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Josh Poimboeuf 76e51db43f objtool, spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq()
If speed_hz < AMD_SPI_MIN_HZ, amd_set_spi_freq() iterates over the
entire amd_spi_freq array without breaking out early, causing 'i' to go
beyond the array bounds.

Fix that by stopping the loop when it gets to the last entry, so the low
speed_hz value gets clamped up to AMD_SPI_MIN_HZ.

Fixes the following warning with an UBSAN kernel:

  drivers/spi/spi-amd.o: error: objtool: amd_set_spi_freq() falls through to next function amd_spi_set_opcode()

Fixes: 3fe26121dc ("spi: amd: Configure device speed")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Cc: Raju Rangoju <Raju.Rangoju@amd.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/78fef0f2434f35be9095bcc9ffa23dd8cab667b9.1742852847.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/r/202503161828.RUk9EhWx-lkp@intel.com/
2025-03-25 23:00:03 +01:00
arch objtool: Fix X86_FEATURE_SMAP alternative handling 2025-03-25 09:20:26 +01:00
block cgroup: Changes for v6.15 2025-03-24 16:49:40 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
Documentation x86/build updates for v6.15: 2025-03-24 22:23:23 -07:00
drivers objtool, spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq() 2025-03-25 23:00:03 +01:00
fs Scheduler updates for v6.15: 2025-03-24 21:28:12 -07:00
include objtool: Fix up some outdated references to ENTRY/ENDPROC 2025-03-25 09:20:27 +01:00
init [ Merge note: this pull request depends on you having merged 2025-03-24 22:06:11 -07:00
io_uring io_uring-6.14-20250322 2025-03-22 10:45:44 -07:00
ipc treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
kernel [ Merge note: this pull request depends on you having merged 2025-03-24 22:06:11 -07:00
lib [ Merge note: this pull request depends on you having merged 2025-03-24 22:06:11 -07:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm [ Merge note: this pull request depends on you having merged 2025-03-24 22:06:11 -07:00
net vfs-6.15-rc1.afs 2025-03-24 13:15:16 -07:00
rust Locking changes for v6.15: 2025-03-24 20:55:03 -07:00
samples hardening updates for v6.15-rc1 2025-03-24 15:18:08 -07:00
scripts objtool: Remove --no-unreachable for noinstr-only vmlinux.o runs 2025-03-25 09:20:27 +01:00
security hardening updates for v6.15-rc1 2025-03-24 15:18:08 -07:00
sound ASoC: Fixes for v6.14 2025-03-13 07:33:48 +01:00
tools objtool: Remove redundant opts.noinstr dependency 2025-03-25 09:20:28 +01:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-05 04:06:45 +09:00
virt vfs-6.15-rc1.misc 2025-03-24 09:13:50 -07:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-01-10 00:17:25 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: use host dylib naming convention to support macOS 2025-01-10 01:01:24 +01:00
.mailmap platform-drivers-x86 for v6.14-5 2025-03-14 10:57:28 -10:00
.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 MAINTAINERS: Move Pavel to kernel.org address 2025-02-07 09:12:33 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS bitmap changes for 6.15 2025-03-24 19:11:58 -07:00
Makefile [ Merge note: this pull request depends on you having merged 2025-03-24 22:06:11 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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.