From nobody Sun Feb 8 10:49:37 2026 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1876015853A for ; Tue, 19 Nov 2024 23:00:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732057238; cv=none; b=NlsIjVRy8loiT3AVbyM7PVHYHO+6Hyvmlz3til6K4o7eKL41wFZFLlIJLmmSNg8uqTairBcsA+X6nqGS13HxWYungtsN2oCsHQkTK6KPf3OXs23FDJ7Q6cFFjNobf3Zx31qMqwQEkCcIxZuUG+ssAVwJ8draFHoq+MjA0HgVgGA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732057238; c=relaxed/simple; bh=SnQpaiNZeh5n+vgyLHEhD2s+3Dj5vTuGYjm83k/t/bg=; h=Date:Message-Id:Mime-Version:Subject:From:To:Content-Type; b=uUQVcfbiI6HmO3C3gwdbItyjkt8Yi2eaI8MFi4WEN6IcOHmF8AMGZgEe9OAfkKabkGBSOv7nilxVtBzDVfmHNjdNxhwLgCuAyoHAQ9wBE9ixcXaN/QfXn2YHytxrKtoOwaY2APz/PSHJWal8MQsqO9c3UdEHhsiW0f4HM+qAZjU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Pe9wnOF3; arc=none smtp.client-ip=209.85.219.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Pe9wnOF3" Received: by mail-yb1-f202.google.com with SMTP id 3f1490d57ef6-e389ef22432so4559672276.0 for ; Tue, 19 Nov 2024 15:00:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1732057236; x=1732662036; darn=vger.kernel.org; h=to:from:subject:mime-version:message-id:date:from:to:cc:subject :date:message-id:reply-to; bh=LnbME42R2LfFNaMpUrmesNpgT8Nb/L9TgLUhFREqeck=; b=Pe9wnOF3JJTgCP1ZcfmJAbZKNJiq1b2GHU8eGP6nbZXb2oZICJGNOIoKXDoTQNnsGv Y9OJ08XZzJDVzOqh191HL7FVqAFW74xMLyKHsX5zNzBkCqMaveqNQW5zdJNUCz9Zc16/ MQ2ydqUn8ZrS3xXLYjeW1vc4V9yWCUvN37bIZqnivJFNzeyPiRMz+B/WMmgDiDXOmzlD 6OF9SDxQhFK73RmiHky5oXzqGPuYKz/6QOqS3fKUK0+DXPS9ijs9AMzCVs8EiVYJxy/X xLz/hWWOtLAoJNLKI2MXVctee+ENBJfDGU3LbKfVBll85DulOhSNcxt7ziRoHpUJ8+nT Cljw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732057236; x=1732662036; h=to:from:subject:mime-version:message-id:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=LnbME42R2LfFNaMpUrmesNpgT8Nb/L9TgLUhFREqeck=; b=ZKUzOvr6/nLM00RL/+vuvH/xHmOa6FlOXz8ARVsRqaEElBfSc2o1Z/Tiq3fZqLqQr2 tXt33gmdsFo4FrfA2FyQLf9gQLt0rk2KSsEvbzMdnekQfFn5dvIiJC3pJgXeYieXS1Ya UdmnppvGUwCzYHrRiladZgwD9vM7vF6h/HbKjMzSDbFVlqIGNfwjH9pSGv6DUU3Hhck6 RLaOOkws8tAHSmIc2OR8MzdW/uYwrM4eeZjXBI4zIMMnHkKFx5LZ4WKGnjw73GEorZjk bTGi3QdiUkE7XYiszlUmONIyFf5Ko09uPf8tu7CMGxsYMOvfZT5Glr3+1Iu4/f5+By5c OxNQ== X-Forwarded-Encrypted: i=1; AJvYcCUkE6YCLqg1v5SX+rLTAjq9JWGwmFDVVJs7mGRoLifss1eZpf5LAKlX70ejVyGHmbetjL0pd8SambHssO8=@vger.kernel.org X-Gm-Message-State: AOJu0YxS87xcEC77sJN/i2Ya4Aa05qm6+qo1dZ9iSsnKc2FUGjGizAax 1JwLJhyOvNdxKCoFQG0p3EQkQvN9P7SoB4bmhjYsJDSOGOP4vAFA8rV0D6ta5G/yAwPeTioCdZW FTkQrFA== X-Google-Smtp-Source: AGHT+IH9Co679ZSlkYRRyEiksAwN016d3EZ59f4JN3HnyaZ+TNBb4fPcTYXG+hxapEGy1a5D49gMcxDCur8O X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:89d:ee73:740b:dfb3]) (user=irogers job=sendgmr) by 2002:a25:9005:0:b0:e28:e510:6ab1 with SMTP id 3f1490d57ef6-e38cb726100mr190276.8.1732057236028; Tue, 19 Nov 2024 15:00:36 -0800 (PST) Date: Tue, 19 Nov 2024 15:00:33 -0800 Message-Id: <20241119230033.115369-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.47.0.371.ga323438b13-goog Subject: [PATCH v1] perf hwmon_pmu: Ensure hwmon key union is zeroed before use From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Non-zero values led to mismatches in testing. This was reproducible with -fsanitize=3Dundefined. Reported-by: Arnaldo Carvalho de Melo Closes: https://lore.kernel.org/lkml/Zzdtj0PEWEX3ATwL@x1/ Signed-off-by: Ian Rogers Acked-by: Namhyung Kim --- tools/perf/util/hwmon_pmu.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/hwmon_pmu.c b/tools/perf/util/hwmon_pmu.c index ac2245acdc6d..4d9d6f405434 100644 --- a/tools/perf/util/hwmon_pmu.c +++ b/tools/perf/util/hwmon_pmu.c @@ -274,7 +274,7 @@ static int hwmon_pmu__read_events(struct hwmon_pmu *pmu) int number; enum hwmon_item item; bool alarm; - union hwmon_pmu_event_key key =3D {}; + union hwmon_pmu_event_key key =3D { .type_and_num =3D 0 }; struct hwmon_pmu_event_value *value; =20 if (ent->d_type !=3D DT_REG) @@ -560,7 +560,7 @@ bool hwmon_pmu__have_event(struct perf_pmu *pmu, const = char *name) struct hwmon_pmu *hwm =3D container_of(pmu, struct hwmon_pmu, pmu); enum hwmon_type type; int number; - union hwmon_pmu_event_key key =3D {}; + union hwmon_pmu_event_key key =3D { .type_and_num =3D 0 }; struct hashmap_entry *cur; size_t bkt; =20 @@ -623,10 +623,11 @@ static int hwmon_pmu__config_term(const struct hwmon_= pmu *hwm, return -EINVAL; } else { union hwmon_pmu_event_key key =3D { - .type =3D type, - .num =3D number, + .type_and_num =3D 0, }; =20 + key.type =3D type; + key.num =3D number; attr->config =3D key.type_and_num; } return 0; --=20 2.47.0.371.ga323438b13-goog