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Date: Fri, 18 Oct 2002 15:28:26 -0400
From: Jason Tishler <jason AT tishler DOT net>
Subject: Re: latest cvs fork problems
In-reply-to: <20021018142340.GA8353@redhat.com>
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References: <20021017181218 DOT GA320 AT cisco DOT com> <20021017182952 DOT GA7865 AT redhat DOT com>
 <20021018122321 DOT GA1768 AT tishler DOT net> <20021018142340 DOT GA8353 AT redhat DOT com>

Chris,

On Fri, Oct 18, 2002 at 10:23:40AM -0400, Christopher Faylor wrote:
> I still can't duplicate this.

A binary search of the recent snapshots indicates that 2002-Oct-14 is OK
but 2002-Oct-15 is not.  So, I think that we can conclude that one of
the following changes is the culprit:

    http://cygwin.com/snapshots/winsup-changelog-20021014-20021015

Maybe the following strace snippet will ring a bell?

  106 1294484 [main] exim-4.10-1 1120 fixup_mmaps_after_fork: recreate_mmaps_after_fork, mmapped_areas 0xA041CC0
   94 1294578 [main] exim-4.10-1 1120 fixup_mmaps_after_fork: fd -1, h 230, access 1, offset 0, size 327680, address 0x1AF0000
  117 1294695 [main] exim-4.10-1 1120 fhandler_disk_file::fixup_mmap_after_fork: TTTTT: base = 0, address = 1AF0000
  816 1295511 [sig] exim-4.10-1 1120 wait_sig: sigcatch_nonmain 0x2B8, sigcatch_main 0x2BC
  341 1295852 [sig] exim-4.10-1 1120 wait_sig: Ready.  dwProcessid 1120
-1063 1294789 [main] exim-4.10-1 1120 fixup_mmaps_after_fork: base address fails to match requested address 0x1AF0000

Note that I added an extra debug_printf() to
fhandler_disk_file::fixup_mmap_after_fork().

Thanks,
Jason

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