BTRFS info (device loop4: state EA): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5109 at fs/btrfs/space-info.h:199 btrfs_space_info_update_bytes_may_use+0x2a4/0x610 fs/btrfs/space-info.h:199 Modules linked in: CPU: 0 PID: 5109 Comm: syz-executor.4 Not tainted 6.8.0-rc5-syzkaller-00381-g70ff1fe626a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:btrfs_space_info_update_bytes_may_use+0x2a4/0x610 fs/btrfs/space-info.h:199 Code: 00 00 74 08 4c 89 ff e8 8a c7 2d fe 49 8b 1f 48 89 df 48 8b 6c 24 20 48 89 ee e8 47 f3 ce fd 48 39 eb 73 16 e8 dd f0 ce fd 90 <0f> 0b 90 45 31 f6 43 80 7c 25 00 00 75 a6 eb ac e8 c7 f0 ce fd 43 RSP: 0018:ffffc9000424fa00 EFLAGS: 00010293 RAX: ffffffff83c47b73 RBX: 000000000015f000 RCX: ffff888029fd9dc0 RDX: 0000000000000000 RSI: 0000000000160000 RDI: 000000000015f000 RBP: 0000000000160000 R08: ffffffff83c47b69 R09: 1ffffffff1f08795 R10: dffffc0000000000 R11: fffffbfff1f08796 R12: dffffc0000000000 R13: 1ffff1101020ff0c R14: ffffffffffea0000 R15: ffff88808107f860 FS: 000055555611c480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff6612d66e4 CR3: 0000000020430000 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:231 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:154 [inline] btrfs_block_rsv_release+0x4ff/0x600 fs/btrfs/block-rsv.c:295 btrfs_release_global_block_rsv+0x33/0x270 fs/btrfs/block-rsv.c:451 btrfs_free_block_groups+0xc39/0x1070 fs/btrfs/block-group.c:4414 close_ctree+0x75a/0xd40 fs/btrfs/disk-io.c:4384 generic_shutdown_super+0x136/0x2d0 fs/super.c:641 kill_anon_super+0x3b/0x70 fs/super.c:1225 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2093 deactivate_locked_super+0xc4/0x130 fs/super.c:472 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267 task_work_run+0x24e/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:108 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0x167/0x360 kernel/entry/common.c:212 do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f3df387f0d7 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:00007ffd38df5c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3df387f0d7 RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffd38df5d10 RBP: 00007ffd38df5d10 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd38df6dd0 R13: 00007f3df38c93b9 R14: 00000000001266c5 R15: 0000000000000008