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| author | Wenwen Wang <wenwen@cs.uga.edu> | 2019-07-22 08:57:44 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-07-22 17:33:38 +0100 |
| commit | 45004d66f2a28d78f543fb2ffbc133e31dc2d162 (patch) | |
| tree | ca55e1411f9c37fe844588b04d9d90e114109edc /sound | |
| parent | 62ec3d13601bd626ca7a0edef6d45dbb753d94e8 (diff) | |
| download | linux-45004d66f2a28d78f543fb2ffbc133e31dc2d162.tar.bz2 | |
ASoC: dapm: fix a memory leak bug
In snd_soc_dapm_new_control_unlocked(), a kernel buffer is allocated in
dapm_cnew_widget() to hold the new dapm widget. Then, different actions are
taken according to the id of the widget, i.e., 'w->id'. If any failure
occurs during this process, snd_soc_dapm_new_control_unlocked() should be
terminated by going to the 'request_failed' label. However, the allocated
kernel buffer is not freed on this code path, leading to a memory leak bug.
To fix the above issue, free the buffer before returning from
snd_soc_dapm_new_control_unlocked() through the 'request_failed' label.
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Link: https://lore.kernel.org/r/1563803864-2809-1-git-send-email-wang6495@umn.edu
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-dapm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 9cd87e47ee8f..656cb5cd9cd8 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3704,6 +3704,8 @@ request_failed: dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", w->name, ret); + kfree_const(w->sname); + kfree(w); return ERR_PTR(ret); } |