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/pinctrl/intel/Makefile | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 drivers/pinctrl/intel/Makefile (limited to 'drivers/pinctrl/intel/Makefile') diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile new file mode 100644 index 000000000..d0d868c9a --- /dev/null +++ b/drivers/pinctrl/intel/Makefile @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: GPL-2.0 +# Intel pin control drivers + +obj-$(CONFIG_PINCTRL_BAYTRAIL) += pinctrl-baytrail.o +obj-$(CONFIG_PINCTRL_CHERRYVIEW) += pinctrl-cherryview.o +obj-$(CONFIG_PINCTRL_LYNXPOINT) += pinctrl-lynxpoint.o +obj-$(CONFIG_PINCTRL_TANGIER) += pinctrl-tangier.o +obj-$(CONFIG_PINCTRL_MERRIFIELD) += pinctrl-merrifield.o +obj-$(CONFIG_PINCTRL_MOOREFIELD) += pinctrl-moorefield.o +obj-$(CONFIG_PINCTRL_INTEL) += pinctrl-intel.o +obj-$(CONFIG_PINCTRL_INTEL_PLATFORM) += pinctrl-intel-platform.o +obj-$(CONFIG_PINCTRL_ALDERLAKE) += pinctrl-alderlake.o +obj-$(CONFIG_PINCTRL_BROXTON) += pinctrl-broxton.o +obj-$(CONFIG_PINCTRL_CANNONLAKE) += pinctrl-cannonlake.o +obj-$(CONFIG_PINCTRL_CEDARFORK) += pinctrl-cedarfork.o +obj-$(CONFIG_PINCTRL_DENVERTON) += pinctrl-denverton.o +obj-$(CONFIG_PINCTRL_ELKHARTLAKE) += pinctrl-elkhartlake.o +obj-$(CONFIG_PINCTRL_EMMITSBURG) += pinctrl-emmitsburg.o +obj-$(CONFIG_PINCTRL_GEMINILAKE) += pinctrl-geminilake.o +obj-$(CONFIG_PINCTRL_ICELAKE) += pinctrl-icelake.o +obj-$(CONFIG_PINCTRL_JASPERLAKE) += pinctrl-jasperlake.o +obj-$(CONFIG_PINCTRL_LAKEFIELD) += pinctrl-lakefield.o +obj-$(CONFIG_PINCTRL_LEWISBURG) += pinctrl-lewisburg.o +obj-$(CONFIG_PINCTRL_METEORLAKE) += pinctrl-meteorlake.o +obj-$(CONFIG_PINCTRL_METEORPOINT) += pinctrl-meteorpoint.o +obj-$(CONFIG_PINCTRL_SUNRISEPOINT) += pinctrl-sunrisepoint.o +obj-$(CONFIG_PINCTRL_TIGERLAKE) += pinctrl-tigerlake.o -- cgit v1.3.1