From 275b80e086382581b2ecc6c9abc0724a56b2edfe Mon Sep 17 00:00:00 2001
From: Leo Yuriev <leo@yuriev.ru>
Date: Wed, 1 Aug 2018 20:44:52 +0300
Subject: [PATCH] mdbx: fix mdbx_page_get().

Fix commit 32c63077a457d3a639b47329635a374b91a5f91d
Change-Id: I7649c3c65c19013e1b367e7554fbe823ea0511d2
---
 src/mdbx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mdbx.c b/src/mdbx.c
index 169b9203..149ec07b 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -6357,7 +6357,8 @@ mapped:
   p = pgno2page(env, pgno);
 
 done:
-  if (unlikely(p->mp_upper < p->mp_lower ||
+  if ((p->mp_flags & P_OVERFLOW) == 0 &&
+      unlikely(p->mp_upper < p->mp_lower ||
                PAGEHDRSZ + p->mp_upper > env->me_psize))
     return MDBX_CORRUPTED;
   /* TODO: more checks here, including p->mp_validator */