On 31/07/15 17:43, Bryan O'Donoghue wrote:
On 31/07/15 17:36, Ilia Mirkin wrote:
Do you have a reproducible way of achieving the multiple buffer on
validation list thing?
Reliable enough. Start Chrome, then get Chrome to open a menu on top of
it's own screen - for example click the top right menu bar - the thing
with the three horizontal bars, scroll down to 'recent tabs' and let the
mouse hover.
You'll get a menu that opens up over the main chrome screen and at that
point you'll also get a 'multiple instances of buffer'
Basically drawing one window on top of another inside of the same Chrome
tab.
I guess the same PID is mapping the same piece of memory twice because
if I open a seperate Chrome window (which will have a seperate PID) and
drag one window over the other we don't see a repeat.
If it helps
deckard@aineko:~$ dmesg | tail -n 5
[ 6900.249427] nouveau E[chrome[3176]] multiple instances of buffer 456
on validation list
[ 6920.992475] nouveau E[chrome[3176]] multiple instances of buffer 458
on validation list
[ 6934.277352] nouveau E[chrome[3176]] multiple instances of buffer 458
on validation list
[ 6994.303600] nouveau E[chrome[3176]] multiple instances of buffer 458
on validation list
[ 7067.436049] nouveau E[chrome[3176]] multiple instances of buffer 456
on validation list
deckard@aineko:~$ ps -ax | grep chrome | grep 3176
3176 pts/6 Sl+ 0:29 /opt/google/chrome/chrome --type=gpu-process
--channel=3143.0.1295591 ives-passed-by-fd --v8-snapshot-passed-by-fd
--supports-dual-gpus=false --gpu-driver-bug-workarounds=2,29,32,45,55,57
--disable-accelerated-video-decode --gpu-vendor-id=0x10de
--gpu-device-id=0x0fe9 --gpu-driver-vendor --gpu-driver-version
--v8-natives-passed-by-fd --v8-snapshot-passed-by-fd
What GPU do you have? (Looking for a codename,
not a marketing name... lspci should have it... GFxxx or GKxxx or
01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT
750M Mac Edition] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Apple Inc. Device 0130
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at c0000000 (32-bit, non-prefetchable) [size=16M]
Memory at 80000000 (64-bit, prefetchable) [size=256M]
Memory at 90000000 (64-bit, prefetchable) [size=32M]
I/O ports at 1000 [size=128]
Expansion ROM at c1000000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [b4] Vendor Specific Information: Len=14 <?>
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [420] Advanced Error Reporting
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1
Len=024 <?>
Capabilities: [900] #19
Kernel driver in use: nouveau
Macbook pro retina 2014
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