lkml.org 
[lkml]   [2014]   [Mar]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] perf bench: Fix NULL pointer dereference in "perf bench all"
Date
for_each_bench() must check that the "benchmarks" field of a collection
is not NULL before dereferencing it because the "all" collection in
particular has a NULL "benchmarks" field (signifying that it has no
benchmarks to iterate over).

This fixes a NULL pointer dereference when running "perf bench all".

Signed-off-by: Patrick Palka <patrick@parcs.ath.cx>
---
tools/perf/builtin-bench.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index e47f90c..8a987d2 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -76,7 +76,7 @@ static struct collection collections[] = {

/* Iterate over all benchmarks within a collection: */
#define for_each_bench(coll, bench) \
- for (bench = coll->benchmarks; bench->name; bench++)
+ for (bench = coll->benchmarks; bench && bench->name; bench++)

static void dump_benchmarks(struct collection *coll)
{
--
1.9.0


\
 
 \ /
  Last update: 2014-03-13 01:01    [W:0.047 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site