Warning: Permanently added '10.128.0.172' (ED25519) to the list of known hosts. executing program [ 39.779686][ T4020] loop0: detected capacity change from 0 to 32768 [ 39.897779][ T4020] BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 scanned by syz-executor415 (4020) [ 39.962534][ T4020] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 39.964999][ T4020] BTRFS info (device loop0): using free space tree [ 39.967018][ T4020] BTRFS info (device loop0): has skinny extents [ 39.984818][ T4020] BTRFS info (device loop0): enabling ssd optimizations [ 40.001227][ T4020] BTRFS info (device loop0): balance: start -s [ 40.004552][ T4020] ------------[ cut here ]------------ [ 40.006548][ T4020] WARNING: CPU: 0 PID: 4020 at fs/btrfs/block-group.c:2437 btrfs_create_pending_block_groups+0x9e8/0xca8 [ 40.009717][ T4020] Modules linked in: [ 40.010744][ T4020] CPU: 0 PID: 4020 Comm: syz-executor415 Not tainted 5.15.181-syzkaller #0 [ 40.013172][ T4020] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 40.015852][ T4020] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 40.017988][ T4020] pc : btrfs_create_pending_block_groups+0x9e8/0xca8 [ 40.019817][ T4020] lr : btrfs_create_pending_block_groups+0x9e8/0xca8 [ 40.021644][ T4020] sp : ffff80001f517540 [ 40.022834][ T4020] x29: ffff80001f517710 x28: ffff0000cb537058 x27: ffff0000de73c110 [ 40.025050][ T4020] x26: ffff0000de73c108 x25: ffff0000cb537050 x24: dfff800000000000 [ 40.027247][ T4020] x23: ffff0000cb5371b0 x22: 1fffe000196a6e0b x21: 1fffe000196a6e0a [ 40.029535][ T4020] x20: 00000000ffffffe4 x19: ffff0000d4a259d0 x18: 0000000000000001 [ 40.031799][ T4020] x17: 0000000000000000 x16: ffff8000083007d8 x15: 00000000ffffffff [ 40.034016][ T4020] x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 [ 40.036290][ T4020] x11: 0000000000000000 x10: 0000000000000000 x9 : 59dd2217ac676400 [ 40.038509][ T4020] x8 : 59dd2217ac676400 x7 : 0000000000000001 x6 : 0000000000000001 [ 40.040774][ T4020] x5 : ffff80001f516e38 x4 : ffff80001422f280 x3 : ffff8000083008e8 [ 40.043063][ T4020] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 40.045309][ T4020] Call trace: [ 40.046200][ T4020] btrfs_create_pending_block_groups+0x9e8/0xca8 [ 40.047840][ T4020] __btrfs_end_transaction+0x13c/0x608 [ 40.049312][ T4020] btrfs_end_transaction+0x24/0x34 [ 40.050717][ T4020] btrfs_inc_block_group_ro+0x4ec/0x558 [ 40.052182][ T4020] btrfs_relocate_block_group+0x2b8/0x8a4 [ 40.053759][ T4020] btrfs_relocate_chunk+0xb8/0x280 [ 40.055134][ T4020] __btrfs_balance+0x1170/0x1ba4 [ 40.056462][ T4020] btrfs_balance+0xac4/0x1138 [ 40.057754][ T4020] btrfs_ioctl_balance+0x4cc/0x658 [ 40.059223][ T4020] btrfs_ioctl+0x8d0/0xb38 [ 40.060442][ T4020] __arm64_sys_ioctl+0x14c/0x1c8 [ 40.061867][ T4020] invoke_syscall+0x98/0x2b8 [ 40.063107][ T4020] el0_svc_common+0x138/0x258 [ 40.064344][ T4020] do_el0_svc+0x58/0x14c [ 40.065524][ T4020] el0_svc+0x78/0x1e0 [ 40.066653][ T4020] el0t_64_sync_handler+0xcc/0xe4 [ 40.067990][ T4020] el0t_64_sync+0x1a0/0x1a4 [ 40.069267][ T4020] irq event stamp: 86444 [ 40.070452][ T4020] hardirqs last enabled at (86443): [] __up_console_sem+0xb4/0x100 [ 40.073054][ T4020] hardirqs last disabled at (86444): [] el1_dbg+0x24/0x80 [ 40.075421][ T4020] softirqs last enabled at (86434): [] handle_softirqs+0xa4c/0xbf0 [ 40.078084][ T4020] softirqs last disabled at (86429): [] __irq_exit_rcu+0x240/0x440 [ 40.080643][ T4020] ---[ end trace 3d7a6652a69b4f05 ]--- [ 40.082374][ T4020] BTRFS: error (device loop0) in btrfs_create_pending_block_groups:2437: errno=-28 No space left [ 40.085275][ T4020] BTRFS info (device loop0): forced readonly [ 40.087206][ T4020] BTRFS: error (device loop0) in btrfs_create_pending_block_groups:2448: errno=-28 No space left [ 40.090206][ T4020] BTRFS: error (device loop0) in add_block_group_free_space:1315: errno=-28 No space left [ 40.093149][ T4020] BTRFS info (device loop0): balance: ended with status: -30