app-compat: Failure when running an HTTP Go server

[razvand]

Describe the bug

When running a simple HTTP Go server under binary compatibility mode, using the app-elfloader, it fails.

Steps to reproduce

Use the setup in the corresponding PR in the catalog-for-maintainers repository.

Namely, use the following commands (copy-paste should work):

git clone https://github.com/unikraft/catalog-for-maintainers
cd catalog-for-maintainers
git remote add unikraft-upb https://github.com/unikraft-upb/catalog
git fetch unikraft-upb
git checkout -b razvand/examples/http-go1.21 unikraft-upb/razvand/examples/http-go1.21
cd library/base
../../utils/bincompat/base-build-all.sh
cd ../../examples/http-go1.21
make initrd
../../utils/bincompat/generate.py
./run-qemu-x86_64.sh ../../kernels/base_qemu-x86_64-strace

On another console, run twice:

curl 172.44.0.2:8080

You can close the QEMU running instance with Ctrl+a x.

Expected behavior

The application should start successfully and way for connections on port 8080.

Which architectures were you using or does this bug affect?

x86_64

Which platforms were you using or does this bug affect?

kvm

Relevant log output

clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=802591422}) = OK
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=813456265}) = OK
epoll_pwait(0x4, 0x41f27f4a8, ...) = 0x0
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=830827029}) = OK
epoll_pwait(0x4, 0x41f27f4a8, ...) = 0x1
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=847311059}) = OK
read(fd:7, <out>"", 4096) = 0
epoll_ctl(0x4, 0x2, ...) = 0x0
close(fd:7) = OK
clock_gettime(CLOCK_REALTIME, <out>timespec:{tv_sec=1703008599, tv_nsec=772111803}) = OK
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=883407633}) = OK
epoll_pwait(0x4, 0x10003aab28, ...) = 0x0
epoll_pwait(0x4, 0x41f27f4b0, ...) = 0x0
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=905821893}) = OK
nanosleep(0x10003ab120, 0x0, ...) = 0x0
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=922071160}) = OK
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=80, tv_nsec=932994759}) = OK
epoll_pwait(0x4, 0x41f27f4b0, ...) = 0x1
clock_gettime(CLOCK_MONOTONIC, <out>timespec:{tv_sec=83, tv_nsec=10049318}) = OK
[   83.025670] CRIT: [libkvmplat] RIP: 00000010008c2435 CS: 0008
[   83.035402] CRIT: [libkvmplat] RSP: 000000c000045bc8 SS: 0010 EFLAGS: 00010246
[   83.046336] CRIT: [libkvmplat] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   83.056659] CRIT: [libkvmplat] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000c0000061a0
[   83.066762] CRIT: [libkvmplat] RBP: 000000c000045c60 R08: 0000000000000001 R09: 000000c000021228
[   83.076360] CRIT: [libkvmplat] R10: 0000000000000001 R11: 0000000000000246 R12: 000000041f27faa8
[   83.085931] CRIT: [libkvmplat] R13: 0000000000000000 R14: 000000c0000061a0 R15: 0000000000000006
[   83.095517] CRIT: [libkvmplat] base is 0xc000045c60 caller is 0
[   83.102764] CRIT: [libkvmplat] base is 0xc000045db8 caller is 0xc00009c000
[   83.109617] CRIT: [libkvmplat] base is 0x13c24d caller is 0x480574011843f610
[   83.116706] CRIT: [libkvmplat] base is 0x538b482e78c08548 Unhandled Trap 13 (general protection), error code=0x0
[   83.128375] CRIT: [libkvmplat] RIP: 000000000010fdd7 CS: 0008
[   83.134410] CRIT: [libkvmplat] RSP: 00000000001cfee0 SS: 0010 EFLAGS: 00010002
[   83.143954] CRIT: [libkvmplat] RAX: 0000000000000000 RBX: 538b482e78c08548 RCX: 0000000000000780
[   83.155066] CRIT: [libkvmplat] RDX: 00000000000003d4 RSI: 0000000000000000 RDI: 0000000000185da7
[   83.165558] CRIT: [libkvmplat] RBP: 00000000001cfef0 R08: 0000000000000046 R09: 000000000000000b
[   83.177409] CRIT: [libkvmplat] R10: 000000000000003d R11: 00000000000003fd R12: 0000000000000005
[   83.187898] CRIT: [libkvmplat] R13: 00000000001cff50 R14: 000000c0000061a0 R15: 0000000000000006
[   83.198513] CRIT: [libkvmplat] Crashing