I built a 16.04(4.4 based kenrel) with the requested patch.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1761674/xenial
Can you test this kernel and see if it resolves this bug?
Note, to test this kernel, you need to install both the linux-image and
linux-image-extra .deb packages.
I also tried to apply this patch to the 4.13 based 17.10 Artful kernel.
However, I'll have to perform allot of back porting for Artful. For example,
the patch relies on _raw_compare_and_swap(). However, this function was
removed in v4.12-rc1 by commit 02c503f. Can you confirm this patch is needed
in Artful, and if you recommend any prereq patches?
** Changed in: linux (Ubuntu Artful)
Status: In Progress => Incomplete
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https://bugs.launchpad.net/bugs/1761674
Title:
[Ubuntu 16.04] kernel: fix rwlock implementation
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