BTRFS info (device loop0): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d
BTRFS info (device loop0): at unmount dio bytes count 40960
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WARNING: fs/btrfs/block-group.c:172 at btrfs_put_block_group+0x305/0x360 fs/btrfs/block-group.c:172, CPU#1: syz-executor/12437
Modules linked in:
CPU: 1 UID: 0 PID: 12437 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:btrfs_put_block_group+0x305/0x360 fs/btrfs/block-group.c:172
Code: 42 80 3c 20 00 74 08 48 89 df e8 06 73 30 fe bf 10 1f 00 00 48 03 3b 48 89 de e8 36 aa 01 00 e9 c0 fe ff ff e8 bc 60 cd fd 90 <0f> 0b 90 e9 84 fe ff ff e8 ae 60 cd fd e9 7a fe ff ff e8 a4 60 cd
RSP: 0018:ffffc90004157a98 EFLAGS: 00010293
RAX: ffffffff83f3fbd4 RBX: ffff88805f111000 RCX: ffff88801c3f3c80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100f334470 R12: dffffc0000000000
R13: ffff88805f11133c R14: 000000000000a000 R15: dffffc0000000000
FS:  0000555563846500(0000) GS:ffff8881269d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f369286da08 CR3: 0000000026be2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xbf1/0xfd0 fs/btrfs/block-group.c:4573
 close_ctree+0x7b4/0x13a0 fs/btrfs/disk-io.c:4411
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_anon_super+0x3b/0x70 fs/super.c:1289
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1318
 task_work_run+0x1d9/0x270 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:44 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e83d9bf17
Code: a2 c7 05 7c 96 24 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:00007ffdf8895df8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f3e83e0471f RCX: 00007f3e83d9bf17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdf8895eb0
RBP: 00007ffdf8895eb0 R08: 00007ffdf8896eb0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdf8896f40
R13: 00007f3e83e0471f R14: 00000000001040cc R15: 00007ffdf8896f80
 </TASK>