[PATCH] kern/sys: Compat sysinfo syscall fix undefined behavior

[Scotty Bauer]

Fix undefined behavior and compiler warning by replacing right
shift 32 with upper_32_bits macro

Signed-off-by: Scotty Bauer <sbauer@xxxxxxxxxxxx>
---
 kernel/sys.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index ce81291..c78530b 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2135,7 +2135,7 @@ COMPAT_SYSCALL_DEFINE1(sysinfo, struct compat_sysinfo __user *, info)
 	/* 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) {
-- 
1.8.3.2