loop0: detected capacity change from 0 to 32768
BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5106)
BTRFS info (device loop0): first mount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d
BTRFS info (device loop0): using sha256 (sha256-avx2) checksum algorithm
BTRFS info (device loop0): using free-space-tree
BTRFS info (device loop0): balance: start -d -m
BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5106 at fs/btrfs/extent-tree.c:843 lookup_inline_extent_backref+0x11b0/0x1660 fs/btrfs/extent-tree.c:843
Modules linked in:
CPU: 0 UID: 0 PID: 5106 Comm: syz.0.0 Not tainted 6.12.0-rc3-syzkaller-00044-g2f87d0916ce0 #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:lookup_inline_extent_backref+0x11b0/0x1660 fs/btrfs/extent-tree.c:843
Code: 00 48 3b 84 24 80 01 00 00 0f 85 88 04 00 00 89 d8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 91 e6 e2 fd 90 <0f> 0b 90 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 4c 8b 6c 24 48 74 08
RSP: 0018:ffffc9000b53e8a0 EFLAGS: 00010283
RAX: ffffffff83b200bf RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000b2c2000 RSI: 0000000000019eb8 RDI: 0000000000019eb9
RBP: ffffc9000b53ea70 R08: ffffffff83b1f379 R09: 1ffffd40001ae870
R10: dffffc0000000000 R11: fffff940001ae871 R12: dffffc0000000000
R13: ffff8880122f8000 R14: ffff88803bd35210 R15: ffffc9000b53e9e0
FS:  00007ff1b27386c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75c51c6440 CR3: 0000000038a14000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 insert_inline_extent_backref+0xd9/0x2b0 fs/btrfs/extent-tree.c:1193
 __btrfs_inc_extent_ref+0x262/0x790 fs/btrfs/extent-tree.c:1491
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1738 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1766 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2031 [inline]
 __btrfs_run_delayed_refs+0x11a0/0x4680 fs/btrfs/extent-tree.c:2101
 btrfs_run_delayed_refs+0x188/0x2c0 fs/btrfs/extent-tree.c:2213
 qgroup_account_snapshot+0xaf/0x3d0 fs/btrfs/transaction.c:1567
 create_pending_snapshot+0x1270/0x2a10 fs/btrfs/transaction.c:1850
 create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1921
 btrfs_commit_transaction+0xf19/0x3740 fs/btrfs/transaction.c:2400
 prepare_to_relocate+0x3c4/0x4c0 fs/btrfs/relocation.c:3586
 relocate_block_group+0x16c/0xd40 fs/btrfs/relocation.c:3611
 btrfs_relocate_block_group+0x77d/0xd90 fs/btrfs/relocation.c:4081
 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3376
 __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4160
 btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4537
 btrfs_ioctl_balance+0x493/0x7c0 fs/btrfs/ioctl.c:3673
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 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: 0033:0x7ff1b197dff9
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:00007ff1b2738038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff1b1b35f80 RCX: 00007ff1b197dff9
RDX: 0000000020000180 RSI: 00000000c4009420 RDI: 0000000000000007
RBP: 00007ff1b19f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff1b1b35f80 R15: 00007ffcfc80ca78
 </TASK>