APPLIED Re: [PATCH 0/8][SRU][OEM-5.17] System hang during S3 test

[Timo Aaltonen]

AceLan Kao kirjoitti 21.9.2022 klo 6.19:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://launchpad.net/bugs/1990330
> 
> [Impact]
> It hangs while doing S3 test on the platform with CPU Intel(R) Pentium(R)
> Silver N6005 @ 2.00GHz
> 
> [Fix]
> Can't reproduce this issue with v5.18-rc1 kernel, so bisecting the kernel
> and found this below commit
>     567511462387 mm/memcg: protect memcg_stock with a local_lock_t
> For safty, I backported the series of the patch
>     https://www.spinics.net/lists/cgroups/msg31595.html
> But I still can reproduce the issue after applied those patches on top of
> 5.17 oem kernel.
> So, I did a second round of bisecting and found below commit is required, too
>     a74c6c00b1cb mm/memremap: avoid calling kasan_remove_zero_shadow() for device private memory
> 
> [Test]
> Done the S3 test 400 times on the target and it's still working well.
> 
> [Where problems could occur]
> Hard to evaluate the impact, but from the overnight test, the memory usage
> is still low, so there should be no memory leakage, and can't find any fix
> patch for those applied commits from upstream and linux-next trees.
> The patches are all from v5.18-rc1, so we only need them to be applied on
> oem-5.17 kernel, and will let QA to do thoroughly tests.
> 
> Johannes Weiner (1):
>    mm/memcg: opencode the inner part of obj_cgroup_uncharge_pages() in
>      drain_obj_stock()
> 
> Miaohe Lin (1):
>    mm/memremap: avoid calling kasan_remove_zero_shadow() for device
>      private memory
> 
> Michal Hocko (1):
>    mm/memcg: revert ("mm/memcg: optimize user context object stock
>      access")
> 
> Sebastian Andrzej Siewior (4):
>    mm/memcg: disable threshold event handlers on PREEMPT_RT
>    mm/memcg: protect per-CPU counter by disabling preemption on
>      PREEMPT_RT where needed.
>    mm/memcg: protect memcg_stock with a local_lock_t
>    mm/memcg: disable migration instead of preemption in
>      drain_all_stock().
> 
> Yosry Ahmed (1):
>    memcg: add per-memcg total kernel memory stat
> 
>   .../admin-guide/cgroup-v1/memory.rst          |   2 +
>   Documentation/admin-guide/cgroup-v2.rst       |   5 +
>   include/linux/memcontrol.h                    |   1 +
>   mm/memcontrol.c                               | 257 +++++++++++-------
>   mm/memremap.c                                 |   3 +-
>   5 files changed, 173 insertions(+), 95 deletions(-)
> 

applied to oem-5.17, thanks

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