[PATCH 5.4 161/215] init: open /initrd.image with O_LARGEFILE

Greg Kroah-Hartman
2024-04-11T10:21:52Z

From: John Sperbeck <jsperbeck@google.com>

[ Upstream commit 4624b346cf67400ef46a31771011fb798dd2f999 ]

If initrd data is larger than 2Gb, we'll eventually fail to write to the
/initrd.image file when we hit that limit, unless O_LARGEFILE is set.

Link: https://lkml.kernel.org/r/20240317221522.896040-1-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: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
init/initramfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/init/initramfs.c b/init/initramfs.c
index 1bc854fdf8302..b362b57c047d5 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -630,7 +630,7 @@ static void __init populate_initrd_image(char *err)

printk(KERN_INFO "rootfs image is not initramfs (%s); looks like an initrd\n",
err);
- file = filp_open("/initrd.image", O_WRONLY | O_CREAT, 0700);
+ file = filp_open("/initrd.image", O_WRONLY|O_CREAT|O_LARGEFILE, 0700);
if (IS_ERR(file))
return;

--
2.43.0