Random Signal 11 Exception running under Cygwin

Random Signal 11 Exception running under Cygwin

[Michael Eager]

I'm getting occasional and apparently random Signal 11 (SEGV) exceptions 
while running under Cygwin.  

I'm doing a cross-build of Glibc and after running for a while (sometimes 
a long while) one of the programs executed by make gets an exception.
The stackdump looks like the following:

	Exception: STATUS_ACCESS_VIOLATION at eip=00000000
	eax=00000000 ebx=00000006 ecx=610956F8 edx=00000000 esi=610901EC edi=610901F4
	ebp=0241FE34 esp=0241FE18 program=C:\cygwin\bin\rm.exe
	cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
	Stack trace:
	Frame     Function  Args
	End of stack trace

Note that in this case, rm got the SEGV, other times it has been
cpp0, ld or mv.   

The problem is not reproducible -- running the same make a second time
will fail somewhere else.  I don't have copies of the stackdump from other
executions at hand, so I can't compare, but in each of them the stack
trace is empty.

Any suggestions on (1) what might be causing this, (2) how I can avoid
the problem, and/or (3) how I can fix it?

BTW, I'm running on NT2K with the latest version of Cygwin.

-- 
Michael Eager	 Eager Consulting     eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077

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Re: Random Signal 11 Exception running under Cygwin

[Andrew Markebo]

Just a quick thought.. I had similar problems on computer with bad
memory when compiling advanced files (linux kernel :-) for a long
time, dig up memtest86, and run it (create a boot floppy and boot) on
your computer to doublecheck the memory.

Win2k, Linux normal usage, worked well, it was only during kernel
kompilation I had problems.. 

        /Andy

/ Michael Eager <eager@eagercon.com> wrote:
| I'm getting occasional and apparently random Signal 11 (SEGV) exceptions 
| while running under Cygwin.  

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Re: Random Signal 11 Exception running under Cygwin

[Michael Eager]

Andrew Markebo wrote:
> 
> Just a quick thought.. I had similar problems on computer with bad
> memory when compiling advanced files (linux kernel :-) for a long
> time, dig up memtest86, and run it (create a boot floppy and boot) on
> your computer to doublecheck the memory.
> 
> Win2k, Linux normal usage, worked well, it was only during kernel
> kompilation I had problems..

Thanks.  I'm getting the same behavior on two different systems.

I'll take your advice about running memtest86, but it would be odd
that two systems would have bad memory that only shows up in Cygwin.

--
Michael Eager     eager@mvista.com	408-328-8426	
MontaVista Software, Inc. 1237 E. Arques Ave., Sunnyvale, CA  94085

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