How to run C program in QEMU(running 4.18 linux kernel)

[Taiyu]

I build vmlinux and Bzimage from linux 4.18.
And to enable kernel stop in the breakpoint, I disable the random address 
feature in the kernel.


    Processor type and features ---->
        [] Randomize the address of the kernel image 
(KASLR)And I create 


rootfs using busybox following steps


    dd if=/dev/zero of=rootfs.img bs=1M count=10
    mkfs.ext4 rootfs.img
    sudo mount -t ext4 -o loop rootfs.img ./fs
    sudo make install CONFIG_PREFIX=./fs
    sudo mkdir proc dev etc home mnt
    sudo cp -r ../examples/bootfloppy/etc/* etc/
    sudo chmod -R 777 fs/ 


And run qemu with command 


    qemu-system-x86_64 -kernel ./bzImage \
      -hda ./busybox-1.32.0/rootfs.img \
      -append "root=/dev/sda rw console=ttyS0" -s -S -smp 2 
-nographic -hdb ext4.img


And then I build a hello world program and put its object to rootfs after 
compiling.


&nbsp; &nbsp; #include<stdio.h&gt;
&nbsp; &nbsp; int main()
&nbsp; &nbsp; {
&nbsp; &nbsp; printf("Hello World!\n");
&nbsp; &nbsp; return 0;
&nbsp; &nbsp; }


I run the hello program in QEMU. QEMU reports that&nbsp;


&nbsp; &nbsp; -/bin/sh: ./hello: not found


And then I try to build it with static option


&nbsp; &nbsp; gcc hello.c -static -o hello
Running the hello program in QEMU, it reports "Segmentation fault".