From: Andreas Schultz <andreas.schultz@travelping.com>
Date: Fri, 19 Jul 2019 09:14:50 +0000 (+0200)
Subject: vppinfra: fix OOM check in bihash
X-Git-Tag: v20.01-rc0~151
X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=commitdiff_plain;h=b4b525e0fa14d46eac4c2f44048c0488c83f0192

vppinfra: fix OOM check in bihash

The OOM check must consider the end of alloced arena and
not the start when checking for overflow.

Type: fix
Change-Id: Ie83e653d0894199d2fa433a604a0fe0cee142338
Signed-off-by: Andreas Schultz <andreas.schultz@travelping.com>
---

diff --git a/src/vppinfra/bihash_template.c b/src/vppinfra/bihash_template.c
index cd75a7a9be9..11e3ac448f8 100644
--- a/src/vppinfra/bihash_template.c
+++ b/src/vppinfra/bihash_template.c
@@ -26,7 +26,7 @@ static inline void *BV (alloc_aligned) (BVT (clib_bihash) * h, uword nbytes)
   rv = alloc_arena_next (h);
   alloc_arena_next (h) += nbytes;
 
-  if (rv >= alloc_arena_size (h))
+  if (alloc_arena_next (h) > alloc_arena_size (h))
     os_out_of_memory ();
 
   return (void *) (uword) (rv + alloc_arena (h));