From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DCD0CC001DE for ; Sun, 13 Aug 2023 03:09:33 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-3.v29.lw.sourceforge.com) by sfs-ml-3.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1qV1Tv-0005td-5b; Sun, 13 Aug 2023 03:09:31 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-3.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1qV1Ts-0005tX-BU for linux-f2fs-devel@lists.sourceforge.net; Sun, 13 Aug 2023 03:09:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=In-Reply-To:Content-Type:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=BEzokEGDV8Z/KhPlVETBC4Xu08qiNAIU3oQjqwzGpSo=; b=DvxTKqcn61iuYHT/yjQPNs6Wv5 484+CSHf7IWC75pyG7KoDSG/V94obkTPek64/cIcuRgTCRy869ZO6hi3uW32F5pHZlQxabaUUH3ms cluJd7vzq2Doe3ghR3JedOxoTje7QuT09qov7V0t24Dvp/vwan20665eVL5ZRvc9qnS0=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To :From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=BEzokEGDV8Z/KhPlVETBC4Xu08qiNAIU3oQjqwzGpSo=; b=dh2Tir5OVVg0DYyN3MrOY0eE1V syBdcsVVC5FKhpyhJcXA2ZPl67+T0yO+k9UODEzjcZylGRec9dirDv0gneG4rJQ9xPtQGMGefFLQQ jPTzSWnXY+zMV6iyegB1/pVNzWgpv+l2qZGOazUvCVN0Sj/CovBkbz4DADz+pY0nLOYg=; Received: from casper.infradead.org ([90.155.50.34]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1qV1Tn-0001Lo-4M for linux-f2fs-devel@lists.sourceforge.net; Sun, 13 Aug 2023 03:09:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=BEzokEGDV8Z/KhPlVETBC4Xu08qiNAIU3oQjqwzGpSo=; b=CPH0By8KvU3QAQSOoC5aoHHBao +atYp8bN33Y1sXIIu6UxrMr4Vz9LCJeWwKGRBwRQrJwrHOGe2fyDiIs6HCFwz34qN01EP1gOHLnwv Y9MzZzm6MbYvg3+KumE2ROSB1CT19chq7afRjgpyHL9xLAkVYKYedLeIUPsAg4XcKnmM/z51bgRsh CguhIdziP4UdNH40BUq1es42KhEazO2fU7jGzyf0XihcTp/YcUhetwz1lC0Hiv180ctWe3NZtqETz HQXGWBBZgESQsTvufIIL3JZ35BqNhVXVOhQZQjDWUpJHkj+h0YfnIVowf2VCplRyQbAGfDaIV0Y+G 5zvxXrEw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qV1TO-00B6TH-Lq; Sun, 13 Aug 2023 03:08:58 +0000 Date: Sun, 13 Aug 2023 04:08:58 +0100 From: Matthew Wilcox To: Theodore Ts'o Message-ID: References: <20230812004146.30980-1-krisman@suse.de> <20230812004146.30980-2-krisman@suse.de> <20230812015915.GA971@sol.localdomain> <20230812230647.GB2247938@mit.edu> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230812230647.GB2247938@mit.edu> X-Headers-End: 1qV1Tn-0001Lo-4M Subject: Re: [f2fs-dev] [PATCH v5 01/10] fs: Expose helper to check if a directory needs casefolding X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gabriel Krisman Bertazi , brauner@kernel.org, linux-f2fs-devel@lists.sourceforge.net, Eric Biggers , viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, jaegeuk@kernel.org, linux-ext4@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On Sat, Aug 12, 2023 at 07:06:47PM -0400, Theodore Ts'o wrote: > One could say that this is an insane threat model, but the syzbot team > thinks that this can be used to break out of a kernel lockdown after a > UEFI secure boot. Which is fine, except I don't think I've been able > to get any company (including Google) to pay for headcount to fix > problems like this, and the unremitting stream of these sorts of > syzbot reports have already caused one major file system developer to > burn out and step down. > > So problems like this get fixed on my own time, and when I have some > free time. And if we "simplify" the code, it will inevitably cause > more syzbot reports, which I will then have to ignore, and the syzbot > team will write more "kernel security disaster" slide deck > presentations to senior VP's, although I'll note this has never > resulted in my getting any additional SWE's to help me fix the > problem... > > > So just __ext4_iget() needs to be fixed. I think we should consider doing that > > before further entrenching all the extra ->s_encoding checks. > > If we can get an upstream kernel consensus that syzbot reports caused > by writing to a mounted file system aren't important, and we can > publish this somewhere where hopefully the syzbot team will pay > attention to it, sure... What the syzbot team don't seem to understand is that more bug reports aren't better. I used to investigate one most days, but the onslaught is relentless and I just ignore syzbot reports now. I appreciate maintainers don't necessarily get that privilege. They seem motivated to find new and exciting ways to break the kernel without realising that they're sapping the will to work on the bugs that we already have. Hm. Maybe this is a topic for kernel-summit? _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel