From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7EB1D4704A; Mon, 29 Dec 2025 21:49:29 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2562A40662; Mon, 29 Dec 2025 21:48:47 +0100 (CET) Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) by mails.dpdk.org (Postfix) with ESMTP id 92DF140662 for ; Mon, 29 Dec 2025 21:48:45 +0100 (CET) Received: by mail-wm1-f50.google.com with SMTP id 5b1f17b1804b1-477632d9326so58279695e9.1 for ; Mon, 29 Dec 2025 12:48:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1767041325; x=1767646125; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FxsF3XY0l0IbGwp44EoJybmMHW80EKZOrZApeykoPeU=; b=hOSrN5J5EReF7Q2eVXaaUXago5teJIjYEG/0bCcJSg91q5v2yW/3v4k0ZtXQtaaf0F Jn/UPnc0itjgcb2eqC8cOllMVaHnCgl61jx8mQwU4Kgb/mogATAh8eDmf5MkYvWxxx5W mL+Z0uqmjy/rSNkbumNeEbxqlD0i+px3a71wld3wEIPf477n+FdD91a6HgAdP1Pb1khf /axuf3N7K2vUh2S5EkdIooB4ScnFYl9+f75qQleXDiA5wq/B9xOK+Rc7K0TGtbkVPNTE PW5X4Pl4RovDXCuMBd6GtlJxlcNA71e4B3f7j4A8X2HvRkzplcAOlYDdJDb8uuaA6Nwa YEGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767041325; x=1767646125; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=FxsF3XY0l0IbGwp44EoJybmMHW80EKZOrZApeykoPeU=; b=qJRdudyLb1gNCWyxKNJNIS0yZBV1SFzvfV8GRvoYE+0zv5N42eXEcBfq9+5CEO5Kh6 kozMSn0gU2T9idTbxzPsa20TqCfsAoIPBPovocahyJiCnVEdPMfsFDtCZ+iPqTTWx72b oxMVqyaA98gBS9O2YApNaDGxAbJi2Hsg3DD1BygHrgkqm92NSg5opS3UUrl7MOZ3ZQTT h0f4Fy+Gagu2GTpnO48xSkNNWt09LIKRXRXtWB9qaSp3irlfTlo/SjjV087OlaznN7d2 RzJNcCslT3/lOwFo6HWqWRJFJmI2DO8dSmdr0RTh0WR5NYKB4+6uB6095Hju99RYpx1+ cn0A== X-Gm-Message-State: AOJu0YxMJFvOdnGZFr4jo2rYmSWVnpX1aooGO7EfEG+CC9wVjT/gjKcO 6x2FfXhFMBORqAzW4bHDVs/0C0BQRUWwVHVsuVudEkspJ3mKYLIGOCZEbSGb2e4k4HQdTbC4PgB J9OGndso= X-Gm-Gg: AY/fxX6CoIdKylcblaA+yG3EG9dc6jd33w0qem/jrevCHhdri/oydx5r3OFOZlwCMFf OfV485dvGK4bS1w8NGmylUooj+06QWnABjixMlRPEkch2prD/wIIGyaXjfKmpW9g9FtegVGsz0M Rq0nMqOFuM0lagVPZW3wbDeLHnfjZY0uIz7gdCre+f/+PME919VgbdobHSgokNM0b/Dbp9Oif6i ZC7lqVh+Z1X3dxizDCXHig46iOmCVVirq4qVczI+grG7Hy0qKY3Jo/csbFUwczkL4XKvuZHGePU Z34mfr+H4OnCbA9Winb7uqzb0IMi+2p3Y1KvwSppYDs+CfCp7wjs0W8NFXJ17lvbqiWriLuL/lZ zOk+4AEbQFBQY5EeJbugdsQQtTeLvVkQFrc6KaXY2zTE9205oIuFI08rWGeJHmNW3F9g/tItail zbkXx9d12LWkr+tsKUluS/fgS19czAMYgtFHvdBKw3mry5YYz4aA== X-Google-Smtp-Source: AGHT+IFR5op7MsS0cdqjJ/mOtCGgSw+u7p9/7Qr7YI39BCYm4jzsb/YtI3U8PCMiWBWHU0o8vhwifw== X-Received: by 2002:a05:6000:248a:b0:431:8f8:7f31 with SMTP id ffacd0b85a97d-4324e7021cdmr37922369f8f.56.1767041325134; Mon, 29 Dec 2025 12:48:45 -0800 (PST) Received: from phoenix.lan (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4324eab2c4fsm64676298f8f.42.2025.12.29.12.48.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Dec 2025 12:48:44 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger Subject: [PATCH v9 10/18] eal: add check for sysfs path overflow Date: Mon, 29 Dec 2025 11:38:08 -0800 Message-ID: <20251229204818.61231-11-stephen@networkplumber.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251229204818.61231-1-stephen@networkplumber.org> References: <20251202172626.283094-1-stephen@networkplumber.org> <20251229204818.61231-1-stephen@networkplumber.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Shouldn't happen but in theory sysfs socket could overflow. Add a check for it. Signed-off-by: Stephen Hemminger --- lib/eal/linux/eal_hugepage_info.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/lib/eal/linux/eal_hugepage_info.c b/lib/eal/linux/eal_hugepage_info.c index 7161b1a2fb..fe3351259e 100644 --- a/lib/eal/linux/eal_hugepage_info.c +++ b/lib/eal/linux/eal_hugepage_info.c @@ -150,8 +150,12 @@ get_num_hugepages_on_node(const char *subdir, unsigned int socket, size_t sz) return 0; } - snprintf(path, sizeof(path), "%s/%s/%s", + if (snprintf(path, sizeof(path), "%s/%s/%s", socketpath, subdir, nr_hp_file) >= PATH_MAX) { + EAL_LOG(NOTICE, "Socket path %s/%s/%s is truncated", socketpath, subdir, nr_hp_file); + return 0; + } + if (eal_parse_sysfs_value(path, &num_pages) < 0) return 0; -- 2.51.0