BTRFS info (device loop2): 0 blocks of free space at or bigger than bytes is ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4665 at fs/btrfs/block-group.c:3688 do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] WARNING: CPU: 1 PID: 4665 at fs/btrfs/block-group.c:3688 btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 Modules linked in: CPU: 1 PID: 4665 Comm: syz.2.42 Not tainted 6.1.130-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 : do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] pc : btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 lr : do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] lr : btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 sp : ffff800022596f00 x29: ffff800022596f70 x28: ffff0000cd745000 x27: 1fffe0001ba37a13 x26: 1fffe0001e7856c6 x25: ffff0000f3c2b633 x24: dfff800000000000 x23: ffff0000f3c2b5e8 x22: 0000000000000000 x21: 0000000000000000 x20: ffffffffffffffe4 x19: ffff0000dd1bd000 x18: ffff800022596380 x17: 0000000000000000 x16: ffff80001232a73c x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000 x11: 0000000000055d3d x10: ffff80002661b000 x9 : 065fd7959a9c3a00 x8 : 065fd7959a9c3a00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000225967f8 x4 : ffff800015be5320 x3 : ffff800008588888 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 find_free_extent_update_loop fs/btrfs/extent-tree.c:4125 [inline] find_free_extent+0x3c70/0x48c0 fs/btrfs/extent-tree.c:4511 btrfs_reserve_extent+0x364/0x680 fs/btrfs/extent-tree.c:4604 __btrfs_prealloc_file_range+0x2b8/0x1064 fs/btrfs/inode.c:10079 btrfs_prealloc_file_range+0x60/0x7c fs/btrfs/inode.c:10173 btrfs_zero_range+0xb60/0xf84 fs/btrfs/file.c:3028 btrfs_fallocate+0xa48/0x19b4 fs/btrfs/file.c:3138 vfs_fallocate+0x478/0x5b4 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __arm64_sys_fallocate+0xc0/0x110 fs/open.c:352 __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: 782 hardirqs last enabled at (781): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (782): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (706): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (706): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (615): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop2: state A): dumping space info: BTRFS info (device loop2: state A): space_info DATA+METADATA has 5668864 free, is not full BTRFS info (device loop2: state A): space_info total=7405568, used=61440, pinned=0, reserved=0, may_use=1675264, readonly=0 zone_unusable=0 BTRFS info (device loop2: state A): space_info SYSTEM has -98304 free, is not full BTRFS info (device loop2: state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4190208 zone_unusable=0 BTRFS info (device loop2: state A): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop2: state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop2: state A): delayed_block_rsv: size 32768 reserved 32768 BTRFS info (device loop2: state A): delayed_refs_rsv: size 131072 reserved 0 BTRFS: error (device loop2: state A) in do_chunk_alloc:3688: errno=-28 No space left BTRFS info (device loop2: state EA): forced readonly BTRFS error (device loop2: state EA): allocation failed flags 2, wanted 4096 tree-log 0, relocation: 0 BTRFS info (device loop2: state EA): space_info SYSTEM has 4186112 free, is not full BTRFS info (device loop2: state EA): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=4096, readonly=0 zone_unusable=0 BTRFS info (device loop2: state EA): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop2: state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state EA): delayed_block_rsv: size 32768 reserved 32768 BTRFS info (device loop2: state EA): delayed_refs_rsv: size 393216 reserved 0 BTRFS info (device loop2: state EA): block group 1048576 has 4194304 bytes, 4096 used 0 pinned 0 reserved 0 zone_unusable BTRFS critical (device loop2: state EA): entry offset 1048576, bytes 4096, bitmap no BTRFS critical (device loop2: state EA): entry offset 1056768, bytes 4186112, bitmap no BTRFS info (device loop2: state EA): block group has cluster?: no BTRFS info (device loop2: state EA): 2 blocks of free space at or bigger than bytes is BTRFS: error (device loop2: state EA) in btrfs_create_pending_block_groups:2542: errno=-28 No space left BTRFS error (device loop2: state EA): allocation failed flags 33, wanted 32768 tree-log 0, relocation: 0 BTRFS info (device loop2: state EA): space_info DATA+METADATA has 5705728 free, is full BTRFS info (device loop2: state EA): space_info total=7405568, used=61440, pinned=0, reserved=0, may_use=1638400, readonly=0 zone_unusable=0 BTRFS info (device loop2: state EA): global_block_rsv: size 1441792 reserved 1437696 BTRFS info (device loop2: state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state EA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state EA): delayed_refs_rsv: size 0 reserved 0 BTRFS info (device loop2: state EA): block group 5242880 has 1638400 bytes, 49152 used 0 pinned 0 reserved 0 zone_unusable BTRFS critical (device loop2: state EA): entry offset 5242880, bytes 12288, bitmap no BTRFS critical (device loop2: state EA): entry offset 5259264, bytes 8192, bitmap no BTRFS critical (device loop2: state EA): entry offset 5271552, bytes 16384, bitmap no BTRFS critical (device loop2: state EA): entry offset 5316608, bytes 28672, bitmap no BTRFS critical (device loop2: state EA): entry offset 5357568, bytes 1523712, bitmap no BTRFS info (device loop2: state EA): block group has cluster?: no BTRFS info (device loop2: state EA): 1 blocks of free space at or bigger than bytes is BTRFS info (device loop2: state EA): block group 6881280 has 1638400 bytes, 12288 used 0 pinned 0 reserved 0 zone_unusable BTRFS critical (device loop2: state EA): entry offset 6893568, bytes 1626112, bitmap no BTRFS info (device loop2: state EA): block group has cluster?: no BTRFS info (device loop2: state EA): 1 blocks of free space at or bigger than bytes is BTRFS info (device loop2: state EA): block group 8519680 has 4128768 bytes, 0 used 0 pinned 0 reserved 0 zone_unusable BTRFS critical (device loop2: state EA): entry offset 8531968, bytes 4116480, bitmap no BTRFS info (device loop2: state EA): block group has cluster?: no BTRFS info (device loop2: state EA): 1 blocks of free space at or bigger than bytes is