From: Alexey Izbyshev <izbyshev@ispras.ru>
To: cygwin@cygwin.com
Subject: Deadlock of the process tree when running make
Date: Fri, 08 Apr 2022 00:53:31 +0300 [thread overview]
Message-ID: <9388316255ada0e0fcb2d849cce5a894@ispras.ru> (raw)
Hi,
I'm using 32-bit Cygwin 3.3.4 on 64-bit Windows 10 21H2. When running
parallel make (for testing my project), very rarely I get the whole
process tree hanging at some seemingly random point. An example of such
a tree:
make-+-make-+-bash---find
| |-bash---find
| |-bash---find
| |-bash---find
| |-bash---find
| `-bash---javac
`-make-+-bash---bash---bash---readlink
`-bash---bash---bash-+-grep
`-grep
(In the above tree, javac is the zombie parent of a native javac, and
the latter doesn't exist at this point).
I got such hang two times while running make in a loop for several days.
ProcessHacker shows that all leaf processes are single-threaded and are
stuck on WaitForSingleObject().
I've skimmed git log of cygwin-3_3-branch after cygwin-3_3_4-release,
but couldn't find anything that seems definitely related.
Has anybody seen something like this?
Is there any way I can get useful data for diagnosing this hang from the
process tree that I currently have hanging (I'm going to keep it for
now)? Otherwise, what would be the best strategy?
Thanks,
Alexey
next reply other threads:[~2022-04-07 21:53 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-07 21:53 Alexey Izbyshev [this message]
2022-04-07 23:54 ` Brian Inglis
2022-04-08 8:42 ` Alexey Izbyshev
2022-04-08 17:04 ` Brian Inglis
2022-04-11 13:27 ` Alexey Izbyshev
2022-04-09 10:17 ` Takashi Yano
2022-04-09 11:00 ` Alexey Izbyshev
2022-04-09 11:02 ` Alexey Izbyshev
2022-04-09 11:46 ` Takashi Yano
2022-04-09 16:07 ` Alexey Izbyshev
2022-04-09 16:57 ` Takashi Yano
2022-04-09 17:23 ` Alexey Izbyshev
2022-04-09 17:54 ` Takashi Yano
2022-04-09 19:35 ` Alexey Izbyshev
2022-04-09 20:26 ` Alexey Izbyshev
2022-04-10 7:34 ` Takashi Yano
2022-04-10 12:13 ` Alexey Izbyshev
2022-04-10 20:49 ` Alexey Izbyshev
2022-04-11 8:35 ` Takashi Yano
2022-04-11 10:10 ` Alexey Izbyshev
2022-04-13 16:48 ` Alexey Izbyshev
2022-04-13 17:22 ` Takashi Yano
2022-04-13 17:27 ` Alexey Izbyshev
2022-04-13 23:17 ` Alexey Izbyshev
2022-04-16 9:39 ` Takashi Yano
2022-04-16 13:21 ` Alexey Izbyshev
2022-04-27 11:22 ` Takashi Yano
2022-04-27 12:19 ` Alexey Izbyshev
2022-04-11 5:23 ` Jeremy Drake
2022-04-11 8:36 ` Takashi Yano
2022-04-11 15:28 ` Alexey Izbyshev
2022-04-11 17:02 ` Jeremy Drake
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9388316255ada0e0fcb2d849cce5a894@ispras.ru \
--to=izbyshev@ispras.ru \
--cc=cygwin@cygwin.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).