Browser-laptop: crash dumps when detaching/attaching tabs

[kjozwiak]

Description

When attaching/detaching tabs on Linux, sometimes you'll see crash dumps being listed in the terminal, example:

Crash dump id: feb10969f7575ef9

These crashes will also appear in chrome://crashes:

• https://stats.brave.com/dashboard#crash/5abc606694910b001feaeff2
• https://stats.brave.com/dashboard#crash/5abc6067b25a14001f30e2b0
• https://stats.brave.com/dashboard#crash/5abc606ab25a14001f30e2bd

These crashes don't seem to cause any data/session loss, but they definitely happen pretty frequently that I think a investigation is warranted.

Steps to Reproduce

1. launch brave via the terminal
2. create a few tabs and visit several websites
3. start detaching/attaching tabs within the original window

You'll eventually start noticing crash dumps being listed in the terminal. After about 20 minutes of going through this, I managed to log ~35 crashes into chrome://crashes.

Actual result:

Expected result:

Shouldn't be crashing and creating crash dumps when tabs are being detached/attached.

Reproduces how often:

It's pretty easy to reproduce using the above STR. Simply create tabs in a single window, attach/detach several times and you'll eventually get into a state where you'll receive crash dumps when attaching/detaching tabs.

Brave Version

about:brave info:

Brave: 0.22.11 
V8: 6.5.254.41 
rev: 56de94731aa2aa9ab398ed928f68488f3ea5c11a 
libchromiumcontent: 65.0.3325.181
Muon: 5.1.2
OS Release: 4.13.0-26-generic 
Update Channel: Release 
OS Architecture: x64 
OS Platform: Linux 
Node.js: 7.9.0 
Brave Sync: v1.4.2 

Reproducible on current live release:

Yes, currently reproducible using 0.21.24 19c78a1 which is the current release.

Additional Information

Reproduced on Ubuntu 17.10 x64 & Mint 18 x64.

[bsclifton]

@kjozwiak does this still happen?

[kjozwiak]

@bsclifton I couldn't reproduce it with the 0.23.79. I tried detaching/attaching tabs for about 10min on Ubuntu 18.04 x64 and didn't receive any crash dumps.

[bsclifton]

I'll close this for now- but let's re-open if we experience it again. Thanks for re-testing, @kjozwiak 😄