linux-kernel - Re: [PATCH v1 0/8] Various fixes around undefined behavior

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Message-ID: <Z1zW0abggo8KcYBw@google.com>
Date: Fri, 13 Dec 2024 16:52:33 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	"Mike Rapoport (IBM)" <rppt@...nel.org>,
	Wei Yang <richard.weiyang@...il.com>,
	James Clark <james.clark@...aro.org>,
	Howard Chu <howardchu95@...il.com>,
	Kajol Jain <kjain@...ux.ibm.com>,
	Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
	Ze Gao <zegao2021@...il.com>, Weilin Wang <weilin.wang@...el.com>,
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v1 0/8] Various fixes around undefined behavior

On Fri, Dec 13, 2024 at 01:04:17PM -0800, Ian Rogers wrote:
> Fix various undefined behavior issues, improve tests to make them
> easier to diagnose and add assertions so that problems don't recur.
> 
> Ian Rogers (8):
>   perf disasm: Avoid undefined behavior in incrementing NULL
>   perf test trace_btf_enum: Skip if permissions are insufficient
>   tools headers: Update offsetof and container_of
>   perf evsel: Avoid container_of on a NULL leader
>   tools headers: Add non-NULL assert to container_of
>   perf maps: Avoid UB passing NULL to bsearch
>   perf test shell lock_contention: Extra debug diagnostics
>   libperf event: Ensure tracing data is multiple of 8 sized

Acked-by: Namhyung Kim <namhyung@...nel.org>

Thanks,
Namhyung

> 
>  tools/include/linux/kernel.h              | 16 ++++++++++------
>  tools/lib/perf/include/perf/event.h       |  1 +
>  tools/perf/tests/shell/lock_contention.sh |  9 +++++++--
>  tools/perf/tests/shell/trace_btf_enum.sh  | 11 +++++++++++
>  tools/perf/util/disasm.c                  |  7 +++++--
>  tools/perf/util/evsel.c                   |  2 ++
>  tools/perf/util/maps.c                    |  9 ++++++---
>  7 files changed, 42 insertions(+), 13 deletions(-)
> 
> -- 
> 2.47.1.613.gc27f4b7a9f-goog
>