BTRFS info (device loop7): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
VFS: Busy inodes after unmount of loop7 (btrfs)
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kernel BUG at fs/super.c:505!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 7041 Comm: syz-executor Not tainted 6.1.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : generic_shutdown_super+0x324/0x328 fs/super.c:503
lr : generic_shutdown_super+0x324/0x328 fs/super.c:503
sp : ffff800021147910
x29: ffff800021147910 x28: 1ffff00002b39aa9 x27: dfff800000000000
x26: 0000000000000002 x25: 0000000000000002 x24: 1fffe000187f18fb
x23: dfff800000000000 x22: ffff8000127d3dc0 x21: 0000000000000000
x20: ffff80001609ec60 x19: ffff0000c3f8c6a8 x18: ffff800021146bc0
x17: 00000000ffff0000 x16: ffff8000122959bc x15: 0000000000000000
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : b2f817c2910b7e00
x8 : b2f817c2910b7e00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800021147218 x4 : ffff800015ab30e0 x3 : ffff80000aaa8ccc
x2 : ffff0001b3cf8cd0 x1 : 0000000100000000 x0 : 000000000000002f
Call trace:
 generic_shutdown_super+0x324/0x328 fs/super.c:503
 kill_anon_super+0x4c/0x74 fs/super.c:1128
 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2449
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: f004d2e0 91158000 aa1303e1 95d2c1b3 (d4210000) 
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