Make task_kill.py try to dump stacks of left-over/hanging processes

Make task_kill.py try to dump stacks of left-over/hanging processes

R=vegorov@google.com

Committed: https://github.com/dart-lang/sdk/commit/8347d26d7e419aff46c646acf44fd6da1cbda2ec

[kustermann, 2017-01-04 15:36:23]

kustermann@google.com changed reviewers:
+ vegorov@google.com, whesse@google.com

[Vyacheslav Egorov (Google), 2017-01-04 15:59:28]

lgtm

[kustermann, 2017-01-04 16:00:02]

Description was changed from

==========
Make task_kill.py try to dump stacks of left-over/hanging processes
==========

to

==========
Make task_kill.py try to dump stacks of left-over/hanging processes

R=vegorov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/8347d26d7e419aff46c646acf44fd6da1cbda2ec
==========

[kustermann, 2017-01-04 16:00:04]

Committed patchset #1 (id:1) manually as
8347d26d7e419aff46c646acf44fd6da1cbda2ec (presubmit successful).

[Bill Hesse, 2017-01-04 16:03:49]

lgtm

[Florian Schneider, 2017-01-04 17:53:55]

fschneider@google.com changed reviewers:
+ fschneider@google.com

[Florian Schneider, 2017-01-04 17:53:55]

Thanks!

[kustermann, 2017-01-04 17:55:23]

@fschnedier:

It actually revealed the same TC malloc deadlock as I discovered and described
at https://github.com/dart-lang/sdk/issues/28246. Just not on fork().

See:

https://build.chromium.org/p/client.dart/builders/vm-linux-release-simarm64-b...