File guard-usage-of-vmlinux.h.patch of Package systemtap

From: Tony Jones <tonyj@suse.de>
Subject: guard usage of vmlinux.h
References: jsc#PED-15105
Upstream: pending
Signed-off-by: Tony Jones <tonyj@suse.de>

Temporary workaround until jsc#PED-15105 is resolved.
Check that .../build/vmlinux.h actually exists before using it.

diff --git a/buildrun.cxx b/buildrun.cxx
index c3e38a2db..4c9251653 100644
--- a/buildrun.cxx
+++ b/buildrun.cxx
@@ -1209,8 +1209,12 @@ make_typequery_kmod(systemtap_session& s, const vector<string>& headers, string&
       const string& h = headers[i];
       if (h == string("vmlinux.h")) // PR33428: vmlinux.h special case
         {
-          omf << " -include " << lex_cast_qstring(s.kernel_build_tree) << "/" << lex_cast_qstring("vmlinux.h");
-          no_vmlinux_h = false;
+          string vh = s.kernel_build_tree + "/vmlinux.h";
+          if (access(vh.c_str(), R_OK) == 0)
+            {
+              omf << " -include " << lex_cast_qstring(s.kernel_build_tree) << "/" << lex_cast_qstring("vmlinux.h");
+              no_vmlinux_h = false;
+            }
         }
       else
         omf << " -include " << lex_cast_qstring(h); // XXX right quoting?