From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
This patch adds a bugfix in tcm_qla2xxx_free_cmd() to explictly clear
qla_tgt_cmd->cmd_stop_free during an exception before normal completion
in order to prevent an infinite loop from occuring within qla_tgt_cmd
release path in tcm_qla2xxx_release_cmd().
Reported-by: Eric Seppanen <eric@xxxxxxxxxxxxxxx>
Cc: Madhuranath Iyengar <mni@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c
index ff39978..30a8987 100644
--- a/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c
+++ b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c
@@ -415,6 +415,11 @@ void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
return;
}
+ if (!atomic_read(&cmd->se_cmd.t_transport_complete)) {
+ atomic_set(&cmd->cmd_stop_free, 1);
+ smp_mb__after_atomic_dec();
+ }
+
atomic_set(&cmd->cmd_free, 1);
smp_mb__after_atomic_dec();
--
1.7.2.5
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