6.6-stable review patch. If anyone has any objections, please let me know.
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From: Haotian Zhang vulab@iscas.ac.cn
[ Upstream commit 5032347c04ba7ff9ba878f262e075d745c06a2a8 ]
When pdacf_config() fails, snd_pdacf_probe() returns the error code directly without freeing the sound card resources allocated by snd_card_new(), which leads to a memory leak.
Add proper error handling to free the sound card and clear the card list entry when pdacf_config() fails.
Fixes: 15b99ac17295 ("[PATCH] pcmcia: add return value to _config() functions") Suggested-by: Takashi Iwai tiwai@suse.de Signed-off-by: Haotian Zhang vulab@iscas.ac.cn Link: https://patch.msgid.link/20251215090433.211-1-vulab@iscas.ac.cn Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- sound/pcmcia/pdaudiocf/pdaudiocf.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.c b/sound/pcmcia/pdaudiocf/pdaudiocf.c index 8363ec08df5d..4468d81683ec 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf.c @@ -132,7 +132,13 @@ static int snd_pdacf_probe(struct pcmcia_device *link) link->config_index = 1; link->config_regs = PRESENT_OPTION;
- return pdacf_config(link); + err = pdacf_config(link); + if (err < 0) { + card_list[i] = NULL; + snd_card_free(card); + return err; + } + return 0; }