oom: fix livelock when frozen task is selected
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b4 am [email protected]Versions newest first
- v1 Latest2 patches 5 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | lguest: move process freezing before pending signals checkdrivers/ | +7 | 3 replies | |
| 2/2 | oom: do not live lock on frozen tasksmm/ | +6 | 15 replies |
Reviews trailers per patch
All 2 patches have a Reviewed-by or Acked-by.
| Patch | KAMEZAWA Hiroyuki | Rafael J. Wysocki | David Rientjes | Rusty Russell |
|---|---|---|---|---|
| 1/2 | A-b | |||
| 2/2 | R-b | A-b | A-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 4 reviewers.
Cover letter [PATCH 0/2] oom: fix livelock when frozen task is selected
Hi Andrew,
this small patchset addresses a possible livelock when OOM killer tries to kill a frozen task. The issue has been reported by Konstantin Khlebnikov at https://lkml.org/lkml/2011/8/23/45.
The first patch addresses a possible issue in lguest which calls try_to_freeze with user context and then continues with other work after it returns from the fridge.
The second patch addresses the issue by thawing the frozen task in the oom kill path.
Michal Hocko (2):
lguest: move process freezing before pending signals check
oom: do not live lock on frozen tasks
drivers/lguest/core.c | 14 +++++++------- mm/oom_kill.c | 6 ++++++ 2 files changed, 13 insertions(+), 7 deletions(-)
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