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Wed, 4 Nov 2026 19:17:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793819877; bh=Bp2DPgSMAVNPpocNHMMHSMxcgQhQwNKqaFQNAmEUdgU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=onbfdV/HTacMnVbqXJ+FWmQQPtyp9R0J4UgJy9QwpRXMNAUpXq4U5MgLOpJJmdqil A0IpzV3lIP35dJV6mQZjczsBbIm16npn5PD8YgolOlJ1tMWq4drLkt1BRme9A6hdpk hU7if+GjyblRW+XhOHwJUvOM5bncZ4wy7T8dJkSSmoqVJFYODR5oteYh/K8C4sjSv7 T90fJXFV4MCDOisGIN4JIrvvLoPWPs3/TneCCv2v3EeHxNcbD6g2Laj9xr6GhUYSzJ UbZZpN0HIrsvDaR+/nImX8hLuzR+la3jElQ0/AQag/TzZMVgu2cf2gdOENudtrxOC7 u98wrpF2+gfGQ== From: Christian Brauner To: linux-fsdevel@vger.kernel.org Cc: Linus Torvalds , Jann Horn , Josef Bacik , Chris Mason , Jeff Layton , NeilBrown , Eric Dumazet , Thomas Gleixner , Al Viro , Jonathan Corbet , Christoph Hellwig , Greg Kroah-Hartman , Joel Granados , Kees Cook , Jan Kara , Jan Kara , linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-um@lists.infradead.org, linux-wireless@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, ntfs3@lists.linux.dev, platform-driver-x86@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-sound@vger.kernel.org, netfilter-devel@vger.kernel.org, dri-devel@lists.freedesktop.org, ibm-acpi-devel@lists.sourceforge.net, jfs-discussion@lists.sourceforge.net, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cifs@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, sparclinux@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-doc@vger.kernel.org, linux-serial@vger.kernel.org, linux-atm-general@lists.sourceforge.net, Takashi Iwai , linux-input@vger.kernel.org, linux-raid@vger.kernel.org, linux-ext4@vger.kernel.org, linux-modules@vger.kernel.org, linux-debuggers@vger.kernel.org, "Christian Brauner (Amutable)" , Chuck Lever Subject: [PATCH RESEND v2 07/51] lockd: don't hand out the terminator of nlm_end_grace Date: Wed, 4 Nov 2026 20:17:43 +0100 Message-ID: <20261104-work-procfs-bugfixes-v2-7-021c84d852e0@kernel.org> In-Reply-To: <20261104-work-procfs-bugfixes-v2-0-021c84d852e0@kernel.org> References: <20261104-work-procfs-bugfixes-v2-0-021c84d852e0@kernel.org> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.17-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=879; i=brauner@kernel.org; h=from:subject:message-id; bh=tKzHzMLxBoW/zY681xcBM67Jqe2y1s4JEAk9OycZ8F8=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS9brz82W5pn1bu8jVTxGdEXE56r5qmzRPmKXZbfpl5N e9UmTVSHaUsDGJcDLJiiiwO7Sbhcst5KjYbZWrAzGFlAhnCwMUpABN5aMHwv1BmWTKrQaW1pau+ y7lc/V6hFSvly7z1GnL9Bfe/by3pYGSYdlT+a0yoMVdMgqbeooRHhxKrFq9gfqp47glfRsvFU/e YAQ== X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" X-Spam-Status: No, score=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 nlm_end_grace_read() answers with "Y\n" or "N\n" from a three byte buffer and hands out all three bytes, the terminating NUL included. Leave the NUL out. Fixes: d68e3c4aa416 ("lockd: add a /proc/fs/lockd/nlm_end_grace file") Signed-off-by: Christian Brauner (Amutable) --- fs/lockd/procfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/lockd/procfs.c b/fs/lockd/procfs.c index a01f08c8c2f3..74f7ab77535a 100644 --- a/fs/lockd/procfs.c +++ b/fs/lockd/procfs.c @@ -57,7 +57,7 @@ nlm_end_grace_read(struct file *file, char __user *buf, size_t size, resp[1] = '\n'; resp[2] = '\0'; - return simple_read_from_buffer(buf, size, pos, resp, sizeof(resp)); + return simple_read_from_buffer(buf, size, pos, resp, sizeof(resp) - 1); } static const struct proc_ops lockd_end_grace_proc_ops = { -- 2.53.0