--- arch/sparc/kernel/process_32.c
+++ arch/sparc/kernel/process_32.c
@@ -526,7 +526,7 @@ int copy_thread(unsigned long clone_flag
* Set some valid stack frames to give to the child.
*/
childstack = (struct sparc_stackf __user *)
- (sp & ~0x7UL);
+ (sp & ~0xfUL);
parentstack = (struct sparc_stackf __user *)
regs->u_regs[UREG_FP];