From: Benoît Ganne <bganne@cisco.com>
Date: Tue, 17 Nov 2020 16:58:59 +0000 (+0100)
Subject: svm: fix high segment base address for ASan
X-Git-Tag: v21.06-rc0~152
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=e3e9d8af46a407afc6e7e83cf705f604c771923f;p=vpp.git

svm: fix high segment base address for ASan

AddressSanitizer has specific requirements on memory map. In particular,
the range [0x00007fff8000, 0x10007fff7fff] is reserved for ASan use.

Type: fix
Fixes: f260eb97866978746ebd3f3441dc66e4ff7111cd

Change-Id: Ie96c4dd88b4f02d7fc5c24464572ff72cb6fd96b
Signed-off-by: Benoît Ganne <bganne@cisco.com>
---

diff --git a/src/svm/svm_common.h b/src/svm/svm_common.h
index ec5e70b83a6..3a3db5d2f3c 100644
--- a/src/svm/svm_common.h
+++ b/src/svm/svm_common.h
@@ -82,7 +82,7 @@ typedef struct svm_map_region_args_
  */
 #if __WORDSIZE == 64
 #ifdef CLIB_SANITIZE_ADDR
-#define HIGH_SEGMENT_BASEVA 0x2000000000
+#define HIGH_SEGMENT_BASEVA 0x300000000000	/* DO NOT CHANGE THIS: YOU'LL BREAK ASAN */
 #else /* CLIB_SANITIZE_ADDR */
 #define HIGH_SEGMENT_BASEVA (128ULL << 30)	/* 128GB */
 #endif /* CLIB_SANITIZE_ADDR */