On Tue, 8 Aug 2023, Florian Fainelli wrote: > Now GDB tells me the faulting instruction is the following: > > #0 0x77dcf190 in _dlstart_data () from target/lib/ld-musl-mipsn32el.so.1 > #1 0x77e28bfc in ?? () from target/lib/ld-musl-mipsn32el.so.1 > (gdb) display/i $pc > 2: x/i $pc > => 0x77dcf190 <_dlstart_data+17976>: dclz v1,a0 So this is a MIPS64r1 instruction and Cobalt Qube2 is what, MIPS III? It looks like you've got a broken binary that expects a higher ISA version than what your hardware supports. Assuming that you have built it with the correct compilation options (which I take it is the case given that your installation mostly works), you need to sort it out with the supplier of your software. Perhaps there's inline assembly there that has been guarded incorrectly (though it shouldn't be necessary as GCC is itself able to produce DCLZ where suitable). HTH, Maciej