dm mpath: check if path's request_queue is dying in activate_path()

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If pg_init_retries is set and a request is queued against a multipath
device with all underlying block device request_queues in the "dying"
state then an infinite loop is triggered because activate_path() never
succeeds and hence never calls pg_init_done().

This change avoids that device removal triggers an infinite loop by
failing the activate_path() which causes the "dying" path to be failed.

Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org

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This commit is contained in:

Mike Snitzer 2016-09-01 12:06:37 -04:00

parent 9dbeaeabac

commit f10e06b744

1 changed files with 3 additions and 3 deletions

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drivers/md/dm-mpath.c

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