Warning: Permanently added '10.128.1.26' (ED25519) to the list of known hosts. executing program syzkaller login: [ 41.869012][ T4019] loop0: detected capacity change from 0 to 32768 [ 41.944062][ T4019] BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 scanned by syz-executor167 (4019) [ 41.988331][ T4019] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 41.990733][ T4019] BTRFS info (device loop0): using free space tree [ 41.992472][ T4019] BTRFS info (device loop0): has skinny extents [ 42.009101][ T4019] BTRFS info (device loop0): enabling ssd optimizations [ 42.025576][ T4019] BTRFS info (device loop0): balance: start -s [ 42.028914][ T4019] ------------[ cut here ]------------ [ 42.030775][ T4019] WARNING: CPU: 1 PID: 4019 at fs/btrfs/block-group.c:2437 btrfs_create_pending_block_groups+0x9e8/0xca8 [ 42.033901][ T4019] Modules linked in: [ 42.034934][ T4019] CPU: 1 PID: 4019 Comm: syz-executor167 Not tainted 5.15.181-syzkaller #0 [ 42.037217][ T4019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 42.039944][ T4019] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 42.042067][ T4019] pc : btrfs_create_pending_block_groups+0x9e8/0xca8 [ 42.043860][ T4019] lr : btrfs_create_pending_block_groups+0x9e8/0xca8 [ 42.045682][ T4019] sp : ffff80001b7e7540 [ 42.046823][ T4019] x29: ffff80001b7e7710 x28: ffff0000cb5d5058 x27: ffff0000de38d110 [ 42.049034][ T4019] x26: ffff0000de38d108 x25: ffff0000cb5d5050 x24: dfff800000000000 [ 42.051180][ T4019] x23: ffff0000cb5d51b0 x22: 1fffe000196baa0b x21: 1fffe000196baa0a [ 42.053355][ T4019] x20: 00000000ffffffe4 x19: ffff0000d5b399d0 x18: 0000000000000001 [ 42.055568][ T4019] x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff [ 42.057825][ T4019] x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 [ 42.060070][ T4019] x11: 0000000000000000 x10: 0000000000000000 x9 : 7427dd27b2e99f00 [ 42.062251][ T4019] x8 : 7427dd27b2e99f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.064466][ T4019] x5 : ffff80001b7e6e38 x4 : ffff80001422f280 x3 : ffff800008503848 [ 42.066634][ T4019] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.068804][ T4019] Call trace: [ 42.069658][ T4019] btrfs_create_pending_block_groups+0x9e8/0xca8 [ 42.071369][ T4019] __btrfs_end_transaction+0x13c/0x608 [ 42.073025][ T4019] btrfs_end_transaction+0x24/0x34 [ 42.074405][ T4019] btrfs_inc_block_group_ro+0x4ec/0x558 [ 42.075933][ T4019] btrfs_relocate_block_group+0x2b8/0x8a4 [ 42.077479][ T4019] btrfs_relocate_chunk+0xb8/0x280 [ 42.078896][ T4019] __btrfs_balance+0x1170/0x1ba4 [ 42.080252][ T4019] btrfs_balance+0xac4/0x1138 [ 42.081589][ T4019] btrfs_ioctl_balance+0x4cc/0x658 [ 42.083003][ T4019] btrfs_ioctl+0x8d0/0xb38 [ 42.084232][ T4019] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.085598][ T4019] invoke_syscall+0x98/0x2b8 [ 42.086886][ T4019] el0_svc_common+0x138/0x258 [ 42.088182][ T4019] do_el0_svc+0x58/0x14c [ 42.089345][ T4019] el0_svc+0x78/0x1e0 [ 42.090444][ T4019] el0t_64_sync_handler+0xcc/0xe4 [ 42.091837][ T4019] el0t_64_sync+0x1a0/0x1a4 [ 42.093063][ T4019] irq event stamp: 86356 [ 42.094242][ T4019] hardirqs last enabled at (86355): [] __up_console_sem+0xb4/0x100 [ 42.096905][ T4019] hardirqs last disabled at (86356): [] el1_dbg+0x24/0x80 [ 42.099255][ T4019] softirqs last enabled at (86080): [] local_bh_enable+0x10/0x34 [ 42.101829][ T4019] softirqs last disabled at (86078): [] local_bh_disable+0x10/0x34 [ 42.104427][ T4019] ---[ end trace 53f63be3038a5a2c ]--- [ 42.106093][ T4019] BTRFS: error (device loop0) in btrfs_create_pending_block_groups:2437: errno=-28 No space left [ 42.108892][ T4019] BTRFS info (device loop0): forced readonly [ 42.110681][ T4019] BTRFS: error (device loop0) in btrfs_create_pending_block_groups:2448: errno=-28 No space left [ 42.113778][ T4019] BTRFS: error (device loop0) in add_block_group_free_space:1315: errno=-28 No space left [ 42.117507][ T4019] BTRFS info (device loop0): balance: ended with status: -30