Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp2054005pxu; Tue, 24 Nov 2020 16:01:35 -0800 (PST) X-Google-Smtp-Source: ABdhPJxyA0RdVlHIrL0vmKcNFVeKEfA8aMgkBLyaieqBx7oYNWaAp9OQIgVdKehtF+XZzqKw9Yvc X-Received: by 2002:a17:906:229b:: with SMTP id p27mr873993eja.292.1606262495591; Tue, 24 Nov 2020 16:01:35 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1606262495; cv=none; d=google.com; s=arc-20160816; b=m5jKo+tpj3XFK+j/B+0UqKx53fcn+XqjDNCqrE4bn/TiyMBbn11WX3kXMAtvPGNSJX 2TkjM1Bv5iBJ8RnPHr6CoTJvIKkfFcTeZFyRBtmxu4qyFCkAQ5HYGphjIQbFa2UFjxUF tSwdRbIgEQQDT4hcfTss30vjZNLEhRm5uFAM/DA8Edl+RDd+tVX+yiOKtqttBwcvNAia D4jS07gFHvV17ir7k9XJozHGNfJ1xYA3oPmTtq2KhtC/VZQvqxWnotehO14rFAmksjg9 yXSs4MeFoazH/bJxcsVergJhocSdt0WeK4zETRzywmlpqStF6woOE4+1BOZo+SszPk8W 2rqg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:message-id:user-agent :references:in-reply-to:subject:cc:to:from:date:mime-version :dkim-signature; bh=Ef6cqFP5rtCRJRsC0pbk1fWvr/gryXZqDbAGKXuGsf0=; b=hM+CznFDa3K9KdIUcF+iWreg4sMn8mq6Rqc5uDXlszEBK9K9UMW4WoO7mAuCp++pYO renn41sRrdbcqK693RcswrElftAAQ/39va1aOs63TsNtBEAasl28WHbwYk+I/z7KqKM3 qVU2sMKBTR2Q4FwYkoku5X2mR0OfcXtMmFaJjJl3v+A1Zcy1daMYlDIPUFx5jDudTdsS UiSBAP3ggnLeu1qiw2xHtMP3C1wrnMfrWc3yZStwRHo+OGH+ZTX/bOkRQnM9EDYF54TN DoAmrnXgUGYkbO0nwoSQENJb9lqmFib9oXGPi9mGi5cYyP23Uu9PxoFduuu0qcbNpUZF 7bAg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@natalenko.name header.s=dkim-20170712 header.b=YemTNNq4; 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=REJECT sp=REJECT dis=NONE) header.from=natalenko.name Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id u4si253743ejr.287.2020.11.24.16.01.12; Tue, 24 Nov 2020 16:01:35 -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=@natalenko.name header.s=dkim-20170712 header.b=YemTNNq4; 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=REJECT sp=REJECT dis=NONE) header.from=natalenko.name Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727356AbgKXVYc (ORCPT + 99 others); Tue, 24 Nov 2020 16:24:32 -0500 Received: from vulcan.natalenko.name ([104.207.131.136]:46580 "EHLO vulcan.natalenko.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727966AbgKXVYb (ORCPT ); Tue, 24 Nov 2020 16:24:31 -0500 Received: from mail.natalenko.name (vulcan.natalenko.name [IPv6:fe80::5400:ff:fe0c:dfa0]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by vulcan.natalenko.name (Postfix) with ESMTPSA id 0FD6F8AAF01; Tue, 24 Nov 2020 22:24:28 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=natalenko.name; s=dkim-20170712; t=1606253068; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ef6cqFP5rtCRJRsC0pbk1fWvr/gryXZqDbAGKXuGsf0=; b=YemTNNq45rDxGydtNUuLfNISH2jCVhRnhFHbWWaQkIHyBHC8z5H2mHBnJJgQgB3Yu8chNo QHt/ssDLKmNm+6NK2wW1maqb6n4VypVcLAjoQRoROic98FDJzj+inNcewLtxuhOXD22zTT 4KnZC8NDVQfOTy9/M4k7aLYpgQAY+qc= MIME-Version: 1.0 Date: Tue, 24 Nov 2020 22:24:27 +0100 From: Oleksandr Natalenko To: Ard Biesheuvel Cc: David Laight , linux-efi , kernel list , matthew.garrett@nebula.com, jk@ozlabs.org, Greg Kroah-Hartman Subject: Re: Oops (probably) unmounting /oldroot/firmware/efi/efivars. In-Reply-To: References: <5f31cde519b941308412b3849197ee7c@AcuMS.aculab.com> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: oleksandr@natalenko.name Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi. On 24.11.2020 15:23, Ard Biesheuvel wrote: > Surely caused by > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/efivarfs?id=fe5186cf12e30facfe261e9be6c7904a170bd822 This also soaked through the stable queue into v5.9.11, and now the same BUG is triggered in the latest stable kernel. /cc Greg -- Oleksandr Natalenko (post-factum)