BTRFS info (device loop7): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop7): at unmount dio bytes count 8192
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WARNING: CPU: 0 PID: 6145 at fs/btrfs/block-group.c:159 btrfs_put_block_group+0x2f8/0x350 fs/btrfs/block-group.c:159
Modules linked in:
CPU: 0 UID: 0 PID: 6145 Comm: syz-executor Not tainted 6.13.0-rc1-syzkaller-00036-g5076001689e4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:btrfs_put_block_group+0x2f8/0x350 fs/btrfs/block-group.c:159
Code: 42 80 3c 20 00 74 08 4c 89 f7 e8 63 0c 23 fe bf 80 16 00 00 49 03 3e 4c 89 f6 e8 03 9b 01 00 e9 c1 fe ff ff e8 49 50 bb fd 90 <0f> 0b 90 e9 85 fe ff ff e8 3b 50 bb fd e9 7b fe ff ff e8 31 50 bb
RSP: 0018:ffffc90003a17ac8 EFLAGS: 00010293
RAX: ffffffff83e42187 RBX: 0000000000002000 RCX: ffff888025335a00
RDX: 0000000000000000 RSI: 0000000000002000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff83e42007 R09: 1ffff1100cadf352
R10: dffffc0000000000 R11: ffffed100cadf353 R12: dffffc0000000000
R13: 1ffff1100493ad2e R14: ffff8880249d6800 R15: ffff8880656f8188
FS:  000055557e0d4500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc652f2cfe4 CR3: 000000006b41c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xb7a/0x1080 fs/btrfs/block-group.c:4466
 close_ctree+0x77f/0xd60 fs/btrfs/disk-io.c:4376
 generic_shutdown_super+0x139/0x2d0 fs/super.c:642
 kill_anon_super+0x3b/0x70 fs/super.c:1237
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2112
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x24f/0x310 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78a8981247
Code: a8 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 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc00da6478 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f78a8981247
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc00da6530
RBP: 00007ffc00da6530 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc00da75b0
R13: 00007f78a89f3824 R14: 00000000000246d0 R15: 00007ffc00da75f0
 </TASK>