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[23.128.96.18]) by mx.google.com with ESMTP id dn23si3682045edb.27.2021.01.08.10.13.35; Fri, 08 Jan 2021 10:14:00 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=TeZ4aQU9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727429AbhAHSMj (ORCPT + 99 others); Fri, 8 Jan 2021 13:12:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726011AbhAHSMj (ORCPT ); Fri, 8 Jan 2021 13:12:39 -0500 Received: from mail-yb1-xb32.google.com (mail-yb1-xb32.google.com [IPv6:2607:f8b0:4864:20::b32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C8045C061380 for ; Fri, 8 Jan 2021 10:11:58 -0800 (PST) Received: by mail-yb1-xb32.google.com with SMTP id d37so10182154ybi.4 for ; Fri, 08 Jan 2021 10:11:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=FGuqOMzVk9XTfSbayKplmXBcPIXgslBdQRCunIBHgwk=; b=TeZ4aQU9Pqm0Bkg6WXniBfSiOk5leVZxf3P/UCpEZ2TfrrCGx/qHUim2Q7Y1KUkulW it6ah2sQv6t+gEDT6FeNsYtP5KnZyuQkW+ppPe2lbJUhZbXGA6stF+ua7tBk8l95VFKT Jl/i2WvvUbbQXy+6sSUteccIXjDeMf/isGbkHKNyu48cw7+m9zJsg8z/2QlKOvjiy8rv fuPlDfUusKTnZ5LqWqITnActxTq99fkly/VF2Pncr/ryBdKW+2u6lL7522/xM9z7YObw 14MS9o/cwkfWpeLZCZTmValbm+ZEzCECX5xaMSClISsLq1NA7tKcIkBbYopoApcDXD2F DgzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=FGuqOMzVk9XTfSbayKplmXBcPIXgslBdQRCunIBHgwk=; b=sWZcIpueQr977Xa3+fdx9FT79kaSVMglY99mCID3IjFm82by5eLDOrmjCjgmXc1Yle y0xgimgu2itwGncMhrK1tNzxqLdCYd6TPRx4xlKpG7u/nDMmwKWHUX7LCrvcZd9FtcBp aGtgt7vkr59mJSY21ofVCqajCSO6VffHtBaWiaT9JQTcJeYNv9q8kyrvXnkFBtGobMme am4e+sHgJfWJmEAkXj8m1svTC5j/pUATgvOOwgeFBzjHX/2Fj1HsPPcICeFbZmLt32i/ dh8mKb+yv63hUv63mIXCgNpWTSR44dC8nSyEGq3+wjoXpXCzngIgsgW821rNu6YHZaGa rMMg== X-Gm-Message-State: AOAM531yE4mlTLbRPIAX5Bz7meF4UMOs7gLnVA95jA/egJxzxvyb8ja7 XaUNUaaUBZPVl8gfACxL/a8AL7vNtgvZyFNnzw9XgIKF X-Received: by 2002:a25:d6d0:: with SMTP id n199mr6923617ybg.27.1610129518130; Fri, 08 Jan 2021 10:11:58 -0800 (PST) MIME-Version: 1.0 References: <90b1b5c8-36d5-4094-add4-3a2d211085c2@www.fastmail.com> In-Reply-To: <90b1b5c8-36d5-4094-add4-3a2d211085c2@www.fastmail.com> From: Andrii Nakryiko Date: Fri, 8 Jan 2021 10:11:47 -0800 Message-ID: Subject: Re: Linux 5.11-rc2 To: Christopher William Snowhill Cc: open list Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 8, 2021 at 3:12 AM Christopher William Snowhill wrote: > > There appears to be a regression with the filesystem NLS modules. I cannot load any of them. They all produce: > > modprobe: ERROR: could not insert 'nls_cp437': Invalid argument > > The system journal reports: > > Jan 08 02:04:56 mrgency kernel: BPF:No data > Jan 08 02:04:56 mrgency kernel: failed to validate module [nls_cp437] BTF: -22 > Seems like you are getting module BTF with absolutely no types and strings, and BTF verification fails for such case (currently). Can you please share your .config, and also let me know what version of pahole do you have (pahole --version)? Thanks! The fix is to allow such "empty" BTF, most probably, but I'd like to double-check nothing fishy is going on before that. > As a result, I cannot mount vfat filesystems with the usual CP437 default. Or any other code page, for that matter.