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Re: Apparent rebase issue
- From: Eliot Moss <moss at cs dot umass dot edu>
- To: cygwin at cygwin dot com
- Date: Fri, 17 Feb 2017 21:33:26 -0500
- Subject: Re: Apparent rebase issue
- Authentication-results: sourceware.org; auth=none
- References: <c03fd6f1-9440-f66d-a795-06a9c253d03a@cs.umass.edu> <87o9y0u58o.fsf@Rainer.invalid>
- Reply-to: moss at cs dot umass dot edu
On 2/17/2017 11:55 AM, Achim Gratz wrote:
Eliot Moss writes:
You may simply have run out of address space in your 32bit installation,
although the collision seems to happen at a relatively high address,
which might indicate BLODA.
C:\cygwin\bin\cygXt-6.dll: Loaded to different address:
parent(0x65E30000) != child(0x1C00000)
2 [main] emacs-X11 7808 child_info_fork::abort:
C:\cygwin\bin\cygXt-6.dll: Loaded to different address:
parent(0x65E30000) != child(0x1B50000)
What does /proc/7808/maps (replace 7808 with the pid of the process that
trgiggers the messages) say about the occupation of the memory region in
question?
Well, unsurprisingly it says that cygXt-6.dll has a section there. Naturally
I can't check the child since it is gone.
I see that Windows has things loaded at various places, such as:
SysWOW64/glu32.dll at 000D0000
System32/locale.nls at 01B50000
SysWOW64/ddraw.dll at 03520000
cygwin dlls start at 3E940000
System32/wow64.dll at 54140000
System32/wow64win.dll at 541A0000
SysWOW64/opengl32.dll at 65FC0000
The highest cygwin dll is cygEGL-1.dll at 6FFD0000 ending at 6FFF8000.
So from 3E940000 upwards, cygwin and Windows dlls seem to mix. What would
BLODA look like in the map? Would it help to post a map here? It's pretty
big.
If I have more or less run out of space, I suppose there are two fixes:
1) Drop some things from my installation to reduce my use of the 32-bit
address space (which I might need to do anyway at this point to allow all
programs to run reliably).
2) Switch to use cygwin64 for this program. (I have not made the 64-bit
installation my "main" one that I use because not all the programs I use
regularly have been ported to it, but I do have it running in parallel and
talking to the 32-bit X installation.)
Thoughts as to the next step?
Regards - Eliot
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