From: Ian Rogers <irogers@google.com>
To: Leo Yan <leo.yan@linaro.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>,
German Gomez <german.gomez@arm.com>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Stephane Eranian <eranian@google.com>, Ian Rogers <irogers@google.com>
Subject: [PATCH v2 5/8] perf session: Change type to avoid UB
Date: Mon, 24 Oct 2022 11:19:10 -0700 [thread overview]
Message-ID: <20221024181913.630986-6-irogers@google.com> (raw)
In-Reply-To: <20221024181913.630986-1-irogers@google.com>
session_done is written to inside the signal handler of perf report
and script. Switch its type to avoid undefined behavior.
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/session.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 1a4f10de29ff..0e1a3d6bacb9 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <errno.h>
+#include <signal.h>
#include <inttypes.h>
#include <linux/err.h>
#include <linux/kernel.h>
@@ -2022,7 +2023,7 @@ static int perf_session__flush_thread_stacks(struct perf_session *session)
NULL);
}
-volatile int session_done;
+volatile sig_atomic_t session_done;
static int __perf_session__process_decomp_events(struct perf_session *session);
--
2.38.0.135.g90850a2211-goog
next prev parent reply other threads:[~2022-10-24 20:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-24 18:19 [PATCH v2 0/8] Update to C11, fix signal undefined behavior Ian Rogers
2022-10-24 18:19 ` [PATCH v2 1/8] perf build: Update to C standard to gnu11 Ian Rogers
2022-10-24 18:19 ` [PATCH v2 2/8] perf record: Use sig_atomic_t for signal handlers Ian Rogers
2022-10-24 18:19 ` [PATCH v2 3/8] perf daemon: Use sig_atomic_t to avoid UB Ian Rogers
2022-10-24 18:19 ` [PATCH v2 4/8] perf ftrace: " Ian Rogers
2022-10-24 18:19 ` Ian Rogers [this message]
2022-10-24 18:19 ` [PATCH v2 6/8] perf stat: " Ian Rogers
2022-10-24 18:19 ` [PATCH v2 7/8] perf top: " Ian Rogers
2022-10-24 18:19 ` [PATCH v2 8/8] perf trace: " Ian Rogers
2022-11-03 13:04 ` [PATCH v2 0/8] Update to C11, fix signal undefined behavior Arnaldo Carvalho de Melo
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