[Bug sanitizer/79341] Many Asan tests fail on s390

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79341

--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Following patch adds the RHEL{6,7} errata kernels to the whitelist.
SUSE and/or Debian would need to add theirs if they want.

--- libsanitizer/sanitizer_common/sanitizer_linux_s390.cc       2016-11-09
15:22:41.917353799 +0100
+++ libsanitizer/sanitizer_common/sanitizer_linux_s390.cc       2017-02-08
15:36:44.335857387 +0100
@@ -134,6 +134,18 @@ static bool FixedCVE_2016_2143() {
   if (ptr[0] == '.')
     patch = internal_simple_strtoll(ptr+1, &ptr, 10);
   if (major < 3) {
+    if (major == 2 && minor == 6 && patch == 32 && ptr[0] == '-'
+       && internal_strstr(ptr, ".el6")) {
+      // Check RHEL6
+      int r1 = internal_simple_strtoll(ptr+1, &ptr, 10);
+      if (r1 >= 657) // 2.6.32-657.el6 or later
+       return true;
+      if (r1 == 642 && ptr[0] == '.') {
+       int r2 = internal_simple_strtoll(ptr+1, &ptr, 10);
+       if (r2 >= 9) // 2.6.32-642.9.1.el6 or later
+         return true;
+      }
+    }
     // <3.0 is bad.
     return false;
   } else if (major == 3) {
@@ -143,6 +155,18 @@ static bool FixedCVE_2016_2143() {
     // 3.12.58+ is OK.
     if (minor == 12 && patch >= 58)
       return true;
+    if (minor == 10 && patch == 0 && ptr[0] == '-'
+       && internal_strstr(ptr, ".el7")) {
+      // Check RHEL7
+      int r1 = internal_simple_strtoll(ptr+1, &ptr, 10);
+      if (r1 >= 426) // 3.10.0-426.el7 or later
+       return true;
+      if (r1 == 327 && ptr[0] == '.') {
+       int r2 = internal_simple_strtoll(ptr+1, &ptr, 10);
+       if (r2 >= 27) // 3.10.0-327.27.1.el7 or later
+         return true;
+      }
+    }
     // Otherwise, bad.
     return false;
   } else if (major == 4) {