On Tue, Oct 13, 2020 at 03:43:59PM -0700, Dave Hansen wrote: > On 10/13/20 3:31 PM, Brown, Len wrote: > > vmalloc() does not fail, and does not return an error, and so there is no > > concept > > of returning a signal. > > Well, the order-0 allocations are no-fail, as are the vmalloc kernel > structures and the page tables that might have to be allocated. But, > that's not guaranteed to be in place *forever*. I think we still need > to check for and handle allocation failures, even if they're not known > to be possible today.
Quite, on top of that, we could run out of vmalloc space (unlikely, but sitll). You really have to deal with vmalloc() failing.
