From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) (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 4424D313E1B for ; Fri, 28 Aug 2026 14:31:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=18.9.28.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787927520; cv=none; b=nizM35kMnRitsVSBMJ1Q99cv4dZmeDpGwYRWGcXxqyLkfWLkmOz3AATYgw2TT0Roz7dwDXvx6DmkwD2PyVzxKihAIejQ1bLbePwjt+JWboIklcuxmWTpgLGvizxkMBVypJ2Njrn2sPBfxNoscb0Tks6gH7nRg1Guv7mOXlVcvBk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787927520; c=relaxed/simple; bh=2wWBTRqAEHRJNjhrHLs+in0XswXeNDhXkuQ1UJ/qWC4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Y2bkU2jQ96X7suYjvpCpEbPY1YNmprkFapR8Y/wrvBWs0O7FL+jbJ2GfpLN/OfH+LubQPgj86kKgriDVwHfFhAlRErYe/hgP/x+jnHFo+Gv1/RFarHJX976YQm4LW5pJLrB1IL3YN/ImVN+dl8gcXdpUcM2ATsncP4zAvaHnVrI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mit.edu; spf=pass smtp.mailfrom=mit.edu; dkim=pass (2048-bit key) header.d=mit.edu header.i=@mit.edu header.b=B1JWHNkO; arc=none smtp.client-ip=18.9.28.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mit.edu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mit.edu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mit.edu header.i=@mit.edu header.b="B1JWHNkO" Received: from macsyma.thunk.org (pool-173-48-113-140.bstnma.fios.verizon.net [173.48.113.140]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 67SEViYu018233 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 28 Aug 2026 10:31:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1787927509; bh=mJP2KLoKkQipMvYGh8KVYewkzoQvaueRXWFP9eW+lcY=; h=Date:From:Subject:Message-ID:MIME-Version:Content-Type; b=B1JWHNkOhwBQmSdzJE7WWWWGAQUNODAVRO69ywSPtD6l2SVt2nAOZSeQcveEo0Z3r ZXqdRGWDBzTwmt5BH6b6uGqH5lymbdYkutvqjUcQiROSIkN1ZNswZEKjCPmHrrRXxN gCIi7HjuA9r37w0m9nj3W+9hlmnzMKWH4CJ7wdSeiyLCW9jGxadJI/46h20FpP/7CF 2R6S/R/E9F3wByyAe1rRg1afa3/ZDJiVzZRffGKL9bDHNp0nHu4jVLy08i5t1wv4xF LrhHKoG9mLKxRopap554dDPo/vMsJZSQZAqur5SPNC1ml0VgG19TGD27IR8sykcIbe bo7/tGckWuF8A== Received: by macsyma.thunk.org (Postfix, from userid 15806) id 479CB12466A9; Fri, 28 Aug 2026 10:30:44 -0400 (EDT) Date: Fri, 28 Aug 2026 10:30:44 -0400 From: "Theodore Tso" To: Farhad Alemi Cc: Alexander Viro , Christian Brauner , falemi@asu.edu, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [BUG] WARNING in ext4_journalled_invalidate_folio Message-ID: References: Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, Aug 27, 2026 at 10:45:30PM -0500, Farhad Alemi wrote: > Hello, > > As part of the kernel research at ASU's SEFCOM > lab, we hit the crash below. Crash reports can be found here: > > https://github.com/farhad-alemi/public_bug_reports/tree/main/172-warning-in-ext4-journalled-invalidate-folio/ Please send the reproducer. Note that if it requries a maliciously fuzzed file system, we consider this to be a minor bug (especially if the maliciously file system would be fixed when the system administrator runs fsck on the file system first), and not "security" issue, so feel free to just send it to the list. Cheers, - Ted