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* [PATCH 0/3] Fix races on device removal
@ 2020-07-08 13:27 Lukas Wunner
  2020-07-08 13:27 ` [PATCH 1/3] driver core: Avoid binding drivers to dead devices Lukas Wunner
                   ` (3 more replies)
  0 siblings, 4 replies; 11+ messages in thread
From: Lukas Wunner @ 2020-07-08 13:27 UTC (permalink / raw)
  To: Greg Kroah-Hartman
  Cc: Rafael J. Wysocki, Dan Williams, Geert Uytterhoeven,
	Pantelis Antoniou, Alexander Duyck, Mark Brown, linux-kernel,
	linux-spi

Prevent dynamic SPI device addition below a controller which is
being removed.  To do so, set the controller's "dead" flag using
kill_device() (patch [3/3]).

Serialize access to a device's "dead" flag with a newly introduced
rw_semaphore in lieu of the device_lock to avoid deadlocks occurring
with the new use case (patch [2/3]).

Add a missing check for the "dead" flag upon driver binding
(patch [1/3]).


Lukas Wunner (3):
  driver core: Avoid binding drivers to dead devices
  driver core: Use rwsem for kill_device() serialization
  driver core: Avoid adding children below a dead parent

 drivers/base/base.h  |  2 ++
 drivers/base/core.c  | 49 ++++++++++++++++++++++++++++++--------------
 drivers/base/dd.c    | 12 ++++++++++-
 drivers/nvdimm/bus.c |  8 +-------
 drivers/spi/spi.c    |  3 +++
 5 files changed, 51 insertions(+), 23 deletions(-)

-- 
2.27.0


^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2020-07-31  9:53 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-08 13:27 [PATCH 0/3] Fix races on device removal Lukas Wunner
2020-07-08 13:27 ` [PATCH 1/3] driver core: Avoid binding drivers to dead devices Lukas Wunner
2020-07-08 13:27 ` [PATCH 2/3] driver core: Use rwsem for kill_device() serialization Lukas Wunner
2020-07-30  6:53   ` Greg Kroah-Hartman
2020-07-30  9:56     ` Lukas Wunner
2020-07-31  6:45       ` Greg Kroah-Hartman
2020-07-31  9:53         ` Lukas Wunner
2020-07-08 13:27 ` [PATCH 3/3] driver core: Avoid adding children below a dead parent Lukas Wunner
2020-07-24 14:29   ` [driver core] e3b1cb5c89: WARNING:possible_recursive_locking_detected kernel test robot
2020-07-25 11:07     ` Lukas Wunner
2020-07-30  6:54 ` [PATCH 0/3] Fix races on device removal Greg Kroah-Hartman

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