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 D795360741D6 for ; Thu, 5 Nov 2026 19:49:36 +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=Muvme5SJ; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=gNWgV/+5 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=8DCpDU22GwyUXXU78uGXllQ2v7g/KeXfhEOkcmL18gE=; b=Muvme5SJz/ZLxOxNXjT9x6XNtG GY/fmkCQtZ4vOR3DZdEY9n0fTqq7G++7V9fOUteVBZ+HV4Rctm2bNq0b0UU9JgMK2/u/K7wYKXd5u 45rAQE5C3yPKUOBwYse3/OPyNPIuEDUEatgfgKsaErBnnRsIIqBXOZltv1MW5t0Gy1NUyBL1epC0m cnzfTmNLsMuC/Lz1GQdJ3xXgW1IsS5Lx0jwnZrzB2Icoa+xABVUE6gP4LGNojfTETOHbMIlf3UDD4 lxLGbw+bwgC2BOhCSbFEaa/jSBoVNlDqPDlcXu45fS9iW71qLFetYbBrVsKzKnORaS7BbiWCJDWyk 2v3KmerA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP3Sq-0000000APoG-2LG2; Thu, 05 Nov 2026 19:49:36 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP3Sf-0000000APin-3LNj for kexec@lists.infradead.org; Thu, 05 Nov 2026 19:49:26 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 8B7C5423BF; Thu, 5 Nov 2026 19:49:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F02B31F008A1; Thu, 5 Nov 2026 19:49:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793908165; bh=8DCpDU22GwyUXXU78uGXllQ2v7g/KeXfhEOkcmL18gE=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=gNWgV/+51cBdvmdPY926JR4IK8rz+/vZcfXSGI0xBmVXiL/t6jRq8/4Nqruoca4Tz vawcVK0vQ9bvbGYHY9vTrgBf1kP1H2FyzApMaj2XIJwxAdZnPiNgFfrkmuYTwgBV6W ZHCA//Ds/anFgU6W84v0MbRsTtA99oodwUjdj6/yr2ZrPpxwRu37LQ1EcMS8nmtakC HVIopDwR8rn/Ktm/iUbTBoBdm8Ixhns5YqW4IMJYiFdG8hS6tuH4aHxrgj1PRTNuD5 +QRw+U9ULXFANcWxWoLkF1r36NWsWdEbl2HcFDxSQddl+XsQGSKgmTtqWuR2itRHyK vK+cx9EEUCiWQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH RESEND v2 09/26] s390/cio: let procfs copy in writes 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-drivers-v2-9-245e54e87116@kernel.org> References: <20261104-work-procfs-drivers-v2-0-245e54e87116@kernel.org> <20261104-work-procfs-drivers-v2-9-245e54e87116@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 19:49:23 +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: > Implement ->proc_write_buf() for cio_ignore and cio_settle so procfs > copies in what is written before it pins the entry. cio_ignore parses > the list from that copy, up to the first NUL like strncpy_from_user() > handed it to it before. Writes larger than 64k still come up short, now > through PROC_ENTRY_SHORT_WRITES. Writes to cio_settle larger than > PAGE_SIZE - 1 bytes fail with -EINVAL now, it never looked at what was > written. >=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-drivers-v2-0-245e54e87116@kernel.org?part=3D9