From e873c74132f0c5f1452816cd9bb26208f0bba1e1 Mon Sep 17 00:00:00 2001 From: Shivank Garg Date: Sat, 22 Aug 2026 19:22:05 +0000 Subject: dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() When dma_device_put() drops the last reference on chan->device->ref, dma_device_release() runs and may free the dma_device along with its channels. dma_chan_put() then still reads chan->device->owner via dma_chan_to_owner() for the trailing module_put(). KASAN catches it: slab-use-after-free in dma_chan_put+0x3e6/0x4c0 Read of size 8 by task insmod/6319 Freed by task 6319: kfree+0x225/0x470 dma_chan_put+0x395/0x4c0 dmaengine_put+0xf8/0x160 Cache the module owner in dma_chan_put() before the put so the trailing module_put() does not need chan->device. Fixes: 8ad342a86359 ("dmaengine: Add reference counting to dma_device struct") Suggested-by: Sashiko Link: https://sashiko.dev/#/patchset/20260518-dmaengine-kref-fix-v1-1-4d6125048fb7@amd.com Reviewed-by: Frank Li Reviewed-by: Logan Gunthorpe Signed-off-by: Shivank Garg Link: https://patch.msgid.link/20260822-dmaengine-kref-fix-v5-3-d4a4ee47d927@amd.com Signed-off-by: Vinod Koul --- drivers/extcon/Makefile | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 drivers/extcon/Makefile (limited to 'drivers/extcon/Makefile') diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile new file mode 100644 index 000000000..6482f2bfd --- /dev/null +++ b/drivers/extcon/Makefile @@ -0,0 +1,30 @@ +# SPDX-License-Identifier: GPL-2.0 + +# Makefile for external connector class (extcon) devices +# + +obj-$(CONFIG_EXTCON) += extcon-core.o +extcon-core-objs += extcon.o devres.o +obj-$(CONFIG_EXTCON_ADC_JACK) += extcon-adc-jack.o +obj-$(CONFIG_EXTCON_AXP288) += extcon-axp288.o +obj-$(CONFIG_EXTCON_FSA9480) += extcon-fsa9480.o +obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o +obj-$(CONFIG_EXTCON_INTEL_INT3496) += extcon-intel-int3496.o +obj-$(CONFIG_EXTCON_INTEL_CHT_WC) += extcon-intel-cht-wc.o +obj-$(CONFIG_EXTCON_INTEL_MRFLD) += extcon-intel-mrfld.o +obj-$(CONFIG_EXTCON_LC824206XA) += extcon-lc824206xa.o +obj-$(CONFIG_EXTCON_MAX14577) += extcon-max14577.o +obj-$(CONFIG_EXTCON_MAX3355) += extcon-max3355.o +obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o +obj-$(CONFIG_EXTCON_MAX77843) += extcon-max77843.o +obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o +obj-$(CONFIG_EXTCON_MAX14526) += extcon-max14526.o +obj-$(CONFIG_EXTCON_PALMAS) += extcon-palmas.o +obj-$(CONFIG_EXTCON_PTN5150) += extcon-ptn5150.o +obj-$(CONFIG_EXTCON_QCOM_SPMI_MISC) += extcon-qcom-spmi-misc.o +obj-$(CONFIG_EXTCON_RT8973A) += extcon-rt8973a.o +obj-$(CONFIG_EXTCON_SM5502) += extcon-sm5502.o +obj-$(CONFIG_EXTCON_USB_GPIO) += extcon-usb-gpio.o +obj-$(CONFIG_EXTCON_USBC_CROS_EC) += extcon-usbc-cros-ec.o +obj-$(CONFIG_EXTCON_USBC_TUSB320) += extcon-usbc-tusb320.o +obj-$(CONFIG_EXTCON_RTK_TYPE_C) += extcon-rtk-type-c.o -- cgit v1.3.1