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GET /api/patches/2216358/?format=api
{ "id": 2216358, "url": "http://patchwork.ozlabs.org/api/patches/2216358/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260326104544.509518-25-dhowells@redhat.com/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/projects/12/?format=api", "name": "Linux CIFS Client", "link_name": "linux-cifs-client", "list_id": "linux-cifs.vger.kernel.org", "list_email": "linux-cifs@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260326104544.509518-25-dhowells@redhat.com>", "list_archive_url": null, "date": "2026-03-26T10:45:39", "name": "[24/26] netfs: Check for too much data being read", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d2bf51ddb0f3c7e90e64717b2e3867fd21d5c18f", "submitter": { "id": 59, "url": "http://patchwork.ozlabs.org/api/people/59/?format=api", "name": "David Howells", "email": "dhowells@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260326104544.509518-25-dhowells@redhat.com/mbox/", "series": [ { "id": 497565, "url": "http://patchwork.ozlabs.org/api/series/497565/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=497565", "date": "2026-03-26T10:45:15", "name": "netfs: Keep track of folios in a segmented bio_vec[] chain", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497565/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216358/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216358/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-10547-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-cifs@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=dFc0xWvl;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.105.105.114; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1774522183; cv=none;\n b=Th2UwNmsOLRuC0Q3Crm//EirXN267sw/5PBB8ZNhOr+AymvmsopVsPKC7JKXJhM+09uSrATskKQzYWfulJznu9yDA5xA/R2JSts8xmwC779evkpcrTMeUF4yw1IwcctCqA0wGdDe7rX+363C6jVxyazcteuXX5LTHCByqiqzUmw=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1774522183; c=relaxed/simple;\n\tbh=/pg2sx7Ejglo3JyXv0SQ28GfSrx8nv9BNocJEl2xiZQ=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=sqh0opK2ManVat30RbbePc9ot67FRClEyqk2Ju2+bt0Ls5rpa4qtFmJgGFoCOWzW+qpZlvl/qRiXj3mC9pueDPg8bLeHI7qAA62GP6igSrSMySkVF5c4sTXuzEctKoQG1h2lCA1umL5NzzwYP7VXMxSl/zBk8YTh7zUyY4Wy/kI=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dmarc=pass (p=quarantine dis=none) header.from=redhat.com;\n spf=pass smtp.mailfrom=redhat.com;\n dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com\n header.b=dFc0xWvl; arc=none smtp.client-ip=170.10.129.124", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1774522181;\n\th=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n\t to:to:cc:cc:mime-version:mime-version:\n\t content-transfer-encoding:content-transfer-encoding:\n\t in-reply-to:in-reply-to:references:references;\n\tbh=qTXHjK3561HUqXOE5w7QS6ZLr4v2K1LxsVJ31tdrxyM=;\n\tb=dFc0xWvlZnZi6bizqxhxAk5F7N3xNjPUJaq4pNELqlHZikWQuTByIZvxIvUA2XJFLBcRYk\n\tmaQKw2B4nNfH3AEcWWeQeA0wEG7pnAauXLBsqSAH445SEIDXXQ+Y6fEazXkDUb9niWGFBO\n\t/K/kZrUTqsfE3vhNpDxN8N7PvkJyI5s=", "X-MC-Unique": "MLTlG43wMQ6WTJVEzCwapg-1", "X-Mimecast-MFC-AGG-ID": "MLTlG43wMQ6WTJVEzCwapg_1774522174", "From": "David Howells <dhowells@redhat.com>", "To": "Christian Brauner <christian@brauner.io>,\n\tMatthew Wilcox <willy@infradead.org>,\n\tChristoph Hellwig <hch@infradead.org>", "Cc": "David Howells <dhowells@redhat.com>,\n\tPaulo Alcantara <pc@manguebit.com>,\n\tJens Axboe <axboe@kernel.dk>,\n\tLeon Romanovsky <leon@kernel.org>,\n\tSteve French <sfrench@samba.org>,\n\tChenXiaoSong <chenxiaosong@chenxiaosong.com>,\n\tMarc Dionne <marc.dionne@auristor.com>,\n\tEric Van Hensbergen <ericvh@kernel.org>,\n\tDominique Martinet <asmadeus@codewreck.org>,\n\tIlya Dryomov <idryomov@gmail.com>,\n\tTrond Myklebust <trondmy@kernel.org>,\n\tnetfs@lists.linux.dev,\n\tlinux-afs@lists.infradead.org,\n\tlinux-cifs@vger.kernel.org,\n\tlinux-nfs@vger.kernel.org,\n\tceph-devel@vger.kernel.org,\n\tv9fs@lists.linux.dev,\n\tlinux-erofs@lists.ozlabs.org,\n\tlinux-fsdevel@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tPaulo Alcantara <pc@manguebit.org>", "Subject": "[PATCH 24/26] netfs: Check for too much data being read", "Date": "Thu, 26 Mar 2026 10:45:39 +0000", "Message-ID": "<20260326104544.509518-25-dhowells@redhat.com>", "In-Reply-To": "<20260326104544.509518-1-dhowells@redhat.com>", "References": "<20260326104544.509518-1-dhowells@redhat.com>", "Precedence": "bulk", "X-Mailing-List": "linux-cifs@vger.kernel.org", "List-Id": "<linux-cifs.vger.kernel.org>", "List-Subscribe": "<mailto:linux-cifs+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-cifs+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.4" }, "content": "Put in a check in read subreq termination to detect more data being read\nfor a subrequest than was requested.\n\nSigned-off-by: David Howells <dhowells@redhat.com>\ncc: Paulo Alcantara <pc@manguebit.org>\ncc: netfs@lists.linux.dev\ncc: linux-fsdevel@vger.kernel.org\n---\n fs/netfs/read_collect.c | 8 ++++++++\n include/trace/events/netfs.h | 1 +\n 2 files changed, 9 insertions(+)", "diff": "diff --git a/fs/netfs/read_collect.c b/fs/netfs/read_collect.c\nindex c7180680226c..bacf047029fa 100644\n--- a/fs/netfs/read_collect.c\n+++ b/fs/netfs/read_collect.c\n@@ -545,6 +545,14 @@ void netfs_read_subreq_terminated(struct netfs_io_subrequest *subreq)\n \t\tbreak;\n \t}\n \n+\tif (subreq->transferred > subreq->len) {\n+\t\tsubreq->transferred = 0;\n+\t\t__set_bit(NETFS_SREQ_FAILED, &subreq->flags);\n+\t\t__clear_bit(NETFS_SREQ_NEED_RETRY, &subreq->flags);\n+\t\ttrace_netfs_sreq(subreq, netfs_sreq_trace_too_much);\n+\t\tsubreq->error = -EIO;\n+\t}\n+\n \t/* Deal with retry requests, short reads and errors. If we retry\n \t * but don't make progress, we abandon the attempt.\n \t */\ndiff --git a/include/trace/events/netfs.h b/include/trace/events/netfs.h\nindex df3d440563ec..eeb8386e0709 100644\n--- a/include/trace/events/netfs.h\n+++ b/include/trace/events/netfs.h\n@@ -125,6 +125,7 @@\n \tEM(netfs_sreq_trace_submit,\t\t\"SUBMT\")\t\\\n \tEM(netfs_sreq_trace_superfluous,\t\"SPRFL\")\t\\\n \tEM(netfs_sreq_trace_terminated,\t\t\"TERM \")\t\\\n+\tEM(netfs_sreq_trace_too_much,\t\t\"!TOOM\")\t\\\n \tEM(netfs_sreq_trace_wait_for,\t\t\"_WAIT\")\t\\\n \tEM(netfs_sreq_trace_write,\t\t\"WRITE\")\t\\\n \tEM(netfs_sreq_trace_write_skip,\t\t\"SKIP \")\t\\\n", "prefixes": [ "24/26" ] }