APPLIED: [SRU][Bionic][PATCH 0/1] powerpc/mce: Fix a bug where mce loops on memory UE.

[Khaled Elmously]

Applied to bionic

On 2018-06-05 12:21:57 , Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1774964
> 
> == SRU Justification ==
> IBM reports seeing the following during their testing:
> WARNING: CPU: 97 PID: 11965 at /build/linux-0zaMZw/linux-4.15.0/kernel/sched/core.c:1189 set_task_cpu+0x240/0x250
> 
> This is a regression and was introduced by the following two commits in
> v4.15-rc1:
> 01eaac2b0591 ("powerpc/mce: Hookup ierror (instruction) UE errors")
> ba41e1e1ccb9 ("powerpc/mce: Hookup derror (load/store) UE errors")
> 
> This regression is fixed by commit 75ecfb49516c in v4.17-rc3.  The
> commit was also cc'd to upstream stable, but it is being SRU'd to get
> the fix into Ubuntu without waiting for it to come down via stable
> updates.
>  
> 
> == Fix ==
> 75ecfb49516c ("powerpc/mce: Fix a bug where mce loops on memory UE.")
> 
> == Regression Potential ==
> Low.  Limited to powerpc.  The commit was also cc'd to upstream stable
> so it will recieve additional upstream stable review.
> 
> == Test Case ==
> A test kernel was built with this patch and tested by the original bug reporter.
> The bug reporter states the test kernel resolved the bug.
> 
> Mahesh Salgaonkar (1):
>   powerpc/mce: Fix a bug where mce loops on memory UE.
> 
>  arch/powerpc/kernel/mce_power.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> -- 
> 2.7.4
> 
> 
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