BTRFS info (device loop4): 0 free space entries at or bigger than 4096 bytes BTRFS info (device loop4): 4190208 bytes available across all block groups ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 7116 at fs/btrfs/volumes.c:3426 btrfs_remove_chunk+0x131c/0x1804 fs/btrfs/volumes.c:3426 Modules linked in: CPU: 0 UID: 0 PID: 7116 Comm: syz.4.109 Not tainted 6.15.0-rc4-syzkaller-ge0f4c8dd9d2d #0 PREEMPT 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_remove_chunk+0x131c/0x1804 fs/btrfs/volumes.c:3426 lr : btrfs_remove_chunk+0x131c/0x1804 fs/btrfs/volumes.c:3426 sp : ffff8000a3ab7700 x29: ffff8000a3ab7880 x28: ffff0000f0d40ac4 x27: dfff800000000000 x26: ffff0000f0d40a68 x25: dfff800000000000 x24: ffffffffffffffe4 x23: ffff0000ce878138 x22: 00000000ffffffe4 x21: ffff0000ce878100 x20: dfff800000000000 x19: 0000000000000000 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008ad0f308 x15: ffff700011e6ff40 x14: 1ffff00011e6ff40 x13: 0000000000000004 x12: ffffffffffffffff x11: 0000000000080000 x10: 000000000007ffff x9 : bd57742e7cc06500 x8 : bd57742e7cc06500 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a3ab7058 x4 : ffff80008f3f4fa0 x3 : ffff80008053fd64 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: btrfs_remove_chunk+0x131c/0x1804 fs/btrfs/volumes.c:3426 (P) btrfs_relocate_chunk+0x254/0x378 fs/btrfs/volumes.c:3556 __btrfs_balance+0x1308/0x1a94 fs/btrfs/volumes.c:4292 btrfs_balance+0xa44/0xe30 fs/btrfs/volumes.c:4669 btrfs_ioctl_balance+0x350/0x550 fs/btrfs/ioctl.c:3586 btrfs_ioctl+0xb04/0xc38 fs/btrfs/ioctl.c:5306 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:892 __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+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 67530 hardirqs last enabled at (67529): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (67529): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (67530): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (67340): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (67340): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (67331): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop4 state A): dumping space info: BTRFS info (device loop4 state A): space_info DATA+METADATA has 7340032 free, is not full BTRFS info (device loop4 state A): space_info total=11534336, used=61440, pinned=0, reserved=8192, may_use=2486272, readonly=1638400 zone_unusable=0 BTRFS info (device loop4 state A): space_info SYSTEM has -98304 free, is not full BTRFS info (device loop4 state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4190208 zone_unusable=0 BTRFS info (device loop4 state A): global_block_rsv: size 1441792 reserved 1437696 BTRFS info (device loop4 state A): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop4 state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop4 state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop4 state A): delayed_refs_rsv: size 524288 reserved 524288 BTRFS: error (device loop4 state A) in btrfs_remove_chunk:3426: errno=-28 No space left BTRFS info (device loop4 state EA): forced readonly BTRFS info (device loop4 state EA): 1 enospc errors during balance BTRFS info (device loop4 state EA): balance: ended with status: -30