CURRENT crashes with nvidia GPU BLOB : vm_radix_insert: key 23c078 is already present

[O. Hartmann]

The most recent CURRENT doesn't work with the x11/nvidia-driver (which
is at 319.25 in the ports and 325.15 from nVidia).

After build- and installworld AND successfully rebuilding port
x11/nvidia-driver, the system crashes immediately after a reboot as
soon the kernel module nvidia.ko seems to get loaded (in my case, I
load nvidia.ko via /etc/rc.conf.local since the nVidia BLOB doesn't
load cleanly everytime when loaded from /boot/loader.conf).

The crash occurs on systems with default compilation options set while
building world and with settings like -O3 -march=native. It doesn't
matter. 

FreeBSD and the port x11/nvidia-driver has been compiled with CLANG.

Most recent FreeBSD revision still crashing is r254097.

When vmcore is saved, I always see something like

savecore: reboot after panic: vm_radix_insert: key 23c078 is already
present 


Does anyone has any idea what's going on?

Thanks for helping in advance,

Oliver
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