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{ "id": 2227562, "url": "http://patchwork.ozlabs.org/api/1.1/covers/2227562/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/cover/20260423222209.3054909-1-dhowells@redhat.com/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/1.1/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": "" }, "msgid": "<20260423222209.3054909-1-dhowells@redhat.com>", "date": "2026-04-23T22:22:03", "name": "[0/4] netfs: Yet further miscellaneous fixes", "submitter": { "id": 59, "url": "http://patchwork.ozlabs.org/api/1.1/people/59/?format=api", "name": "David Howells", "email": "dhowells@redhat.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/cover/20260423222209.3054909-1-dhowells@redhat.com/mbox/", "series": [ { "id": 501258, "url": "http://patchwork.ozlabs.org/api/1.1/series/501258/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=501258", "date": "2026-04-23T22:22:03", "name": "netfs: Yet further miscellaneous fixes", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501258/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2227562/comments/", "headers": { "Return-Path": "\n <linux-cifs+bounces-11068-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=HqTMS0Ax;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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d=redhat.com;\n\ts=mimecast20190719; t=1776982946;\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\tbh=FLBZ3JamHmSsxpyB/S98F6Ri7h1MoQngzXKMceXD6+w=;\n\tb=HqTMS0AxKKFwW834SwFYno2GzElYpxr2s28fsNYl82CQ3kJEZlWLOPWOkcyU58feamt4Dc\n\tAWMWJU2ecZqWAE0vz6qq8kUCDPDnBpHl69JCGx5biX3OB7kjNmN9bTSvpnwEbz3tHZAsHk\n\t8H4KVAcEctxXAbX+CulvFsi0tgqY18s=", "X-MC-Unique": "a_PuY7yrPMOQDEIlOYyb7w-1", "X-Mimecast-MFC-AGG-ID": "a_PuY7yrPMOQDEIlOYyb7w_1776982941", "From": "David Howells <dhowells@redhat.com>", "To": "Christian Brauner <christian@brauner.io>", "Cc": "David Howells <dhowells@redhat.com>,\n\tPaulo Alcantara <pc@manguebit.org>,\n\tnetfs@lists.linux.dev,\n\tlinux-afs@lists.infradead.org,\n\tlinux-cifs@vger.kernel.org,\n\tceph-devel@vger.kernel.org,\n\tlinux-fsdevel@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org", "Subject": "[PATCH 0/4] netfs: Yet further miscellaneous fixes", "Date": "Thu, 23 Apr 2026 23:22:03 +0100", "Message-ID": "<20260423222209.3054909-1-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 10.30.177.93" }, "content": "Hi Christian,\n\nHere are yet more miscellaneous fixes for netfslib, one found by Mark Brown\nwhen integrating linux-next and the rest found by Sashiko.dev's AI review[1]:\n\n (1) Fix a return statement that should have been removed from\n netfs_read_sizes() and only happens on 32-bit SMP.\n\n (2) Fix read and write result collection use barriering correctly to\n access a request's subrequest lists without taking a lock.\n\n This adds list_add_tail_release() and list_first_entry_acquire() to\n appropriate incorporate barriering into some list functions.\n\n (3) Fix afs_get_link() to take the vnode->validate_lock around\n afs_read_single() to prevent a race with another caller of\n afs_get_link() also trying to read the symlink content.\n\n (4) Fix the RCU handling of symlinks in RCU pathwalk. The problems were\n that afs_get_link() didn't use proper RCU pointer dereferencing and\n that AFS symlinks can be updated remotely, potentially causing the\n buffer memory to be changed.\n\nThese are applied on top of your vfs.fixes branch. Patch 1 should fix the\nproblem in linux-next integration.\n\nThe patches can also be found here:\n\n\thttps://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=netfs-fixes\n\nThanks,\nDavid\n\n[1] https://sashiko.dev/#/patchset/20260326104544.509518-1-dhowells%40redhat.com\n\nbase-commit: 986563b3799fee66965811df3f46f5bb76736084\n\nDavid Howells (4):\n netfs: Fix wrong return from netfs_read_sizes() on 32-bit SMP arches\n netfs: Fix missing barriers when accessing stream->subrequests\n locklessly\n afs: Fix afs_get_link() to take validate_lock around afs_read_single()\n afs: Fix RCU handling of symlinks in RCU pathwalk\n\n fs/afs/Makefile | 1 +\n fs/afs/dir.c | 33 ++++--\n fs/afs/fsclient.c | 4 +-\n fs/afs/inode.c | 96 +---------------\n fs/afs/internal.h | 35 ++++--\n fs/afs/symlink.c | 242 +++++++++++++++++++++++++++++++++++++++\n fs/afs/yfsclient.c | 4 +-\n fs/netfs/buffered_read.c | 9 +-\n fs/netfs/direct_read.c | 15 +--\n fs/netfs/internal.h | 3 +\n fs/netfs/read_collect.c | 4 +-\n fs/netfs/read_single.c | 12 +-\n fs/netfs/write_collect.c | 4 +-\n fs/netfs/write_issue.c | 3 +-\n include/linux/list.h | 37 ++++++\n include/linux/netfs.h | 1 -\n 16 files changed, 358 insertions(+), 145 deletions(-)\n create mode 100644 fs/afs/symlink.c" }