From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 04 Mar 2024 20:05:20 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rhDcm-008dBr-1B for lore@lore.pengutronix.de; Mon, 04 Mar 2024 20:05:20 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rhDcl-0000Tv-5x for lore@pengutronix.de; Mon, 04 Mar 2024 20:05:20 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4oAZh53tcsrSoOggxpuQjZU0mrvZLww67glbpgWA4Ow=; b=VX4ErtqtcMT5RanE5+nCKu2/pO d4sIC+qjdcGHI1O8tN0y2oMl7JoqKn/PK/8Pakm7BB+7v8tCXUvmBklQ3JopJpfToL+TeHAzHJZdg 3Hqa1UM0gUTpEeSqL+iQCe9lenI3iX4FSFCuG3RrIR3Z/MZlB8PIluA/ng1X6QMoGFsCT5QUJvrTB TkoneHKsW2At5hL7ZB5o4RyeAtuI6O41eqTk/m52k8N9/B7/ahR9c9j5dfpJUSmVckV2kF/4mnNbs gwgehZWeoCgxsYWZmIVNWjDRSq9BKjlFcOdpCT4I/ZnJ1u9Nc1zC14kI3YDdcDTIEdDRNuvSvlhUQ ggDHE+nQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhDcA-0000000AJi6-2bbj; Mon, 04 Mar 2024 19:04:42 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhDaP-0000000AIRd-3ZyB for barebox@bombadil.infradead.org; Mon, 04 Mar 2024 19:02:53 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=4oAZh53tcsrSoOggxpuQjZU0mrvZLww67glbpgWA4Ow=; b=PiCTpu/usFchivZeUIIBu4VgY7 1c/bKevh3AbefSoMm3K9BDpklu3MgF8rxJy3hNNMLVxI2wkTxTKoZsisx79YWwty9gRUtMNcP+CLb 7djj6elgn5kvbb9exZ7jeZKAzwuT8oy9y0e64DHQwIXF+aTdhhLiFGRhFPNxEPBPW0HcTBuUghVj6 tw2Hg5TXmjv9ipfZe2uiKwmqDwMHKk6oOMz75Q1KJBsmZ5rsuBDVr9MlyLMUvTgCijeDTKLZ2fbvf tHVQb2+FhHXSLQY6QrO3dIeKv70nq8lqrz7lFB2FiBWVDnZqPjSjorw8X34cz3vXPthiFxrrE/uc/ 1znIEZEg==; Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhDaI-000000051vc-3qCg for barebox@lists.infradead.org; Mon, 04 Mar 2024 19:02:52 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rhDaI-0006F7-CG; Mon, 04 Mar 2024 20:02:46 +0100 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rhDaH-004PLd-Rb; Mon, 04 Mar 2024 20:02:45 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1rhDYK-00Ed9V-1l; Mon, 04 Mar 2024 20:00:45 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 4 Mar 2024 19:59:18 +0100 Message-Id: <20240304190038.3486881-34-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240304190038.3486881-1-a.fatoum@pengutronix.de> References: <20240304190038.3486881-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240304_190247_093660_68C4E4DE X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.4 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 033/113] fs: always check path_init for errors X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) We have three calls to path_init, but Only one of them checks the returned pointer value for errors. This didn't hurt so far, because the function always succeeded, but a follow-up commit will cause it to fail in some circumstances, so prepare for that by duly checking the return value. Signed-off-by: Ahmad Fatoum --- fs/fs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/fs.c b/fs/fs.c index be0b38d8bc30..c034f2cb9a0d 100644 --- a/fs/fs.c +++ b/fs/fs.c @@ -2324,6 +2324,8 @@ static int filename_lookup(struct filename *name, unsigned flags, set_nameidata(&nd, name); s = path_init(&nd, flags); + if (IS_ERR(s)) + return PTR_ERR(s); while (!(err = link_path_walk(s, &nd)) && ((err = lookup_last(&nd)) > 0)) { s = trailing_symlink(&nd); @@ -2529,6 +2531,8 @@ int open(const char *pathname, int flags, ...) set_nameidata(&nd, filename); s = path_init(&nd, LOOKUP_FOLLOW); + if (IS_ERR(s)) + return PTR_ERR(s); while (1) { error = link_path_walk(s, &nd); -- 2.39.2