From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E7B4637E2F3; Mon, 3 Aug 2026 10:33:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785753206; cv=none; b=aUlkYc/mRK6yKIRwKg5EZsAOpRUJPOeSteZwXHtwjbrRoCxByFUDTUex6nSmvDjQfDGg2sar3pZZ/DzEUyIQ8UrVmoxh+ljkw06rkyscTZ/ez+MOdTrNvwQctw8Vt+ddnNvuCFSWHdHvxUs8CLMEvnEz6QcjJodnR1pEaYQnh2o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785753206; c=relaxed/simple; bh=2emraA7vYJ+V/gpaYUlHVZOozsNY0erxhiZGRizAnRk=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=tcYYJE+Hh1fKl0ZTXKA4Vs/Hs8hXc87mAoVEmBUCaAGQefgZw5uQwqVFqsUbNLPob19tc++R5/ITygxz/kGV0TWUotyTz7L8NLYeB47D92e9gFHCodvzJSGXyRfvDdq2P4/KmaLaQspKWwYkiRj91/cdTkRZL+CfLY55ED+1yi0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QUAkQtfG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QUAkQtfG" Received: by smtp.kernel.org (Postfix) with ESMTPS id 8E0D8C2BCF4; Mon, 3 Aug 2026 10:33:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1785753205; bh=2emraA7vYJ+V/gpaYUlHVZOozsNY0erxhiZGRizAnRk=; h=From:Subject:Date:To:Cc:Reply-To:From; b=QUAkQtfGhaiKN/PJfIE8HSX89fP9PdfmX20m1eYo7s0Rshu1paxlIeaMOomr9x7q2 mnGRQuFvxVrWMksrRX+kz9+T9ffVM97lwFDF8ghO3fLfROFlI9kJuHdG8JRzGld5Ck NjG8C547dD+0vYKyru5uWVM7Y9SYDp+nw7gZ0yOgZVtFuLLJTMG2VKmd/oVqFXW9a9 dbXtwXXc8Rh5hkGJZEyz2cjqRR/zDgHOlhUS7cbYqrE5hF0DkPHsCzQgDHsP1xQJS/ I15oqRbKfGNVbA+wNQulPoQLJWGgwzHKMXmJvB7lApYbvgJ1lgiFWqa6ODPuBsC3ll HwgUpZIgjnShA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 67F6AC5518E; Mon, 3 Aug 2026 10:33:25 +0000 (UTC) From: Michalis Niarchos via B4 Relay Subject: [PATCH 0/4] perf tools: Fix memory issues Date: Mon, 03 Aug 2026 12:33:19 +0200 Message-Id: <20260803-perf-kvm-fixes-v1-0-a5db849ac973@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDc2ND3YLUojTd7LJc3bTMitRi3URD8zSDxEQDE4vEFCWgpoKiVLAEUE9 0LIRfXJqUlZpcAjJFqbYWALrZqrdyAAAA X-Change-ID: 20260731-perf-kvm-fixes-a17f0aa048ad To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Michalis Niarchos X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1785753204; l=929; i=michael.niarchos@gmail.com; s=20260731; h=from:subject:message-id; bh=2emraA7vYJ+V/gpaYUlHVZOozsNY0erxhiZGRizAnRk=; b=mlRkIPLQJGuCelVBWP8Yafg9cbOuJNC/9/LKkM2UYzC6TGgngfUOBDVIoFb7Eqqp1ysT6e9mn Z8uOaN264rJCHl/X3YdFpQjWYORStigeIStyKlKrrBPU5NdRXW/u6+v X-Developer-Key: i=michael.niarchos@gmail.com; a=ed25519; pk=/LBZRQzfuxTnSaZhgZE8EP7mHr0poyqlKeFssNqkzFE= X-Endpoint-Received: by B4 Relay for michael.niarchos@gmail.com/20260731 with auth_id=912 X-Original-From: Michalis Niarchos Reply-To: michael.niarchos@gmail.com Running: $ perf kvm stat record -a sleep 10 gives this output: [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.361 MB perf.data.guest ] double free or corruption (!prev) In the process of resolving this, I came across some memory leaks. Signed-off-by: Michalis Niarchos --- Michalis Niarchos (4): perf tools: Fix memory leak in cmd_kvm() perf tools: Fix memory leak in kvm_events_report() perf tools: Fix double free and memory leak in kvm_events_record() perf tools: Fix memory leak in cmd_kvm() tools/perf/builtin-kvm.c | 63 ++++++++++++++++++++++++++++-------------------- 1 file changed, 37 insertions(+), 26 deletions(-) --- base-commit: 2162d9b24ba1a9a402baabe5382b33e792aa074f change-id: 20260731-perf-kvm-fixes-a17f0aa048ad Best regards, -- Michalis Niarchos