On Tue, Dec 22, 2015 at 4:09 PM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>
> Since it seemed very reliable, I started my bisect. It came down to this
> patch:
>
> From 578270bfbd2803dc7b0b03fbc2ac119efbc73195 Mon Sep 17 00:00:00 2001
> From: Ming Lei <ming.lei@xxxxxxxxxxxxx>
> Date: Tue, 24 Nov 2015 10:35:29 +0800
> Subject: [PATCH] block: fix segment split
We *just* fixed this. It was pretty subtle, and the debugging went on
for several days. But the fixed got applied to the block tree earlier
today, and I just pulled it only 15 minutes ago and pushed it out just
now.
So check current -git, it should work for you.
(And if you care about the particular fix: it's commit 23688bf4f830:
"block: ensure to split after potentially bouncing a bio").
And yes, the way to trigger it seems to be to run a 32-bit kernel and have PAE.
Linus
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