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Date:	Mon, 25 Jun 2012 18:28:04 +0200
From:	marco atzeri <marco DOT atzeri AT gmail DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: crash on latest cygwin snapshot
References:	<4FE786DA DOT 2050208 AT gmail DOT com> <20120625043110 DOT GA28607 AT ednor DOT casa DOT cgf DOT cx> <4FE81478 DOT 8030508 AT gmail DOT com> <20120625080550 DOT GC2976 AT calimero DOT vinschen DOT de> <4FE82361 DOT 8040908 AT gmail DOT com> <20120625090029 DOT GE2321 AT calimero DOT vinschen DOT de> <4FE83122 DOT 8020406 AT gmail DOT com> <4FE85226 DOT 5020804 AT gmail DOT com> <20120625144551 DOT GA4244 AT ednor DOT casa DOT cgf DOT cx> <4FE87D29 DOT 7080906 AT gmail DOT com> <20120625152916 DOT GA9053 AT ednor DOT casa DOT cgf DOT cx>
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On 6/25/2012 5:29 PM, Christopher Faylor wrote:
> On Mon, Jun 25, 2012 at 05:00:57PM +0200, marco atzeri wrote:
>> On 6/25/2012 4:45 PM, Christopher Faylor wrote:
>>> On Mon, Jun 25, 2012 at 01:57:26PM +0200, marco atzeri wrote:
>>>> On 6/25/2012 11:36 AM, marco atzeri wrote:
>>>>> On 6/25/2012 11:00 AM, Corinna Vinschen wrote:
>>>>>> On Jun 25 10:37, marco atzeri wrote:
>>>>>>>
>>>>>>> A normal exception should kill just the running process, while
>>>>>>> I see that  xprobe_comp, bash, mintty are killed and
>>>>>>> also others bash and mintty processes are taking down.
>>>>>>
>>>>>> Really all processes or just all processes in the same terminal window?
>>>>>
>>>>> all processes in all the available terminal windows.
>>>>> 3 mintty and 3 bash are taken down and they were indepedently
>>>>> created by the start menu
>>>>>
>>>>>>
>>>>>> Corinna
>>>>>>
>>>>>
>>>>> I will check if today cgf's changeset make any difference
>>>>>
>>>>> Regards
>>>>> Marco
>>>>>
>>>>>
>>>> hi Corinna,
>>>> no difference. It takes down everything
>>>>
>>>> but you are right about mintty, it is crashing and the stackdump
>>>> are located at c:\windows\SySWOW64, I only noticed with procmon.
>>>>
>>>> ---------------------------------------------------------------------
>>>> Exception: STATUS_ACCESS_VIOLATION at eip=610CE726
>>>> eax=610CE710 ebx=0000010C ecx=777B0000 edx=0008E3C8 esi=0028A5B8
>>>> edi=8005A088
>>>> ebp=0028A468 esp=0028A450 program=E:\cygwin\bin\mintty.exe, pid 6652,
>>>> thread main
>>>> cs=0023 ds=002B es=002B fs=0053 gs=002B ss=002B
>>>> Stack trace:
>>>> Frame     Function  Args
>>>> 0028A468  610CE726  (8004EF58, 0028A5B8, E65DA9C7, 231FFA3E)
>>>> 0028A488  610D05CE  (0028A5B8, 0028A648, 0028A540, 0028A520)
>>>> 0028A618  610D146A  (00000002, 0028A648, 0028A540, 0028A520)
>>>> 24479433 [main] mintty 6652 exception::handle: Exception:
>>>> STATUS_ACCESS_VIOLATION
>>>> 24495658 [main] mintty 6652 exception::handle: Error while dumping state
>>>> (probably corrupted stack)
>>>> ----------------------------------------------------------------------
>>>>
>>>> $ addr2line.exe -e cygwin1.dll 610CE726
>>>> /pub/cygwin/cvs/src_new/winsup/cygwin/select.cc:687
>>>>
>>>> $ addr2line.exe -e cygwin1.dll 610D05CE
>>>> /pub/cygwin/cvs/src_new/winsup/cygwin/select.cc:243
>>>>
>>>> $ addr2line.exe -e cygwin1.dll 610D146A
>>>> /pub/cygwin/cvs/src_new/winsup/cygwin/select.cc:252
>>>
>>> How long did this take to crash mintty?
>>>
>>> cgf
>>>
>>
>>
>> 7 sec on my slow PC.
>>  From procmon I saw that xprobe_comp and the shells it reises continue
>> to run for a while and only after they close.
>>
>> on 20120611 the full successful run is 45 sec.
>
> I let my run on 20120611 go for more than that.  The system eventually
> became unresponsive and I had to power cycle it.  Probably I could have
> rebooted via Start if I'd been more patient, though.
>
> I have another vague idea about this problem and will be checking in
> another change soon.
>
> cgf
>

I straced mintty and uploaded the first portion, 10Mb, on
http://matzeri.altervista.org/works/atlas/

the remaining 320 Mb have no further trace of mintty

Regards
Marco

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