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Jared Kangas 583ac7f657 pinctrl: s32cc: fix uninitialized memory in s32_pinctrl_desc 
[ Upstream commit 97ea34defb ]

s32_pinctrl_desc is allocated with devm_kmalloc(), but not all of its
fields are initialized. Notably, num_custom_params is used in
pinconf_generic_parse_dt_config(), resulting in intermittent allocation
errors, such as the following splat when probing i2c-imx:

        WARNING: CPU: 0 PID: 176 at mm/page_alloc.c:4795 __alloc_pages_noprof+0x290/0x300
        [...]
        Hardware name: NXP S32G3 Reference Design Board 3 (S32G-VNP-RDB3) (DT)
        [...]
        Call trace:
         __alloc_pages_noprof+0x290/0x300 (P)
         ___kmalloc_large_node+0x84/0x168
         __kmalloc_large_node_noprof+0x34/0x120
         __kmalloc_noprof+0x2ac/0x378
         pinconf_generic_parse_dt_config+0x68/0x1a0
         s32_dt_node_to_map+0x104/0x248
         dt_to_map_one_config+0x154/0x1d8
         pinctrl_dt_to_map+0x12c/0x280
         create_pinctrl+0x6c/0x270
         pinctrl_get+0xc0/0x170
         devm_pinctrl_get+0x50/0xa0
         pinctrl_bind_pins+0x60/0x2a0
         really_probe+0x60/0x3a0
        [...]
         __platform_driver_register+0x2c/0x40
         i2c_adap_imx_init+0x28/0xff8 [i2c_imx]
        [...]

This results in later parse failures that can cause issues in dependent
drivers:

        s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c0-pins/i2c0-grp0: could not parse node property
        s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c0-pins/i2c0-grp0: could not parse node property
        [...]
        pca953x 0-0022: failed writing register: -6
        i2c i2c-0: IMX I2C adapter registered
        s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c2-pins/i2c2-grp0: could not parse node property
        s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c2-pins/i2c2-grp0: could not parse node property
        i2c i2c-1: IMX I2C adapter registered
        s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c4-pins/i2c4-grp0: could not parse node property
        s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c4-pins/i2c4-grp0: could not parse node property
        i2c i2c-2: IMX I2C adapter registered

Fix this by initializing s32_pinctrl_desc with devm_kzalloc() instead of
devm_kmalloc() in s32_pinctrl_probe(), which sets the previously
uninitialized fields to zero.

Fixes: fd84aaa817 ("pinctrl: add NXP S32 SoC family support")
Signed-off-by: Jared Kangas <jkangas@redhat.com>
Tested-by: Jan Petrous (OSS) <jan.petrous@oss.nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-01 11:43:33 +01:00
arch LoongArch: Don't panic if no valid cache info for PCI 2025-12-01 11:43:25 +01:00
block blk-cgroup: fix possible deadlock while configuring policy 2025-11-13 15:34:07 -05:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: essiv - Check ssize for decryption and in-place encryption 2025-10-19 16:33:42 +02:00
Documentation platform/x86: msi-wmi-platform: Fix typo in WMI GUID 2025-12-01 11:43:30 +01:00
drivers pinctrl: s32cc: fix uninitialized memory in s32_pinctrl_desc 2025-12-01 11:43:33 +01:00
fs smb: client: introduce close_cached_dir_locked() 2025-12-01 11:43:22 +01:00
include xfrm: Determine inner GSO type from packet inner protocol 2025-12-01 11:43:29 +01:00
init init: handle bootloader identifier in kernel parameters 2025-10-19 16:33:50 +02:00
io_uring io_uring/napi: fix io_napi_entry RCU accesses 2025-11-24 10:36:06 +01:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel timers: Fix NULL function pointer race in timer_shutdown_sync() 2025-12-01 11:43:18 +01:00
lib lib/crypto: curve25519-hacl64: Fix older clang KASAN workaround for GCC 2025-11-13 15:34:40 -05:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm/mempool: fix poisoning order>0 pages with HIGHMEM 2025-12-01 11:43:23 +01:00
net net: openvswitch: remove never-working support for setting nsh fields 2025-12-01 11:43:31 +01:00
rust rust: kbuild: workaround rustdoc doctests modifier bug 2025-11-24 10:36:07 +01:00
samples ftrace/samples: Fix function size computation 2025-09-19 16:35:44 +02:00
scripts gcc-plugins: Remove TODO_verify_il for GCC >= 16 2025-10-06 11:17:52 +02:00
security ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr 2025-11-13 15:34:32 -05:00
sound ALSA: hda: Fix missing pointer check in hda_component_manager_init function 2025-11-24 10:36:06 +01:00
tools selftests: net: lib: Do not overwrite error messages 2025-12-01 11:43:32 +01:00
usr kbuild: uapi: Strip comments before size type check 2025-11-13 15:34:35 -05:00
virt KVM: guest_memfd: Remove bindings on memslot deletion when gmem is dying 2025-11-24 10:36:06 +01:00
.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 2025-08-01 09:48:44 +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 Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.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: Remove self from DSA entry 2024-11-03 12:52:38 -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 MAINTAINERS: Update Alexey Makhalov's email address 2025-05-22 14:29:46 +02:00
Makefile Linux 6.12.59 2025-11-24 10:36:08 +01:00
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.