linux-stable/init
John Sperbeck 8434f9aa6b init: open output files from cpio unpacking with O_LARGEFILE
If a member of a cpio archive for an initrd or initrams is larger than
2Gb, we'll eventually fail to write to that file when we get to that
limit, unless O_LARGEFILE is set.

The problem can be seen with this recipe, assuming that BLK_DEV_RAM
is not configured:

cd /tmp
dd if=/dev/zero of=BIGFILE bs=1048576 count=2200
echo BIGFILE | cpio -o -H newc -R root:root > initrd.img
kexec -l /boot/vmlinuz-$(uname -r) --initrd=initrd.img --reuse-cmdline
kexec -e

The console will show 'Initramfs unpacking failed: write error'.  With
the patch, the error is gone.

Link: https://lkml.kernel.org/r/20240323152934.3307391-1-jsperbeck@google.com
Signed-off-by: John Sperbeck <jsperbeck@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-04-05 11:21:30 -07:00
..
.gitignore kbuild: build init/built-in.a just once 2022-09-29 04:40:15 +09:00
build-version kbuild: build init/built-in.a just once 2022-09-29 04:40:15 +09:00
calibrate.c
do_mounts.c init: flush async file closing 2024-02-08 18:41:03 +01:00
do_mounts.h init: flush async file closing 2024-02-08 18:41:03 +01:00
do_mounts_initrd.c init: pass root_device_name explicitly 2023-06-05 10:55:20 -06:00
do_mounts_rd.c init: add an init_unlink helper 2020-07-31 08:17:52 +02:00
init_task.c rcu-tasks: Initialize data to eliminate RCU-tasks/do_exit() deadlocks 2024-02-25 14:21:43 -08:00
initramfs.c init: open output files from cpio unpacking with O_LARGEFILE 2024-04-05 11:21:30 -07:00
Kconfig RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
main.c - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min 2024-03-14 18:03:09 -07:00
Makefile x86/retpoline: Make sure there are no unconverted return thunks due to KCSAN 2023-10-20 13:02:23 +02:00
noinitramfs.c init: move usermodehelper_enable() to populate_rootfs() 2021-09-08 11:50:27 -07:00
version-timestamp.c init/version-timestamp.c: remove unneeded #include <linux/version.h> 2023-01-09 07:34:38 +09:00
version.c init/version.c: Replace strlcpy with strscpy 2023-09-22 09:50:56 -07:00