[Bug 92258] Opening context menu in Steam could lead to radeon kernel module crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92258

--- Comment #1 from russianneuromancer at ya.ru ---
Created attachment 118908
  --> https://bugs.freedesktop.org/attachment.cgi?id=118908&action=edit
netconsole log

With Linux 4.3rc5 system became unresponsive after crash, there is even no
reaction when I press NumLock button (NumLock led doesn't change state) but
kernel continue to send backtraces via netconsole for some time. netconsole.log
is attached.
This crash happen only if Steam started on Radeon HD 6650M via DRI_PRIME.
This crash seems like could be triggered only by DRI3 and GLAMOR combination,
at least I was unable to easily reproduce it with DRI2&EXA and DRI3&EXA
combinations (DRI2&GLAMOR crash Xorg on Steam start, so I unable to test this
issue with this combination).

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