On October 25, 2019 6:48 AM, Michael Soegtrop wrote: >It has been reported in the past that antivirus software from Trend Micro >result in STATUS_GUARD_PAGE_VIOLATION in ntdll!RtlAllocateHeap ().
>See: >http://cygwin.1069669.n5.nabble.com/XWin-startup-crash-x86-64-Windows-10-td126544.html#a126561 On the advice of Jon Turney, I ran a "bt f" command after gdb caught the exception, and it appears that a Trend Micro dll (TmUmEvt64.dll) is where the error occurs: Thread 7 received signal ?, Unknown signal. [Switching to Thread 8736.0x2bf4] 0x0000000077947b97 in ntdll!RtlAllocateHeap () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt f #0 0x0000000077947b97 in ntdll!RtlAllocateHeap () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll No symbol table info available. #1 0x00000000779f233d in ntdll!EtwEventWriteStartScenario () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll No symbol table info available. #2 0x00000000779f3014 in ntdll!EtwEventWriteStartScenario () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll No symbol table info available. #3 0x0000000077947b9c in ntdll!RtlAllocateHeap () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll No symbol table info available. #4 0x000007fefd2e1c68 in TmmonDestoryAddonObject () from /cygdrive/c/Windows/system32/tmumh/20019/AddOn/8.20.0.1028/TmUmEvt64.dll No symbol table info available. #5 0x000007fefd2267ab in ?? () from /cygdrive/c/Windows/system32/tmumh/20019/AddOn/8.20.0.1028/TmUmEvt64.dll No symbol table info available. #6 0x000007fefd2a551a in TmmonDestoryAddonObject () from /cygdrive/c/Windows/system32/tmumh/20019/AddOn/8.20.0.1028/TmUmEvt64.dll This is not a Cygwin problem -- the solution is to be to add the Cygwin bin directory to Trend Micro's exception list. I will give this a try after I get our IT department to do this.
