linux-kernel - [PATCH] initramfs: remove duplicate built-in __initramfs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date: Thu, 11 Jan 2024 17:22:40 +1100
From: David Disseldorp <ddiss@...e.de>
To: Christoph Hellwig <hch@....de>
Cc: linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	David Disseldorp <ddiss@...e.de>
Subject: [PATCH] initramfs: remove duplicate built-in __initramfs_start unpacking

If initrd_start cpio extraction fails, CONFIG_BLK_DEV_RAM triggers
fallback to initrd.image handling via populate_initrd_image().
The populate_initrd_image() call follows successful extraction of any
built-in cpio archive at __initramfs_start, but currently performs
built-in archive extraction a second time.

Prior to commit b2a74d5f9d446 ("initramfs: remove clean_rootfs"),
the second built-in initramfs unpack call was used to repopulate entries
removed by clean_rootfs(), but it's no longer necessary now the contents
of the previous extraction are retained.

Signed-off-by: David Disseldorp <ddiss@...e.de>
---
 init/initramfs.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/init/initramfs.c b/init/initramfs.c
index 8d0fd946cdd2b..2edd3007a6857 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -669,8 +669,6 @@ static void __init populate_initrd_image(char *err)
 	struct file *file;
 	loff_t pos = 0;

-	unpack_to_rootfs(__initramfs_start, __initramfs_size);
-
 	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);
-- 
2.35.3