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Wed, 04 Nov 2026 11:56:52 -0800 (PST) Received: from localhost.localdomain ([206.206.222.89]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-36ca38fe477sm8703069eec.17.2026.11.04.11.56.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2026 11:56:51 -0800 (PST) From: Siddharth Mishra To: Boris Burkov Cc: dsterba@suse.com, wqu@suse.com, josef@toxicpanda.com, fdmanana@suse.com, mason@kernel.org, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/5] btrfs: tree-checker: reject inline refs not matching the extent type Date: Wed, 4 Nov 2026 12:56:49 -0700 Message-ID: <20261104195649.2422485-1-smish149@asu.edu> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261104192415.GD3301639@zen.localdomain> References: <20261104102323.4090290-1-smish149@asu.edu> <20261104102323.4090290-3-smish149@asu.edu> <20261104192415.GD3301639@zen.localdomain> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, Nov 04, 2026 at 11:24:15AM -0800, Boris Burkov wrote: > > item 9 key (30478336 METADATA_ITEM 0) itemoff 3636 itemsize 33 > > refs 1 gen 13 flags TREE_BLOCK > > tree block skinny level 0 > > (172 0x5) extent owner root 5 > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > > > I assume this was crafted manually, not via btrfs operations with > squotas enabled, right? Right, it is a corrupted image found by fuzzing. I did not find a way to get an owner ref on a tree block with normal operations, the kernel only adds owner refs to data extents. Thanks for the review.