perf annotate: Allocate history size correctly

Symbol offset history table size does not get updated properly
when it is being resized. This leads to garbage results in
perf annotate.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 8 insertions, 0 deletions

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 226f44a2357d..cbac57549298 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -227,6 +227,10 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int v)
                               *curr = rb_entry(nd, struct symbol, rb_node);
 
                 prev->end = curr->start - 1;
+                if (prev->hist) {
+                        free(prev->hist);
+                        prev->hist = calloc(sizeof(u64), prev->end - prev->start);
+                }
                 prevnd = nd;
         }
 
@@ -883,6 +887,10 @@ static inline void dso__fill_symbol_holes(struct dso *self)
                                         pos->end = prev->end;
                                 else if (hole)
                                         pos->end = prev->start - 1;
+                                if (pos->hist) {
+                                        free(pos->hist);
+                                        pos->hist = calloc(sizeof(u64), pos->end - pos->start);
+                                }
                         }
                 }
                 prev = pos;