Server crashed with "RIP: get_proc_exe+98"

Issue

• Server crashed with "RIP: get_proc_exe+98"

crash> log
[...]
[22664.902373] CPU: 2 PID: 25515 Comm: PassengerHelper Tainted: P           OE  ------------   3.10.0-514.26.2.el7.x86_64 #1
[22664.902484] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 04/05/2016
[22664.902614] task: ffff880039b5edd0 ti: ffff880170e68000 task.ti: ffff880170e68000
[22664.902702] RIP: 0010:[<ffffffffa0420c41>]  [<ffffffffa0420c41>] get_proc_exe+0x62/0x8b [b9k_7241527]
[22664.902853] RSP: 0018:ffff880170e6baf0  EFLAGS: 00010286
[22664.902893] RAX: 0000000000000000 RBX: ffff88023f97c028 RCX: 00000000c001c0de
[22664.902961] RDX: ffff880229fa0fc0 RSI: 0000000000000000 RDI: ffff880229fa0fc0
[22664.903047] RBP: ffff880170e6bb00 R08: ffffffff818e0a4f R09: ffffea0001beda00
[22664.903133] R10: 00000000000000f4 R11: 0001f97eed70250c R12: 00000000000063ac
[22664.903216] R13: ffffffffa04716b0 R14: ffff880170e6bc50 R15: ffff880229fa0fb0
[22664.903300] FS:  00007f3fe62b8700(0000) GS:ffff880235680000(0000) knlGS:0000000000000000
[22664.903372] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[22664.903421] CR2: 0000000000000338 CR3: 0000000192a4d000 CR4: 00000000000007e0
[22664.903569] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[22664.903704] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[22664.903761] Stack:
[22664.903778]  ffff880229fa0fb0 0000000000000000 ffff880170e6bb28 ffffffffa041e859
[22664.903839]  ffff880229fa0fb0 ffff88006fb64028 ffff880229fa0fb0 ffff880170e6bc18
[22664.903899]  ffffffffa0415f72 000000000159edab ffff880170e6bb58 0000000000000286
[22664.903959] Call Trace:
[22664.904038]  [<ffffffffa041e859>] getThisFilestream+0x2b/0x72 [b9k_7241527]
[22664.904135]  [<ffffffffa0415f72>] _ZN15ProcessTracking19AddProcessIfMissingEPv21ProcessCreationSourcePP11ProcessInfo+0x154/0x4ee [b9k_7241527]
[22664.904267]  [<ffffffff810eacce>] ? getrawmonotonic64+0x2e/0xc0
[22664.904388]  [<ffffffffa040fa14>] ? _ZN8TableKey24DefaultKeyCompareRoutineERKS_S1_+0x4e/0x4e [b9k_7241527]
[22664.904503]  [<ffffffffa041d8f6>] ? linuxGetMilliseconds+0x29/0x77 [b9k_7241527]
[22664.904643]  [<ffffffffa0414355>] _Z32ParityLinuxHandleMemoryOperationijjPiiPv+0x14b/0x3bd [b9k_7241527]
[22664.904800]  [<ffffffff8118b3c6>] ? __alloc_pages_nodemask+0x176/0x420
[22664.904887]  [<ffffffff811dd84e>] ? __kmalloc+0x2e/0x240
[22664.904995]  [<ffffffffa041d448>] ? bit9_printf+0x47/0xca [b9k_7241527]
[22664.905109]  [<ffffffffa0417010>] cbp_common_process_kill+0x1de/0x224 [b9k_7241527]
[22664.905264]  [<ffffffffa041d003>] ? linuxInterlockedIncrement+0x1d/0x1f [b9k_7241527]
[22664.905414]  [<ffffffffa041c929>] ? bit9_malloc+0x42/0xdc [b9k_7241527]
[22664.905519]  [<ffffffffa04194e6>] init_def_mntns+0x130a/0x1dab [b9k_7241527]
[22664.905576]  [<ffffffffa01d6700>] cbstub_lsm_task_kill+0x70/0xc0 [cbproxy_cbp_724080317]
[22664.908352]  [<ffffffff811acd74>] ? do_read_fault.isra.42+0xe4/0x130
[22664.910516]  [<ffffffff812a9a26>] security_task_kill+0x16/0x20
[22664.912737]  [<ffffffff8109a660>] check_kill_permission+0x100/0x170
[22664.915445]  [<ffffffff8109ccab>] group_send_sig_info+0x1b/0x50
[22664.918029]  [<ffffffff8109cde4>] kill_pid_info+0x34/0x50
[22664.920764]  [<ffffffff8109cebf>] SYSC_kill+0x9f/0x1c0
[22664.923425]  [<ffffffff81692ef5>] ? do_page_fault+0x35/0x90
[22664.926238]  [<ffffffff8109eb6e>] SyS_kill+0xe/0x10
[22664.928858]  [<ffffffff81697709>] system_call_fastpath+0x16/0x1b
[22664.931419] Code: 68 04 00 00 48 85 c0 74 35 48 8b 45 f0 48 8b 80 68 04 00 00 48 8b 80 38 03 00 00 48 85 c0 74 1e 48 8b 45 f0 48 8b 80 68 04 00 00 <48> 8b 80 38 03 00 00 48 89 c7 e8 3e 03 00 00 48 89 45 f8 48 8b 
[22664.935788] RIP  [<ffffffffa0420c41>] get_proc_exe+0x62/0x8b [b9k_7241527]
[22664.938066]  RSP <ffff880170e6baf0>
[22664.939985] CR2: 0000000000000338