From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793814709; b=pzvGBfyf1B0tsg7VTovplhHqKNlNPYm61VQWIORMnkdzsqUSUtG28k7MAuqxWT8+qD8Y eOxZhlUGUDPi0/JtVysw/542hHdfgUxmyazprXktJ69fMzDXG9n0waOAT1NQGGelj5SIC 8Hs6h4TL2clOpTN5v6MiYxhaScoVR/IX1XVRbngg0H7GCUcIVUYIEGH/pOaCQ2mqAqUFI h8ld0lMjhet4N2tsm84lMVZJ6N7nNcYw/hqskjVLzzZaZESFNKTd/Kju4VTuBm8v5tpD/ R16rSpUZOdrpCCl/Opni9c61eELxhbW5Ome6QBCD7Eo9p6D0ZEL+pXslartrqW5Eohg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793814709; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID: In-Reply-To:References:MIME-Version:Content-Type:X-Mailer: X-Developer-Signature:X-Developer-Key:Content-Transfer-Encoding; bh=frXlYovGKxKiSN/Oj3/IY9GUET6etUhHzbC1M94LuG8=; b=y0RamlyfBtWvBGG4uLfxacs+yi+tlc63HUQsg1/ZADXdRrpSU9EA0fXdRE+/K/mVmPAg t9Z8/I9FlVXx+8zQkC1VVqf7wXg8VClzjvASXW1b1GDMjZbiwH7tQIPh5uatKNTQrnBu4 20LNZiuxPif4sleAlJVLGY9loTerUyilkZKS2G0EicAJK8xZwv46hh0x7bIyQIN9xt2wA YyeLYpoK28wil+9DsyalHBnfWMONR5t5JAgOmlt90KxKKh9urgxf3EolOmCN9KlH5qJXa LXmCQQWzXt+s5+LmlCLa4uT6JWOtRwuXfEzY3tXBUej8/RJv3SHN4MmH7Kbz4jl7wtQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=J5l8Zw0z; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E9437606A33A; Wed, 4 Nov 2026 17:51:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=J5l8Zw0z Received: by smtp.kernel.org (Postfix) with ESMTPSA id 193531F0093A; Wed, 4 Nov 2026 17:51:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793814708; bh=frXlYovGKxKiSN/Oj3/IY9GUET6etUhHzbC1M94LuG8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=J5l8Zw0z4fZQ9sAGiyuZKFV/4Ks48j+EfxrlJEYi7n7otbyz7JFysKU1tHI5wpj88 CpOhI5fgv4CaHLI1k5XmU9YiA46xrA8Q/vpms1IHownsPnCRxeJYtvKMkZ0z9QgNGJ Dt0qEGBEKG5uhOJH57H9KzWgwJVHzqSv2uWCyWP/yhmZTJIZYv4ihYn15949Cj3mSN QjRMpFLnjQyEc/6vhtJSsBrbaSWk3wEW68rnJHO/8rURtjSRpPMZGCFfamkIjqxgLP QLC4T97JjDLFJHcKQFwVspL3aQSwWyfRwRGbw9wXUukNHQZW8xsWkstW7G+uLWK9lD r9NkjTZDIFp9w== 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 v2 25/51] wifi: libipw: don't return 0 from writes to debug_level Date: Wed, 4 Nov 2026 18:47:11 +0100 Message-ID: <20261104-work-procfs-bugfixes-v2-25-bbf7d5546809@kernel.org> In-Reply-To: <20261104-work-procfs-bugfixes-v2-0-bbf7d5546809@kernel.org> References: <20261104-work-procfs-bugfixes-v2-0-bbf7d5546809@kernel.org> X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list 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=1059; i=brauner@kernel.org; h=from:subject:message-id; bh=PSZyn/5j7f+UAGnOkF9zGJ8rErtLF7uTzeHltQyv5ig=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS9zrsr82TRXDvnq8eP1Wy9Ln1f/sr/I6YcdTNlV3pEL JFvLsq/01HKwiDGxSArpsji0G4SLrecp2KzUaYGzBxWJpAhDFycAjCRS/sY/ifVcHOsK0nzflX4 5M3zNcdYuHyXx97Te1lgK7btRfzEQgdGhgfMrr8XiR5rdt334XRQxNzpt78YSt3vXc1o/eVkzmm Ve8wA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit debug_level_proc_write() returns the length of the string it parsed. A write that starts with a NUL byte thus returns 0 and writers that use stdio retry it forever. Return the number of bytes that were written instead, which also stops writes longer than the 11 bytes it looks at from coming up short. Fixes: b453872c35cf ("[NET] ieee80211 subsystem") Signed-off-by: Christian Brauner (Amutable) --- drivers/net/wireless/intel/ipw2x00/libipw_module.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/ipw2x00/libipw_module.c b/drivers/net/wireless/intel/ipw2x00/libipw_module.c index 22358b2c2ecd..552c8ff3928b 100644 --- a/drivers/net/wireless/intel/ipw2x00/libipw_module.c +++ b/drivers/net/wireless/intel/ipw2x00/libipw_module.c @@ -236,7 +236,7 @@ static ssize_t debug_level_proc_write(struct file *file, else libipw_debug_level = val; - return strnlen(buf, len); + return count; } static const struct proc_ops debug_level_proc_ops = { -- 2.53.0