[google/syzkaller] c162cd: executor, sys/linux, pkg: enable syzos for riscv64

[Jiakai Xu]

Branch: refs/heads/gh-readonly-queue/master/pr-6656-787dfb7c5a058a72a4936baaab3c96c076d03079
Home: https://github.com/google/syzkaller
Commit: c162cde9eaf50b92de5277df3e48c93349bf45a3
https://github.com/google/syzkaller/commit/c162cde9eaf50b92de5277df3e48c93349bf45a3
Author: 6eanut <jiakai...@gmail.com>
Date: 2026-02-25 (Wed, 25 Feb 2026)

Changed paths:
M executor/common_kvm_riscv64.h
A executor/common_kvm_riscv64_syzos.h
M executor/kvm.h
M pkg/vminfo/linux_syscalls.go
M sys/linux/dev_kvm.txt
M sys/linux/dev_kvm_riscv64.txt
A sys/linux/test/riscv64-syz_kvm_setup_syzos_vm
A sys/linux/test/riscv64-syz_kvm_setup_syzos_vm-csrr
A sys/linux/test/riscv64-syz_kvm_setup_syzos_vm-csrw
M tools/check-syzos.sh

Log Message:
-----------
executor, sys/linux, pkg: enable syzos for riscv64

This patch enables syzos for riscv64 and implements
the corresponding pseudo syscalls.

Pseudo syscalls:
- syz_kvm_setup_syzos_vm
- syz_kvm_add_vcpu
- syz_kvm_assert_syzos_uexit

Syzos guest support:
- guest_uexit
- guest_execute_code
- guest_handle_csrr and guest_handle_csrw

Test seeds:
- riscv64-syz_kvm_setup_syzos_vm
- riscv64-syz_kvm_setup_syzos_vm-csrr
- riscv64-syz_kvm_setup_syzos_vm-csrw



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[Jiakai Xu]

Branch: refs/heads/master