Comment # 154 on bug 80419 from Kamil Páral

The commit is present in all the branches, but it got reverted two weeks later:
https://cgit.freedesktop.org/mesa/mesa/commit/?id=52098fada7e

Where "the previous change" probably refers to:
https://cgit.freedesktop.org/mesa/mesa/commit/?id=95eb5e4eed

So if you can reliably reproduce a crash with vanilla Mesa and it works fine if
you re-apply the patch, it means that Michel's fix doesn't work as intended.
Your problem can be the same issue as reported here, or a different issue. I'll
reopen this issue to make sure that maintainers don't overlook this.