BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop3): balance: start -s
BTRFS info (device loop3): relocating block group 1048576 flags system
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9309 at fs/btrfs/volumes.c:3259 btrfs_remove_chunk+0x1130/0x16b4 fs/btrfs/volumes.c:3259
Modules linked in:
CPU: 0 PID: 9309 Comm: syz-executor.3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_remove_chunk+0x1130/0x16b4 fs/btrfs/volumes.c:3259
lr : btrfs_remove_chunk+0x1130/0x16b4 fs/btrfs/volumes.c:3259
sp : ffff800023157720
x29: ffff800023157880 x28: ffff0000dea3ab00 x27: ffff8000231577c0
x26: dfff800000000000 x25: ffffffffffffffe4 x24: 1fffe0001bd47569
x23: ffff0000dea3ab4c x22: ffff0000e4876158 x21: 0000000000100000
x20: 00000000ffffffe4 x19: ffff0000dea3ab58 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111cbe1c x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 7d0445495ca5dd00
x8 : 7d0445495ca5dd00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800023157018 x4 : ffff80001425f420 x3 : ffff800008504400
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_remove_chunk+0x1130/0x16b4 fs/btrfs/volumes.c:3259
 btrfs_relocate_chunk+0x1d0/0x280 fs/btrfs/volumes.c:3376
 __btrfs_balance+0x1170/0x1ba4 fs/btrfs/volumes.c:4079
 btrfs_balance+0xac4/0x1138 fs/btrfs/volumes.c:4469
 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: 85182
hardirqs last  enabled at (85181): [<ffff8000082f8fd0>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (85182): [<ffff8000111c767c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (85170): [<ffff80000819e9f4>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (85170): [<ffff80000819e9f4>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (85087): [<ffff80000819eff8>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (85087): [<ffff80000819eff8>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (85087): [<ffff80000819eff8>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (85087): [<ffff80000819eff8>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace 5d8a57a6fdc51e32 ]---
BTRFS: error (device loop3) in btrfs_remove_chunk:3259: errno=-28 No space left
BTRFS info (device loop3): forced readonly
BTRFS info (device loop3): 1 enospc errors during balance
BTRFS info (device loop3): balance: ended with status: -28