BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm BTRFS info (device loop0): using free space tree BTRFS info (device loop0): enabling ssd optimizations BTRFS info (device loop0): balance: start -s ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4291 at fs/btrfs/block-group.c:2535 btrfs_create_pending_block_groups+0xd4c/0x1000 fs/btrfs/block-group.c:2535 Modules linked in: CPU: 0 PID: 4291 Comm: syz-executor405 Not tainted 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_create_pending_block_groups+0xd4c/0x1000 fs/btrfs/block-group.c:2535 lr : btrfs_create_pending_block_groups+0xd4c/0x1000 fs/btrfs/block-group.c:2535 sp : ffff8000212f7400 x29: ffff8000212f7680 x28: ffff0000e26e30f8 x27: ffff0000d11191b8 x26: 0000000000000000 x25: 1fffe0001a22320b x24: dfff800000000000 x23: 1fffe0001a22320a x22: 0000000000000000 x21: ffff0000d1119058 x20: 00000000ffffffe4 x19: ffff0000d1119050 x18: ffff8000212f6880 x17: 0000000000000000 x16: ffff8000123287ec x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000000000 x9 : a42a23cb2c394100 x8 : a42a23cb2c394100 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000212f6cf8 x4 : ffff800015be5360 x3 : ffff800008587994 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: btrfs_create_pending_block_groups+0xd4c/0x1000 fs/btrfs/block-group.c:2535 __btrfs_end_transaction+0x254/0x75c fs/btrfs/transaction.c:1012 btrfs_end_transaction+0x24/0x34 fs/btrfs/transaction.c:1051 btrfs_inc_block_group_ro+0x594/0x624 fs/btrfs/block-group.c:2799 btrfs_relocate_block_group+0x31c/0x98c fs/btrfs/relocation.c:4046 btrfs_relocate_chunk+0x118/0x368 fs/btrfs/volumes.c:3344 __btrfs_balance+0x1468/0x1dc8 fs/btrfs/volumes.c:4092 btrfs_balance+0xa38/0xe40 fs/btrfs/volumes.c:4468 btrfs_ioctl_balance+0x3e4/0x778 fs/btrfs/ioctl.c:4531 btrfs_ioctl+0x72c/0xb08 fs/btrfs/ioctl.c:5570 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 64404 hardirqs last enabled at (64403): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (64404): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (64196): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (64196): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (64117): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop0: state A): dumping space info: BTRFS info (device loop0: state A): space_info DATA+METADATA has 1769472 free, is full BTRFS info (device loop0: state A): space_info total=3276800, used=61440, pinned=0, reserved=0, may_use=1445888, readonly=0 zone_unusable=0 BTRFS info (device loop0: state A): space_info SYSTEM has 8253440 free, is not full BTRFS info (device loop0: state A): space_info total=12451840, used=4096, pinned=0, reserved=4096, may_use=0, readonly=4190208 zone_unusable=0 BTRFS info (device loop0: state A): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop0: state A): trans_block_rsv: size 0 reserved 0 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 393216 reserved 4096 BTRFS: error (device loop0: state A) in btrfs_create_pending_block_groups:2535: errno=-28 No space left BTRFS info (device loop0: state EA): forced readonly BTRFS: error (device loop0: state EA) in btrfs_create_pending_block_groups:2547: errno=-28 No space left BTRFS: error (device loop0: state EA) in add_block_group_free_space:1390: errno=-28 No space left BTRFS info (device loop0: state EA): balance: ended with status: -30