sched_setaffinity(): error handling for invalid input

2016-08-19 11:52:44 +09:00
parent b9439947a7
commit a7ee3f531b
2 changed files with 8 additions and 1 deletions
--- a/arch/x86/kernel/memory.c
+++ b/arch/x86/kernel/memory.c
@@ -2278,6 +2278,9 @@ int read_process_vm(struct process_vm *vm, void *kdst, const void *usrc, size_t

 	reason = PF_USER;	/* page not present */
 	for (addr = ustart & PAGE_MASK; addr < uend; addr += PAGE_SIZE) {
+		if (!addr)
+			return -EINVAL;
+
 		error = page_fault_process_vm(vm, (void *)addr, reason);
 		if (error) {
 			kprintf("%s: error: PF for %p failed\n", __FUNCTION__, addr);