Kernel panic is observed during vm cloning in RHEL9 with Mellanox ConnectX-6 Nic.

Issue

• Kernel panic is observed during vm cloning in RHEL9 with Mellanox ConnectX-6 Nic.

[143678.701586] BUG: kernel NULL pointer dereference, address: 00000000000000c8
[143678.701589] #PF: supervisor read access in kernel mode
[143678.701590] #PF: error_code(0x0000) - not-present page
[143678.701592] PGD 38b0cb067 P4D 0 
[143678.701594] Oops: 0000 [#1] PREEMPT SMP NOPTI
[143678.701597] CPU: 35 PID: 8400 Comm: rpc-virtnodedev Kdump: loaded Tainted: G        W        --------- ---  5.14.0-70.22.1.el9_0.x86_64 #1
[143678.701600] Hardware name: Dell Inc. PowerEdge XR11/0P2RNT, BIOS 1.9.1 10/27/2022
[143678.701601] RIP: 0010:cmd_exec+0x57/0x5e0 [mlx5_core]
[143678.701648] Code: ce c1 ee 10 48 89 44 24 10 8b 44 24 78 89 44 24 1c 65 48 8b 04 25 28 00 00 00 48 89 44 24 30 31 c0 48 8b 47 10 c6 44 24 2b 00 <83> b8 c8 00 00 00 01 74 5d 48 8d 54 24 2c 48 8d 4c 24 2b 4c 89 e7
[143678.701650] RSP: 0018:ff556975460fbb08 EFLAGS: 00010246
[143678.701652] RAX: 0000000000000000 RBX: 0000000004500000 RCX: ff1df86454cbc8a0
[143678.701654] RDX: 0000000000000050 RSI: 0000000000000805 RDI: ff1df861173801a0
[143678.701655] RBP: ff1df861173801a0 R08: 0000000000000050 R09: 0000000000000000
[143678.701656] R10: ff1df861173801a0 R11: 0000000000000000 R12: ff1df861173801a0
[143678.701657] R13: ff1df86454cbc8a0 R14: ff1df86454cbc8a0 R15: ff1df86454cbc360
[143678.701658] FS:  00007fbc760fb640(0000) GS:ff1df8be700c0000(0000) knlGS:0000000000000000
[143678.701660] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[143678.701661] CR2: 00000000000000c8 CR3: 00000001c3842004 CR4: 0000000000773ee0
[143678.701663] PKRU: 55555554
[143678.701664] Call Trace:
[143678.701668]  mlx5_cmd_exec+0x1f/0x40 [mlx5_core]
[143678.701696]  mlx5_core_access_reg+0xdf/0x130 [mlx5_core]
[143678.701728]  mlx5_query_port_ptys+0x62/0x80 [mlx5_core]
[143678.701756]  mlx5e_ethtool_get_link_ksettings+0x72/0x5a0 [mlx5_core]
[143678.701800]  ? kernfs_fop_open+0x298/0x3d0
[143678.701805]  speed_show+0x7d/0xc0
[143678.701811]  dev_attr_show+0x16/0x40
[143678.701814]  sysfs_kf_seq_show+0x98/0xf0
[143678.701817]  seq_read_iter+0x11d/0x4b0
[143678.701821]  new_sync_read+0x115/0x1a0
[143678.701824]  vfs_read+0xf3/0x180
[143678.701826]  ksys_read+0x5f/0xe0
[143678.701828]  do_syscall_64+0x38/0x90
[143678.701833]  entry_SYSCALL_64_after_hwframe+0x44/0xae