Finally after much configuration changes I got a complete a crash dump I could inspect:  KERNEL: /usr/lib/debug/lib/modules/3.10.0-327.28.3.el7.x86_64/vmlinuxDUMPFILE: vmcore  [PARTIAL DUMP]    CPUS: 64    DATE: Wed Aug 24 20:11:12 2016  UPTIME: 02:16:27LOAD AVERAGE: 1.00, 8.29, 7.26   TASKS: 1175NODENAME: dev1.soft.com RELEASE: 3.10.0-327.28.3.el7.x86_64 VERSION: #1 SMP Thu Aug 18 19:05:49 UTC 2016 MACHINE: x86_64  (2260 Mhz)  MEMORY: 256 GB   PANIC: BUG: unable to handle kernel paging request at 00007f3b31c9a798In Crash I ran btcrash> btPID: 11768  TASK: ffff8840173d0000  CPU: 38  COMMAND: cp #0 [ffff884017277660] machine_kexec at ffffffff81051e9b #1 [ffff8840172776c0] crash_kexec at ffffffff810f27c2 #2 [ffff884017277790] oops_end at ffffffff8163f448 #3 [ffff8840172777b8] no_context at ffffffff8162f588 #4 [ffff884017277808] __bad_area_nosemaphore at ffffffff8162f61e #5 [ffff884017277850] bad_area at ffffffff8162f942 #6 [ffff884017277878] __do_page_fault at ffffffff81642225 #7 [ffff8840172778d8] do_page_fault at ffffffff81642353 #8 [ffff884017277900] page_fault at ffffffff8163e648    [exception RIP: radix_tree_next_chunk+323]    RIP: ffffffff812f8e83  RSP: ffff8840172779b8  RFLAGS: 00010246    RAX: 0000000000000000  RBX: 0000000000000000  RCX: 0000000000000006    RDX: 00007f3b31c9a770  RSI: ffff884017277a00  RDI: 0000000000000006    RBP: ffff8840172779e0   R8: ffff884017277a00   R9: 0000000000000000    R10: 0000000000000000  R11: 0000000000000220  R12: 0000000000000040    R13: 0000000000000000  R14: 0000000000000012  R15: ffff880fddf9cfd8    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018 #9 [ffff8840172779e8] __find_get_pages at ffffffff8116c065#10 [ffff884017277a50] __pagevec_lookup at ffffffff8117880e#11 [ffff884017277a68] truncate_inode_pages_range at ffffffff81179240#12 [ffff884017277bb8] truncate_pagecache at ffffffff81179927#13 [ffff884017277be0] ext4_setattr at ffffffffa0226889 [ext4]#14 [ffff884017277c40] notify_change at ffffffff811fbd09#15 [ffff884017277c88] do_truncate at ffffffff811dce03#16 [ffff884017277d00] do_last at ffffffff811ec3a2#17 [ffff884017277db0] path_openat at ffffffff811eed02#18 [ffff884017277e48] do_filp_open at ffffffff811f04cb#19 [ffff884017277f18] do_sys_open at ffffffff811dde73#20 [ffff884017277f70] sys_open at ffffffff811ddf8e#21 [ffff884017277f80] system_call_fastpath at ffffffff81646b49    RIP: 00007fdad8f142b0  RSP: 00007ffdda059160  RFLAGS: 00010246    RAX: 0000000000000002  RBX: ffffffff81646b49  RCX: 00007fdad8f13e64    RDX: 0000000000000000  RSI: 0000000000000201  RDI: 00007ffdda05a385    RBP: 00007ffdda059550   R8: 00007ffdda059730   R9: 00000000000001b4    R10: 00007ffdda058ee0  R11: 0000000000000246  R12: ffffffff811ddf8e    R13: ffff884017277f78  R14: 00007ffdda05a34c  R15: 00007ffdda059730    ORIG_RAX: 0000000000000002  CS: 0033  SS: 002bcrash> filesPID: 11768  TASK: ffff8840173d0000  CPU: 38  COMMAND: cpROOT: /    CWD: /home/dev/OPT-10.7.1/data FD       FILE            DENTRY           INODE       TYPE PATH  0 ffff8830264e1e00 ffff882028c00240 ffff882029270850 CHR  /dev/null  1 ffff8830264e1c00 ffff882028c00240 ffff882029270850 CHR  /dev/null  2 ffff8830264e1c00 ffff882028c00240 ffff882029270850 CHR  /dev/null  3 ffff8830287ed800 ffff8820185026c0 ffff88101f699940 REG  /home/dev/OPT-10.7.1/files/Ratings.txtThe difficulty is that I don't know why it was unable to cp the file. It does this daily sometimes several times a day and the file is about 7.5Gb.What can I do to get more info and recover the box?UPDATED: I ran fsck on the /home path and it looks fine exit code 0:UPDATED 2: I re-ran with the -f flag return code 0:
Centos 7 Random Panic / Oops
centos;cp;kernel panic;core dump