[PATCH] target/core: Avoid that a kernel oops can be triggered when an XCOPY command fails

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Fixes: aa73237dcb2d ("scsi: target/core: Always call transport_complete_callback() upon failure")
Cc: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Cc: David Disseldorp <ddiss@xxxxxxx>
Cc: Mike Christie <mchristi@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
 drivers/target/target_core_transport.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index e31e4fc31aa1..2cfd61d62e97 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1778,7 +1778,7 @@ EXPORT_SYMBOL(target_submit_tmr);
 void transport_generic_request_failure(struct se_cmd *cmd,
 		sense_reason_t sense_reason)
 {
-	int ret = 0;
+	int ret = 0, post_ret;
 
 	pr_debug("-----[ Storage Engine Exception; sense_reason %d\n",
 		 sense_reason);
@@ -1790,7 +1790,7 @@ void transport_generic_request_failure(struct se_cmd *cmd,
 	transport_complete_task_attr(cmd);
 
 	if (cmd->transport_complete_callback)
-		cmd->transport_complete_callback(cmd, false, NULL);
+		cmd->transport_complete_callback(cmd, false, &post_ret);
 
 	if (transport_check_aborted_status(cmd, 1))
 		return;
-- 
2.19.1.930.g4563a0d9d0-goog




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