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 901582765F5; Fri, 10 Apr 2026 00:40:28 +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=1775781628; cv=none; b=tDQVUfPTN7cnC2U94UAj4+Up1oC17y/Mtmff+R6qAAmUe77hb68+4gy2EF/fJPaFLJc/11v+16MDAvjyyaKMP67ZBz97mAcvs8GLXdRWeFgdY1/1z2RTRi30UcbwQuPdhJryfaK5PHFwwqvoGf4q8NgCillAZavmif++1pGKzYo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775781628; c=relaxed/simple; bh=lIJO53dz/dU74xR+TJ0mkJip/iMvG3Hy7+2H1fVOxzg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lWxq8k7kNBHubb18O2TQ+Bds/JluMp2Av9d1+TLbdT3jl7R49ijscqplPQo0zg3wwiRaGqdrUyYMm4Z+mVw3txMJdy4MsTV/hsGDBxbCFcBu8QfwhYv45izr0IrrbHNe4A75KxUhBtoNps7OtNTKwZ7TY9p6fiU9o7cnAjiNIhg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uTVMxaP1; 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="uTVMxaP1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8741FC2BC87; Fri, 10 Apr 2026 00:40:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775781628; bh=lIJO53dz/dU74xR+TJ0mkJip/iMvG3Hy7+2H1fVOxzg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uTVMxaP13l00gIBW8vf7eHtgfRRHYUiYK6E/R+GjwpTGMtp9wF1hUXgBjt8cofRfr ys1ua5qU6SKj8Hoh6YaPE59lclJ038MSTtMJ3G8MXEcTL5t+hF22hhPvirQypGZYOd V2h+SmHRM0QG/se4BKAaGLulDsUbNeUvlW9vUCQDqo47qXjuO8m6NPs168C68goPKC xYtu1HFWOe5o+XmcxRmw2VAwJN/0D2CWeV2xeo5kiMhE7LA0JxmH7ffJpf+jFYz8hh icG/RyvWCyUdoi8xFJ7BzDqeFOWUhOxcVspM0OmQDWPJv7F9piMYz5vTOlcMlyWbo3 YXhfcaUW7ASqg== From: Arnaldo Carvalho de Melo To: Namhyung Kim Cc: Ingo Molnar , Thomas Gleixner , James Clark , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo Subject: [PATCH 01/13] perf header: Validate nr_domains when reading HEADER_CPU_DOMAIN_INFO Date: Thu, 9 Apr 2026 21:39:48 -0300 Message-ID: <20260410004000.148138-2-acme@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260410004000.148138-1-acme@kernel.org> References: <20260410004000.148138-1-acme@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Arnaldo Carvalho de Melo Further validate the HEADER_CPU_DOMAIN_INFO fields, this time checking the nr_domains field. Assisted-by: Claude Code:claude-opus-4-6 Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/header.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index c6efddb70aee2904..a2796b72adc4d908 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -3731,6 +3731,12 @@ static int process_cpu_domain_info(struct feat_fd *ff, void *data __maybe_unused if (do_read_u32(ff, &nr_domains)) return -1; + if (nr_domains > max_sched_domains) { + pr_err("Invalid HEADER_CPU_DOMAIN_INFO: nr_domains %u > max_sched_domains (%u)\n", + nr_domains, max_sched_domains); + return -1; + } + cd_map[cpu]->nr_domains = nr_domains; cd_map[cpu]->domains = calloc(max_sched_domains, sizeof(*d_info)); -- 2.53.0