From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 C426C3FF1AE; Sat, 12 Sep 2026 12:44:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789217091; cv=none; b=hwWiCSuDBaPAaaj3m4NDu7odcVuEVDeDzif777/oq13CSKls8l5G/ScCAiwz3b3qQ1z7ilfeMjRvkQ7IbBU8bpWPcHTLC2aCO8R/8pCNAtudmvn/1b0BmjmOfpJFwLw3WpHpYF8Vdh9qW+raDN8KH//3NqiTgaCV8vVUCx91PXM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789217091; c=relaxed/simple; bh=wdyF/F8tCtDBDDFa6ThdBBjr+0NW6ZNCxaBf9Fi+Zac=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=b0rUnpEWGADBqUHK4KTAl3XiebdFDpP2jNCP7L6BvQ5nOJfU3CiDepaY7QSAP8+/TyPwl73fOzgnHfj5l/2zaejvwU5zsqpQaP+m50f4/46hghUM424ClyuI3XLy1Mu25dNuteMyGla6SgrzdIY+mnaTDx6Sv0dzkCDUhQTpMUs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=z1wx27kZ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="z1wx27kZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA4F91F000FF; Sat, 12 Sep 2026 12:44:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789217090; bh=yNntigXL5rGCMyzSlVXQWdFBeaYqMTvrrmebri1G5X0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=z1wx27kZvf+0N1qScYTLY04jc/pFd1MS3qdu6sg2bO584xc6rwneHxFrIECEn1WLe NS33CAvsV1YhmkrwVkWhFYuVTt4b5LCClSnhSa21DhZhnPdjL/+FmEMV5pKNE0+sEx v25q21NMzK2pdfvpAzy+xe43u3EYMqw3mgIfevQg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, sashiko-bot , Arnaldo Carvalho de Melo , James Clark , Adrian Hunter , Namhyung Kim , Sasha Levin Subject: [PATCH 6.12 0869/1376] perf intel-bts: Fix off-by-one in auxtrace_info minimum size check Date: Sat, 12 Sep 2026 08:54:55 +0200 Message-ID: <20260912065626.927364048@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.535295758@linuxfoundation.org> References: <20260912065607.535295758@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Arnaldo Carvalho de Melo [ Upstream commit b9fb8225951ce27e62a2235a71f3ab01137aaec3 ] Same pattern as the Intel PT fix: min_sz is set to sizeof(u64) * INTEL_BTS_SNAPSHOT_MODE, but the code accesses auxtrace_info->priv[INTEL_BTS_SNAPSHOT_MODE], which requires at least INTEL_BTS_SNAPSHOT_MODE + 1 elements. Use (INTEL_BTS_SNAPSHOT_MODE + 1) to ensure the highest accessed index is within bounds. Fixes: d0170af7004dce9c ("perf tools: Add Intel BTS support") Reported-by: sashiko-bot Assisted-by: Claude:claude-opus-4.6 Signed-off-by: Arnaldo Carvalho de Melo Reviewed-by: James Clark Reviewed-by: Adrian Hunter Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin --- tools/perf/util/intel-bts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c index 27d9b5c9fec8b..056dde772eabf 100644 --- a/tools/perf/util/intel-bts.c +++ b/tools/perf/util/intel-bts.c @@ -829,7 +829,7 @@ int intel_bts_process_auxtrace_info(union perf_event *event, struct perf_session *session) { struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info; - size_t min_sz = sizeof(u64) * INTEL_BTS_SNAPSHOT_MODE; + size_t min_sz = sizeof(u64) * (INTEL_BTS_SNAPSHOT_MODE + 1); struct intel_bts *bts; int err; -- 2.53.0