BTRFS warning (device loop0: state EA): qgroup 0/5 has unreleased space, type 1 rsv 12288 BTRFS error (device loop0: state EA): qgroup reserved space leaked ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5380 at fs/btrfs/space-info.h:198 btrfs_space_info_update_bytes_may_use+0x29f/0x600 Modules linked in: CPU: 0 PID: 5380 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:btrfs_space_info_update_bytes_may_use+0x29f/0x600 fs/btrfs/space-info.h:198 Code: 25 00 00 74 08 4c 89 ff e8 de 69 35 fe 49 8b 1f 48 89 df 48 8b 6c 24 20 48 89 ee e8 6b 81 db fd 48 39 eb 73 14 e8 51 7f db fd <0f> 0b 45 31 f6 43 80 7c 25 00 00 75 ac eb b2 e8 3d 7f db fd 43 80 RSP: 0000:ffffc90004f0f9e8 EFLAGS: 00010293 RAX: ffffffff83b2243f RBX: 000000000015f000 RCX: ffff8880246c8000 RDX: 0000000000000000 RSI: 0000000000160000 RDI: 000000000015f000 RBP: 0000000000160000 R08: ffffffff83b22435 R09: 1ffffffff1d34cc5 R10: dffffc0000000000 R11: fffffbfff1d34cc6 R12: dffffc0000000000 R13: 1ffff11004254a0c R14: ffffffffffea0000 R15: ffff8880212a5060 FS: 0000555556c7a480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f730eb9d000 CR3: 0000000071826000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:230 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:154 [inline] btrfs_block_rsv_release+0x47b/0x560 fs/btrfs/block-rsv.c:293 btrfs_release_global_block_rsv+0x33/0x260 fs/btrfs/block-rsv.c:443 btrfs_free_block_groups+0xc39/0x1060 fs/btrfs/block-group.c:4372 close_ctree+0x75a/0xd40 fs/btrfs/disk-io.c:4411 generic_shutdown_super+0x13a/0x2c0 fs/super.c:693 kill_anon_super+0x3b/0x70 fs/super.c:1292 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2144 deactivate_locked_super+0xa4/0x110 fs/super.c:481 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7feaec47db87 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff19ac5568 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007feaec47db87 RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff19ac5620 RBP: 00007fff19ac5620 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff19ac66e0 R13: 00007feaec4d7aa2 R14: 00000000000126c9 R15: 0000000000000005