From 1900b7c0804143832e1a81568287e3f4d230548f Mon Sep 17 00:00:00 2001
From: Jack May <jack@solana.com>
Date: Sun, 16 Aug 2020 23:11:52 -0700
Subject: [PATCH] fix region checks (#11651)

(cherry picked from commit 768b386f0a1bcc01be05df3b4c5a8fdeee729d85)
---
 programs/bpf_loader/src/syscalls.rs | 4 ++--
 sdk/src/pubkey.rs                   | 7 ++-----
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/programs/bpf_loader/src/syscalls.rs b/programs/bpf_loader/src/syscalls.rs
index 954b7128921b3f..2ae4d942db98c8 100644
--- a/programs/bpf_loader/src/syscalls.rs
+++ b/programs/bpf_loader/src/syscalls.rs
@@ -355,10 +355,10 @@ pub fn syscall_create_program_address(
             )
         })
         .collect::<Result<Vec<_>, EbpfError<BPFError>>>()?;
-    let program_id = translate_type!(Pubkey, program_id_addr, rw_regions)?;
+    let program_id = translate_type!(Pubkey, program_id_addr, ro_regions)?;
     let new_address =
         Pubkey::create_program_address(&seeds, program_id).map_err(SyscallError::BadSeeds)?;
-    let address = translate_slice_mut!(u8, address_addr, 32, ro_regions)?;
+    let address = translate_slice_mut!(u8, address_addr, 32, rw_regions)?;
     address.copy_from_slice(new_address.as_ref());
     Ok(0)
 }
diff --git a/sdk/src/pubkey.rs b/sdk/src/pubkey.rs
index c6a69c4f8e880e..3807ea502c3501 100644
--- a/sdk/src/pubkey.rs
+++ b/sdk/src/pubkey.rs
@@ -139,16 +139,13 @@ impl Pubkey {
                     address_bytes_addr: *const u8,
                 ) -> u64;
             };
-            let bytes = [
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-                0, 0, 0, 0,
-            ];
+            let mut bytes = [0; 32];
             let result = unsafe {
                 sol_create_program_address(
                     seeds as *const _ as *const u8,
                     seeds.len() as u64,
                     program_id as *const _ as *const u8,
-                    &bytes as *const _ as *const u8,
+                    &mut bytes as *mut _ as *mut u8,
                 )
             };
             match result {