On Mon, Dec 10, 2018 at 10:16:03PM +0100, Thomas Gleixner wrote:

On Mon, 10 Dec 2018, Sasha Levin wrote:

...

This commit has been processed because it contains a -stable tag. The stable tag indicates that it's relevant for the following trees: all

The bot has tested the following trees: v4.19.8, v4.14.87, v4.9.144, v4.4.166, v3.18.128,

v4.19.8: Build OK! v4.14.87: Build OK! v4.9.144: Build failed! Errors: kernel/futex.c:1186:28: error: ???uaddr??? undeclared (first use in this function)

v4.4.166: Build failed! Errors: kernel/futex.c:1181:28: error: ???uaddr??? undeclared (first use in this function)

v3.18.128: Build failed! Errors: kernel/futex.c:1103:28: error: ???uaddr??? undeclared (first use in this function)

How should we proceed with this patch?

I'll look into that once this is sorted... I so love these rotten kernels.

It seems we need:

734009e96d19 ("futex: Change locking rules")

Which isn't trivial to backport.

-- Thanks, Sasha