From 27600805e62f800bacf990354632eae4e487d34c Mon Sep 17 00:00:00 2001 From: Yazen Ghannam Date: Thu, 3 Sep 2026 10:43:25 -0500 Subject: x86/amd_node: Fix PCI device reference counting in amd_smn_init() The local "root" pointer is a temporary variable used during the device search. Therefore, refcount related to the search iterators should be cleaned up after the search is complete. Use the __free() cleanup macro to ensure the refcount is decremented when the temporary pointer goes out of scope. Additionally, increment the refcount when caching a root pointer. This ensures the in-use refcount is separate from the temporary search refcounting. Finally, drop the redundant "root = NULL" before the second search loop. The pci_get_class() iterator always decrements the refcount of its "from" argument, so the first loop can only fall through with "root" already NULL. Fixes: 0a4b61d9c2e4 ("x86/amd_node: Fix AMD root device caching") Closes: https://sashiko.dev/#/patchset/20260806160159.230453-1-jason.andryuk%40amd.com Reported-by: Sashiko Assisted-by: LLM Signed-off-by: Yazen Ghannam Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Mario Limonciello (AMD) Cc: Link: https://patch.msgid.link/20260903154325.74343-1-yazen.ghannam@amd.com --- drivers/Kconfig | 256 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 256 insertions(+) create mode 100644 drivers/Kconfig (limited to 'drivers/Kconfig') diff --git a/drivers/Kconfig b/drivers/Kconfig new file mode 100644 index 000000000..f2bed2dde --- /dev/null +++ b/drivers/Kconfig @@ -0,0 +1,256 @@ +# SPDX-License-Identifier: GPL-2.0 +menu "Device Drivers" + +# Keep I/O buses first + +source "drivers/amba/Kconfig" +source "drivers/eisa/Kconfig" +source "drivers/pci/Kconfig" +source "drivers/cxl/Kconfig" +source "drivers/pcmcia/Kconfig" +source "drivers/rapidio/Kconfig" + +config PC104 + bool "PC/104 support" if EXPERT + help + Expose PC/104 form factor device drivers and options available for + selection and configuration. Enable this option if your target + machine has a PC/104 bus. + +source "drivers/base/Kconfig" + +source "drivers/bus/Kconfig" + +source "drivers/cache/Kconfig" + +source "drivers/connector/Kconfig" + +source "drivers/firmware/Kconfig" + +source "drivers/fwctl/Kconfig" + +source "drivers/gnss/Kconfig" + +source "drivers/mtd/Kconfig" + +source "drivers/of/Kconfig" + +source "drivers/parport/Kconfig" + +source "drivers/pnp/Kconfig" + +source "drivers/block/Kconfig" + +source "drivers/nvme/Kconfig" + +source "drivers/misc/Kconfig" + +source "drivers/scsi/Kconfig" + +source "drivers/ata/Kconfig" + +source "drivers/md/Kconfig" + +source "drivers/target/Kconfig" + +source "drivers/message/fusion/Kconfig" + +source "drivers/firewire/Kconfig" + +source "drivers/macintosh/Kconfig" + +source "drivers/net/Kconfig" + +# input before char - char/joystick depends on it. As does USB. + +source "drivers/input/Kconfig" + +source "drivers/char/Kconfig" + +source "drivers/i2c/Kconfig" + +source "drivers/i3c/Kconfig" + +source "drivers/spi/Kconfig" + +source "drivers/spmi/Kconfig" + +source "drivers/hsi/Kconfig" + +source "drivers/pps/Kconfig" + +source "drivers/ptp/Kconfig" + +source "drivers/dpll/Kconfig" + +source "drivers/pinctrl/Kconfig" + +source "drivers/gpio/Kconfig" + +source "drivers/w1/Kconfig" + +source "drivers/power/Kconfig" + +source "drivers/hwmon/Kconfig" + +source "drivers/thermal/Kconfig" + +source "drivers/watchdog/Kconfig" + +source "drivers/ssb/Kconfig" + +source "drivers/bcma/Kconfig" + +source "drivers/mfd/Kconfig" + +source "drivers/regulator/Kconfig" + +source "drivers/media/Kconfig" + +source "drivers/video/Kconfig" + +source "drivers/accel/Kconfig" + +source "sound/Kconfig" + +source "drivers/hid/Kconfig" + +source "drivers/usb/Kconfig" + +source "drivers/mmc/Kconfig" + +source "drivers/ufs/Kconfig" + +source "drivers/memstick/Kconfig" + +source "drivers/leds/Kconfig" + +source "drivers/accessibility/Kconfig" + +source "drivers/infiniband/Kconfig" + +source "drivers/edac/Kconfig" + +source "drivers/rtc/Kconfig" + +source "drivers/dma/Kconfig" + +source "drivers/dma-buf/Kconfig" + +source "drivers/dca/Kconfig" + +source "drivers/uio/Kconfig" + +source "drivers/vfio/Kconfig" + +source "drivers/virt/Kconfig" + +source "drivers/virtio/Kconfig" + +source "drivers/vdpa/Kconfig" + +source "drivers/vhost/Kconfig" + +source "drivers/hv/Kconfig" + +source "drivers/xen/Kconfig" + +source "drivers/greybus/Kconfig" + +source "drivers/comedi/Kconfig" + +source "drivers/gpib/Kconfig" + +source "drivers/staging/Kconfig" + +source "drivers/platform/Kconfig" + +source "drivers/clk/Kconfig" + +source "drivers/hwspinlock/Kconfig" + +source "drivers/clocksource/Kconfig" + +source "drivers/mailbox/Kconfig" + +source "drivers/iommu/Kconfig" + +source "drivers/remoteproc/Kconfig" + +source "drivers/rpmsg/Kconfig" + +source "drivers/soundwire/Kconfig" + +source "drivers/soc/Kconfig" + +source "drivers/pmdomain/Kconfig" + +source "drivers/devfreq/Kconfig" + +source "drivers/extcon/Kconfig" + +source "drivers/memory/Kconfig" + +source "drivers/iio/Kconfig" + +source "drivers/ntb/Kconfig" + +source "drivers/pwm/Kconfig" + +source "drivers/irqchip/Kconfig" + +source "drivers/ipack/Kconfig" + +source "drivers/reset/Kconfig" + +source "drivers/phy/Kconfig" + +source "drivers/powercap/Kconfig" + +source "drivers/mcb/Kconfig" + +source "drivers/perf/Kconfig" + +source "drivers/ras/Kconfig" + +source "drivers/thunderbolt/Kconfig" + +source "drivers/android/Kconfig" + +source "drivers/nvdimm/Kconfig" + +source "drivers/dax/Kconfig" + +source "drivers/nvmem/Kconfig" + +source "drivers/hwtracing/Kconfig" + +source "drivers/fpga/Kconfig" + +source "drivers/fsi/Kconfig" + +source "drivers/tee/Kconfig" + +source "drivers/mux/Kconfig" + +source "drivers/opp/Kconfig" + +source "drivers/siox/Kconfig" + +source "drivers/slimbus/Kconfig" + +source "drivers/interconnect/Kconfig" + +source "drivers/counter/Kconfig" + +source "drivers/most/Kconfig" + +source "drivers/peci/Kconfig" + +source "drivers/hte/Kconfig" + +source "drivers/cdx/Kconfig" + +source "drivers/resctrl/Kconfig" + +endmenu -- cgit v1.3.1