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smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="IUyU/T8J"; 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 ECDCD606A328; Wed, 4 Nov 2026 17:46:20 +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=IUyU/T8J Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1A0831F00919; Wed, 4 Nov 2026 17:46:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793814380; bh=mdnthwMs9LvqnLJy6kPpeiwqrlhi6ADC7izliWiN2IE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=IUyU/T8JanEUeWb8OLvnBOF7mcsDaYX0yn50MMyhywpzR+Xd73lI68b+Z0EjhqK7z bkEkttde6fJvRPVGGA2MZkA0GbASE8FC1nT+84ODvZFzTbBCjYw8IWtatNsrtMoyrH KXUF53QFRfDUagwA56DH/VxXp+wT5/pJfjV3gzlKef2KUiN1HSYpnfrnWdn1nbnNKf O/7xCRN+TNpny8Le4H87j8uBb2tQPjPggOwQvaiPHTFrUkQgsfx/jAR3vQ6vrxrWe7 JaBxG35YdcKRtCdLtOxgMygQkmiRV8AYLKhLlP/iKh/wi1njtDUmOUna6ss0EP8ecg vvOH1vOWWni9g== 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 12/51] powerpc/rtas: consume the whole write to /proc/powerpc/rtas/progress Date: Wed, 4 Nov 2026 18:45:55 +0100 Message-ID: <20261104-work-procfs-bugfixes-v2-12-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-debuggers@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=1217; i=brauner@kernel.org; h=from:subject:message-id; bh=uNEn+pHXbIRRMkqtNF6NnFXDW3eMy9Pk3SJ7wJuNwck=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS9zjsreObfmrOX1obn3tw0N6WpU3RvwOStvn2i0U5yp rEGLx+odpSyMIhxMciKKbI4tJuEyy3nqdhslKkBM4eVCWQIAxenAEwk8Agjw1Z5rj/rEq/Xb9Zi nJlScTdg1ruoGZHGhW11TVmdwqnc0xgZOpo+NM6qs41edOyOUPc3kzd2G/9GyxwJqc6SeXR2q9J OfgA= X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit ppc_rtas_progress_write() shows the first 255 bytes of a write and returns that many, so a writer that loops until everything is written shows the rest as a second message. Return the whole count, the rest is ignored. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Christian Brauner (Amutable) --- arch/powerpc/kernel/rtas-proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c index f38df72e64b8..89b165986851 100644 --- a/arch/powerpc/kernel/rtas-proc.c +++ b/arch/powerpc/kernel/rtas-proc.c @@ -311,6 +311,7 @@ static int ppc_rtas_poweron_show(struct seq_file *m, void *v) static ssize_t ppc_rtas_progress_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { + size_t len = count; unsigned long hex; if (count >= MAX_LINELENGTH) @@ -324,7 +325,7 @@ static ssize_t ppc_rtas_progress_write(struct file *file, hex = simple_strtoul(progress_led, NULL, 10); rtas_progress ((char *)progress_led, hex); - return count; + return len; /* clear the line */ /* rtas_progress(" ", 0xffff);*/ -- 2.53.0