...reproduced with ppc64_defconfig
nothing happens after that.
[ 0.818972][ T1] Run /init as init process
[ 5.851684][ T240] request_module: modprobe binfmt-4c46 cannot be processed, kmod busy with 50 threads for more than 5 seconds now
[ 5.851742][ T240] kworker/u33:18 (240) used greatest stack depth: 13584 bytes left
[ 5.860081][ T232] kworker/u33:16 (232) used greatest stack depth: 13072 bytes left
[ 5.863145][ T210] kworker/u35:13 (210) used greatest stack depth: 12928 bytes left
[ 5.865000][ T1] Failed to execute /init (error -8)
[ 5.868897][ T1] Run /sbin/init as init process
[ 10.891673][ T315] request_module: modprobe binfmt-4c46 cannot be processed, kmod busy with 50 threads for more than 5 seconds now
[ 10.894036][ T1] Starting init: /sbin/init exists but couldn't execute it (error -8)
[ 10.901455][ T1] Run /etc/init as init process
[ 10.903154][ T1] Run /bin/init as init process
[ 10.904747][ T1] Run /bin/sh as init process
[ 15.931679][ T367] request_module: modprobe binfmt-4c46 cannot be processed, kmod busy with 50 threads for more than 5 seconds now
[ 15.934689][ T1] Starting init: /bin/sh exists but couldn't execute it (error -8)