From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Andres Freund <andres(at)anarazel(dot)de> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: OK, so culicidae is *still* broken |
Date: | 2017-04-15 21:34:06 |
Message-ID: | 4180.1492292046@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2017-04-15 17:24:54 -0400, Tom Lane wrote:
>> I wonder whether we could work around that by just destroying the created
>> process and trying again if we get a collision. It'd be a tad
>> inefficient, but hopefully collisions wouldn't happen often enough to be a
>> big problem.
> That might work, although it's obviously not pretty. We could also just
> default to some out-of-the-way address for MapViewOfFileEx, that might
> also work.
Could be. Does Microsoft publish any documentation about the range of
addresses their ASLR uses?
Obviously, any such fix would be a lot more likely to be reliable in
64-bit machines. There's probably not enough daylight to be sure of
making it work in 32-bit Windows, so I suspect we'd need some retry
logic anyway for that case.
regards, tom lane
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