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Thu, 15 Oct 2020 11:11:00 EDT Received: from SRVEX01-SZ.bfs.intern (exchange-sz.bfs.de [10.129.90.31]) by mx02-sz.bfs.de (Postfix) with ESMTPS id A058220403; Thu, 15 Oct 2020 17:04:46 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bfs.de; s=dkim201901; t=1602774286; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9Xuug+2hVFBm+B5UTc9CM6NcxF57zXPletFCWeaT4gw=; b=cCGN8umA+LSkB9Eby1Bah6kZIRkI2t76DUyaG6XoQp0hAuOROgfwHJfLSCKAH+yBVziGVf 95DrTBeCqThRK0lCMby4VqmTF+0qPieg35O7Q3IgNDA1lOUoS7uaFr7NF7+rg3PtHrfU0j S8UWH28pY7QgnMU7qMOAj1xsFj7hJ58ijyswr778PtG80M3uQ5Mo9F+EBAleMKwrx6l+t7 s7wwYa0zH92F/xPUc+8iBxmpnCrG3Z2syKYYKcF/BkK/jxq2k9T+wkoGXCrMx72EEm2/Rp MpKfmZ/1+lfenDuJxgsjAMJPKC82GXvzXQSFUTau1yfc0u5tLacUdgPzfQDbaw== Received: from SRVEX01-SZ.bfs.intern (10.129.90.31) by SRVEX01-SZ.bfs.intern (10.129.90.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2106.2; Thu, 15 Oct 2020 17:04:46 +0200 Received: from SRVEX01-SZ.bfs.intern ([fe80::7d2d:f9cb:2761:d24a]) by SRVEX01-SZ.bfs.intern ([fe80::7d2d:f9cb:2761:d24a%6]) with mapi id 15.01.2106.002; Thu, 15 Oct 2020 17:04:46 +0200 From: Walter Harms To: Fedor Tokarev , "bfields@fieldses.org" , "chuck.lever@oracle.com" , "anna.schumaker@netapp.com" , "trond.myklebust@hammerspace.com" , "davem@davemloft.net" , "kuba@kernel.org" CC: "linux-nfs@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "kernel-janitors@vger.kernel.org" Subject: AW: [PATCH] net: sunrpc: Fix 'snprintf' return value check in 'do_xprt_debugfs' Thread-Topic: [PATCH] net: sunrpc: Fix 'snprintf' return value check in 'do_xprt_debugfs' Thread-Index: AQHWovtnyQ5di/wyF0Kmy+Tq/adLsKmYwM+i Date: Thu, 15 Oct 2020 15:04:46 +0000 Message-ID: References: <20201015135341.GA16343@laptop> In-Reply-To: <20201015135341.GA16343@laptop> Accept-Language: de-DE, en-US Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.137.16.40] x-tm-as-product-ver: SMEX-14.0.0.3031-8.6.1012-25728.000 x-tm-as-result: No-10--5.425900-5.000000 x-tmase-matchedrid: 1w4R1hu8EHXed0Ij9t5iQyEyJ8xFEVolPknazlXMVpV+SLLtNOiBhrLs vs6J0rHdg5UXYAmrRiPQVBnHbDgUs6krm8GLHGyo52zh+cq/0Ju62wuq1giw0x3RY4pGTCyHfjc dX7WMS/BFeoHCZIFQtCKkzMT7+4ooN9rojbjxBkwwwOrFPm3RDUpFpc3bJiMeEt/W/Pt5w8clC4 sxsYCYIvc4XRSNAau6vsp8E6m7CmMdrB57CzPAJj8Ckw9b/GFeTJDl9FKHbrl2/QXA1+sfBZ4CI KY/Hg3AcmfM3DjaQLHEQdG7H66TyF82MXkEdQ77PZGkYTzNvZGv1nL/XchjCD2cE0BmbxnjEHAr QLGCQG/e9xXzfruQvg== x-tm-as-user-approved-sender: No x-tm-as-user-blocked-sender: No x-tmase-result: 10--5.425900-5.000000 x-tmase-version: SMEX-14.0.0.3031-8.6.1012-25728.000 x-tm-snts-smtp: CF9EB13A45BC0FE4DCB7889F4C01F5288A58F5C7E6C89D543D611277CA13CB362000:9 MIME-Version: 1.0 X-Spam-Status: No, score=-0.05 Authentication-Results: mx02-sz.bfs.de; none X-Spamd-Result: default: False [-0.05 / 7.00]; ARC_NA(0.00)[]; TO_DN_EQ_ADDR_SOME(0.00)[]; HAS_XOIP(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; MIME_GOOD(-0.10)[text/plain]; DKIM_SIGNED(0.00)[]; RCPT_COUNT_SEVEN(0.00)[11]; NEURAL_HAM(-0.00)[-1.069]; FREEMAIL_TO(0.00)[gmail.com,fieldses.org,oracle.com,netapp.com,hammerspace.com,davemloft.net,kernel.org]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; MID_RHS_MATCH_FROM(0.00)[]; BAYES_HAM(-0.05)[60.08%] Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org if xprt->debugfs->d_name.name can be what ever long it is more clever to use kasprintf() the some for link (no idea how many xprt als possible) jm2c wh diff --git a/net/sunrpc/debugfs.c b/net/sunrpc/debugfs.c index fd9bca2..56029e3 100644 --- a/net/sunrpc/debugfs.c +++ b/net/sunrpc/debugfs.c @@ -128,13 +128,13 @@ static int do_xprt_debugfs(struct rpc_clnt *clnt, struct rpc_xprt *xprt, void *n return 0; len = snprintf(name, sizeof(name), "../../rpc_xprt/%s", xprt->debugfs->d_name.name); - if (len > sizeof(name)) + if (len >= sizeof(name)) return -1; if (*nump == 0) strcpy(link, "xprt"); else { len = snprintf(link, sizeof(link), "xprt%d", *nump); - if (len > sizeof(link)) + if (len >= sizeof(link)) return -1; } debugfs_create_symlink(link, clnt->cl_debugfs, name);