From: Thomas Wolff <towo@towo.net>
To: cygwin@cygwin.com
Subject: Re: /dev/p* causes shell crash in i686
Date: Thu, 10 Sep 2020 21:41:25 +0200 [thread overview]
Message-ID: <df8c07c7-c6df-62ef-5d5f-8c1db2ea3623@towo.net> (raw)
In-Reply-To: <73a5cec3-1805-d5b3-4c08-d78d5b787b50@cornell.edu>
Am 10.09.2020 um 21:38 schrieb Ken Brown via Cygwin:
> On 9/10/2020 3:31 PM, Thomas Wolff wrote:
>> Am 10.09.2020 um 21:19 schrieb Ken Brown via Cygwin:
>>> On 9/10/2020 3:15 PM, Andrew Schulman via Cygwin wrote:
>>>>> On Sep 9 08:08, Andrew Schulman via Cygwin wrote:
>>>>>> Here's a strange one. In bash in i686, try to run:
>>>>>>
>>>>>> ls /dev/ptmx
>>>>>>
>>>>>> I only get about as far as:
>>>>>>
>>>>>> ls /dev/p
>>>>>>
>>>>>> and then my terminal window vanishes. This happens:
>>>>>>
>>>>>> * In fish or bash.
>>>>>> * On two different hosts that I've tried.
>>>>>> * In mintty or a system terminal. In the system terminal,
>>>>>> sometimes the
>>>>>> command works normally the first time, but fails the 2nd time; or
>>>>>> I have to
>>>>>> press <TAB> after `ls /dev/p`, then the terminal vanishes.
>>>>>> * With other commands that treat their arguments as files, not
>>>>>> text. So for
>>>>>> example, I can't finish typing `cat /dev/ptmx` or `test -r
>>>>>> /dev/ptmx`
>>>>>> before the terminal window vanishes, but `echo /dev/ptmx` works
>>>>>> normally.
>>>>>>
>>>>>> It doesn't happen:
>>>>>>
>>>>>> * In x86_64 - only i686.
>>>>>> * In scripts - only interactively.
>>>>>>
>>>>>> Is anyone else able to reproduce this? I've tried to capture an
>>>>>> strace log,
>>>>>> but I've failed so far. The strace seems to stop the crash. Still
>>>>>> trying.
>>>>>>
>>>>>> I thought this could be a BLODA problem, but the two hosts I
>>>>>> tried are
>>>>>> running different virus scanners (McAfee and Windows Defender).
>>>>>>
>>>>>> Cygwin 3.1.7-1, all packages up-to-date. Output of cygcheck -svr
>>>>>> attached.
>>>>>>
>>>>>> Andrew
>>>>>
>>>>> I think I fixed it. I just uploaded new developer snapshots to
>>>>> https://cygwin.com/snapshots/ Please give them a try.
>>>>
>>>> When I substitute cygwin1-20090909.dll for cygwin1.dll in i686, I
>>>> can't run
>>>> any commands. They all give "The application was unable to start
>>>> correctly
>>>> (0xc0000022)". Anything different I should be doing?
>>>
>>> Check the permissions on cygwin1-20090909.dll. Is it executable?
>> cygwin1-20090909.dll is 11 years old. Did you download the latest
>> snapshot?
>
> I'm sure that was just a typo. The 11-year-old one is not even
> available on the snapshot page.
He could have a (very) old download sitting around somewhere and
confused the download location. Just asked to make sure...
> In any case, I shouldn't have mentioned that in my reply. I should
> have told him to check the permissions on the (new) cygwin1.dll.
>
> 0xc0000022 is the NT status code STATUS_ACCESS_DENIED, so it's likely
> a permissions problem.
>
> Ken
> --
> Problem reports: https://cygwin.com/problems.html
> FAQ: https://cygwin.com/faq/
> Documentation: https://cygwin.com/docs.html
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next prev parent reply other threads:[~2020-09-10 19:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-09 12:08 Andrew Schulman
2020-09-09 14:54 ` Eliot Moss
2020-09-09 21:49 ` Corinna Vinschen
2020-09-10 19:15 ` Andrew Schulman
2020-09-10 19:19 ` Ken Brown
2020-09-10 19:31 ` Thomas Wolff
2020-09-10 19:38 ` Ken Brown
2020-09-10 19:41 ` Thomas Wolff [this message]
2020-09-10 19:44 ` Brian Inglis
2020-09-10 19:38 ` Brian Inglis
2020-09-10 22:37 ` Andrew Schulman
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