The patch
ASoC: hdac_hdmi: Fix possible memory leak on parse and map nid failure
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
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
From 1c0a7de226660b0306b54aaf2cb52312e74723eb Mon Sep 17 00:00:00 2001
From: "Subhransu S. Prusty" subhransu.s.prusty@intel.com Date: Tue, 7 Nov 2017 16:16:26 +0530 Subject: [PATCH] ASoC: hdac_hdmi: Fix possible memory leak on parse and map nid failure
During failure, widgets in cvt_list and pin_list are not freed. So fix the possible memory leak by freeing them when failure occurs.
Signed-off-by: Subhransu S. Prusty subhransu.s.prusty@intel.com Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com Acked-By: Vinod Koul vinod.koul@intel.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/hdac_hdmi.c | 36 ++++++++++++++++++++++++++++++------ 1 file changed, 30 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index 0c0aa6182502..f3b4f4dfae6a 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -1453,6 +1453,8 @@ static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev, int i, num_nodes; struct hdac_device *hdac = &edev->hdac; struct hdac_hdmi_priv *hdmi = edev->private_data; + struct hdac_hdmi_cvt *temp_cvt, *cvt_next; + struct hdac_hdmi_pin *temp_pin, *pin_next; int ret;
hdac_hdmi_skl_enable_all_pins(hdac); @@ -1482,32 +1484,54 @@ static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev, case AC_WID_AUD_OUT: ret = hdac_hdmi_add_cvt(edev, nid); if (ret < 0) - return ret; + goto free_widgets; break;
case AC_WID_PIN: ret = hdac_hdmi_add_pin(edev, nid); if (ret < 0) - return ret; + goto free_widgets; break; } }
hdac->end_nid = nid;
- if (!hdmi->num_pin || !hdmi->num_cvt) - return -EIO; + if (!hdmi->num_pin || !hdmi->num_cvt) { + ret = -EIO; + goto free_widgets; + }
ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt); if (ret) { dev_err(&hdac->dev, "Failed to create dais with err: %d\n", ret); - return ret; + goto free_widgets; }
*num_dais = hdmi->num_cvt; + ret = hdac_hdmi_init_dai_map(edev); + if (ret < 0) + goto free_widgets;
- return hdac_hdmi_init_dai_map(edev); + return ret; + +free_widgets: + list_for_each_entry_safe(temp_cvt, cvt_next, &hdmi->cvt_list, head) { + list_del(&temp_cvt->head); + kfree(temp_cvt->name); + kfree(temp_cvt); + } + + list_for_each_entry_safe(temp_pin, pin_next, &hdmi->pin_list, head) { + for (i = 0; i < temp_pin->num_ports; i++) + temp_pin->ports[i].pin = NULL; + kfree(temp_pin->ports); + list_del(&temp_pin->head); + kfree(temp_pin); + } + + return ret; }
static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)