diff options
| author | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2016-09-29 11:07:11 -0700 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2017-01-02 14:02:55 -0800 |
| commit | cf657269d311d575eb196c7045579b3443631b8b (patch) | |
| tree | a2f7b323eff54290c57c0b04f30377d4024c0877 /net/rds/ib.h | |
| parent | 941f8d55f6d613a460a5e080d25a38509f45eb75 (diff) | |
RDS: IB: fix panic due to handlers running post teardown
Shutdown code reaping loop takes care of emptying the
CQ's before they being destroyed. And once tasklets are
killed, the hanlders are not expected to run.
But because of core tasklet code issues, tasklet handler could
still run even after tasklet_kill,
RDS IB shutdown code already reaps the CQs before freeing
cq/qp resources so as such the handlers have nothing left
to do post shutdown.
On other hand any handler running after teardown and trying
to access already freed qp/cq resources causes issues
Patch fixes this race by makes sure that handlers returns
without any action post teardown.
Reviewed-by: Wengang <wen.gang.wang@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Diffstat (limited to 'net/rds/ib.h')
| -rw-r--r-- | net/rds/ib.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h index 1fe9f79fead5..540458928f3c 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -185,6 +185,7 @@ struct rds_ib_connection { /* Endpoint role in connection */ bool i_active_side; + atomic_t i_cq_quiesce; /* Send/Recv vectors */ int i_scq_vector; |