Hi,
we've received a bug report about 4.4.70 kernel showing the hang up at
boot. And, this turned out to be a regression in nouveau driver:
https://bugzilla.suse.com/show_bug.cgi?id=1043467
I provided a test kernel reverting the last five commits about
nouveau below, and it was confirmed to work. But still not figured
out which one actually breaks.
e4add1cf6b4154804350c3385c6d447cff3570de
drm/nouveau/tmr: handle races with hw when updating the next alarm time
commit 1b0f84380b10ee97f7d2dd191294de9017e94d1d upstream.
9d78e40f5f41ad1db1849f8d15acbda99d0871b4
drm/nouveau/tmr: avoid processing completed alarms when adding a new one
commit 330bdf62fe6a6c5b99a647f7bf7157107c9348b3 upstream.
5e07724c28f4e06fe42dd5b58bb6f9dd56510567
drm/nouveau/tmr: fix corruption of the pending list when rescheduling an
alarm
commit 9fc64667ee48c9a25e7dca1a6bcb6906fec5bcc5 upstream.
27f82df2f02688c51d2c1d9f624cc0c5b8a62661
drm/nouveau/tmr: ack interrupt before processing alarms
commit 3733bd8b407211739e72d051e5f30ad82a52c4bc upstream.
3819271d8a5f4c6e0c8f71c339e44e2efbe40710
drm/nouveau/therm: remove ineffective workarounds for alarm bugs
commit e4311ee51d1e2676001b2d8fcefd92bdd79aad85 upstream.
Ben, is this a known problem? Or is there any fixup?
The kernel back trace found in the bugzilla report shows the issue in
nvkm_timer_alarm_trigger(), at least.
thanks,
Takashi
