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selftests/alsa: Fix memory leak in find_controls error path

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In find_controls(), card_data is allocated with malloc() but when
snd_ctl_open_lconf() fails, the code jumps to next_card without
freeing the allocated memory. This results in a memory leak for
each card where snd_ctl_open_lconf() fails.

Add free(card_data) before goto next_card to ensure proper cleanup
of the allocated memory in the error path.

Fixes: 5aaf9efffc ("kselftest: alsa: Add simplistic test for ALSA mixer controls kselftest")
Signed-off-by: Malaya Kumar Rout <malayarout91@gmail.com>
Link: https://patch.msgid.link/20260704105736.94874-1-malayarout91@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Malaya Kumar Rout 2026-07-04 16:27:36 +05:30 committed by Takashi Iwai
parent b28d3d0841
commit cb89f0c1ae
1 changed files with 1 additions and 0 deletions
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tools/testing/selftests/alsa/mixer-test.c
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@ -84,6 +84,7 @@ static void find_controls(void)
if (err < 0) {
ksft_print_msg("Failed to get hctl for card %d: %s\n",
card, snd_strerror(err));
free(card_data);
goto next_card;
}