From: michaelc@cs.wisc.edu
To: linux-scsi@vger.kernel.org
Cc: Mike Christie <michaelc@cs.wisc.edu>
Subject: [PATCH 13/14] libiscsi: fix possbile null ptr session command cleanup
Date: Thu, 5 Mar 2009 14:46:07 -0600 [thread overview]
Message-ID: <12362859782510-git-send-email-michaelc@cs.wisc.edu> (raw)
In-Reply-To: <12362859782406-git-send-email-michaelc@cs.wisc.edu>
From: Mike Christie <michaelc@cs.wisc.edu>
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>
---
drivers/scsi/libiscsi.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index d070179..dfaa8ad 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -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))
- conn->task = NULL;
+ 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) {
--
1.6.0.6
next prev parent reply other threads:[~2009-03-05 20:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-05 20:45 iscsi update for 2.6.30 michaelc
2009-03-05 20:45 ` [PATCH 01/14] libiscsi: fix iscsi pool error path michaelc
2009-03-05 20:45 ` [PATCH 02/14] iscsi tcp: bidi capable michaelc
2009-03-05 20:45 ` [PATCH 03/14] iser: have iser use its own logging michaelc
2009-03-05 20:45 ` [PATCH 04/14] libiscsi: replace scsi_debug logging with session/conn logging michaelc
2009-03-05 20:45 ` [PATCH 05/14] libiscsi_tcp: replace tcp_debug/scsi_debug " michaelc
2009-03-05 20:46 ` [PATCH 06/14] iscsi_tcp: replace scsi_debug/tcp_debug logging with iscsi conn logging michaelc
2009-03-05 20:46 ` [PATCH 07/14] libiscsi: don't cap queue depth in iscsi modules michaelc
2009-03-05 20:46 ` [PATCH 08/14] iscsi class: fix lock dep warning on logout michaelc
2009-03-05 20:46 ` [PATCH 09/14] iscsi lib: have lib create work queue for transmitting IO michaelc
2009-03-05 20:46 ` [PATCH 10/14] iscsi lib: remove qdepth param from iscsi host allocation michaelc
2009-03-05 20:46 ` [PATCH 11/14] libiscsi: pass session failure a session struct michaelc
2009-03-05 20:46 ` [PATCH 12/14] iscsi class: remove host no argument from session creation callout michaelc
2009-03-05 20:46 ` michaelc [this message]
2009-03-05 20:46 ` [PATCH 14/14] cxgb3i - fixed function descriptions michaelc
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