loop0: detected capacity change from 0 to 32768
btrfs: Deprecated parameter 'usebackuproot'
BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5353)
BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): using crc32c (crc32c-lib) checksum algorithm
BTRFS info (device loop0): using free-space-tree
BTRFS warning (device loop0): couldn't read tree root
BTRFS warning (device loop0): try to load backup roots slot 1
BTRFS warning (device loop0): couldn't read tree root
BTRFS warning (device loop0): try to load backup roots slot 2
BTRFS warning (device loop0): couldn't read tree root
BTRFS warning (device loop0): try to load backup roots slot 3
BTRFS info (device loop0): rebuilding free space tree
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5353 at fs/btrfs/extent-tree.c:3230 __btrfs_free_extent+0x28a4/0x4250 fs/btrfs/extent-tree.c:3230
Modules linked in:
CPU: 0 UID: 0 PID: 5353 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-11952-g6e64f4580381 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__btrfs_free_extent+0x28a4/0x4250 fs/btrfs/extent-tree.c:3230
Code: 0b 01 0f 85 a6 01 00 00 e8 09 84 fc fd e9 c0 01 00 00 80 3d 8c fa c9 0b 01 0f 85 29 02 00 00 e8 f2 83 fc fd e9 43 02 00 00 90 <0f> 0b 90 48 8b 44 24 20 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00
RSP: 0018:ffffc9000d41edc0 EFLAGS: 00010246
RAX: 0000000000000002 RBX: ffff888043da5510 RCX: 0000000000000005
RDX: ffffffff83c313b9 RSI: ffffffff8e6c7ae0 RDI: 00000000fffffffe
RBP: ffffc9000d41ef70 R08: ffff88803b8ec880 R09: 0000000000000002
R10: 00000000fffffffe R11: 0000000000000002 R12: 00000000fffffffe
R13: 0000000000000b45 R14: ffff88804303b8f0 R15: 00000000fffffffe
FS:  00007fbed8fe56c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005598e58825f8 CR3: 0000000042ebb000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1749 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1775 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1972 [inline]
 __btrfs_run_delayed_refs+0xe7f/0x4130 fs/btrfs/extent-tree.c:2047
 btrfs_run_delayed_refs+0xe6/0x3b0 fs/btrfs/extent-tree.c:2159
 btrfs_start_dirty_block_groups+0xd3d/0x10a0 fs/btrfs/block-group.c:3527
 btrfs_commit_transaction+0x674/0x3950 fs/btrfs/transaction.c:2244
 btrfs_rebuild_free_space_tree+0x285/0x760 fs/btrfs/free-space-tree.c:1384
 btrfs_start_pre_rw_mount+0x128f/0x1bf0 fs/btrfs/disk-io.c:3075
 open_ctree+0x293a/0x3a10 fs/btrfs/disk-io.c:3617
 btrfs_fill_super fs/btrfs/super.c:977 [inline]
 btrfs_get_tree_super fs/btrfs/super.c:1937 [inline]
 btrfs_get_tree_subvol fs/btrfs/super.c:2074 [inline]
 btrfs_get_tree+0xf55/0x1820 fs/btrfs/super.c:2108
 vfs_get_tree+0x92/0x2b0 fs/super.c:1815
 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4344 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4321
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbed819038a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbed8fe4e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbed8fe4ef0 RCX: 00007fbed819038a
RDX: 00002000000001c0 RSI: 0000200000000000 RDI: 00007fbed8fe4eb0
RBP: 00002000000001c0 R08: 00007fbed8fe4ef0 R09: 0000000000004810
R10: 0000000000004810 R11: 0000000000000246 R12: 0000200000000000
R13: 00007fbed8fe4eb0 R14: 0000000000005145 R15: 0000200000000580
 </TASK>