Commit 72899682 authored Mar 05, 2009 by Mike Christie Committed by James Bottomley Mar 13, 2009

[SCSI] libiscsi: fix possbile null ptr session command cleanup



If the iscsi eh fires when the current task is a nop, then
the task->sc pointer is null. fail_all_commands could
then try to do task->sc->device and oops. We actually do
not need to access the curr task in this path, because
if it is a cmd task the fail_command call will handle
this and if it is mgmt task then the flush of the mgmt
queues will handle that.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

parent 5e7facb7

drivers/scsi/libiscsi.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -1603,8 +1603,11 @@ static void fail_all_commands(struct iscsi_conn *conn, unsigned lun,
		{
		struct iscsi_task task, tmp;

		if (conn->task && (conn->task->sc->device->lun == lun \|\| lun == -1))
		if (conn->task) {
		if (lun == -1 \|\|
		(conn->task->sc && conn->task->sc->device->lun == lun))
		conn->task = NULL;
		}

		/* flush pending */
		list_for_each_entry_safe(task, tmp, &conn->xmitqueue, running) {