Busybox doesn't run console

I try to run linux on qemu with RISC-V and run busybox as init process. Linux is loaded successfully, but when it run's busybox, it freezes on

run_actions(SYSINIT);

As result, I see in console

[   39.492453] Run /init as init process

And then it freezes. I can't write to console for debug, because console hasn't run yet.

I see, that busybox freeze on parsing inittab on /dev/console::sysinit:-/bin/ash.