net/smc: do not delete lgr from list twice

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When 2 callers call smc_lgr_terminate() at the same time
for the same lgr, one gets the lgr_lock and deletes the lgr from the
list and releases the lock. Then the second caller gets the lock and
tries to delete it again.
In smc_lgr_terminate() add a check if the link group lgr is already
deleted from the link group list and prevent to try to delete it a
second time.
And add a check if the lgr is marked as freeing, which means that a
termination is already pending.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Karsten Graul 2020-02-17 16:24:52 +01:00 • committed by David S. Miller

parent 354ea2baa3

commit 3739707c45

1 changed files with 1 additions and 1 deletions

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net/smc/smc_core.c

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