[PATCH 4/9] perf symbols: Handle NULL dso in dso__name_len

From: Arnaldo Carvalho de Melo
Date: Fri Mar 30 2012 - 12:11:13 EST

From: David Miller <davem@xxxxxxxxxxxxx>

We should use "[unknown]" in this case, in concert with the code in

Otherwise we'll crash when recomputing the histogram column lengths in

Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20120325.162822.2267799792062571623.davem@xxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/util/symbol.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index d9e995b..c0a028c 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -50,6 +50,8 @@ struct symbol_conf symbol_conf = {

int dso__name_len(const struct dso *dso)
+ if (!dso)
+ return strlen("[unknown]");
if (verbose)
return dso->long_name_len;


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