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[Bug 1558764] [NEW] Sysrq trigger g cause system hang on Ubuntu 15.10

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1558764@xxxxxxxxxxxxxxxxxx>
Date: Wed, 23 Mar 2016 19:52:16 -0000
Reply-to: Bug 1558764 <1558764@xxxxxxxxxxxxxxxxxx>
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You have been subscribed to a public bug:

I are using kgdb to debug kernel driver. The break point and sysrq work
fine on Ubuntu 14.04. But when I upgrade Ubuntu from 14.04 to 15.10, the
sysrq trigger g (alt+sysrq+g) doesn't make gdb break and system hangs.
It is a regression. The issue only happens after kernel booting up. It
is OK during kernel booting.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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Sysrq trigger g cause system hang on Ubuntu 15.10
https://bugs.launchpad.net/bugs/1558764
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