[Nouveau] [Bug 57350] [nouveau, linux-3.7-rc] Broken cursor and kernel log swamped with trapped reads/writes from BAR/PFIFO_READ/FB

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57350

--- Comment #31 from Bruno <bonbons67 at internet.lu> ---
I do get lock-ups with 3.8.4 and 3.9-rc4.

3.9-rc4 does not have the corrupted cursor anymore but still has lots of
trapped reads or writes.

Kernel is still alive at lockup time and kernel log reports
...
[  521.627844] nouveau E[     PFB][0000:02:00.0] trapped read at 0x000040fe2c
on channel 0x0000fee0 [unknown] BAR/PFIFO_READ/FB reason: PAGE_NOT_PRESENT
[  521.627864] nouveau E[     PFB][0000:02:00.0] trapped read at 0x000040fe34
on channel 0x0000fee0 [unknown] BAR/PFIFO_READ/FB reason: PAGE_NOT_PRESENT
[  521.627882] nouveau E[     PFB][0000:02:00.0] trapped read at 0x000040fe3c
on channel 0x0000fee0 [unknown] BAR/PFIFO_READ/FB reason: PAGE_NOT_PRESENT
[  521.630177] nouveau E[     PFB][0000:02:00.0] trapped write at 0x00004025c0
on channel 0x0000fee0 [unknown] BAR/PFIFO_WRITE/FB reason: PAGE_NOT_PRESENT
[  521.632255] nouveau E[   PFIFO][0000:02:00.0] still angry after 101 spins,
halt
[  521.632273] nouveau E[     PFB][0000:02:00.0] trapped read at 0x00004025c0
on channel 0x0000fee0 [unknown] BAR/PFIFO_READ/FB reason: PAGE_NOT_PRESENT
[  524.640022] [sched_delayed] sched: RT throttling activated

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