Re: SIGBUS + coredump

[Martin Husemann <martin%duskware.de@localhost>]

On Thu, Jan 17, 2019 at 09:52:17PM +0100, Kamil Rytarowski wrote:
> The problem is that when we are in coredump_getseghdrs_elf64() and call
> copyin_proc() -> copyin_vmspace() -> copyin() we trigger a trap that is
> translated through trap() -> ... -> genfs_getpages() to EINVAL as there
> are no pages assigned to a mamory address.

This is normal behaviour and uvm should assign an empty page at that
point. Why is that not working - i.e. what is special about this situation?

Martin