uio: Let freeuio(NULL) work

In FreeBSD this works, and some cleanup paths depend on it.
bsdjhb · Mar 13, 2024 · 35f9985 · 35f9985
1 parent b6eeda6
commit 35f9985
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/sys/kern/subr_uio.c b/sys/kern/subr_uio.c
@@ -492,6 +492,8 @@ allocuio(u_int iovcnt)
 void
 freeuio(struct uio *uio)
 {
+	if (uio == NULL)
+		return;
 	if (uio->uio_flags & UIO_EXT_IOVEC) {
 #ifdef __CHERI_PURE_CAPABILITY__
 		KASSERT(cheri_is_address_inbounds(uio->uio_ext_iov,