From 96809f1b15eddae2325b2ab78e6f931edc969074 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Wed, 15 Aug 2007 01:38:29 -0500 Subject: [PATCH] [SCSI] libiscsi: fix null ptr regression when aborting a command with data to transfer We do not want to send data if we are aborting a task. There is a check in iscsi_xmit_ctask, but right before calling this we overwrite the state so we always go right past the test. Sending data causes problems because when we clean up from a successful abort the LLD assumes that the task is not running. Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- drivers/scsi/libiscsi.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 5606d1e62978..f5915d4d63d9 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -737,12 +737,19 @@ check_mgmt: */ conn->ctask = list_entry(conn->xmitqueue.next, struct iscsi_cmd_task, running); - if (conn->ctask->state == ISCSI_TASK_PENDING) { + switch (conn->ctask->state) { + case ISCSI_TASK_ABORTING: + break; + case ISCSI_TASK_PENDING: iscsi_prep_scsi_cmd_pdu(conn->ctask); conn->session->tt->init_cmd_task(conn->ctask); + /* fall through */ + default: + conn->ctask->state = ISCSI_TASK_RUNNING; + break; } - conn->ctask->state = ISCSI_TASK_RUNNING; list_move_tail(conn->xmitqueue.next, &conn->run_list); + rc = iscsi_xmit_ctask(conn); if (rc) goto again; -- 2.20.1