[cip-dev] Reviewing 4.4 stable updates

[agustin.benito@codethink.co.uk (Agustín Benito Bethencourt)]

Hi Daniel,

On Tuesday, 15 May 2018 08:44:19 CEST Daniel Sangorrin wrote:
> It seems that backporting "fanotify: Release SRCU lock when waiting for
> userspace response" was too complicated:
> https://lists.debian.org/debian-kernel/2017/06/msg00170.html
> 
> > -----Original Message-----
> > From: cip-dev-bounces at lists.cip-project.org
> > [mailto:cip-dev-bounces at lists.cip-project.org] On Behalf Of Daniel
> > Sangorrin Sent: Tuesday, May 15, 2018 1:07 PM
> > To: 'Ben Hutchings' <ben.hutchings@codethink.co.uk>;
> > cip-dev at lists.cip-project.org
> > Subject: Re: [cip-dev] Reviewing 4.4 stable updates
> > 
> > > -----Original Message-----
> > > From: cip-dev-bounces at lists.cip-project.org
> > > [mailto:cip-dev-bounces at lists.cip-project.org] On Behalf Of Daniel
> > > Sangorrin Sent: Thursday, April 26, 2018 8:53 AM
> > > To: 'Ben Hutchings' <ben.hutchings@codethink.co.uk>;
> > > cip-dev at lists.cip-project.org
> > > Subject: Re: [cip-dev] Reviewing 4.4 stable updates
> > 
> > ...
> > 
> > > I saw there is already a 4.4.129 on the linux-stable-rc.git linux-4.4.y.
> > > Test results so far show no regressions (altough i see failures that
> > > might need investigation?):
> > > Pixel: https://lkml.org/lkml/2018/4/22/732
> > > Linaro: https://lkml.org/lkml/2018/4/23/116
> > > Kerneltests: https://lkml.org/lkml/2018/4/23/823
> > > dmseg: https://lkml.org/lkml/2018/4/23/1028
> > > 
> > > I will run some tests with Fuego.
> > 
> > Sorry for the late response. I tested LTS 4.4.129 with Fuego and most
> > tests worked correctly.
> > There were a few errors on some of the LTP tests (see the file attached).
> > 
> > fcntl35.c:98: FAIL: an unprivileged user init the capacity of a pipe to
> > 65536 unexpectedly, expected 4096
> > getxattr04.c:72: FAIL: getxattr() failed to get an existing attribute
> > inotify07.c:157: FAIL: didn't get event: mask=40000004
> > inotify08.c:150: FAIL: didn't get event: mask=4
> > [Note] These 4 errors could be related with some configuration, so I need
> > to investigate them further.
> > 
> > For fanotify07 and fanotify08 I got some timeout errors:
> > tst_test.c:1015: INFO: Timeout per run is 0h 05m 00s
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Test timeouted, sending SIGKILL!
> > Cannot kill test processes!
> > Congratulation, likely test hit a kernel bug.
> > Exitting uncleanly...
> > 
> > Dhinakar Kalyanasundaram mentioned that this bug was fixed in kernel 4.14,
> > and Tim Bird updated the Fuego LTP documentation suggesting that
> > backporting the patch "fanotify: Release SRCU lock when waiting for
> > userspace response" should fix the hang.
> > https://patchwork.kernel.org/patch/9659809/
> > 
> > Shall I backport it and test?

It would be of a great help.

Can you send these reports to cip-testing-results ?

Best Regards


-- 
Agust?n Benito Bethencourt
Principal Consultant
Codethink Ltd