Re: Patch "coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping" has been added to the 4.4-stable tree

On Tue 04-06-19 16:51:38, Ben Hutchings wrote: [...]

• I don't understand why collapse_huge_range() needs to be fixed, but

then I really don't understand the khugepaged code at all! So I would trust Michal on this.

To be honest, I am not really sure myself here. But we are using a remote mm there and I do not see anything that would prevent from racing with exit/coredump. Maybe I am wrong. Let's wait for Andrea for his review feedback. This patch is quite tricky for the stable backport.

Thanks!