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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-05-23 00:48:35 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-06-03 19:17:31 -0700 |
| commit | 6cc44a6fb46e1ecc1c28125aa8fa34d317aa9ea7 (patch) | |
| tree | 03de13aad1a6bdc70bbe85508fd252a879bd97d3 /drivers/infiniband | |
| parent | 1e1110c43b1cda9fe77fc4a04835e460550e6b3c (diff) | |
| download | lwn-6cc44a6fb46e1ecc1c28125aa8fa34d317aa9ea7.tar.gz lwn-6cc44a6fb46e1ecc1c28125aa8fa34d317aa9ea7.zip | |
iser-target: Add missing target_put_sess_cmd for ImmedateData failure
This patch addresses a bug where an early exception for SCSI WRITE
with ImmediateData=Yes was missing the target_put_sess_cmd() call
to drop the extra se_cmd->cmd_kref reference obtained during the
normal iscsit_setup_scsi_cmd() codepath execution.
This bug was manifesting itself during session shutdown within
isert_cq_rx_comp_err() where target_wait_for_sess_cmds() would
end up waiting indefinately for the last se_cmd->cmd_kref put to
occur for the failed SCSI WRITE + ImmediateData descriptors.
This fix follows what traditional iscsi-target code already does
for the same failure case within iscsit_get_immediate_data().
Reported-by: Sagi Grimberg <sagig@dev.mellanox.co.il>
Cc: Sagi Grimberg <sagig@dev.mellanox.co.il>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index a1710465faaf..b9d647468b99 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -1210,6 +1210,8 @@ sequence_cmd: if (!rc && dump_payload == false && unsol_data) iscsit_set_unsoliticed_dataout(cmd); + else if (dump_payload && imm_data) + target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd); return 0; } |