------------[ cut here ]------------
WARNING: CPU: 0 PID: 6697 at fs/btrfs/volumes.c:3253 btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253
Modules linked in:
CPU: 0 PID: 6697 Comm: syz.0.420 Not tainted 5.15.180-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 : btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253
lr : btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253
sp : ffff8000205c7640
x29: ffff8000205c77c0 x28: ffff0000dbebf7e8 x27: ffff0000dbebf790
x26: ffffffffffffffe4 x25: dfff800000000000 x24: ffff0000c7898680
x23: ffff7000040b8ee0 x22: 1fffe00019aadda0 x21: ffff0000cd56ed00
x20: ffff0000dbebf7dc x19: 00000000ffffffe4 x18: ffff8000205c6f20
x17: 0000000000000002 x16: ffff800011b54788 x15: 000000000003b48b
x14: ffff8000172044c0 x13: dfff800000000000 x12: 0000000000080000
x11: 000000000006def2 x10: ffff80002152d000 x9 : 8fc774105c9e8300
x8 : 8fc774105c9e8300 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff8000085597fc
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253
 btrfs_delete_unused_bgs+0x828/0xd28 fs/btrfs/block-group.c:1432
 btrfs_remount+0xc60/0x130c fs/btrfs/super.c:2001
 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:634
 reconfigure_super+0x1d0/0x6ec fs/super.c:938
 do_remount fs/namespace.c:2668 [inline]
 path_mount+0xbec/0x101c fs/namespace.c:3334
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount fs/namespace.c:3540 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3540
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 1664
hardirqs last  enabled at (1663): [<ffff80000832ca7c>] console_trylock_spinning+0x180/0x288 kernel/printk/printk.c:1891
hardirqs last disabled at (1664): [<ffff800011b4fe3c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (1468): [<ffff8000081b90b8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (1468): [<ffff8000081b90b8>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (1345): [<ffff8000081b9750>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (1345): [<ffff8000081b9750>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (1345): [<ffff8000081b9750>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (1345): [<ffff8000081b9750>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace d0a0dfb7b1fde858 ]---
BTRFS: error (device loop0) in btrfs_remove_chunk:3253: errno=-28 No space left