This is a note to let you know that I've just added the patch titled
ARM: 9138/1: fix link warning with XIP + frame-pointer
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-9138-1-fix-link-warning-with-xip-frame-pointer.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 44cc6412e66b2b84544eaf2e14cf1764301e2a80 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Mon, 18 Oct 2021 15:30:08 +0100
Subject: ARM: 9138/1: fix link warning with XIP + frame-pointer
From: Arnd Bergmann <arnd@xxxxxxxx>
commit 44cc6412e66b2b84544eaf2e14cf1764301e2a80 upstream.
When frame pointers are used instead of the ARM unwinder,
and the kernel is built using clang with an external assembler
and CONFIG_XIP_KERNEL, every file produces two warnings
like:
arm-linux-gnueabi-ld: warning: orphan section `.ARM.extab' from `net/mac802154/util.o' being placed in section `.ARM.extab'
arm-linux-gnueabi-ld: warning: orphan section `.ARM.exidx' from `net/mac802154/util.o' being placed in section `.ARM.exidx'
The same fix was already merged for the normal (non-XIP)
linker script, with a longer description.
Fixes: c39866f268f8 ("arm/build: Always handle .ARM.exidx and .ARM.extab sections")
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/kernel/vmlinux-xip.lds.S | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/arm/kernel/vmlinux-xip.lds.S
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -40,6 +40,10 @@ SECTIONS
ARM_DISCARD
*(.alt.smp.init)
*(.pv_table)
+#ifndef CONFIG_ARM_UNWIND
+ *(.ARM.exidx) *(.ARM.exidx.*)
+ *(.ARM.extab) *(.ARM.extab.*)
+#endif
}
. = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
Patches currently in stable-queue which might be from arnd@xxxxxxxx are
queue-5.14/arm-9138-1-fix-link-warning-with-xip-frame-pointer.patch
queue-5.14/arm-9141-1-only-warn-about-xip-address-when-not-compile-testing.patch
queue-5.14/arm-9134-1-remove-duplicate-memcpy-definition.patch
queue-5.14/arm-9139-1-kprobes-fix-arch_init_kprobes-prototype.patch
