linux-kernel - Re: [PATCH v4] perf data convert: Fix segfault when converting to json when cpu

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Message-ID: <170905469226.501091.4202015641394575376.b4-ty@kernel.org>
Date: Tue, 27 Feb 2024 09:25:20 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Ilkka Koskinen <ilkka@...amperecomputing.com>,
	Ian Rogers <irogers@...gle.com>,
	James Clark <james.clark@....com>
Cc: Evgeny Pistun <kotborealis@...oo.ru>,
	linux-kernel@...r.kernel.org,
	Mark Rutland <mark.rutland@....com>,
	linux-perf-users@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v4] perf data convert: Fix segfault when converting to json when cpu_desc isn't set

On Fri, 23 Feb 2024 14:04:58 -0800, Ilkka Koskinen wrote:
> Arm64 doesn't have Model in /proc/cpuinfo and, thus, cpu_desc doesn't get
> assigned.
> 
> Running
> 	$ perf data convert --to-json perf.data.json
> 
> ends up calling output_json_string() with NULL pointer, which causes a
> segmentation fault.
> 
> [...]

Applied to perf-tools-next, thanks!

Best regards,
-- 
Namhyung Kim <namhyung@...nel.org>