+ mm-kmemleak-use-address-of-operator-on-section-symbols.patch added to -mm tree

+ mm-kmemleak-use-address-of-operator-on-section-symbols.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/kmemleak.c: use address-of operator on section symbols
has been added to the -mm tree.  Its filename is
     mm-kmemleak-use-address-of-operator-on-section-symbols.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-kmemleak-use-address-of-operator-on-section-symbols.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-kmemleak-use-address-of-operator-on-section-symbols.patch

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------------------------------------------------------
From: Nathan Chancellor <natechancellor@gmail.com>
Subject: mm/kmemleak.c: use address-of operator on section symbols

Clang warns:

These are not true arrays, they are linker defined symbols, which are just
addresses.  Using the address of operator silences the warning and does
not change the resulting assembly with either clang/ld.lld or gcc/ld
(tested with diff + objdump -Dr).

Link: https://github.com/ClangBuiltLinux/linux/issues/895
Link: http://lkml.kernel.org/r/20200220051551.44000-1-natechancellor@gmail.com
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/kmemleak.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/kmemleak.c~mm-kmemleak-use-address-of-operator-on-section-symbols
+++ a/mm/kmemleak.c
@@ -1947,7 +1947,7 @@ void __init kmemleak_init(void)
 	create_object((unsigned long)__bss_start, __bss_stop - __bss_start,
 		      KMEMLEAK_GREY, GFP_ATOMIC);
 	/* only register .data..ro_after_init if not within .data */
-	if (__start_ro_after_init < _sdata || __end_ro_after_init > _edata)
+	if (&__start_ro_after_init < &_sdata || &__end_ro_after_init > &_edata)
 		create_object((unsigned long)__start_ro_after_init,
 			      __end_ro_after_init - __start_ro_after_init,
 			      KMEMLEAK_GREY, GFP_ATOMIC);
_

Patches currently in -mm which might be from natechancellor@gmail.com are

mm-kmemleak-use-address-of-operator-on-section-symbols.patch
kernel-extable-use-address-of-operator-on-section-symbols.patch