From nobody Sat Feb 7 12:40:53 2026 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 937771FB3 for ; Tue, 27 May 2025 21:50:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748382641; cv=none; b=kYgKf5eYec4CQl/er48MCQ9SdrIwnqPjPRVtMwBThwGp6tEPRBVXoOtkyrBqq+If7fms0UAX0pmcTUf+hs0fSqJG8cpM1A6JkYMdtyYq3xWL63oRiJM2iew/Qyyp8iW6i31ubc2MMjySYENdZK6LgmG7ooFrKiep4CD2q4Ehxu0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748382641; c=relaxed/simple; bh=gStf4rc+PfmUoSWbPTo2dWtfe1mdr6RBm/W15XNCQ5A=; h=Date:Mime-Version:Message-ID:Subject:From:To:Content-Type; b=M/+oL1jteOGTIGwFbbE54efQsz8ZciaQKwSle0f/uxnE7Y/km4OnsezOfFEqvn/Jd9T3hE+5i/3lpgI0F6twNItgcziTNZ3q6wCg+ZwhCIMKrTOQsBLO0W3cB09K6tTQ1n6Gh+trzlxiEAXXWNqm4yUMcEkHpZRlfdPO9LylZwA= 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=g/LjN2E2; arc=none smtp.client-ip=209.85.214.202 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="g/LjN2E2" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-2349fe5be47so8700055ad.0 for ; Tue, 27 May 2025 14:50:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1748382639; x=1748987439; darn=vger.kernel.org; h=to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=dtvDg2edXjwGmFOOqP4AgS1P4/Y9z8Fg7Ga55758bwE=; b=g/LjN2E2aMh3IpPFkNmJWD1aU3RJV6gavJPlehTYsLTFIptgu2pLFyBpgClgXBw312 9gIar/LFSI7+Ib57kcTTLyiSMgS4R6y+v9bPo2r22upXjn4vi6HsjZx2OSeX8qWuW4Vr BlbmcfnjiM8n1hsi2fXgZoZP4DJVw3AvMKoBSZe9r7+5784+zqvY+OmG6Kh7a4S3oi4A 0LY2Mn882vYDhHl6CrJ8Qa9LyiZUEqLwrD/cv5IiuCprtdUNJuaMLxa6scoubzPMwG9z 7qVAOUTBhSoHrzZ+89nzJfD7jS/W8Q1WK11PziLnZ4JezIisYQbJhGZUoCHcc4B6XfOr A4bQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748382639; x=1748987439; h=to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=dtvDg2edXjwGmFOOqP4AgS1P4/Y9z8Fg7Ga55758bwE=; b=kA8LDwEcNVfRYCmHsgaBw8oc6fbC3t0V6Xm6RLF3YKKX26v7l3YuYc0zZL2Bu1dUtG oFd37VBXo9uagDop4BURivTkBq5g5AzmyA2e/mRLwu5KtwBR68/fJnx3NNLVhB6RFGdf yvXgUYMRb5yw9mtV9ENfrtd1fmlXOcG6/I8H/O9qZsfWlCLL32c5fArtHYmW2ZRZj/LY Jx7ERCNrN/Uz0W0+o7RzT/72sXtqoJWq/NXWoq65vhQJ6gdDME2w/T7ZQQrTxDRMQqYe n5So4ZuJONVDEKkF78t0g2dgFuud+T43jCs/cYQffzMFWZI2I2fnxdipeC7FVEvzXRNu T5+w== X-Forwarded-Encrypted: i=1; AJvYcCX02Kb3JP9MUCcy24xuVB2N4r+MOdxxsLTa2Jjp1Psx2hKPWCS0A7ROW7zuQ0pJeGIXKeLxwjMHrd21q0M=@vger.kernel.org X-Gm-Message-State: AOJu0Yy6GxFxhaXtJnYHZY6TEPdDBNGQiANzrnxx5Kruy9u+Lg4akTLR zNxgPxGg7oqkqsfGMRo6ayzch06WMRaSrVEjnEZXhzYW10fAr8KOY+c0dfKgEKXRKkv9q3y2g0H KKYtkSos6Vg== X-Google-Smtp-Source: AGHT+IGNVsuVSkksPsxQ9leFjTvon2JgsNPkZicJCwyJLA7I5bE+HPYfDlveY3Drm+zlsKabaZYyMJGUDsrs X-Received: from plbp4.prod.google.com ([2002:a17:903:1744:b0:223:225b:3d83]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ed8b:b0:234:b41e:37a2 with SMTP id d9443c01a7336-234b41e388dmr28095045ad.11.1748382638788; Tue, 27 May 2025 14:50:38 -0700 (PDT) Date: Tue, 27 May 2025 14:50:35 -0700 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 2.49.0.1204.g71687c7c1d-goog Message-ID: <20250527215035.187992-1-irogers@google.com> Subject: [PATCH v2] perf pmu: Avoid segv for missing name/alias_name in wildcarding 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 , James Clark , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The pmu name or alias_name fields may be NULL and should be skipped if so. This is done in all loops of perf_pmu___name_match except the final wildcard loop which was an oversight. Fixes: c786468a3585 ("perf pmu: Rename name matching for no suffix or wildc= ard variants") Signed-off-by: Ian Rogers Acked-by: Namhyung Kim --- v2. Rebase resolving merge conflicts, add Namhyung's Acked-by. --- tools/perf/util/pmu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index bc1178234d3b..609828513f6c 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -2143,6 +2143,9 @@ static bool perf_pmu___name_match(const struct perf_p= mu *pmu, const char *to_mat for (size_t i =3D 0; i < ARRAY_SIZE(names); i++) { const char *name =3D names[i]; =20 + if (!name) + continue; + if (wildcard && perf_pmu__match_wildcard_uncore(name, to_match)) return true; if (!wildcard && perf_pmu__match_ignoring_suffix_uncore(name, to_match)) --=20 2.49.0.1204.g71687c7c1d-goog