The patch titled
unwinder warning fixes
has been added to the -mm tree. Its filename is
unwinder-warning-fixes.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: unwinder warning fixes
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
arch/x86_64/kernel/traps.c: In function 'show_trace':
arch/x86_64/kernel/traps.c:287: warning: cast to pointer from integer of different size
>
>That's
>
> stack = (unsigned long *)UNW_SP(&info);
>
>which expands to
>
> stack = (unsigned long *)((void)(&info), 0);
>
>because CONFIG_UNWIND_INFO=n.
>
Simple to fix I guess, although I think the compiler could do better
here (after all, they must already be special casing (void *)0 in order
for the conventional definition of NULL to not trigger the warning.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/asm-i386/unwind.h | 4 ++--
include/asm-x86_64/unwind.h | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff -puN include/asm-i386/unwind.h~unwinder-warning-fixes include/asm-i386/unwind.h
--- a/include/asm-i386/unwind.h~unwinder-warning-fixes
+++ a/include/asm-i386/unwind.h
@@ -86,8 +86,8 @@ static inline int arch_unw_user_mode(con
#else
-#define UNW_PC(frame) ((void)(frame), 0)
-#define UNW_SP(frame) ((void)(frame), 0)
+#define UNW_PC(frame) ((void)(frame), 0UL)
+#define UNW_SP(frame) ((void)(frame), 0UL)
static inline int arch_unw_user_mode(const void *info)
{
diff -puN include/asm-x86_64/unwind.h~unwinder-warning-fixes include/asm-x86_64/unwind.h
--- a/include/asm-x86_64/unwind.h~unwinder-warning-fixes
+++ a/include/asm-x86_64/unwind.h
@@ -94,8 +94,8 @@ static inline int arch_unw_user_mode(con
#else
-#define UNW_PC(frame) ((void)(frame), 0)
-#define UNW_SP(frame) ((void)(frame), 0)
+#define UNW_PC(frame) ((void)(frame), 0UL)
+#define UNW_SP(frame) ((void)(frame), 0UL)
static inline int arch_unw_user_mode(const void *info)
{
_
Patches currently in -mm which might be from jbeulich@xxxxxxxxxx are
origin.patch
revert-x86_64-mm-i386-remove-lock-section.patch
revert-x86_64-mm-detect-cfi.patch
unwinder-warning-fixes.patch
fix-intel-rng-detection.patch
unwind-fix-unused-variable-warning-when.patch
-
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