Update to 3.4-rc5.

[linux-flexiantxendom0-3.2.10.git] / tools / perf / builtin-report.c

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2e31743..cdae9b2 100644 (file)
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -374,16 +374,23 @@ static int __cmd_report(struct perf_report *rep)
            (kernel_map->dso->hit &&
             (kernel_kmap->ref_reloc_sym == NULL ||
              kernel_kmap->ref_reloc_sym->addr == 0))) {
-               const struct dso *kdso = kernel_map->dso;
+               const char *desc =
+                   "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
+                   "can't be resolved.";
+
+               if (kernel_map) {
+                       const struct dso *kdso = kernel_map->dso;
+                       if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
+                               desc = "If some relocation was applied (e.g. "
+                                      "kexec) symbols may be misresolved.";
+                       }
+               }
 
                ui__warning(
 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 "Samples in kernel modules can't be resolved as well.\n\n",
-                           RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION]) ?
-"As no suitable kallsyms nor vmlinux was found, kernel samples\n"
-"can't be resolved." :
-"If some relocation was applied (e.g. kexec) symbols may be misresolved.");
+               desc);
        }
 
        if (dump_trace) {