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GET /api/1.1/patches/2229039/?format=api
{ "id": 2229039, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2229039/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-arc/patch/9e8e43d4f81d8f8b6f68311f1c6f859d718d36e4.1777306795.git.chleroy@kernel.org/", "project": { "id": 48, "url": "http://patchwork.ozlabs.org/api/1.1/projects/48/?format=api", "name": "Linux ARC development", "link_name": "linux-arc", "list_id": "linux-snps-arc.lists.infradead.org", "list_email": "linux-snps-arc@lists.infradead.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<9e8e43d4f81d8f8b6f68311f1c6f859d718d36e4.1777306795.git.chleroy@kernel.org>", "date": "2026-04-27T17:13:44", "name": "[RFC,v1,3/9] x86/umip: Be stricter in fixup_umip_exception()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2170f17908afe3120d1f532ff1c485d2f2e5d3cc", "submitter": { "id": 92089, "url": "http://patchwork.ozlabs.org/api/1.1/people/92089/?format=api", "name": "Christophe Leroy (CS GROUP)", "email": "chleroy@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-arc/patch/9e8e43d4f81d8f8b6f68311f1c6f859d718d36e4.1777306795.git.chleroy@kernel.org/mbox/", "series": [ { "id": 501692, "url": "http://patchwork.ozlabs.org/api/1.1/series/501692/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-arc/list/?series=501692", "date": "2026-04-27T17:13:41", "name": "uaccess: Convert small fixed size copy_{to/from}_user() to scoped user access", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501692/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2229039/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2229039/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=pyS18JOX;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=dWIdgH61;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org;\n envelope-from=linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from bombadil.infradead.org (bombadil.infradead.org\n [IPv6:2607:7c80:54:3::133])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g49Hr1LCzz1xvV\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 28 Apr 2026 03:18:00 +1000 (AEST)", "from localhost ([::1] helo=bombadil.infradead.org)\n\tby bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux))\n\tid 1wHPao-0000000HQrg-3Vkt;\n\tMon, 27 Apr 2026 17:17:58 +0000", "from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25])\n\tby bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux))\n\tid 1wHPam-0000000HQpR-3m2B;\n\tMon, 27 Apr 2026 17:17:57 +0000", "from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n\tby tor.source.kernel.org (Postfix) with ESMTP id D6C426024D;\n\tMon, 27 Apr 2026 17:17:55 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 5B91DC2BCB9;\n\tMon, 27 Apr 2026 17:17:32 +0000 (UTC)" ], "DKIM-Signature": [ "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20210309; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:\n\tMessage-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=e5DMpnZ9AFqwEGpYGsa3VR2jpQNrVCgP2oc8eY9NOC0=; b=pyS18JOXOQOZEL\n\tRlVD5FiOSoxoFaqY698amwWgytSNppXGDBvSuRRDUZdt1ZXfRUgqnzWecxETeTjWrRz95bRi4YQ1D\n\tTTqXQkN9U86b9MUN6IrJzlXTEi5DeSS3owXKR4DY85AvdVPikKe5x7rPaNM29JosPHP3iEejKxYk0\n\tDTGQUaILHmbh2ioDCEQeegDzgMb28Zr9/Urc2oQXLJcQO6zlH5B14wXkuo3ZeU65rHFEjQhTcLwkp\n\tuvNVnNUpjo12HwWSyZa4Gg1XwaTC1N4XlWGefnmuxFzEKPgrRtawAnwb1M7Lv86HE+xcXaCQYnGGZ\n\t5uK8p3+5x1h+53ZlDzFA==;", "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1777310275;\n\tbh=W5kkD2qOaf9p6y+JEmiY6YQ2keZoelr0Bif5djAA9uo=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=dWIdgH61f3FZjJK5/4M8qA2Z3PdTv2PxzuZWcauBhk9DdVxbBkauIdrH8T66hguCp\n\t RKByLYUodinjcBlbYhttuH2LGK1CACi5Chox46drqrLCValqYMs6iS6hvWfa8xjP86\n\t SRX8mzMn7HjzzZ5PMWVnIWvrJFLR/iyEIDn4Oi2BFSrDeboqSnIrX7WfhL6Ub+tY2g\n\t I0hH+wNzy6c//f0TkDzcuax+fX8WXY8rTh4FJ51XM25PFd/tzjClOdpIOdXk4NjGqA\n\t oBIlgUIOAdKFgg5RvdKRR4Lqk1Q+lbng1I1sXXDqtORIX/zFE6g7Yv8vrz97KbzGDV\n\t XrdmpG3tF9W3Q==" ], "From": "\"Christophe Leroy (CS GROUP)\" <chleroy@kernel.org>", "To": "Yury Norov <ynorov@nvidia.com>,\n\tAndrew Morton <akpm@linux-foundation.org>,\n\tLinus Torvalds <torvalds@linux-foundation.org>,\n\tDavid Laight <david.laight.linux@gmail.com>,\n\tThomas Gleixner <tglx@linutronix.de>", "Cc": "\"Christophe Leroy (CS GROUP)\" <chleroy@kernel.org>,\n\tlinux-alpha@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-snps-arc@lists.infradead.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-mips@vger.kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tkvm@vger.kernel.org,\n\tlinux-riscv@lists.infradead.org,\n\tlinux-s390@vger.kernel.org,\n\tsparclinux@vger.kernel.org,\n\tlinux-um@lists.infradead.org,\n\tdmaengine@vger.kernel.org,\n\tlinux-efi@vger.kernel.org,\n\tlinux-fsi@lists.ozlabs.org,\n\tamd-gfx@lists.freedesktop.org,\n\tdri-devel@lists.freedesktop.org,\n\tintel-gfx@lists.freedesktop.org,\n\tlinux-wpan@vger.kernel.org,\n\tnetdev@vger.kernel.org,\n\tlinux-wireless@vger.kernel.org,\n\tlinux-spi@vger.kernel.org,\n\tlinux-media@vger.kernel.org,\n\tlinux-staging@lists.linux.dev,\n\tlinux-serial@vger.kernel.org,\n\tlinux-usb@vger.kernel.org,\n\txen-devel@lists.xenproject.org,\n\tlinux-fsdevel@vger.kernel.org,\n\tocfs2-devel@lists.linux.dev,\n\tbpf@vger.kernel.org,\n\tkasan-dev@googlegroups.com,\n\tlinux-mm@kvack.org,\n\tlinux-x25@vger.kernel.org,\n\trust-for-linux@vger.kernel.org,\n\tlinux-sound@vger.kernel.org,\n\tsound-open-firmware@alsa-project.org,\n\tlinux-csky@vger.kernel.org,\n\tlinux-hexagon@vger.kernel.org,\n\tloongarch@lists.linux.dev,\n\tlinux-m68k@lists.linux-m68k.org,\n\tlinux-openrisc@vger.kernel.org,\n\tlinux-parisc@vger.kernel.org,\n\tlinux-sh@vger.kernel.org,\n\tlinux-arch@vger.kernel.org", "Subject": "[RFC PATCH v1 3/9] x86/umip: Be stricter in fixup_umip_exception()", "Date": "Mon, 27 Apr 2026 19:13:44 +0200", "Message-ID": "\n <9e8e43d4f81d8f8b6f68311f1c6f859d718d36e4.1777306795.git.chleroy@kernel.org>", "X-Mailer": "git-send-email 2.49.0", "In-Reply-To": "<cover.1777306795.git.chleroy@kernel.org>", "References": "<cover.1777306795.git.chleroy@kernel.org>", "MIME-Version": "1.0", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=1000; i=chleroy@kernel.org;\n h=from:subject:message-id; bh=W5kkD2qOaf9p6y+JEmiY6YQ2keZoelr0Bif5djAA9uo=;\n b=owGbwMvMwCV2d0KB2p7V54MZT6slMWS+nxnda1Jdur5TX+RgO1P4hHufdruHR358Lz3BYPORx\n G8pRRuZOkpZGMS4GGTFFFmO/+feNaPrS2r+1F36MHNYmUCGMHBxCsBE9kkxMjTtX+zW2RH44ELN\n UZ/TjtH3Kj+Uzdh01e2y7qEZTgrchx8y/E9kjcpJ3dj/tNZwXUT0XHGmyS9k3dX75mj427u7JaY\n VMwMA", "X-Developer-Key": "i=chleroy@kernel.org; a=openpgp;\n fpr=10FFE6F8B390DE17ACC2632368A92FEB01B8DD78", "X-BeenThere": "linux-snps-arc@lists.infradead.org", "X-Mailman-Version": "2.1.34", "Precedence": "list", "List-Id": "Linux on Synopsys ARC Processors <linux-snps-arc.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-snps-arc>,\n <mailto:linux-snps-arc-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-snps-arc/>", "List-Post": "<mailto:linux-snps-arc@lists.infradead.org>", "List-Help": "<mailto:linux-snps-arc-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-snps-arc>,\n <mailto:linux-snps-arc-request@lists.infradead.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-snps-arc\" <linux-snps-arc-bounces@lists.infradead.org>", "Errors-To": "\n linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "fixup_umip_exception() calls copy_to_user() and checks whether\nthe returned value is strictly positive.\n\nA subsequent patch will change the return of copy_to_user() to\nreturn -EFAULT in case of error.\n\nChange the test to checking that the result is not 0.\n\nAt the time being copy_to_user() return an unsigned value so\n'strictly positive' is the same as 'not 0'.\n\nSigned-off-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>\n---\n arch/x86/kernel/umip.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)", "diff": "diff --git a/arch/x86/kernel/umip.c b/arch/x86/kernel/umip.c\nindex 3ce99cbcf187..dfff28ea1dea 100644\n--- a/arch/x86/kernel/umip.c\n+++ b/arch/x86/kernel/umip.c\n@@ -409,7 +409,7 @@ bool fixup_umip_exception(struct pt_regs *regs)\n \t\t\treturn false;\n \n \t\tnr_copied = copy_to_user(uaddr, dummy_data, dummy_data_size);\n-\t\tif (nr_copied > 0) {\n+\t\tif (nr_copied) {\n \t\t\t/*\n \t\t\t * If copy fails, send a signal and tell caller that\n \t\t\t * fault was fixed up.\n", "prefixes": [ "RFC", "v1", "3/9" ] }