The patch titled Subject: initramfs: fix populate_initrd_image() section mismatch has been added to the -mm tree. Its filename is initramfs-fix-populate_initrd_image-section-mismatch.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/initramfs-fix-populate_initrd_image-section-mismatch.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/initramfs-fix-populate_initrd_image-section-mismatch.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Subject: initramfs: fix populate_initrd_image() section mismatch With gcc-4.6.3: WARNING: vmlinux.o(.text.unlikely+0x140): Section mismatch in reference from the function populate_initrd_image() to the variable .init.ramfs.info:__initramfs_size The function populate_initrd_image() references the variable __init __initramfs_size. This is often because populate_initrd_image lacks a __init annotation or the annotation of __initramfs_size is wrong. WARNING: vmlinux.o(.text.unlikely+0x14c): Section mismatch in reference from the function populate_initrd_image() to the function .init.text:unpack_to_rootfs() The function populate_initrd_image() references the function __init unpack_to_rootfs(). This is often because populate_initrd_image lacks a __init annotation or the annotation of unpack_to_rootfs is wrong. WARNING: vmlinux.o(.text.unlikely+0x198): Section mismatch in reference from the function populate_initrd_image() to the function .init.text:xwrite() The function populate_initrd_image() references the function __init xwrite(). This is often because populate_initrd_image lacks a __init annotation or the annotation of xwrite is wrong. Indeed, if the compiler decides not to inline populate_initrd_image(), a warning is generated. Fix this by adding the missing __init annotations. Link: http://lkml.kernel.org/r/20190617074340.12779-1-geert@xxxxxxxxxxxxxx Fixes: 7c184ecd262fe64f ("initramfs: factor out a helper to populate the initrd image") Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- init/initramfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/init/initramfs.c~initramfs-fix-populate_initrd_image-section-mismatch +++ a/init/initramfs.c @@ -617,7 +617,7 @@ static inline void clean_rootfs(void) #endif /* CONFIG_BLK_DEV_RAM */ #ifdef CONFIG_BLK_DEV_RAM -static void populate_initrd_image(char *err) +static void __init populate_initrd_image(char *err) { ssize_t written; int fd; @@ -637,7 +637,7 @@ static void populate_initrd_image(char * ksys_close(fd); } #else -static void populate_initrd_image(char *err) +static void __init populate_initrd_image(char *err) { printk(KERN_EMERG "Initramfs unpacking failed: %s\n", err); } _ Patches currently in -mm which might be from geert@xxxxxxxxxxxxxx are initramfs-fix-populate_initrd_image-section-mismatch.patch