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iscsi-target: Fix ABORT_TASK + connection reset iscsi_queue_req memory leak

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This patch fixes a iscsi_queue_req memory leak when ABORT_TASK response
has been queued by TFO->queue_tm_rsp() -> lio_queue_tm_rsp() after a
long standing I/O completes, but the connection has already reset and
waiting for cleanup to complete in iscsit_release_commands_from_conn()
-> transport_generic_free_cmd() -> transport_wait_for_tasks() code.

It moves iscsit_free_queue_reqs_for_conn() after the per-connection command
list has been released, so that the associated se_cmd tag can be completed +
released by target-core before freeing any remaining iscsi_queue_req memory
for the connection generated by lio_queue_tm_rsp().

Cc: Thomas Glanzmann <thomas@glanzmann.de>
Cc: Charalampos Pournaris <charpour@gmail.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2014-06-10 04:03:54 +00:00
parent a95d651130
commit bbc0504885
1 changed files with 1 additions and 2 deletions
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3
drivers/target/iscsi/iscsi_target.c
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@ -4231,8 +4231,6 @@ int iscsit_close_connection(
if (conn->conn_transport->iscsit_wait_conn)
conn->conn_transport->iscsit_wait_conn(conn);
iscsit_free_queue_reqs_for_conn(conn);
/*
* During Connection recovery drop unacknowledged out of order
* commands for this connection, and prepare the other commands
@ -4249,6 +4247,7 @@ int iscsit_close_connection(
iscsit_clear_ooo_cmdsns_for_conn(conn);
iscsit_release_commands_from_conn(conn);
}
iscsit_free_queue_reqs_for_conn(conn);
/*
* Handle decrementing session or connection usage count if