From 344353366591acf659a0d0dea498611da78d67e2 Mon Sep 17 00:00:00 2001 From: Kim Phillips Date: Fri, 10 Aug 2018 17:45:12 -0500 Subject: [PATCH] perf arm spe: Fix uninitialized record error variable The auxtrace init variable 'err' was not being initialized, leading perf to abort early in an SPE record command when there was no explicit error, rather only based whatever memory contents were on the stack. Initialize it explicitly on getting an SPE successfully, the same way cs-etm does. Signed-off-by: Kim Phillips Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Dongjiu Geng Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Fixes: ffd3d18c20b8 ("perf tools: Add ARM Statistical Profiling Extensions (SPE) support") Link: http://lkml.kernel.org/r/20180810174512.52900813e57cbccf18ce99a2@arm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/arm64/util/arm-spe.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index 1120e39c1b00..5ccfce87e693 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -194,6 +194,7 @@ struct auxtrace_record *arm_spe_recording_init(int *err, sper->itr.read_finish = arm_spe_read_finish; sper->itr.alignment = 0; + *err = 0; return &sper->itr; } -- 2.45.2