BTRFS info (device loop6): balance: start -s ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 15157 at fs/btrfs/block-group.c:2781 btrfs_create_pending_block_groups+0xe34/0x10f4 fs/btrfs/block-group.c:2781 Modules linked in: CPU: 0 UID: 0 PID: 15157 Comm: syz.6.2917 Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #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_create_pending_block_groups+0xe34/0x10f4 fs/btrfs/block-group.c:2781 lr : btrfs_create_pending_block_groups+0xe34/0x10f4 fs/btrfs/block-group.c:2781 sp : ffff80009fc474e0 x29: ffff80009fc47710 x28: dfff800000000000 x27: ffff0000caaba630 x26: ffff0000caaba628 x25: ffff0000c7b6e1c0 x24: ffff0000c7b6e058 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff0000c7b6e050 x19: 00000000ffffffe4 x18: 1fffe000337dc876 x17: ffff80010c964000 x16: ffff80008aecb65c x15: 0000000000000001 x14: 1fffe000337df620 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 0000000000000003 x9 : cce3efe7f6997300 x8 : cce3efe7f6997300 x7 : ffff800080487a94 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000007 x1 : ffff80008b5087a0 x0 : 0000000000000001 Call trace: btrfs_create_pending_block_groups+0xe34/0x10f4 fs/btrfs/block-group.c:2781 (P) __btrfs_end_transaction+0x134/0x5f4 fs/btrfs/transaction.c:1071 btrfs_end_transaction+0x24/0x34 fs/btrfs/transaction.c:1110 btrfs_inc_block_group_ro+0x588/0x62c fs/btrfs/block-group.c:3077 btrfs_relocate_block_group+0x310/0x97c fs/btrfs/relocation.c:3962 btrfs_relocate_chunk+0x104/0x378 fs/btrfs/volumes.c:3431 __btrfs_balance+0x1308/0x1a94 fs/btrfs/volumes.c:4206 btrfs_balance+0xa44/0xe58 fs/btrfs/volumes.c:4583 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+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 88418 hardirqs last enabled at (88417): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1544 [inline] hardirqs last enabled at (88417): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5144 hardirqs last disabled at (88418): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (88136): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (88136): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (88117): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop6 state EA): dumping space info: BTRFS info (device loop6 state EA): space_info DATA+METADATA (sub-group id 0) has 2174976 free, is full BTRFS info (device loop6 state EA): space_info total=3276800, used=49152, pinned=0, reserved=0, may_use=1052672, readonly=0 zone_unusable=0 BTRFS info (device loop6 state EA): space_info SYSTEM (sub-group id 0) has 8253440 free, is not full BTRFS info (device loop6 state EA): space_info total=12451840, used=4096, pinned=0, reserved=4096, may_use=0, readonly=4190208 zone_unusable=0 BTRFS info (device loop6 state EA): global_block_rsv: size 983040 reserved 983040 BTRFS info (device loop6 state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop6 state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop6 state EA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop6 state EA): delayed_refs_rsv: size 131072 reserved 69632 BTRFS: error (device loop6 state EA) in btrfs_create_pending_block_groups:2781: errno=-28 No space left BTRFS: error (device loop6 state EA) in btrfs_create_pending_block_groups:2793: errno=-28 No space left BTRFS info (device loop6 state EA): balance: ended with status: -30