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Message-Id: <20120330194851.198752647@linuxfoundation.org>
Date: Fri, 30 Mar 2012 12:49:51 -0700
From: Greg KH <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
alan@...rguk.ukuu.org.uk, Joern Engel <joern@...fs.org>,
Nicholas Bellinger <nab@...ux-iscsi.org>
Subject: [ 078/149] target: fix use after free in target_report_luns
3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: =?UTF-8?q?J=C3=B6rn=20Engel?= <joern@...fs.org>
commit 382436f8804fe1cb20b9a2a811a10eb2d8554721 upstream.
Fix possible NULL pointer dereference in target_report_luns failure path.
Signed-off-by: Joern Engel <joern@...fs.org>
Signed-off-by: Nicholas Bellinger <nab@...ux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/target/target_core_device.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -696,12 +696,12 @@ int target_report_luns(struct se_task *s
* See SPC3 r07, page 159.
*/
done:
- transport_kunmap_data_sg(se_cmd);
lun_count *= 8;
buf[0] = ((lun_count >> 24) & 0xff);
buf[1] = ((lun_count >> 16) & 0xff);
buf[2] = ((lun_count >> 8) & 0xff);
buf[3] = (lun_count & 0xff);
+ transport_kunmap_data_sg(se_cmd);
se_task->task_scsi_status = GOOD;
transport_complete_task(se_task, 1);
--
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