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)