This is a note to let you know that I've just added the patch titled
mmc: sdhci-pci: Fix possible memory leak caused by missing pci_dev_put()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-sdhci-pci-fix-possible-memory-leak-caused-by-missing-pci_dev_put.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 222cfa0118aa68687ace74aab8fdf77ce8fbd7e6 Mon Sep 17 00:00:00 2001
From: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx>
Date: Mon, 14 Nov 2022 16:31:00 +0800
Subject: mmc: sdhci-pci: Fix possible memory leak caused by missing pci_dev_put()
From: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx>
commit 222cfa0118aa68687ace74aab8fdf77ce8fbd7e6 upstream.
pci_get_device() will increase the reference count for the returned
pci_dev. We need to use pci_dev_put() to decrease the reference count
before amd_probe() returns. There is no problem for the 'smbus_dev ==
NULL' branch because pci_dev_put() can also handle the NULL input
parameter case.
Fixes: 659c9bc114a8 ("mmc: sdhci-pci: Build o2micro support in the same module")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20221114083100.149200-1-wangxiongfeng2@xxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-pci-core.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -1818,6 +1818,8 @@ static int amd_probe(struct sdhci_pci_ch
}
}
+ pci_dev_put(smbus_dev);
+
if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
Patches currently in stable-queue which might be from wangxiongfeng2@xxxxxxxxxx are
queue-5.15/mmc-sdhci-pci-fix-possible-memory-leak-caused-by-missing-pci_dev_put.patch
