Comment 4 for bug 1776887

Sorry, it's not convenient for me to test Ubuntu at the moment.

I abuse the above instructions to assert that this bug is confirmed, citing the URLs provided. (1: The patch+description linked for kernel 4.17, 2: the lack of fix evidenced in the link for kernel 4.15.0-24.26).

I appeal to authority based on me being the author of the fix, which was merged to the Linux kernel :).

Furthermore, I do so on behalf of two Ubuntu users active on Ubuntu bug linked above.[1] In the first instance, I analysed the crash dump and explained the very distinct signature which it shows, indicating this bug. The second user confirmed that they suffered this bug and used a very specific workaround to avoid it.

[1] https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1760450/

(The Ubuntu bug is marked as affecting 7 people overall. I am certain this is an understatement. I mentioned in my comment in the bug, how the nature of the crashes made them hard for users to identify. One part is the same as the experience we had in Fedora. Automatically reported crashes were not reliably detected as duplicates, because the fatal SIGBUS signal can happen at a number of different points).