The patch titled
Subject: kernel/sys.c: compat sysinfo syscall: fix undefined behavior
has been added to the -mm tree. Its filename is
kern-sys-compat-sysinfo-syscall-fix-undefined-behavior.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kern-sys-compat-sysinfo-syscall-fix-undefined-behavior.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kern-sys-compat-sysinfo-syscall-fix-undefined-behavior.patch
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------------------------------------------------------
From: Scotty Bauer <sbauer@xxxxxxxxxxxx>
Subject: kernel/sys.c: compat sysinfo syscall: fix undefined behavior
Fix undefined behavior and compiler warning by replacing right shift 32
with upper_32_bits macro
Signed-off-by: Scotty Bauer <sbauer@xxxxxxxxxxxx>
Cc: Clemens Ladisch <clemens@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sys.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/sys.c~kern-sys-compat-sysinfo-syscall-fix-undefined-behavior kernel/sys.c
--- a/kernel/sys.c~kern-sys-compat-sysinfo-syscall-fix-undefined-behavior
+++ a/kernel/sys.c
@@ -2330,7 +2330,7 @@ COMPAT_SYSCALL_DEFINE1(sysinfo, struct c
/* Check to see if any memory value is too large for 32-bit and scale
* down if needed
*/
- if ((s.totalram >> 32) || (s.totalswap >> 32)) {
+ if (upper_32_bits(s.totalram) || upper_32_bits(s.totalswap)) {
int bitcount = 0;
while (s.mem_unit < PAGE_SIZE) {
_
Patches currently in -mm which might be from sbauer@xxxxxxxxxxxx are
kern-sys-compat-sysinfo-syscall-fix-undefined-behavior.patch
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