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+A NULL pointer dereference issue in elf2dmp
+Description of problem:
+SIGSEGV in get_pml4e for it didn't handle NULL result properly.
+Steps to reproduce:
+1.launch qemu and running "gab attach -p $QEMU_PID", run "gcore" inside gdb to generate coredump
+2../elf2dmp ./core.111 ./out.dmp 
+3.get segemantation fault
+Additional information:
+![1](/uploads/39da5ed2da15b105664ee7ee05f69078/1.png)