.
Thread 1 (process 1855):
#0  0x001b5416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x002dbcb1 in *__GI_raise (sig=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
	resultvar = <value optimized out>
	resultvar = <value optimized out>
	pid = 4251636
	selftid = 1855
#2  0x002df18e in *__GI_abort () at abort.c:59
	save_stage = Unhandled dwarf expression opcode 0x9f