Corrupt Cygwin64 install?

Mike McCarty
Mon Sep 26 21:09:00 GMT 2016

I finally got back to looking at this...

I reinstalled cygwin64 from scratch.  Removed all of my .*rc files and
other customizations.  No change.

So I decided to run it in the debugger:

$ gdb /usr/bin/emacs-nox.exe
(gdb) r
Starting program: /usr/bin/emacs-nox.exe
[New Thread 9896.0x2308]
[New Thread 9896.0x40c]
[New Thread 9896.0x2a8c]
[New Thread 9896.0x20f4]
[New Thread 9896.0x27bc]
[New Thread 9896.0x488]
[New Thread 9896.0x1ae0]
[Thread 9896.0x2a8c exited with code 0]
[New Thread 9896.0x2b54]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 9896.0x2b54]
0x000007fefcb07497 in TmmonDestoryAddonObject () from

(gdb) where
#0  0x000007fefcb07497 in TmmonDestoryAddonObject () from
#1  0x000007fefcae4a55 in ?? () from
#2  0x000007fefcae3ffb in ?? () from
#3  0x000007fefcae3b88 in ?? () from
#4  0x000007fefcaea4d3 in ?? () from
#5  0x000007fefcaf6b5a in ?? () from
#6  0x00000000748960f6 in ?? () from
#7  0x0000000074933ac7 in tmmon64!NullExport () from
#8  0x00000000749337ca in tmmon64!NullExport () from
#9  0x00000000748972dd in ?? () from
#10 0x00000001800b2a84 in CreateMutexW () from /usr/bin/cygwin1.dll
#11 0x000000018004415b in init_cygheap::add_tls(_cygtls*) () from
#12 0x00000001800bd80c in pthread_wrapper () from /usr/bin/cygwin1.dll
#13 0x000000018004577b in _cygtls::call2(unsigned int (*)(void*,
void*), void*, void*) () from /usr/bin/cygwin1.dll
#14 0x00000001800457e4 in _cygtls::call(unsigned int (*)(void*,
void*), void*) () from /usr/bin/cygwin1.dll
#15 0x0000000076dc59bd in KERNEL32!BaseThreadInitThunk () from
#16 0x0000000076efa2e1 in ntdll!RtlUserThreadStart () from
#17 0x0000000000000000 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

tmmon64.dll is a TrendMicro OfficeScan dll.  After talking my sysadmin
into disabling OfficeScan on my machine temporarily, the crash goes
away.  Adding cygwin to the exclusion list doesn't help here (I tried
it) I think because this is a "real-time monitor", not the file scan
that the exclusion list generally applies to.

Has anybody else had a similar experience with TrendMicro AV software?
 My IT dept. will not allow me to disable it entirely...

Problem reports:
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