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 (5316)
BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): using crc32c (crc32c-intel) checksum algorithm
BTRFS info (device loop0): disk space caching is enabled
BTRFS warning (device loop0): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
BTRFS info (device loop0): rebuilding free space tree
BTRFS info (device loop0): disabling free space tree
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop0): balance: start -d -m
BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5316 at fs/btrfs/extent-tree.c:3195 __btrfs_free_extent+0x2da9/0x3a10 fs/btrfs/extent-tree.c:3195
Modules linked in:
CPU: 0 UID: 0 PID: 5316 Comm: syz.0.0 Not tainted 6.13.0-rc3-syzkaller-00289-g48f506ad0b68 #0
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+0x2da9/0x3a10 fs/btrfs/extent-tree.c:3195
Code: fd 0b 00 00 48 8b 44 24 20 8b 10 48 89 df 48 c7 c6 20 13 4b 8c e8 b7 ab 50 fd 41 bd 8b ff ff ff 4c 8b 24 24 e9 07 f0 ff ff 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 10 80 3c 01 00
RSP: 0018:ffffc9000d5aec20 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000fffffffe RCX: 13f33e4d12e6b200
RDX: 0000000000000002 RSI: ffffffff8eea22b0 RDI: 00000000fffffffe
RBP: ffffc9000d5aedf0 R08: 0000000000000005 R09: ffffffff83b6e53a
R10: 0000000000000002 R11: ffff88801aae0000 R12: fffffffffffffff8
R13: ffff888052932460 R14: 0000000000823000 R15: ffff8880445c3628
FS:  00007fb52b2576c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003000 CR3: 0000000033028000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2007 [inline]
 __btrfs_run_delayed_refs+0x102a/0x4310 fs/btrfs/extent-tree.c:2077
 btrfs_run_delayed_refs+0xe3/0x2c0 fs/btrfs/extent-tree.c:2189
 btrfs_start_dirty_block_groups+0xcaf/0x10e0 fs/btrfs/block-group.c:3488
 btrfs_commit_transaction+0x6ae/0x3720 fs/btrfs/transaction.c:2225
 prepare_to_merge+0x8b3/0x1610 fs/btrfs/relocation.c:1877
 relocate_block_group+0xafc/0xd40 fs/btrfs/relocation.c:3746
 btrfs_relocate_block_group+0x77d/0xd90 fs/btrfs/relocation.c:4081
 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3494
 __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4278
 btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4655
 btrfs_ioctl_balance+0x493/0x7c0 fs/btrfs/ioctl.c:3670
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb52a385d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fb52b257038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb52a575fa0 RCX: 00007fb52a385d29
RDX: 0000000020000180 RSI: 00000000c4009420 RDI: 0000000000000006
RBP: 00007fb52a401aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb52a575fa0 R15: 00007fff513d1418
 </TASK>