BTRFS info (device loop0): relocating block group 1048576 flags system ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 6725 at fs/btrfs/volumes.c:3352 btrfs_remove_chunk+0x1508/0x1a0c fs/btrfs/volumes.c:3352 Modules linked in: CPU: 0 UID: 0 PID: 6725 Comm: syz.0.19 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025 pstate: 63400005 (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 : ffff8000a31c7700 x29: ffff8000a31c7880 x28: ffff0000f814c000 x27: dfff800000000000 x26: ffff0000c1743818 x25: dfff800000000000 x24: ffffffffffffffe4 x23: ffff0000c7a47838 x22: 00000000ffffffe4 x21: ffff0000c1743874 x20: dfff800000000000 x19: 0000000000000000 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008ae69508 x15: ffff700011ee0158 x14: 1ffff00011ee0158 x13: 0000000000000004 x12: ffffffffffffffff x11: 0000000000080000 x10: 000000000007ffff x9 : 55df7ffc40649900 x8 : 55df7ffc40649900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a31c7058 x4 : ffff80008f776bc0 x3 : ffff80008054bdfc x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000 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: 54974 hardirqs last enabled at (54973): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (54973): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (54974): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (54660): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (54658): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop0 state A): dumping space info: BTRFS info (device loop0 state A): space_info DATA+METADATA (sub-group id 0) has 720896 free, is not full BTRFS info (device loop0 state A): space_info total=3276800, used=61440, pinned=0, reserved=8192, may_use=2486272, readonly=0 zone_unusable=0 BTRFS info (device loop0 state A): space_info SYSTEM (sub-group id 0) has 8253440 free, is not full BTRFS info (device loop0 state A): space_info total=12451840, used=4096, pinned=0, reserved=0, may_use=0, readonly=4194304 zone_unusable=0 BTRFS info (device loop0 state A): global_block_rsv: size 1441792 reserved 1437696 BTRFS info (device loop0 state A): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop0 state A): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state A): delayed_refs_rsv: size 524288 reserved 524288 BTRFS: error (device loop0 state A) in btrfs_remove_chunk:3352: errno=-28 No space left BTRFS info (device loop0 state EA): forced readonly BTRFS info (device loop0 state EA): 1 enospc errors during balance BTRFS info (device loop0 state EA): balance: ended with status: -28