System crashed with `tls1_create_ssl+0x2c0`

Issue

• System crashed with the below log

...
[1604035.447577] BUG: unable to handle kernel NULL pointer dereference at 0000000000000058
[1604035.448631] IP: [<ffffffffc0863500>] tls1_create_ssl+0x2c0/0x300 [dsa_filter]
[1604035.448886] PGD 0 
[1604035.448900] Oops: 0000 [#1] SMP 
[1604035.448999] Modules linked in: bmhook(OE) tmhook(OE) gc_enforcement(OE) dsa_filter(POE) dsa_filter_hook(OE) devlink ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat iptable_mangle iptable_security iptable_raw nf_conntrack vmw_vsock_vmci_transport vsock ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc sr_mod cdrom crc32_pclmul ghash_clmulni_intel ppdev vmw_balloon aesni_intel lrw gf128mul glue_helper ablk_helper cryptd pcspkr joydev sg ahci e1000 vmw_vmci libahci i2c_piix4 parport_pc parport ip_tables xfs libcrc32c sd_mod
[1604035.450912]  crc_t10dif crct10dif_generic ata_generic pata_acpi vmwgfx drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm ata_piix libata drm mptspi crct10dif_pclmul crct10dif_common scsi_transport_spi mptscsih crc32c_intel serio_raw mptbase drm_panel_orientation_quirks dm_mirror dm_region_hash dm_log dm_mod
[1604035.451599] CPU: 5 PID: 4701 Comm: ds_nuagent Kdump: loaded Tainted: P           OE  ------------ T 3.10.0-1127.19.1.el7.x86_64 #1
[1604035.451995] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/21/2015
[1604035.452410] task: ffff941cf4593150 ti: ffff941cfb72c000 task.ti: ffff941cfb72c000
[1604035.452627] RIP: 0010:[<ffffffffc0863500>]  [<ffffffffc0863500>] tls1_create_ssl+0x2c0/0x300 [dsa_filter]
[1604035.453052] RSP: 0018:ffff941cfb72f3d0  EFLAGS: 00010246
[1604035.453254] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[1604035.453454] RDX: ffffffffc098c500 RSI: 0000000000001390 RDI: 0000000000000005
[1604035.453664] RBP: ffff941cfb72f418 R08: 0000000000000001 R09: 0000000000000000
[1604035.453865] R10: ffff9416ffc01200 R11: ffffffffffffffff R12: ffff941d6aa9c048
[1604035.455179] R13: 0000000000000006 R14: 0000000000000303 R15: 0000000000000030
[1604035.455213] FS:  00007f6b0ada5c00(0000) GS:ffff941dbfd40000(0000) knlGS:0000000000000000
[1604035.455250] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[1604035.455277] CR2: 0000000000000058 CR3: 000000077b4dc000 CR4: 00000000000007e0
[1604035.457415] Call Trace:
[1604035.458530]  [<ffffffffc0867fa2>] ssl_applyKeys+0x192/0x280 [dsa_filter]
[1604035.459650]  [<ffffffffc0869265>] ssl_RecordLayer+0x575/0x9a0 [dsa_filter]
[1604035.460774]  [<ffffffffc08ec83f>] ? dsx_process+0x3ef/0xf30 [dsa_filter]
[1604035.461844]  [<ffffffffc05f9847>] ? e1000_xmit_frame+0x7c7/0x1120 [e1000]
[1604035.462911]  [<ffffffffc0869930>] ssl_Recv+0x2a0/0x630 [dsa_filter]
[1604035.463952]  [<ffffffffc084e514>] ssl_dsx_process+0x144/0xb50 [dsa_filter]
[1604035.464986]  [<ffffffffc084f0d9>] dsx_process_payload_packet_gen+0x1b9/0x630 [dsa_filter]
[1604035.466052]  [<ffffffffc084f563>] dsx_process_payload_packet+0x13/0x20 [dsa_filter]
[1604035.467112]  [<ffffffffc08518d7>] dsa_slim_output+0x2e7/0xf30 [dsa_filter]
[1604035.468123]  [<ffffffffc081f26d>] ? tb_free+0x11d/0x4f0 [dsa_filter]
[1604035.469120]  [<ffffffffc0859955>] stateful_tcp_filter+0xd55/0x2430 [dsa_filter]
[1604035.470104]  [<ffffffff8958856e>] ? _raw_spin_unlock_bh+0x1e/0x20
[1604035.471066]  [<ffffffffc0820352>] ? tb_spin_unlock+0x12/0x20 [dsa_filter]
[1604035.472011]  [<ffffffffc0825761>] ? bucket_find_conn+0xe1/0x4b0 [dsa_filter]
[1604035.472948]  [<ffffffffc085b065>] stateful_process+0x35/0xa0 [dsa_filter]
[1604035.473890]  [<ffffffffc083ea98>] core_pkt_filter+0x2e8/0x10c0 [dsa_filter]
[1604035.474780]  [<ffffffff890274f9>] ? ___slab_alloc+0x229/0x520
[1604035.475661]  [<ffffffffc083fe5a>] core_pkt_hook+0x5ea/0xc10 [dsa_filter]
[1604035.476564]  [<ffffffffc086ae05>] complete_buffered_packets+0x4c5/0xa50 [dsa_filter]
[1604035.477503]  [<ffffffffc086e23c>] ssl_set_master_secret+0x4bc/0xba0 [dsa_filter]
[1604035.478366]  [<ffffffffc082f6fb>] dsa_set_ssl_master_secret+0x32b/0x9a0 [dsa_filter]
[1604035.479204]  [<ffffffff88edb6d0>] ? try_to_wake_up+0x190/0x390
[1604035.480031]  [<ffffffffc081826e>] dsa_ioctl_dom+0x24e/0x960 [dsa_filter]
[1604035.480860]  [<ffffffffc0818c4e>] dsa_lin_uioctl+0x1ce/0x2f0 [dsa_filter]
[1604035.481645]  [<ffffffff890628c0>] do_vfs_ioctl+0x3a0/0x5b0
[1604035.482410]  [<ffffffff89062b71>] SyS_ioctl+0xa1/0xc0
[1604035.483171]  [<ffffffff89592e09>] ? system_call_after_swapgs+0x96/0x13a
[1604035.483913]  [<ffffffff89592ed2>] system_call_fastpath+0x25/0x2a
[1604035.484649]  [<ffffffff89592e15>] ? system_call_after_swapgs+0xa2/0x13a
[1604035.485386] Code: 5d c3 66 0f 1f 84 00 00 00 00 00 48 8b 7b 58 45 31 ed e9 78 ff ff ff 0f 1f 40 00 c7 83 74 13 00 00 00 00 00 00 e9 c1 fe ff ff 90 <48> 8b 3c 25 58 00 00 00 45 31 ed 45 31 e4 e9 51 ff ff ff 0f 1f 
[1604035.487805] RIP  [<ffffffffc0863500>] tls1_create_ssl+0x2c0/0x300 [dsa_filter]
[1604035.488631]  RSP <ffff941cfb72f3d0>
[1604035.489397] CR2: 0000000000000058