I’m building the 3.18.44 linux kernel that comes with firmware release 9.1 in a custom yocto build. We’ve just updated our yocto layers to run the sumo release (we used pyro before). Now, when we build the kernel, it hangs during boot, freezes for a few seconds and then resets.
Most of the time this happens relatively early in the boot process, after about 5 secs, but sometimes I get all the way to a login shell before it freezes. The kernel sources and config is exactly the same in both builds, just that the build system has been updated.
I don’t get any printouts about panic or anything, it just freezes and resets. I tried comparing the logs from a working kernel and one that freezes, and they are almost identical and gives no clues of what might be wrong.
Has anyone else seen this or something similar?