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perf top: Fix annotate segv

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Before we had sym_counter, it was initialized to zero and we used that
as an index in the global attrs variable, now we have a list of evsel
entries, and sym_counter became sym_evsel, that remained initialized to
zero (NULL): b00m.

Fix it by initializing it to the first entry in the evsel list.

Bug-introduced: 69aad6f
Reported-by: Kirill Smelkov <[email protected]>
Tested-by: Kirill Smelkov <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Kirill Smelkov <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Tom Zanussi <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-01-11 15:16:52 -02:00
commit cc841580aa
1 changed files with 2 additions and 0 deletions
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2
tools/perf/builtin-top.c
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@ -1473,6 +1473,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
pos->attr.sample_period = default_interval;
}
sym_evsel = list_entry(evsel_list.next, struct perf_evsel, node);
symbol_conf.priv_size = (sizeof(struct sym_entry) +
(nr_counters + 1) * sizeof(unsigned long));