linux-kernel - [PATCH 5.17 041/219] ALSA: intel8x0: Fix the missing snd_card

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 18 Apr 2022 14:10:10 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 5.17 041/219] ALSA: intel8x0: Fix the missing snd_card_free() call at probe error

From: Takashi Iwai <tiwai@...e.de>

commit 71b21f5f8970a87f034138454ebeff0608d24875 upstream.

The previous cleanup with devres may lead to the incorrect release
orders at the probe error handling due to the devres's nature.  Until
we register the card, snd_card_free() has to be called at first for
releasing the stuff properly when the driver tries to manage and
release the stuff via card->private_free().

This patch fixes it by calling snd_card_free() on the error from the
probe callback using a new helper function.

Fixes: 7835e0901e24 ("ALSA: intel8x0: Allocate resources with device-managed APIs")
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20220412102636.16000-19-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/pci/intel8x0.c  |   10 ++++++++--
 sound/pci/intel8x0m.c |   10 ++++++++--
 2 files changed, 16 insertions(+), 4 deletions(-)

--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -3109,8 +3109,8 @@ static int check_default_spdif_aclink(st
 	return 0;
 }
 
-static int snd_intel8x0_probe(struct pci_dev *pci,
-			      const struct pci_device_id *pci_id)
+static int __snd_intel8x0_probe(struct pci_dev *pci,
+				const struct pci_device_id *pci_id)
 {
 	struct snd_card *card;
 	struct intel8x0 *chip;
@@ -3189,6 +3189,12 @@ static int snd_intel8x0_probe(struct pci
 	return 0;
 }
 
+static int snd_intel8x0_probe(struct pci_dev *pci,
+			      const struct pci_device_id *pci_id)
+{
+	return snd_card_free_on_error(&pci->dev, __snd_intel8x0_probe(pci, pci_id));
+}
+
 static struct pci_driver intel8x0_driver = {
 	.name = KBUILD_MODNAME,
 	.id_table = snd_intel8x0_ids,
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -1178,8 +1178,8 @@ static struct shortname_table {
 	{ 0 },
 };
 
-static int snd_intel8x0m_probe(struct pci_dev *pci,
-			       const struct pci_device_id *pci_id)
+static int __snd_intel8x0m_probe(struct pci_dev *pci,
+				 const struct pci_device_id *pci_id)
 {
 	struct snd_card *card;
 	struct intel8x0m *chip;
@@ -1225,6 +1225,12 @@ static int snd_intel8x0m_probe(struct pc
 	return 0;
 }
 
+static int snd_intel8x0m_probe(struct pci_dev *pci,
+			       const struct pci_device_id *pci_id)
+{
+	return snd_card_free_on_error(&pci->dev, __snd_intel8x0m_probe(pci, pci_id));
+}
+
 static struct pci_driver intel8x0m_driver = {
 	.name = KBUILD_MODNAME,
 	.id_table = snd_intel8x0m_ids,