Re: Build error in 3.18.y-stable-queue (s390)

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Hi Sasha,

On 03/26/2016 10:41 PM, Sasha Levin wrote:
...

Should be fixed now, I hope.


Builds now all pass, but now I get runtime errors on arm and microblaze qemu tests.

WARNING: CPU: 0 PID: 33 at mm/mmap.c:2787 exit_mmap+0x1ac/0x230()

You'll need to also pick up commit b30fe6c7ced7 ("mm: fix false-positive warning
on exit due mm_nr_pmds(mm)") to fix that.

The s390 qemu test now builds, but the test itself gets a RCU stall and hangs.
Reverting "s390/mm: four page table levels vs. fork" fixes the problem.

Guenter

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