From nobody Tue Nov 26 22:12:43 2024 Received: from out-178.mta0.migadu.com (out-178.mta0.migadu.com [91.218.175.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CF048176228; Tue, 15 Oct 2024 20:28:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729024100; cv=none; b=NbO0QEq7upQaiaicVCODU85wPGbHSB/hgnkcO2CdRrYmqnZdx0/3KZm3mhMx7032oewBTE6Gy3JDCtVxRgFWNP5+EoR4WgJmU6geBnij5RgdfC0X7yngCOGTPkSo4a3pbpNwi33V8xs55+0SwLvgW9BBw0dlLrvV4L9DAGBrOZQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729024100; c=relaxed/simple; bh=Sdy3ffOIi7k8Sjn9zIVT7VcbkCSMRxGWs0fyYz9MKkI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=b7oglDOgvEaxA9l07RsYu8bkWwC0NnWUqkivQ0jPBHRAZ4hCcCJavcZ49ThwVQoR2feXtz5NhjxuQmGFZ+M3A7YWr4flqEmC21cFSFqI3OXL+64xxjjsaGEuppDG2VLHrp2jrcC7ojT32qcYUGm8m74U/mqJl9/U3HIVZFPqusE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=DPdt0vNJ; arc=none smtp.client-ip=91.218.175.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="DPdt0vNJ" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1729024096; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=KFE8a5vA6V3Hg5gG1lNgnbGvgCy1xfGED61Xl0i9E8U=; b=DPdt0vNJZKSNbkv4TgnfylArPxdK7eEEicgPqq6lJs8Y/VT+pzCx+ZGBkHWYh7sRgIXb1q JPdlsGweOa2edtvO1/Edy6vJ+QwJ537JkZrAbIVqopL+uVjSFLsTllzUF1hXDb/bv0eyF5 UiH1iz4/cken6ql7w+P9PnwMfJxI6h8= From: Thorsten Blum To: Trond Myklebust , Anna Schumaker , Kees Cook , "Gustavo A. R. Silva" Cc: Thorsten Blum , linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [RESEND PATCH] nfs: Annotate struct pnfs_commit_array with __counted_by() Date: Tue, 15 Oct 2024 22:27:31 +0200 Message-ID: <20241015202731.2638-2-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Add the __counted_by compiler attribute to the flexible array member buckets to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Compile-tested only. Signed-off-by: Thorsten Blum --- include/linux/nfs_xdr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 12d8e47bc5a3..559273a0f16d 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1336,7 +1336,7 @@ struct pnfs_commit_array { struct rcu_head rcu; refcount_t refcount; unsigned int nbuckets; - struct pnfs_commit_bucket buckets[]; + struct pnfs_commit_bucket buckets[] __counted_by(nbuckets); }; =20 struct pnfs_ds_commit_info { --=20 2.47.0