------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 6585 at fs/btrfs/extent-tree.c:3205 __btrfs_free_extent+0x2438/0x3264 fs/btrfs/extent-tree.c:3205 Modules linked in: CPU: 0 UID: 0 PID: 6585 Comm: syz.4.5 Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #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_free_extent+0x2438/0x3264 fs/btrfs/extent-tree.c:3205 lr : __btrfs_free_extent+0x2438/0x3264 fs/btrfs/extent-tree.c:3205 sp : ffff8000a4626cc0 x29: ffff8000a4626e80 x28: 0000000000000000 x27: ffff7000148c4db4 x26: ffff0000f15c4e40 x25: ffff7000148c4db4 x24: 00000000ffffffe4 x23: dfff800000000000 x22: 00000000ffffffe4 x21: ffff0000c6885b00 x20: 0000000000000000 x19: 0000000000000000 x18: 1fffe000366ddeb6 x17: ffff80008ff2e000 x16: ffff80008333712c x15: 0000000000000001 x14: 1fffe00018a78660 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 0000000000000003 x9 : 1e4f2cb6024ff900 x8 : 1e4f2cb6024ff900 x7 : ffff8000803e3214 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff8000803d4fe4 x2 : 0000000000000001 x1 : ffff80008bfc68c0 x0 : 0000000000000001 Call trace: __btrfs_free_extent+0x2438/0x3264 fs/btrfs/extent-tree.c:3205 (P) run_delayed_tree_ref fs/btrfs/extent-tree.c:1747 [inline] run_one_delayed_ref fs/btrfs/extent-tree.c:1773 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1970 [inline] __btrfs_run_delayed_refs+0xb28/0x3778 fs/btrfs/extent-tree.c:2040 btrfs_run_delayed_refs+0xc4/0x2e8 fs/btrfs/extent-tree.c:2152 btrfs_commit_transaction+0x21c/0x2afc fs/btrfs/transaction.c:2209 relocate_block_group+0xa74/0xb98 fs/btrfs/relocation.c:3690 btrfs_relocate_block_group+0x56c/0x984 fs/btrfs/relocation.c:4011 btrfs_relocate_chunk+0x118/0x37c fs/btrfs/volumes.c:3511 __btrfs_balance+0x14a8/0x1d74 fs/btrfs/volumes.c:4292 btrfs_balance+0xa38/0xe50 fs/btrfs/volumes.c:4669 btrfs_ioctl_balance+0x360/0x644 fs/btrfs/ioctl.c:3586 btrfs_ioctl+0x740/0xb28 fs/btrfs/ioctl.c:5304 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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 76414 hardirqs last enabled at (76413): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1525 [inline] hardirqs last enabled at (76413): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5130 hardirqs last disabled at (76414): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (76328): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (76328): [] handle_softirqs+0xb44/0xd34 kernel/softirq.c:607 softirqs last disabled at (76207): [] __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 6856704 free, is full BTRFS info (device loop4 state A): space_info total=9895936, used=81920, pinned=0, reserved=16384, may_use=1327104, readonly=1613824 zone_unusable=0 BTRFS info (device loop4 state A): space_info SYSTEM has 5824512 free, is not full BTRFS info (device loop4 state A): space_info total=5832704, used=4096, pinned=0, reserved=4096, may_use=0, readonly=0 zone_unusable=0 BTRFS info (device loop4 state A): global_block_rsv: size 983040 reserved 983040 BTRFS info (device loop4 state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop4 state A): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop4 state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop4 state A): delayed_refs_rsv: size 1245184 reserved 114688 BTRFS: error (device loop4 state A) in __btrfs_free_extent:3205: errno=-28 No space left BTRFS info (device loop4 state EA): forced readonly BTRFS error (device loop4 state EA): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -28 BTRFS: error (device loop4 state EA) in btrfs_run_delayed_refs:2154: errno=-28 No space left BTRFS info (device loop4 state EA): balance: ended with status: -5