diff options
| author | Shivank Garg <shivankg@amd.com> | 2026-08-22 19:22:05 +0000 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2026-09-09 17:51:44 +0530 |
| commit | e873c74132f0c5f1452816cd9bb26208f0bba1e1 (patch) | |
| tree | cc1ce1567f5b982359331863ebd9da38741f8d2e /lib/fonts/Makefile | |
| download | linux-stable-e873c74132f0c5f1452816cd9bb26208f0bba1e1.tar.gz linux-stable-e873c74132f0c5f1452816cd9bb26208f0bba1e1.zip | |
dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()grafted
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 <sashiko-bot@kernel.org>
Link: https://sashiko.dev/#/patchset/20260518-dmaengine-kref-fix-v1-1-4d6125048fb7@amd.com
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Shivank Garg <shivankg@amd.com>
Link: https://patch.msgid.link/20260822-dmaengine-kref-fix-v5-3-d4a4ee47d927@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'lib/fonts/Makefile')
| -rw-r--r-- | lib/fonts/Makefile | 23 |
1 files changed, 23 insertions, 0 deletions
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 |