kernel: arch_syscall_number is, in fact, signed

Fixes #308
klange · Dec 31, 2024 · 28190ad · 28190ad
1 parent df14a1d
commit 28190ad
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/kernel/sys/syscall.c b/kernel/sys/syscall.c
@@ -1300,7 +1300,7 @@ void syscall_handler(struct regs * r) {
 
 	long result;
 
-	if (arch_syscall_number(r) >= num_syscalls) {
+	if (arch_syscall_number(r) < 0 || arch_syscall_number(r) >= num_syscalls) {
 		result = -EINVAL;
 		goto _finish_syscall;
 	}