Kernel panic due to page fault in _raw_spin_lock_irqsave() called by vdd_ring_doorbell() from third-party kernel module veloce_driver

Issue

• The kernel experiences panic that is triggered by the veloce_driver kernel module.
• Kernel panics with following messages:

[4847971.469735] BUG: unable to handle kernel 
[4847971.470627] paging request at ffffffffa37ff8e6
[4847971.471471] IP: [<ffffffffa3dba7a2>] _raw_spin_lock_irqsave+0x22/0x40
[4847971.472307] PGD 15d6614067 PUD 15d6615063 PMD 15d5a000e1 
[4847971.473149] Oops: 0003 [#1] SMP 
[4847971.473990] Modules linked in: tcp_diag inet_diag ses enclosure nfsv3 nfs_acl nfs lockd grace fscache v
eloce_driver(OE) raid_class scsi_transport_sas sunrpc ext4 mbcache jbd2 dell_smbios iTCO_wdt iTCO_vendor_sup
port dell_wmi_descriptor dcdbas vfat fat i10nm_edac nfit libnvdimm intel_powerclamp coretemp intel_rapl iosf
_mbi kvm_intel kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_help
er cryptd pcspkr sg i2c_i801 mei_me mei wmi ipmi_si ipmi_devintf ipmi_msghandler pinctrl_lewisburg pinctrl_i
ntel tpm_crb acpi_power_meter acpi_pad binfmt_misc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_gener
ic mgag200 i2c_algo_bit drm_kms_helper i40e syscopyarea sysfillrect crct10dif_pclmul sysimgblt crct10dif_com
mon fb_sys_fops ttm crc32c_intel megaraid_sas ahci drm tg3
[4847971.479195]  libahci libata ptp pps_core drm_panel_orientation_quirks dm_mirror dm_region_hash dm_log d
m_mod
[4847971.480918] CPU: 6 PID: 16942 Comm: testbench.veloc Kdump: loaded Tainted: G        W  OE  ------------
   3.10.0-1160.119.1.el7.x86_64 #1
[4847971.482638] Hardware name: Dell Inc. PowerEdge R750/0V3GRK, BIOS 1.11.2 08/10/2023
[4847971.483496] task: ffff94d52f32e300 ti: ffff94ca0a5f0000 task.ti: ffff94ca0a5f0000
[4847971.484343] RIP: 0010:[<ffffffffa3dba7a2>]  [<ffffffffa3dba7a2>] _raw_spin_lock_irqsave+0x22/0x40
[4847971.485203] RSP: 0018:ffff94ca0a5f3d80  EFLAGS: 00010046
[4847971.486046] RAX: 0000000000000000 RBX: 0000000000000292 RCX: ffff94d53cbfe410
[4847971.486885] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffffa37ff8e6
[4847971.487707] RBP: ffff94ca0a5f3d88 R08: ffff94d53cbfe410 R09: ffff9474e8c2e138
[4847971.488518] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000100
[4847971.489322] R13: 000000000000801e R14: 0000000000006b1b R15: 00007f0c715d6410
[4847971.490121] FS:  00007f0c86041940(0000) GS:ffff9475400c0000(0000) knlGS:0000000000000000
[4847971.490917] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[4847971.491699] CR2: ffffffffa37ff8e6 CR3: 000000b66a52a000 CR4: 0000000000760fe0
[4847971.492474] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[4847971.493235] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[4847971.493983] PKRU: 55555554
[4847971.494722] Call Trace:
[4847971.495452]  [<ffffffffc16c0a16>] vdd_ring_doorbell+0x66/0x290 [veloce_driver]
[4847971.496179]  [<ffffffffa37ff8be>] ? do_numa_page+0x1be/0x260
[4847971.496894]  [<ffffffffc16b300e>] vdd_fops_ioctl+0x62e/0x1620 [veloce_driver]
[4847971.497595]  [<ffffffffa3802293>] ? handle_mm_fault+0xaf3/0x1190
[4847971.498287]  [<ffffffffa385b2b3>] ? do_sync_write+0x93/0xe0
[4847971.498971]  [<ffffffffa38719d8>] do_vfs_ioctl+0x3a8/0x5c0
[4847971.499645]  [<ffffffffa3dbf7f8>] ? __do_page_fault+0x238/0x510
[4847971.500304]  [<ffffffffa3871c71>] SyS_ioctl+0x81/0xa0
[4847971.500950]  [<ffffffffa3dc539a>] system_call_fastpath+0x25/0x2a
[4847971.501582] Code: 5d c3 cc cc cc cc 0f 1f 00 0f 1f 44 00 00 55 48 89 e5 53 9c 58 0f 1f 44 00 00 48 89 c3 fa 66 0f 1f 44 00 00 31 c0 ba 01 00 00 00 <f0> 0f b1 17 85 c0 75 0a 48 89 d8 5b 5d c3 cc cc cc cc 89 c6 e8 
[4847971.502889] RIP  [<ffffffffa3dba7a2>] _raw_spin_lock_irqsave+0x22/0x40
[4847971.503514]  RSP <ffff94ca0a5f3d80>
[4847971.504118] CR2: ffffffffa37ff8e6