The vmcore file contains the following stack.
#7 [ffffae7b51bffd40] page_fault at ffffffffbcc0111e
[exception RIP: vol_ru_check_update_done+55]
RIP: ffffffffc35083e7 RSP: ffffae7b51bffdf8 RFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8900ad90bc00 RCX: 000000000000001c
RDX: 0000000000000010 RSI: ffff89004ddabc00 RDI: ffff89072eac0000
RBP: ffff89004ddabc00 R8: 0000000000000001 R9: ffffffffc351de00
R10: ffff8900ad90bc00 R11: 0000000000000001 R12: ffff89072eac0000
R13: ffffae7b51bffe30 R14: ffff890079ad7148 R15: ffff89004ddabcc8
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000
#8 [ffffae7b51bffe20] vol_rv_write2_done at ffffffffc351de4e [vxio]
#9 [ffffae7b51bffea0] voliod_iohandle at ffffffffc335d284 [vxio]
#10 [ffffae7b51bffee0] voliod_loop at ffffffffc335d632 [vxio]
#11 [ffffae7b51bfff10] kthread at ffffffffbc31798a
This is a known defect and fixed in etrack 4105953.
Download and apply the latest cumulative patch for Infoscale 7.4.2 or 8.0.