From: David Miller <davem@davemloft.net>
Date: Sun, 25 Mar 2012 20:28:22 +0000 (-0400)
Subject: perf symbols: Handle NULL dso in dso__name_len
X-Git-Tag: v3.4-rc1~4^2^2~5
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=1e2dd2f73afdc810cc7400b7036232fbdc416eeb;p=~emulex%2Finfiniband.git

perf symbols: Handle NULL dso in dso__name_len

We should use "[unknown]" in this case, in concert with the code in
_hist_entry__dso_snprintf().

Otherwise we'll crash when recomputing the histogram column lengths in
hists__calc_col_len().

Signed-off-by: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/20120325.162822.2267799792062571623.davem@davemloft.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index d9e995bf8b6..c0a028c3eba 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;