BTRFS info (device loop5): delayed_block_rsv: size 0 reserved 0
BTRFS info (device loop5): delayed_refs_rsv: size 0 reserved 0
BTRFS info (device loop5): relocating block group 1048576 flags system
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8607 at fs/btrfs/relocation.c:4035 btrfs_relocate_block_group+0xa68/0xacc fs/btrfs/relocation.c:4035
Modules linked in:
CPU: 0 UID: 0 PID: 8607 Comm: syz.5.300 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : btrfs_relocate_block_group+0xa68/0xacc fs/btrfs/relocation.c:4035
lr : btrfs_relocate_block_group+0xa68/0xacc fs/btrfs/relocation.c:4035
sp : ffff8000a2797820
x29: ffff8000a2797880 x28: dfff800000000000 x27: 1fffe0001e5bf800
x26: 0000000000000000 x25: 0000000000000000 x24: 00000000003fe000
x23: ffff0000f2dfc5a0 x22: ffff0000f2dfc5e8 x21: ffff0000f2dfc000
x20: ffff0000cd018000 x19: ffff0000f3860000 x18: 1fffe00033795288
x17: ffff80008f7de000 x16: ffff80008b01d7f0 x15: 0000000000000001
x14: 0000000000000002 x13: 000000000000000f x12: 0000000000ff0100
x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a5139000
x8 : 0000000000080000 x7 : ffff800080231200 x6 : ffff8000802313fc
x5 : ffff000101caa4a8 x4 : ffff8000a2797418 x3 : ffff80008b02d6f8
x2 : 0000000000000001 x1 : 00000000003fe000 x0 : 0000000000000000
Call trace:
 btrfs_relocate_block_group+0xa68/0xacc fs/btrfs/relocation.c:4035 (P)
 btrfs_relocate_chunk+0x108/0x54c fs/btrfs/volumes.c:3451
 __btrfs_balance+0x1358/0x1d30 fs/btrfs/volumes.c:4227
 btrfs_balance+0x8cc/0xf58 fs/btrfs/volumes.c:4604
 btrfs_ioctl_balance+0x350/0x550 fs/btrfs/ioctl.c:3577
 btrfs_ioctl+0xb04/0xc3c fs/btrfs/ioctl.c:5298
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 54128
hardirqs last  enabled at (54127): [<ffff800080c71990>] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234
hardirqs last disabled at (54128): [<ffff80008b016974>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434
softirqs last  enabled at (54056): [<ffff800080201608>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (54054): [<ffff8000802015d4>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
BTRFS info (device loop5): balance: ended with status: 0