This is a note to let you know that I've just added the patch titled
hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new()
to the 4.14-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:
hwmon-coretemp-fix-pci-device-refcount-leak-in-nv1a_.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit db5da98bc2c3fd739cd0b7b1bcd36da5052a8f7e
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Fri Nov 18 17:33:03 2022 +0800
hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new()
[ Upstream commit 7dec14537c5906b8bf40fd6fd6d9c3850f8df11d ]
As comment of pci_get_domain_bus_and_slot() says, it returns
a pci device with refcount increment, when finish using it,
the caller must decrement the reference count by calling
pci_dev_put(). So call it after using to avoid refcount leak.
Fixes: 14513ee696a0 ("hwmon: (coretemp) Use PCI host bridge ID to identify CPU if necessary")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221118093303.214163-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index ee35bbc1714a..770bf76a5348 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -255,10 +255,13 @@ static int adjust_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev)
*/
if (host_bridge && host_bridge->vendor == PCI_VENDOR_ID_INTEL) {
for (i = 0; i < ARRAY_SIZE(tjmax_pci_table); i++) {
- if (host_bridge->device == tjmax_pci_table[i].device)
+ if (host_bridge->device == tjmax_pci_table[i].device) {
+ pci_dev_put(host_bridge);
return tjmax_pci_table[i].tjmax;
+ }
}
}
+ pci_dev_put(host_bridge);
for (i = 0; i < ARRAY_SIZE(tjmax_table); i++) {
if (strstr(c->x86_model_id, tjmax_table[i].id))
