GEF+GDB version

gef: 2023.04 release
gdb: GNU gdb (Ubuntu 12.1-0ubuntu1~22.04) 12.1

Operating System

Ubuntu 22.04.2 LTS

Describe the issue you encountered

Gdb with gef is slow when debugging kernel in qemu (with command gef-remote --qemu-user --qemu-binary ./vmlinux localhost 1234).

Do you read the docs and look at previously closed issues/PRs for similar cases?

Yes

Architecture impacted

• X86
• X64
• ARM
• ARM64
• MIPS
• MIPS64
• PPC
• PPC64
• RISCV

Describe your issue. Without a proper reproduction step-by-step, your issue will be ignored.

1. downlaod the challenge (https://github.com/Crusaders-of-Rust/corCTF-2022-public-challenge-archive/tree/master/pwn/cache-of-castaways)
2. extract the vmlinux elf from bzImage.
3. start the kernel with qemu with the run script. (and add -s in qemu args)
4. start gdb, execute gef-remote --qemu-user --qemu-binary ./vmlinux localhost 1234
5. normally debug the kernel, execute sth. like si. This is slow.

Minimalist test case

No response

Additional context?

No response