Solar Designer

> The system is a standard Debian Stretch (9.13) and 4.9.0-12-amd64 kernel. This kernel is a binary build that came with Debian, right? Or did you rebuild?

@Adam-pi3 Let's wait to hear from @gnd, but yes - without this issue having recently been reproduced by anyone, it doesn't look actionable for us.

> For the VirtualBox host software the only settings required are > > * `lkrg.pcfi_validate=1` > > * `lkrg.profile_validate=2` _One_ of these settings is required for VirtualBox host, not both....

> _One_ of these settings is required for VirtualBox host, not both. Specifically, if you want to make the minimal change required for VirtualBox host, use _only_ `lkrg.pcfi_validate=1`. Setting the...

> @adrelanos @solardiz should we close this issue? I think no, ideally we'd implement automatic detection of VirtualBox and adjust LKRG's default `lkrg.pcfi_validate` accordingly.

@udovdh Yes, I think we use `GFP_ATOMIC` too much and should fix that. Can you please try changing the two instances of `GFP_ATOMIC` below to `GFP_KERNEL`? Does this help? ```...

@udovdh For testing these changes, please revert to the defaults (do not override `vm.min_free_kbytes`). We got to make things work with the defaults. Thank you!

@Adam-pi3 We have two instances of the below comment in `p_ed_enforce_pcfi()`: ```c /* Current logic always call this function with IRQ disabled */ ``` If this were true, it'd be...

@Adam-pi3 I think this changed in c8e18884a6bb18b4ddcccfd9c2776e4c3472392f, but we forgot to update the comments and to reconsider the uses of `GFP_ATOMIC`. I think the comment should now say: ```c /*...

> As far as I remember, @udovdh is having this problem for some time. There is some puzzle unrelated to the LKRG Right. It is indeed puzzling that @udovdh is...