BTRFS info (device loop3): at unmount dio bytes count 45056
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WARNING: CPU: 1 PID: 1927 at fs/btrfs/block-group.c:159 btrfs_put_block_group fs/btrfs/block-group.c:167 [inline]
WARNING: CPU: 1 PID: 1927 at fs/btrfs/block-group.c:159 btrfs_put_block_group+0xa7/0xb0 fs/btrfs/block-group.c:146
Modules linked in:
CPU: 1 PID: 1927 Comm: syz-executor.3 Not tainted 6.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:btrfs_put_block_group fs/btrfs/block-group.c:159 [inline]
RIP: 0010:btrfs_put_block_group+0xa7/0xb0 fs/btrfs/block-group.c:146
Code: eb a8 5b 48 81 c7 a8 01 00 00 be 03 00 00 00 e9 2f ef 18 00 0f 0b 48 8b 03 48 89 de 48 8d b8 d8 15 00 00 e8 4b 72 00 00 eb a3 <0f> 0b eb 8c 0f 1f 44 00 00 41 55 41 54 49 89 fc 55 53 48 83 ec 08
RSP: 0018:ffffc90001cc7da8 EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff8881093f5400 RCX: ffff8881093f55c0
RDX: 0000000000000001 RSI: ffffffff82f7fcce RDI: ffff8881093f5400
RBP: ffff8881093f5400 R08: 0000000000000000 R09: 0000607dc8014390
R10: ffffc90001cc7d68 R11: 0000000000000002 R12: ffff88810c2e8138
R13: ffff88810c2e8178 R14: ffff8881093f5580 R15: dead000000000100
FS:  00005555569a7480(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f72ae48f000 CR3: 0000000109f2f000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 btrfs_free_block_groups+0x2fe/0x4f0 fs/btrfs/block-group.c:4301
 close_ctree+0x3c1/0x5f0 fs/btrfs/disk-io.c:4401
 generic_shutdown_super+0x70/0x130 fs/super.c:499
 kill_anon_super+0xd/0x30 fs/super.c:1110
 btrfs_kill_super+0x11/0x20 fs/btrfs/super.c:2138
 deactivate_locked_super+0x28/0x90 fs/super.c:330
 cleanup_mnt+0xb8/0x150 fs/namespace.c:1254
 task_work_run+0x55/0x80 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x16e/0x180 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:297
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6793c7de17
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:00007ffe85df8bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6793c7de17