------------[ cut here ]------------ WARNING: CPU: 1 PID: 4917 at fs/btrfs/volumes.c:3227 btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3227 Modules linked in: CPU: 1 PID: 4917 Comm: syz.3.91 Not tainted 6.1.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3227 lr : btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3227 sp : ffff800021b975e0 x29: ffff800021b97760 x28: 0000000000100000 x27: ffff0000df706d70 x26: dfff800000000000 x25: ffffffffffffffe4 x24: ffff0000eeb4d270 x23: ffff700004372ed4 x22: 1fffe0001985b8c0 x21: ffff0000cc2dc600 x20: 0000000000000006 x19: 0000000000000000 x18: ffff800021b969e0 x17: 0000000000000000 x16: ffff80001229a1fc x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000040000 x11: 000000000003ffff x10: ffff800024c7a000 x9 : 0d0e5a2d7f1d5400 x8 : 0d0e5a2d7f1d5400 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021b96ed8 x4 : ffff800015ab3880 x3 : ffff80000858b24c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3227 btrfs_delete_unused_bgs+0x9c0/0xd00 fs/btrfs/block-group.c:1528 btrfs_remount+0xb84/0x121c fs/btrfs/super.c:2076 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:655 reconfigure_super+0x318/0x7a4 fs/super.c:977 do_remount fs/namespace.c:2712 [inline] path_mount+0xc70/0xe5c fs/namespace.c:3378 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 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: 2198 hardirqs last enabled at (2197): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (2198): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1730): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (1730): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:599 softirqs last disabled at (1719): [] __do_softirq+0x14/0x20 kernel/softirq.c:605 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop3: state MA): dumping space info: BTRFS info (device loop3: state MA): space_info DATA+METADATA has 1781760 free, is not full BTRFS info (device loop3: state MA): space_info total=3276800, used=53248, pinned=0, reserved=4096, may_use=1437696, readonly=0 zone_unusable=0 BTRFS info (device loop3: state MA): space_info SYSTEM has 8253440 free, is not full BTRFS info (device loop3: state MA): space_info total=12451840, used=4096, pinned=0, reserved=0, may_use=0, readonly=4194304 zone_unusable=0 BTRFS info (device loop3: state MA): global_block_rsv: size 1441792 reserved 1175552 BTRFS info (device loop3: state MA): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop3: state MA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop3: state MA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop3: state MA): delayed_refs_rsv: size 262144 reserved 0 BTRFS: error (device loop3: state MA) in btrfs_remove_chunk:3227: errno=-28 No space left