linux/init
Sun Jian 499f86de4f init/main: read bootconfig header with get_unaligned_le32()
get_boot_config_from_initrd() scans up to 3 bytes before initrd_end to
handle GRUB 4-byte alignment.  As a result, the bootconfig header
immediately preceding the magic may be unaligned.

Read the size and checksum fields with get_unaligned_le32() instead of
casting to u32 * and using le32_to_cpu(), avoiding potential unaligned
access and silencing sparse "cast to restricted __le32" warnings.

Sparse warnings (gcc + C=1):
  init/main.c:292:16: warning: cast to restricted __le32
  init/main.c:293:16: warning: cast to restricted __le32

No functional change intended.

Link: https://lkml.kernel.org/r/20260113101532.1630770-1-sun.jian.kdev@gmail.com
Signed-off-by: Sun Jian <sun.jian.kdev@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-01-26 19:07:14 -08:00
..
.gitignore kbuild: build init/built-in.a just once 2022-09-29 04:40:15 +09:00
.kunitconfig initramfs_test: kunit tests for initramfs unpacking 2025-03-08 12:13:04 +01:00
calibrate.c calibrate: update header inclusion 2025-11-27 14:24:45 -08:00
do_mounts.c Some filesystems use a kinda-sorta controlled dentry refcount leak to pin 2025-12-05 14:36:21 -08:00
do_mounts.h init: flush async file closing 2024-02-08 18:41:03 +01:00
do_mounts_initrd.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
do_mounts_rd.c initrd: Replace simple_strtol with kstrtoint to improve ramdisk_start_setup 2025-10-31 10:12:32 +01:00
init_task.c A large overhaul of the restartable sequences and CID management: 2025-12-02 08:48:53 -08:00
initramfs.c initramfs: Replace strcpy() with strscpy() in find_link() 2025-09-15 14:52:02 +02:00
initramfs_internal.h init: add initramfs_internal.h 2025-03-04 09:52:36 +01:00
initramfs_test.c initramfs_test: add filename padding test case 2025-08-21 12:00:10 -07:00
Kconfig Significant patch series in this pull request: 2025-12-06 14:01:20 -08:00
main.c init/main: read bootconfig header with get_unaligned_le32() 2026-01-26 19:07:14 -08:00
Makefile initramfs_test: kunit tests for initramfs unpacking 2025-03-08 12:13:04 +01:00
noinitramfs.c init: move usermodehelper_enable() to populate_rootfs() 2021-09-08 11:50:27 -07:00
version-timestamp.c ns: drop custom reference count initialization for initial namespaces 2025-11-11 10:01:32 +01:00
version.c init/version.c: Replace strlcpy with strscpy 2023-09-22 09:50:56 -07:00