[Nouveau] [Bug 69952] [NVAA] Xorg crash+restart after glxgears on 3.12-rc2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69952

--- Comment #5 from dirkneukirchen at web.de ---
Created attachment 90379
  --> https://bugs.freedesktop.org/attachment.cgi?id=90379&action=edit
Same error on kernel 3.13-rc2

Kernel 3.13-rc2 has it too 

complete log attached with nouveau trace enabled; possibly interesting snippets
(these were seen previously too):
[   47.726763] nouveau E[   PFIFO][0000:02:00.0] DMA_PUSHER - ch 2 [Xorg[2244]]
get 0x0020016b30 put 0x0020016b4c ib_get 0x0000024b ib_put 0x000002a9 state
0x80000030 (err: INVALID_CMD) push 0x00400040
[   47.810523] nouveau E[  PGRAPH][0000:02:00.0] DATA_ERROR INVALID_VALUE
[   47.810545] nouveau E[  PGRAPH][0000:02:00.0]  DATA_ERROR
[   47.810565] nouveau E[  PGRAPH][0000:02:00.0] ch 2 [0x0007b45000 Xorg[2244]]
subc 2 class 0x502d mthd 0x08d4 data 0x00144230
[  131.224959] nouveau E[   PFIFO][0000:02:00.0] DMA_PUSHER - ch 2 [Xorg[2244]]
get 0x002002b068 put 0x002002b11c ib_get 0x0000016c ib_put 0x000001bb state
0x800048e0 (err: INVALID_CMD) push 0x00400040
[  131.392877] nouveau E[  PGRAPH][0000:02:00.0] DATA_ERROR INVALID_VALUE
[  131.392898] nouveau E[  PGRAPH][0000:02:00.0]  DATA_ERROR
[  131.392918] nouveau E[  PGRAPH][0000:02:00.0] ch 2 [0x0007b45000 Xorg[2244]]
subc 2 class 0x502d mthd 0x08dc data 0x00144230


[  162.340013] nouveau E[Xorg[2244]] failed to idle channel 0xcccc0000
[Xorg[2244]]
[  177.340015] nouveau E[Xorg[2244]] failed to idle channel 0xcccc0000
[Xorg[2244]]
[  207.520133] nouveau E[     PFB][0000:02:00.0] trapped read at 0x0020012020
on channel 0x0000797f [unknown] SEMAPHORE_BG/PFIFO_READ/00 reason:
PAGE_NOT_PRESENT

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