From 6e801dc411329aff592fbd48fb116183d0acdb00 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 4 Jun 2020 18:12:16 +0100 Subject: [PATCH] ASoC: meson: fix memory leak of links if allocation of ldata fails 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. Fixes: 7864a79f37b5 ("ASoC: meson: add axg sound card support") Signed-off-by: Colin Ian King Addresses-Coverity: ("Resource leak") Link: https://lore.kernel.org/r/20200604171216.60043-1-colin.king@canonical.com Signed-off-by: Mark Brown --- 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);