On 19.01.2019 18:32, Jason Thorpe wrote: > > >> On Jan 19, 2019, at 8:55 AM, David Holland <dholland-tech%netbsd.org@localhost> wrote: >> >> That's equivalent to writing out zeros (but more efficient) -- I would >> say the page shouldn't appear in the dump at all on the grounds that >> it doesn't actually exist. >> >> Whether it's ok to have an empty segment, I dunno. See if gdb chokes >> on it :-) > > Hm, then perhaps I'm misremembering how this is supposed to be represented in the core. The issue is that there *is* a mapping at the virtual address, but that fault can't be serviced. Making it appear as zeros or ZFOD gives the wrong impression to the person doing the debugging. > > -- thorpej > I will skip these inaccessible segments (mappings) in a core(5) file generator. From a debugger point of view, skipping it is perhaps more verbose that it's not accessible.
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