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Mon, 9 Mar 2026 22:19:52 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 1c3UFohHr2n6LQAAD6G6ig (envelope-from ); Mon, 09 Mar 2026 22:19:52 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Cc: gality369@gmail.com Subject: [PATCH 0/2] btrfs: add free space tree checks except for FREE_SPACE_BITMAP Date: Tue, 10 Mar 2026 08:49:24 +1030 Message-ID: X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-3.01 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:dkim,suse.com:mid,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns]; RCPT_COUNT_TWO(0.00)[2]; RCVD_COUNT_TWO(0.00)[2]; FREEMAIL_CC(0.00)[gmail.com]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_NONE(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.com:+] X-Rspamd-Action: no action X-Spam-Flag: NO X-Spam-Score: -3.01 X-Spam-Level: X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Queue-Id: B2AF34D297 There is a fuzzed image report (*) that a bad item size for FREE_SPACE_BITMAP item can lead to various problems. And I'm surprised that we do not have any checks for such critical tree, so let's add the proper checks for FREE_SPACE_INFO and FREE_SPACE_EXTENT items The check for FREE_SPACE_BITMAP item is reserved for the reporter, whose initial fix is not properly put into tree-checker, and also as an example for the reporter to follow. Qu Wenruo (2): btrfs: tree-checker: introduce checks for FREE_SPACE_INFO btrfs: tree-checker: introduce checks for FREE_SPACE_EXTENT fs/btrfs/tree-checker.c | 70 +++++++++++++++++++++++++++++++++ include/uapi/linux/btrfs_tree.h | 3 +- 2 files changed, 72 insertions(+), 1 deletion(-) -- 2.53.0