[SRU][Xenial][PATCH 2/2] UBUNTU: SAUCE: hv: don't reset hv_context.tsc_page on crash

[Stefan Bader]

On 27.01.2017 21:26, Joseph Salisbury wrote:
> On 01/27/2017 02:56 PM, Joseph Salisbury wrote:
>> From: Vitaly Kuznetsov <vkuznets at redhat.com>
>>
>> BugLink: http://bugs.launchpad.net/bugs/1630924
>>
>> It may happen that secondary CPUs are still alive and resetting
>> hv_context.tsc_page will cause a consequent crash in read_hv_clock_tsc()
>> as we don't check for it being not NULL there. It is safe as we're not
>> freeing this page anyways.
>>
>> Signed-off-by: Vitaly Kuznetsov <vkuznets at redhat.com>
>> Signed-off-by: K. Y. Srinivasan <kys at microsoft.com>
>> Cc: <stable at vger.kernel.org>
>> Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
>> (cherry picked from commit 56ef6718a1d8d77745033c5291e025ce18504159)
>> Signed-off-by: Joseph Salisbury <joseph.salisbury at canonical.com>
>> ---
>>  drivers/hv/hv.c | 5 +++--
>>  1 file changed, 3 insertions(+), 2 deletions(-)
>>

> 
> I guess this doesn't need to be SAUCE since it's in linux-next.

I am torn there. Actually the SOB looks like this came via stable. But then it
would not be there if not also would be upstream and only in linux-next?
In the past I tried to use some annotation like (pre-stable) when picking stable
patches before we applied the full stable series. Just to give whomever does
apply the stable set some easy hint that the previously applied version
can/needs to be dropped.

-Stefan

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