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Chen-Yu Tsai edf5c89202
ASoC: SOF: Fix function topology name check in profile info output 
The function topology feature, and the plat_data->machine field that
specifies this feature, is ACPI specific. The check didn't take this
into consideration, which causes a NULL pointer dereference splat on
OF platforms:

    BUG: KASAN: null-ptr-deref in sof_create_ipc_file_profile (sound/soc/sof/fw-file-profile.c:291 sound/soc/sof/fw-file-profile.c:340) snd_sof
    Read of size 8 at addr 00000000000000c8 by task (udev-worker)/247

    CPU: 7 UID: 0 PID: 247 Comm: (udev-worker) Not tainted 6.18.0-rc2-next-20251023-03804-g93b191bc0c26-dirty #747 PREEMPT  ba3c303a11d89508de4087cb5b4f8985b6d87b6f
    Hardware name: Google Ciri sku2 board (DT)
    Call trace:
    [KASAN stuff]
    sof_create_ipc_file_profile (sound/soc/sof/fw-file-profile.c:291 sound/soc/sof/fw-file-profile.c:340) snd_sof
    snd_sof_device_probe (sound/soc/sof/core.c:304 sound/soc/sof/core.c:388 sound/soc/sof/core.c:460 sound/soc/sof/core.c:719) snd_sof
    sof_of_probe (sound/soc/sof/sof-of-dev.c:84) snd_sof_of
     platform_probe (drivers/base/platform.c:1405)
    [...]

Check that the ACPI specific field is actually valid before accessing
it.

This was seen on a MediaTek based Chromebook.

Fixes: 2b92b98cc4 ("ASoC: SOF: Don't print the monolithic topology name if function topology may be used")
Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://patch.msgid.link/20251023061226.1127345-1-wenst@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-10-23 13:42:47 +01:00
arch - Reset the why-the-system-rebooted register on AMD to avoid stale bits 2025-10-19 04:41:27 -10:00
block block-6.18-20251016 2025-10-17 08:31:26 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This push contains the following changes: 2025-10-10 08:56:16 -07:00
Documentation ASoC: spacemit: add i2s support to K1 SoC 2025-10-21 19:05:24 +01:00
drivers ASoC: greybus: use snd_kcontrol_chip() instead of snd_soc_kcontrol_component() 2025-10-20 02:42:14 +01:00
fs Description for this pull request: 2025-10-18 07:23:59 -10:00
include ASoC: use snd_kcontrol_chip() instead of 2025-10-21 19:05:28 +01:00
init printk changes for 6.18 2025-10-04 11:13:11 -07:00
io_uring io_uring/rw: check for NULL io_br_sel when putting a buffer 2025-10-15 13:38:53 -06:00
ipc namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
kernel - Make sure the check for lost pelt idle time is done unconditionally to 2025-10-19 04:59:43 -10:00
lib lib/test_kho: use kho_preserve_vmalloc instead of storing addresses in fdt 2025-10-07 13:48:56 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm slab: reset slab->obj_ext when freeing and it is OBJEXTS_ALLOC_FAIL 2025-10-16 15:16:45 +02:00
net bpf-fixes 2025-10-18 08:00:43 -10:00
rust rust: bitmap: fix formatting 2025-10-17 13:02:22 +02:00
samples Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
scripts Kbuild fixes for 6.18 #1 2025-10-11 15:47:12 -07:00
security integrity-v6.18 2025-10-05 10:48:33 -07:00
sound ASoC: SOF: Fix function topology name check in profile info output 2025-10-23 13:42:47 +01:00
tools hid-for-linus-2025101701 2025-10-18 08:18:18 -10:00
usr gen_init_cpio: Ignore fsync() returning EINVAL on pipes 2025-10-07 09:53:05 -07:00
virt KVM x86 fixes for 6.18: 2025-10-18 10:25:43 +02:00
.clang-format memblock: drop for_each_free_mem_pfn_range_in_zone_from() 2025-09-14 08:49:03 +03:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore .gitignore: ignore compile_commands.json globally 2025-08-12 15:53:55 -07:00
.mailmap Including fixes from CAN 2025-10-16 09:41:21 -07:00
.pylintrc tools: docs: parse-headers.py: move it from sphinx dir 2025-08-29 15:54:42 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS USB/Thunderbolt changes for 6.18-rc1 2025-10-04 16:07:08 -07:00
Kbuild sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS Including fixes from CAN 2025-10-16 09:41:21 -07:00
Makefile Linux 6.18-rc2 2025-10-19 15:19:16 -10:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.