BTRFS info (device loop6): last unmount of filesystem 14d642db-7b15-43e4-81e6-4b8fac6a25f8
VFS: Busy inodes after unmount of loop6 (btrfs)
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kernel BUG at fs/super.c:505!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8764 Comm: syz-executor Not tainted 6.1.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:generic_shutdown_super+0x339/0x340 fs/super.c:503
Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 29 90 f0 ff 48 8b 13 48 c7 c7 e0 5e 19 8b 4c 89 fe e8 a7 ec b3 08 <0f> 0b 0f 1f 44 00 00 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00
RSP: 0018:ffffc90003297cf0 EFLAGS: 00010246
RAX: 000000000000002f RBX: ffffffff8d842c00 RCX: 5b83ccf6a4f90f00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100ab484fb R08: ffffffff816e5d5c R09: fffff52000652f3d
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8b4d5818 R15: ffff888055a426a8
FS:  00005555915aa500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdc0c74fa8 CR3: 000000006605b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kill_anon_super+0x37/0x60 fs/super.c:1128
 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2449
 deactivate_locked_super+0xa0/0x110 fs/super.c:332
 cleanup_mnt+0x490/0x520 fs/namespace.c:1186
 task_work_run+0x246/0x300 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6c8d17fb47
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:00007ffd4294dad8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f6c8d1f15fc RCX: 00007f6c8d17fb47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4294db90
RBP: 00007ffd4294db90 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd4294ec10
R13: 00007f6c8d1f15fc R14: 000000000004dd43 R15: 00007ffd4294ec50
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_shutdown_super+0x339/0x340 fs/super.c:503
Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 29 90 f0 ff 48 8b 13 48 c7 c7 e0 5e 19 8b 4c 89 fe e8 a7 ec b3 08 <0f> 0b 0f 1f 44 00 00 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00
RSP: 0018:ffffc90003297cf0 EFLAGS: 00010246
RAX: 000000000000002f RBX: ffffffff8d842c00 RCX: 5b83ccf6a4f90f00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100ab484fb R08: ffffffff816e5d5c R09: fffff52000652f3d
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8b4d5818 R15: ffff888055a426a8
FS:  00005555915aa500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b057f1000 CR3: 000000006605b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400