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 --- lib/fonts/Makefile | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 lib/fonts/Makefile (limited to 'lib/fonts/Makefile') diff --git a/lib/fonts/Makefile b/lib/fonts/Makefile new file mode 100644 index 000000000..7202a70a5 --- /dev/null +++ b/lib/fonts/Makefile @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0 +# Font handling + +font-y := fonts.o +font-$(CONFIG_FRAMEBUFFER_CONSOLE_ROTATION) += font_rotate.o + +# Built-in fonts; sorted by Family-Size in ascending order +font-$(CONFIG_FONT_6x8) += font_6x8.o +font-$(CONFIG_FONT_6x10) += font_6x10.o +font-$(CONFIG_FONT_6x11) += font_6x11.o +font-$(CONFIG_FONT_7x14) += font_7x14.o +font-$(CONFIG_FONT_8x8) += font_8x8.o +font-$(CONFIG_FONT_8x16) += font_8x16.o +font-$(CONFIG_FONT_10x18) += font_10x18.o +font-$(CONFIG_FONT_ACORN_8x8) += font_acorn_8x8.o +font-$(CONFIG_FONT_MINI_4x6) += font_mini_4x6.o +font-$(CONFIG_FONT_PEARL_8x8) += font_pearl_8x8.o +font-$(CONFIG_FONT_SUN8x16) += font_sun8x16.o +font-$(CONFIG_FONT_SUN12x22) += font_sun12x22.o +font-$(CONFIG_FONT_TER10x18) += font_ter10x18.o +font-$(CONFIG_FONT_TER16x32) += font_ter16x32.o + +obj-$(CONFIG_FONT_SUPPORT) += font.o -- cgit v1.3.1