Kernel panic in nfs4_evict_inode() after VFS: Busy inodes after unmount

Issue

• Kernel panics with the following messages:-

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[11092309.169582] VFS: Busy inodes after unmount of 0:615. Self-destruct in 5 seconds.  Have a nice day...
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[11092309.603960] general protection fault, probably for non-canonical address 0x49b44970fd334072: 0000 [#1] SMP PTI
[11092309.604247] CPU: 11 PID: 3775223 Comm: xx.xx.xxx.xxx-m Kdump: loaded Not tainted 4.18.0-553.36.1.el8_10.x86_64 #1
[11092309.604425] Hardware name: VMware, Inc. VMware7,1/440BX Desktop Reference Platform, BIOS VMW71.00V.18227214.B64.2106252220 06/25/2021
[11092309.604586] RIP: 0010:nfs4_evict_inode+0x30/0x70 [nfsv4]
[11092309.604788] Code: 48 89 fb 48 81 c7 78 01 00 00 e8 9b d8 b3 cb 48 89 df e8 53 3d c1 cb 48 89 df e8 0b 1f 00 00 48 8b 43 28 48 8b 80 00 04 00 00 <48> 83 b8 70 01 00 00 00 74 09 48 8b 43 e0 48 85 c0 75 1d 48 8d bb
[11092309.605189] RSP: 0018:ffffbe0c1e5ebdc8 EFLAGS: 00010246
[11092309.605355] RAX: 49b44970fd334072 RBX: ffffa093d752f100 RCX: 0000000000000000
[11092309.605530] RDX: ffffa093d752f230 RSI: ffffffffffffffff RDI: ffffa093d752f100
[11092309.605697] RBP: ffffa093d752f220 R08: 0000000000000000 R09: ffffbe0c1e5ebb78
[11092309.605868] R10: ffffffffffffffff R11: 0000000000000000 R12: ffffffffc0d9ffe0
[11092309.606029] R13: ffffa093d752f100 R14: ffffa093d752f188 R15: ffffa0a7e18f5450
[11092309.606191] FS:  0000000000000000(0000) GS:ffffa0b8d60c0000(0000) knlGS:0000000000000000
[11092309.606365] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[11092309.606525] CR2: 000055c4ed7f5918 CR3: 0000000998210004 CR4: 00000000007706e0
[11092309.606713] PKRU: 55555554
[11092309.606875] Call Trace:
[11092309.607035]  ? __die_body+0x1a/0x60
[11092309.607198]  ? die_addr+0x38/0x51
[11092309.607357]  ? do_general_protection+0x135/0x280
[11092309.607524]  ? general_protection+0x1e/0x30
[11092309.607688]  ? nfs4_evict_inode+0x30/0x70 [nfsv4]
[11092309.607876]  ? nfs4_evict_inode+0x25/0x70 [nfsv4]
[11092309.608057]  evict+0xd2/0x1a0
[11092309.608202]  nfs4_put_open_state+0xcb/0x100 [nfsv4]
[11092309.608354]  nfs4_do_reclaim+0x399/0x820 [nfsv4]
[11092309.608501]  ? nfs4_state_manager+0x860/0x860 [nfsv4]
[11092309.608644]  nfs4_state_manager+0xda/0x860 [nfsv4]
[11092309.608814]  ? nfs4_state_manager+0x860/0x860 [nfsv4]
[11092309.608972]  nfs4_run_state_manager+0x20/0x40 [nfsv4]
[11092309.609133]  kthread+0x134/0x150
[11092309.609281]  ? set_kthread_struct+0x50/0x50
[11092309.609439]  ret_from_fork+0x1f/0x40