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[v3,0/2] hwpoison: fix race with compound page allocation

Message ID 20210511151016.2310627-1-nao.horiguchi@gmail.com (mailing list archive)
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Series hwpoison: fix race with compound page allocation | expand

Message

Naoya Horiguchi May 11, 2021, 3:10 p.m. UTC 
Hi everyone,

I updated the patch for the issue reported by Muchun Song in [1].  I
separated into two patches (to reduce the size of core fix for stable):
patch 1/2 focuses on preventing VM_BUG_ON_PAGE() in the reported race.
Patch 2/2 includes some code improvement like calling retry code, revising
the function comment, and some refactoring.

Any comment and testing would be appreciated.

Thanks,
Naoya Horiguchi

[1] https://lore.kernel.org/linux-mm/20210421060259.67554-1-songmuchun@bytedance.com/T/
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Summary:

Naoya Horiguchi (2):
      mm,hwpoison: fix race with compound page allocation
      mm,hwpoison: make get_hwpoison_page call get_any_page()

 mm/memory-failure.c | 169 +++++++++++++++++++++++++++++-----------------------
 1 file changed, 96 insertions(+), 73 deletions(-)