DevHeads IoT Integration Server•17mo ago

Why does my assembly network server application cause a segmentation fault?

I'm working on a network server application in assembly language so I can understand low level networking concepts.

So I've implemented a socket server using assembly language system calls, but I'm encountering a segmentation fault during execution.

I have complied the binary on an

Intel Core i7 12700K processor

Intel Core i7 12700K processor

Intel Core i7 12700K processor

Intel Core i7 12700K processor running

Ubuntu 22.04

Ubuntu 22.04

Ubuntu 22.04

Ubuntu 22.04 and the

NASM assembler

NASM assembler

NASM assembler

NASM assembler .
I wander what is causing the segmentation fault ?

$ nasm -f elf32 socket.asm ; ld -m elf_i386 -o socket socket.o

$ ./socket 

Segmentation fault (core dumped)

$ nasm -f elf32 socket.asm ; ld -m elf_i386 -o socket socket.o

$ ./socket 

Segmentation fault (core dumped)

$ nasm -f elf32 socket.asm ; ld -m elf_i386 -o socket socket.o

$ ./socket 

Segmentation fault (core dumped)

$ nasm -f elf32 socket.asm ; ld -m elf_i386 -o socket socket.o

$ ./socket 

Segmentation fault (core dumped)

Why does my assembly network server application cause a segmentation fault?

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