crash on ubuntu 16.04

[xuraymond]

segmentation fault when zcashd syncs blockchain. Patched with pool.diff, on Ubuntu 16.04.

Thread 23 "zcashd" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffbeffd700 (LWP 4763)]
__memset_sse2 () at ../sysdeps/x86_64/multiarch/../memset.S:93
93 ../sysdeps/x86_64/multiarch/../memset.S: No such file or directory.
(gdb) bt
#0 __memset_sse2 () at ../sysdeps/x86_64/multiarch/../memset.S:93
#1 0x0000555555c3ca5c in opRingShift ()
#2 0x0000555555c3d48d in processTimeoutQueue ()
#3 0x0000555555c41596 in epollNextFinishedOperation ()
#4 0x0000555555c3bcf5 in asyncLoop ()
#5 0x0000555555c0cfd4 in poolRpcThread(void*) ()
#6 0x00007ffff7bc16ba in start_thread (arg=0x7fffbeffd700) at pthread_create.c:333
#7 0x00007ffff6a283dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

(gdb) info all-registers
rax 0x7fffb4004868 140736213305448
rbx 0x0 0
rcx 0x7fffb4021000 140736213422080
rdx 0x7fffb4003a00 140736213301760
rsi 0x0 0
rdi 0x7fffb4004868 140736213305448
rbp 0x7fffbeffb160 0x7fffbeffb160
rsp 0x7fffbeffb118 0x7fffbeffb118
r8 0x7fffbeffaff0 140736397815792
r9 0x7fffbeffb000 140736397815808
r10 0xffffffff 4294967295
r11 0x0 0
r12 0x0 0
r13 0x7fffffffbecf 140737488338639
r14 0x7fffbeffd9c0 140736397826496
r15 0x1 1
rip 0x7ffff69b02d0 0x7ffff69b02d0 <__memset_sse2+144>
eflags 0x10287 [ CF PF SF IF RF ]

gdb disas:
0x00007ffff69b02ad <__memset_sse2+109>: movdqu %xmm0,0x20(%rdi)
0x00007ffff69b02b2 <__memset_sse2+114>: movdqu %xmm0,-0x30(%rdi,%rdx,1)
0x00007ffff69b02b8 <__memset_sse2+120>: movdqu %xmm0,0x30(%rdi)
0x00007ffff69b02bd <__memset_sse2+125>: movdqu %xmm0,-0x40(%rdi,%rdx,1)
0x00007ffff69b02c3 <__memset_sse2+131>: add %rdi,%rdx
0x00007ffff69b02c6 <__memset_sse2+134>: and $0xffffffffffffffc0,%rdx
0x00007ffff69b02ca <__memset_sse2+138>: cmp %rdx,%rcx
0x00007ffff69b02cd <__memset_sse2+141>: je 0x7ffff69b0274 <__memset_sse2+52>
0x00007ffff69b02cf <__memset_sse2+143>: nop
=> 0x00007ffff69b02d0 <__memset_sse2+144>: movdqa %xmm0,(%rcx)
0x00007ffff69b02d4 <__memset_sse2+148>: movdqa %xmm0,0x10(%rcx)
0x00007ffff69b02d9 <__memset_sse2+153>: movdqa %xmm0,0x20(%rcx)
0x00007ffff69b02de <__memset_sse2+158>: movdqa %xmm0,0x30(%rcx)

zcash always crashes at the same location and stack trace (see above) after having run for several minutes to several hours.

[eXtremal-ik7]

Sorry, for long time answer.
Have you core dump for crashed zcashd ?