I compiled It, get segmentation fault and cant curl it.

[margesch]

I compiled it with nasm
nasm -f elf64 main.asm -o main.o
Then run
ld -m elf_x86_64 main.o -o asmttpd
Then on Ubuntu Subsystem Linux for Windows 10
after i chmod on it
chmod -R 777 ./asmttpd
I run it
./asmttpd web_root 8000
It gracefully try to bypass firewall by showing a pop up
with option of Public and Private network. However it gives me
segmentation fault (core dumped). And i can't curl on it,
curl on localhost port 8000 connection refused.
How to fix this?

[nemasu]

Hello,
Hmm, I don't have WSL installed, maybe someone else could take a look at this?

[margesch]

So how to fix this did you figure it out? I try compiled release by all other versions , its just the same error.
Try to run program in gdb:
readelf -h ./asmttpd ./web_root | grep 'Entry point'
Entry point: 0x400dba
(gdb)b *0x400dba
(gdb) Breakpoint 1 at: 0x400dba
(gdb) r
[Inferior 1 (process 39) exited normally]
Try to modify source as well:
cmp eax, 8
to
cmp rax, 8
Try to remove segmentation fault as well
main thread:
mov rax, 8
ret
Unfortunately how many effort i try still get segmentation fault.
Notes: I just want to remove the segmentation fault (core dumped)?

[ahmedalnuaimi]

So how to fix this did you figure it out? I try compiled release by all other versions , its just the same error.
Try to run program in gdb:
readelf -h ./asmttpd ./web_root | grep 'Entry point'
Entry point: 0x400dba
(gdb)b *0x400dba
(gdb) Breakpoint 1 at: 0x400dba
(gdb) r
[Inferior 1 (process 39) exited normally]
Try to modify source as well:
cmp eax, 8
to
cmp rax, 8
Try to remove segmentation fault as well
main thread:
mov rax, 8
ret
Unfortunately how many effort i try still get segmentation fault.
Notes: I just want to remove the segmentation fault (core dumped)?

I could get it to run on WSL2 last year by changing the flags of sys_mmap_mem or sys_mmap_stack in syscall.asm