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Filename Latest commit message Latest commit date
Anders Roxell 7d4de60d6d dmaengine: ti: edma: Fix memory allocation size for queue_priority_map
[ Upstream commit e63419dbf2ceb083c1651852209c7f048089ac0f ]

Fix a critical memory allocation bug in edma_setup_from_hw() where
queue_priority_map was allocated with insufficient memory. The code
declared queue_priority_map as s8 (*)[2] (pointer to array of 2 s8),
but allocated memory using sizeof(s8) instead of the correct size.

This caused out-of-bounds memory writes when accessing:
  queue_priority_map[i][0] = i;
  queue_priority_map[i][1] = i;

The bug manifested as kernel crashes with "Oops - undefined instruction"
on ARM platforms (BeagleBoard-X15) during EDMA driver probe, as the
memory corruption triggered kernel hardening features on Clang.

Change the allocation to use sizeof(*queue_priority_map) which
automatically gets the correct size for the 2D array structure.

Fixes: 2b6b3b7420 ("ARM/dmaengine: edma: Merge the two drivers under drivers/dma/")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Link: https://lore.kernel.org/r/20250830094953.3038012-1-anders.roxell@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-02 13:34:29 +02:00
arch KVM: x86: Take irqfds.lock when adding/deleting IRQ bypass producer 2025-09-09 18:44:00 +02:00
block
certs
crypto
Documentation Documentation: ACPI: Fix parent device references 2025-08-28 16:21:23 +02:00
drivers dmaengine: ti: edma: Fix memory allocation size for queue_priority_map 2025-10-02 13:34:29 +02:00
fs fuse: prevent overflow in copy_file_range return value 2025-10-02 13:34:28 +02:00
include genirq: Provide new interfaces for affinity hints 2025-10-02 13:34:29 +02:00
init
ipc
kernel genirq: Provide new interfaces for affinity hints 2025-10-02 13:34:29 +02:00
lib lib: test_objagg: Set error message in check_expect_hints_stats() 2025-07-17 18:24:56 +02:00
LICENSES
mm mm/khugepaged: fix the address passed to notifier on testing young 2025-10-02 13:34:28 +02:00
net can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails 2025-10-02 13:34:29 +02:00
samples samples: mei: Fix building on musl libc 2025-08-28 16:21:19 +02:00
scripts randstruct: gcc-plugin: Fix attribute addition 2025-09-09 18:44:01 +02:00
security securityfs: don't pin dentries twice, once is enough... 2025-08-28 16:21:24 +02:00
sound ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model 2025-09-09 18:44:01 +02:00
tools act_mirred: use the backlog for nested calls to mirred ingress 2025-08-28 16:21:36 +02:00
usr
virt
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.cocciconfig
.get_maintainer.ignore
.gitattributes
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COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.299 2025-09-09 18:44:02 +02:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.