I'm seeing something similar with Mnemosyne, which uses QtWebEngine, which itself appears to use code from Chromium.
``` python3: ../nouveau/pushbuf.c:723: nouveau_pushbuf_data: Assertion `kref' failed. Received signal 6 #0 0x7f0bdb1fb9ee <unknown> #1 0x7f0bdb1fbb00 <unknown> #2 0x7f0bdb1fc137 <unknown> #3 0x7f0be3602100 <unknown> #4 0x7f0be3602077 gsignal #5 0x7f0be35e3535 abort #6 0x7f0be35e340f <unknown> #7 0x7f0be35f3142 __assert_fail #8 0x7f0bc43f146f nouveau_pushbuf_data #9 0x7f0bc43f13d3 nouveau_pushbuf_data #10 0x7f0bc43f14ff <unknown> #11 0x7f0bc43f194f <unknown> #12 0x7f0bc43f2540 nouveau_pushbuf_kick #13 0x7f0bc4c246c6 <unknown> #14 0x7f0bc486c38e <unknown> #15 0x7f0bc486c400 <unknown> #16 0x7f0bd8e4713b <unknown> #17 0x7f0bd8e472a6 <unknown> #18 0x7f0bdfd1af4b QObject::event() #19 0x7f0be06eec6b QWidget::event() ```
Running Ubuntu 18.10 with kernel 4.18.0-15-generic (module srcversion is 98986FAF1F2E3BC89E0DF0E).
I'm seeing something similar with Mnemosyne, which uses QtWebEngine, which itself appears to use code from Chromium.
``` pushbuf. c:723: nouveau_ pushbuf_ data: Assertion `kref' failed. pushbuf_ data pushbuf_ data pushbuf_ kick
python3: ../nouveau/
Received signal 6
#0 0x7f0bdb1fb9ee <unknown>
#1 0x7f0bdb1fbb00 <unknown>
#2 0x7f0bdb1fc137 <unknown>
#3 0x7f0be3602100 <unknown>
#4 0x7f0be3602077 gsignal
#5 0x7f0be35e3535 abort
#6 0x7f0be35e340f <unknown>
#7 0x7f0be35f3142 __assert_fail
#8 0x7f0bc43f146f nouveau_
#9 0x7f0bc43f13d3 nouveau_
#10 0x7f0bc43f14ff <unknown>
#11 0x7f0bc43f194f <unknown>
#12 0x7f0bc43f2540 nouveau_
#13 0x7f0bc4c246c6 <unknown>
#14 0x7f0bc486c38e <unknown>
#15 0x7f0bc486c400 <unknown>
#16 0x7f0bd8e4713b <unknown>
#17 0x7f0bd8e472a6 <unknown>
#18 0x7f0bdfd1af4b QObject::event()
#19 0x7f0be06eec6b QWidget::event()
```
Running Ubuntu 18.10 with kernel 4.18.0-15-generic (module srcversion is 98986FAF1F2E3BC 89E0DF0E) .