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 5AF891B807 for ; Sat, 27 Jan 2024 21:59:31 +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=1706392773; cv=none; b=hm/HIf/51dNqpVYhtuoJ1jhKnW5u1u+KeIuifeiz2ySH2Xyi5dop0Q7psPKGtEcoN4+gL9T+hNvTOYDdcCaqs9iZnqRRxqM5NTWoSzlzV3o55L78fZkX2lCo54R9cAa/qn+vemHKsEneJKkoyH2UChMf7NE1S1ymqvlgJdl9uDY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706392773; c=relaxed/simple; bh=G/6KdXu31T1VAui/RJwqf6i/24VbdcZQazuZ9wjU2fQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Yg7/G1vRmLP/Z0eHiadIjfO4khwEeTXsMkKF+Krf3GHjvaV6+nh/sB27ufMB85S9S677VvrDHQl/h6yxvwbNK3RI1kmb7GY8PdfnTpY2CMKfWBTg3yHAgW4KqNZcp5Ct282C6Jg7zxi2+8rr8U+vb7aWSbxsKbzCHLod2jn1x/0= 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=Wt/iIAWY; 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="Wt/iIAWY" Received: from cwcc.thunk.org (pool-173-48-112-211.bstnma.fios.verizon.net [173.48.112.211]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 40RLwvVr024115 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 27 Jan 2024 16:58:59 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1706392741; bh=G/6KdXu31T1VAui/RJwqf6i/24VbdcZQazuZ9wjU2fQ=; h=Date:From:Subject:Message-ID:MIME-Version:Content-Type; b=Wt/iIAWYf1XC1gaI24a7MJaAJTcFxw1KSvcT6YWZ0T7RxjvDxYv4JXWL+ukbYPPDQ lH9WT7iOCqHq90Sh08iByhVGVPc9kUTGjLr3qsQ6//mLLOuMI1J114gHjANv+/ah0/ wRBsDOOH05nnWw3HAOx5FvIBGfUt70ID2BVlUkbVljCdEPEwstuAmPz1kx/EFo1/fD ljKJJw69gTjfm/WFXhIZmw2JWq3Yc4xzSI6dt5ftMPsgAn5cFPvE+Cu/9xrqxT3n5/ mEl2/Q5u99OKw695+WucacU7KjcejFMhQt4mHEXKAtRj6L5t6CXgjgjt5f/oljmbBa lcZd4i4r98qEw== Received: by cwcc.thunk.org (Postfix, from userid 15806) id B138315C065B; Sat, 27 Jan 2024 16:58:57 -0500 (EST) Date: Sat, 27 Jan 2024 16:58:57 -0500 From: "Theodore Ts'o" To: syzbot Cc: adilger.kernel@dilger.ca, axboe@kernel.dk, brauner@kernel.org, jack@suse.cz, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [ext4?] KASAN: use-after-free Read in ext4_find_extent (3) Message-ID: <20240127215857.GC2125008@mit.edu> References: <000000000000c7970f05ff1ecb4d@google.com> <00000000000064064a060fe9b55a@google.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <00000000000064064a060fe9b55a@google.com> #syz fix: fs: Block writes to mounted block devices