sunrpc: Fix UB on xdr_hyper

ubsan triggers:

UBSAN: Undefined behaviour in xdr.c:262:28 left shift of 18446744073709551615 by 32 cannot be represented in type 'long int'

Fix by using unsigned type cast for left shift.

diff --git a/sunrpc/xdr.c b/sunrpc/xdr.c
index a76094d6dab550e116eed407f679c17bf9992e74..b7b139520e682f9c9445fbe132210d9be8fd86e8 100644 (file)
--- a/sunrpc/xdr.c
+++ b/sunrpc/xdr.c
@@ -259,7 +259,7 @@ xdr_hyper (XDR *xdrs, quad_t *llp)
     {
       if (!XDR_GETLONG(xdrs, &t1) || !XDR_GETLONG(xdrs, &t2))
        return FALSE;
-      *llp = ((quad_t) t1) << 32;
+      *llp = ((u_quad_t) t1) << 32;
       *llp |= (uint32_t) t2;
       return TRUE;
     }