BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop1): balance: start -s
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4200 at fs/btrfs/block-group.c:2441 btrfs_create_pending_block_groups+0x9e8/0xca8 fs/btrfs/block-group.c:2441
Modules linked in:
CPU: 0 PID: 4200 Comm: syz.1.25 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_create_pending_block_groups+0x9e8/0xca8 fs/btrfs/block-group.c:2441
lr : btrfs_create_pending_block_groups+0x9e8/0xca8 fs/btrfs/block-group.c:2441
sp : ffff80001ff77540
x29: ffff80001ff77710 x28: ffff0000c8a93858 x27: ffff0000ea68e110
x26: ffff0000ea68e108 x25: ffff0000c8a93850 x24: dfff800000000000
x23: ffff0000c8a939b0 x22: 1fffe0001915270b x21: 1fffe0001915270a
x20: 00000000ffffffe4 x19: ffff0000e77659d0 x18: 0000000000000001
x17: 0000000000000002 x16: ffff8000111a97c4 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000080000
x11: 00000000000680ae x10: ffff8000210cc000 x9 : ddf2e9526b418500
x8 : ddf2e9526b418500 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001ff76e38 x4 : ffff80001423f280 x3 : ffff800008503958
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_create_pending_block_groups+0x9e8/0xca8 fs/btrfs/block-group.c:2441
 __btrfs_end_transaction+0x13c/0x608 fs/btrfs/transaction.c:1016
 btrfs_end_transaction+0x24/0x34 fs/btrfs/transaction.c:1052
 btrfs_inc_block_group_ro+0x4ec/0x558 fs/btrfs/block-group.c:2664
 btrfs_relocate_block_group+0x2b8/0x8a4 fs/btrfs/relocation.c:4041
 btrfs_relocate_chunk+0xb8/0x280 fs/btrfs/volumes.c:3332
 __btrfs_balance+0x1170/0x1ba4 fs/btrfs/volumes.c:4073
 btrfs_balance+0xac4/0x1138 fs/btrfs/volumes.c:4463
 btrfs_ioctl_balance+0x4cc/0x658 fs/btrfs/ioctl.c:4152
 btrfs_ioctl+0x8d0/0xb38 fs/btrfs/ioctl.c:5012
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 88890
hardirqs last  enabled at (88889): [<ffff8000082f7764>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (88890): [<ffff8000111a5098>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (87776): [<ffff800008031d3c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (87774): [<ffff800008031d08>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace ca9ee2ae26834465 ]---
BTRFS: error (device loop1) in btrfs_create_pending_block_groups:2441: errno=-28 No space left
BTRFS info (device loop1): forced readonly
BTRFS: error (device loop1) in btrfs_create_pending_block_groups:2452: errno=-28 No space left
BTRFS info (device loop1): balance: ended with status: -30