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    Subject[PATCH 6.0 674/862] ARM: decompressor: Include .data.rel.ro.local
    Date
    From: Kees Cook <keescook@chromium.org>

    [ Upstream commit 1b64daf413acd86c2c13f5443f6b4ef3690c8061 ]

    The .data.rel.ro.local section has the same semantics as .data.rel.ro
    here, so include it in the .rodata section of the decompressor.
    Additionally since the .printk_index section isn't usable outside of
    the core kernel, discard it in the decompressor. Avoids these warnings:

    arm-linux-gnueabi-ld: warning: orphan section `.data.rel.ro.local' from `arch/arm/boot/compressed/fdt_rw.o' being placed in section `.data.rel.ro.local'
    arm-linux-gnueabi-ld: warning: orphan section `.printk_index' from `arch/arm/boot/compressed/fdt_rw.o' being placed in section `.printk_index'

    Reported-by: kernel test robot <lkp@intel.com>
    Link: https://lore.kernel.org/linux-mm/202209080545.qMIVj7YM-lkp@intel.com
    Cc: Russell King <linux@armlinux.org.uk>
    Cc: linux-arm-kernel@lists.infradead.org
    Signed-off-by: Kees Cook <keescook@chromium.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm/boot/compressed/vmlinux.lds.S | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/arch/arm/boot/compressed/vmlinux.lds.S b/arch/arm/boot/compressed/vmlinux.lds.S
    index 1bcb68ac4b01..3fcb3e62dc56 100644
    --- a/arch/arm/boot/compressed/vmlinux.lds.S
    +++ b/arch/arm/boot/compressed/vmlinux.lds.S
    @@ -23,6 +23,7 @@ SECTIONS
    *(.ARM.extab*)
    *(.note.*)
    *(.rel.*)
    + *(.printk_index)
    /*
    * Discard any r/w data - this produces a link error if we have any,
    * which is required for PIC decompression. Local data generates
    @@ -57,6 +58,7 @@ SECTIONS
    *(.rodata)
    *(.rodata.*)
    *(.data.rel.ro)
    + *(.data.rel.ro.*)
    }
    .piggydata : {
    *(.piggydata)
    --
    2.35.1


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