BTRFS info (device loop4 state EA): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d ------------[ cut here ]------------ 1 WARNING: fs/btrfs/space-info.h:282 at btrfs_space_info_update_bytes_may_use+0x318/0x650 fs/btrfs/space-info.h:282, CPU#1: syz-executor/5606 Modules linked in: CPU: 1 UID: 0 PID: 5606 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:btrfs_space_info_update_bytes_may_use+0x318/0x650 fs/btrfs/space-info.h:282 Code: 00 00 74 08 4c 89 ff e8 16 dc f7 fd 4d 8b 27 4c 89 e7 48 8b 6c 24 18 48 89 ee e8 53 07 86 fd 49 39 ec 73 1c e8 79 04 86 fd 90 <0f> 0b 90 31 db 43 80 7c 35 00 00 0f 85 48 ff ff ff e9 4b ff ff ff RSP: 0018:ffffc90003e87a18 EFLAGS: 00010293 RAX: ffffffff84427d27 RBX: fffffffffff00000 RCX: ffff888034e4ddc0 RDX: 0000000000000000 RSI: 0000000000100000 RDI: 00000000000ff000 RBP: 0000000000100000 R08: ffffffff9079b1bf R09: 1ffffffff20f3637 R10: dffffc0000000000 R11: fffffbfff20f3638 R12: 00000000000ff000 R13: 1ffff1100b17c510 R14: dffffc0000000000 R15: ffff888058be2880 FS: 000055557f03d500(0000) GS:ffff888124dbd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f273a3c817f CR3: 0000000066ed8000 CR4: 00000000003526f0 Call Trace: btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:319 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:153 [inline] btrfs_block_rsv_release+0x47b/0x590 fs/btrfs/block-rsv.c:291 btrfs_release_global_block_rsv+0x33/0x300 fs/btrfs/block-rsv.c:477 btrfs_free_block_groups+0xdc2/0x1040 fs/btrfs/block-group.c:4443 close_ctree+0x7d6/0x1210 fs/btrfs/disk-io.c:4587 generic_shutdown_super+0x13d/0x2d0 fs/super.c:751 kill_anon_super+0x3b/0x70 fs/super.c:1355 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2114 deactivate_locked_super+0xbe/0x110 fs/super.c:586 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1329 task_work_run+0x1d9/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline] do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f166b39f397 Code: a2 c7 05 5c 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffcaf878708 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007f166b39f397 RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffcaf8798b0 RBP: 00007f166b4344bb R08: 0000000000010580 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffcaf8798b0 R13: 00007f166b4344bb R14: 000055557f03d4e8 R15: 00007ffcaf87a980