Re: [4.10, panic, regression] iscsi: null pointer deref at iscsi_tcp_segment_done+0x20d/0x2e0

[Linus Torvalds]

Ok, so the numa issue was a red herring. With that fixed:

On Thu, Dec 22, 2016 at 1:06 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
>
> Better, but still bad. average files/s is not up to 200k files/s,
> so still a good 10-15% off where it should be. xfs_repair is back
> down to 10-15% off where it should be, too. bulkstat still fires off
> a bad page reference count warning, iscsi still panics immediately.

Do you have CONFIG_BLK_WBT enabled, perhaps?

It's new to this merge window, and I'm not convinced it's been tuned.
Particularly for your kinds of fairly extreme IO loads.

              Linus