BTRFS info (device loop2): relocating block group 6881280 flags data|metadata ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 1 PID: 6694 at fs/btrfs/volumes.c:3352 btrfs_remove_chunk+0x1508/0x1a0c fs/btrfs/volumes.c:3352 Modules linked in: CPU: 1 UID: 0 PID: 6694 Comm: syz.2.12 Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT 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_remove_chunk+0x1508/0x1a0c fs/btrfs/volumes.c:3352 lr : btrfs_remove_chunk+0x1508/0x1a0c fs/btrfs/volumes.c:3352 sp : ffff8000a4ef7700 x29: ffff8000a4ef7880 x28: ffff0000fa218000 x27: dfff800000000000 x26: ffff0000dcdb6250 x25: dfff800000000000 x24: ffffffffffffffe4 x23: ffff0000da264038 x22: 00000000ffffffe4 x21: ffff0000dcdb62ac x20: dfff800000000000 x19: 0000000000000000 x18: 1fffe000337d8876 x17: ffff80008f66e000 x16: ffff80008aefc458 x15: 0000000000000001 x14: 1fffe000337db2f0 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 0000000000000003 x9 : e71312f9245d8d00 x8 : e71312f9245d8d00 x7 : ffff800080488a2c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000006 x1 : ffff80008b538ee0 x0 : 0000000000000001 Call trace: btrfs_remove_chunk+0x1508/0x1a0c fs/btrfs/volumes.c:3352 (P) btrfs_relocate_chunk+0x254/0x378 fs/btrfs/volumes.c:3482 __btrfs_balance+0x1308/0x1a94 fs/btrfs/volumes.c:4212 btrfs_balance+0xa44/0xe58 fs/btrfs/volumes.c:4589 btrfs_ioctl_balance+0x350/0x550 fs/btrfs/ioctl.c:3583 btrfs_ioctl+0xb04/0xc3c fs/btrfs/ioctl.c:5303 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:893 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 54682 hardirqs last enabled at (54681): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1544 [inline] hardirqs last enabled at (54681): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5149 hardirqs last disabled at (54682): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (54326): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (54324): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop2 state A): dumping space info: BTRFS info (device loop2 state A): space_info DATA+METADATA (sub-group id 0) has 7340032 free, is not full BTRFS info (device loop2 state A): space_info total=11534336, used=61440, pinned=0, reserved=8192, may_use=2486272, readonly=1638400 zone_unusable=0 BTRFS info (device loop2 state A): space_info SYSTEM (sub-group id 0) has 0 free, is not full BTRFS info (device loop2 state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=0, readonly=4190208 zone_unusable=0 BTRFS info (device loop2 state A): global_block_rsv: size 1441792 reserved 1437696 BTRFS info (device loop2 state A): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop2 state A): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop2 state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop2 state A): delayed_refs_rsv: size 524288 reserved 524288 BTRFS: error (device loop2 state A) in btrfs_remove_chunk:3352: errno=-28 No space left BTRFS info (device loop2 state EA): forced readonly BTRFS info (device loop2 state EA): 1 enospc errors during balance BTRFS info (device loop2 state EA): balance: ended with status: -30