------------[ cut here ]------------ WARNING: CPU: 1 PID: 6532 at fs/btrfs/volumes.c:3259 btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 Modules linked in: CPU: 1 PID: 6532 Comm: syz.2.372 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 lr : btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 sp : ffff800021a175e0 x29: ffff800021a17760 x28: ffff0000e12b6784 x27: ffff0000e12b6788 x26: dfff800000000000 x25: ffffffffffffffe4 x24: ffff0000e314f4e0 x23: ffff700004342ed4 x22: 1fffe0001a104e40 x21: ffff0000d0827200 x20: 0000000000000006 x19: 0000000000000000 x18: ffff800021a16f00 x17: ffff800018c47000 x16: ffff80000830270c x15: ffff800008ad06c0 x14: ffff800008acdad4 x13: ffff80000805c464 x12: 0000000000080000 x11: 000000000007ffff x10: 0000000000000003 x9 : 70013e9bb73f3a00 x8 : 70013e9bb73f3a00 x7 : ffff80000805c254 x6 : ffff80000805c464 x5 : ffff0000e82ecf78 x4 : ffff800021a16fe0 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80001247d5c0 x0 : ffff80019e2a1000 Call trace: btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 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+0x498/0x588 fs/namespace.c:3584 __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: 78782 hardirqs last enabled at (78781): [] call_rcu+0x614/0xa40 kernel/rcu/tree.c:2880 hardirqs last disabled at (78782): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (78204): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (78202): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop2: state MA): dumping space info: BTRFS info (device loop2: state MA): space_info DATA+METADATA has 1519616 free, is not full BTRFS info (device loop2: state MA): space_info total=3276800, used=53248, pinned=0, reserved=4096, may_use=1699840, readonly=0 zone_unusable=0 BTRFS info (device loop2: state MA): space_info SYSTEM has 8155136 free, is not full BTRFS info (device loop2: state MA): space_info total=12451840, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4194304 zone_unusable=0 BTRFS info (device loop2: state MA): global_block_rsv: size 1441792 reserved 1437696 BTRFS info (device loop2: state MA): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop2: state MA): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop2: state MA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state MA): delayed_refs_rsv: size 262144 reserved 0 BTRFS: error (device loop2: state MA) in btrfs_remove_chunk:3259: errno=-28 No space left