc/meson/meson-card-utils.c | 17 ++++++++++++----- > 1 file changed, 12 insertions(+), 5 deletions(-) > > diff --git a/sound/soc/meson/meson-card-utils.c b/sound/soc/meson/meson-card-utils.c > index 2ca8c98e204f..5a4a91c88734 100644 > --- a/sound/soc/meson/meson-card-utils.c > +++ b/sound/soc/meson/meson-card-utils.c > @@ -49,19 +49,26 @@ int meson_card_reallocate_links(struct snd_soc_card *card, > links = krealloc(priv->card.dai_link, > num_links * sizeof(*priv->card.dai_link), > GFP_KERNEL | __GFP_ZERO); > + if (!links) > + goto err_links; > + > ldata = krealloc(priv->link_data, > num_links * sizeof(*priv->link_data), > GFP_KERNEL | __GFP_ZERO); > - > - if (!links || !ldata) { > - dev_err(priv->card.dev, "failed to allocate links\n"); > - return -ENOMEM; > - } > + if (!ldata) > + goto err_ldata; > > priv->card.dai_link = links; > priv->link_data = ldata; > priv->card.num_links = num_links; > return 0; > + > +err_ldata: > + kfree(links); > +err_links: > + dev_err(priv->card.dev, "failed to allocate links\n"); > + return -ENOMEM; > + > } > EXPORT_SYMBOL_GPL(meson_card_reallocate_links);
On Thu, 4 Jun 2020 18:12:16 +0100, Colin King wrote: > Currently if the allocation of ldata fails the error return path > does not kfree the allocated links object. Fix this by adding > an error exit return path that performs the necessary kfree'ing. Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/1] ASoC: meson: fix memory leak of links if allocation of ldata fails commit: 6e801dc411329aff592fbd48fb116183d0acdb00 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
diff --git a/sound/soc/meson/meson-card-utils.c b/sound/soc/meson/meson-card-utils.c index 2ca8c98e204f..5a4a91c88734 100644 --- a/sound/soc/meson/meson-card-utils.c +++ b/sound/soc/meson/meson-card-utils.c @@ -49,19 +49,26 @@ int meson_card_reallocate_links(struct snd_soc_card *card, links = krealloc(priv->card.dai_link, num_links * sizeof(*priv->card.dai_link), GFP_KERNEL | __GFP_ZERO); + if (!links) + goto err_links; + ldata = krealloc(priv->link_data, num_links * sizeof(*priv->link_data), GFP_KERNEL | __GFP_ZERO); - - if (!links || !ldata) { - dev_err(priv->card.dev, "failed to allocate links\n"); - return -ENOMEM; - } + if (!ldata) + goto err_ldata; priv->card.dai_link = links; priv->link_data = ldata; priv->card.num_links = num_links; return 0; + +err_ldata: + kfree(links); +err_links: + dev_err(priv->card.dev, "failed to allocate links\n"); + return -ENOMEM; + } EXPORT_SYMBOL_GPL(meson_card_reallocate_links);