BTRFS info (device loop0): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
VFS: Busy inodes after unmount of loop0 (btrfs)
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kernel BUG at fs/super.c:651!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 7788 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 60401005 (nZCv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : generic_shutdown_super+0x2b4/0x2b8 fs/super.c:649
lr : generic_shutdown_super+0x2b4/0x2b8 fs/super.c:649
sp : ffff80009eb57ba0
x29: ffff80009eb57ba0 x28: 1fffe0001aa1b752 x27: 0000000000000008
x26: 0000000000000003 x25: dfff800000000000 x24: 1fffe0001e6d6cf1
x23: ffff80008b3d6b20 x22: dfff800000000000 x21: 0000000000000000
x20: ffff80008f56d220 x19: ffff0000f36b6668 x18: 0000000000000008
x17: ffff80008ee7d000 x16: ffff80008ae725bc x15: 0000000000000001
x14: 1ffff00013d6aec8 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000001 x10: 0000000000ff0100 x9 : 22536872a3460800
x8 : 22536872a3460800 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009eb57338 x4 : ffff80008ef650a0 x3 : ffff800082f1209c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000002f
Call trace:
 generic_shutdown_super+0x2b4/0x2b8 fs/super.c:649
 kill_anon_super+0x4c/0x7c fs/super.c:1225
 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2091
 deactivate_locked_super+0xc4/0x12c fs/super.c:472
 deactivate_super+0xe0/0x100 fs/super.c:505
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: f0052ba0 913d0000 aa1303e1 95cf8b8f (d4210000) 
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