From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2CDD6606A33C for ; Thu, 5 Nov 2026 19:52:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=iOETz2xa; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=lowCxpM8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Reply-To:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Date: Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Cc:To:Subject: From:Message-ID:MIME-Version:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=gJEjJHr+63DkRgcn2DucJbOp2pD2WNeYTaMSKLiQVEU=; b=iOETz2xaXY86rmQHDpHrUUd6OX 7ct8OSs5GjN5qPn3bnWeehF0EijBgbV1YmT9SckwH/gefUlrQwwQNPJvHQog1xjddOvIABTsGI8DZ dCYkS2Hu4+6Tjz6KP3Yeb6+3GMC9dAWfV9yV27TX6K8BTS/dD9WehZ+SleAj+/vmGpZUIeFZDocOF jTK5yV+fDi01DWZg1TZ4beGZtUmml+lc031nvy+0Dfusa06vo6bIZNmkoxGGTUA0//cYQKmzUTW7F V8J2Qw2BrbaFxvRjRTH8g+OEkrrBB8Cok4vXOmLVZEPyQaC5HgMhVJP9Q7lNqe9BBxe9tY0is8sxc K8LJ64MA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP3GY-0000000ANNC-1I6T; Thu, 05 Nov 2026 19:36:54 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP3FS-0000000AMyG-1oSw for kexec@lists.infradead.org; Thu, 05 Nov 2026 19:35:47 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id DAAFD601EB; Thu, 5 Nov 2026 19:35:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 30A151F008A3; Thu, 5 Nov 2026 19:35:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793907345; bh=gJEjJHr+63DkRgcn2DucJbOp2pD2WNeYTaMSKLiQVEU=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=lowCxpM80XbQiSSCcFv25ROY9iPwr8AIjymBRSEeCKy3QRBb1FptmRHlNq0Wjq1/k K8/iyufGkzQLPaSJrtMq7r0Q59oLYpv7F1FIe+/GUzbkWybOWjrwtgx6MUmauz5Wt4 oV10UyRGTXNAt7W7iafOiQPj3dtAFzUh5XC4pmHZNFWGPa3YcQCFuCi93JRRZ+uDtH jVMDhvp+8GKhMC9jEJ2uzOHXpPQBE2ukBHORlZ+DaGIimf+CjVuQPWP5HCJVMkLor/ vhFuj9C4hZBYSNwdm7GtQwF9416SSchhrxNZmyQgRKmmww+fsBfmslktFGiW+AZaab bv76fZfTqneZQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH RESEND v2 15/23] proc: copy in writes to the network namespace entries before pinning To: "Christian Brauner" 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-s390@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-m68k@lists.linux-m68k.org, linux-serial@vger.kernel.org, "Takashi Iwai" , linux-ext4@vger.kernel.org, "Chuck Lever" , tytso@mit.edu, "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" In-Reply-To: <20261104-work-procfs-core-v2-15-76ace653a773@kernel.org> References: <20261104-work-procfs-core-v2-0-76ace653a773@kernel.org> <20261104-work-procfs-core-v2-15-76ace653a773@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 19:35:43 +0000 X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sashiko-reviews@lists.linux.dev Sender: "kexec" X-Spam-Status: No, score=-10.9 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,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 X-Archived-By: > proc_simple_write() already hands ->write() a kernel copy of what was > written but makes that copy with the entry pinned. Let procfs make it > before it pins the entry instead. That covers everything created with > proc_create_net_data_write() and proc_create_net_single_write(), the > afs files and the rxrpc stats. >=20 > So a write to a proc_create_net_single() file without ->write() can > fail with -EINVAL or -EFAULT now before proc_simple_write() gets to > refuse it with -EACCES. >=20 > Signed-off-by: Christian Brauner (Amutable) Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261104-work-procf= s-core-v2-0-76ace653a773@kernel.org?part=3D15