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authorNicholas Bellinger <nab@linux-iscsi.org>2014-05-23 00:48:35 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-11 12:03:26 -0700
commit553e4c5591f1e94519ca299aec0c1576f5cede9f (patch)
tree02167be79f074050a1b84dfc210a27d87db864b9 /drivers/infiniband
parent65375ce7a1db8ec4b3e90a38c082fe9ceab57a1f (diff)
downloadlinux-linaro-stable-553e4c5591f1e94519ca299aec0c1576f5cede9f.tar.gz
iser-target: Add missing target_put_sess_cmd for ImmedateData failure
commit 6cc44a6fb46e1ecc1c28125aa8fa34d317aa9ea7 upstream. 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> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c2
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 988e29d18bb4..bae20f8bb034 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -965,6 +965,8 @@ 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;
}