linux-kernel - Double fault crash on Linux-5.1.21

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Message-ID: <CAJM9R-JLiqRKcmyHh9ad8fJmqxo=E_Hf9soCEiLMniDpG5uK3Q@mail.gmail.com>
Date:   Tue, 3 Dec 2019 13:35:47 +0200
From:   Angel Shtilianov <kernel@...p.com>
To:     linux-kernel@...r.kernel.org
Subject: Double fault crash on Linux-5.1.21

Hi there,
I have a very strange crash with kernel 5.1.21
This has happened several times with kernel 5.x, but this time I have
collected a usable crash dump.
The process in question seems to be dying - in its task_struct it has set:
  exit_signal = 17,
  pdeath_signal = 0,
Any ideas how to debug it are highly appreciated. Please, help.
Here is the complete crash backtrace:
https://pastebin.com/FF3rn1CZ

--
Best regards,
Angel Shtilianov