* [patch] scsi: dpt_i2o: double free if adpt_i2o_online_hba() fails
@ 2016-12-16 9:35 Dan Carpenter
2016-12-20 22:46 ` Martin K. Petersen
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2016-12-16 9:35 UTC (permalink / raw)
To: Adaptec OEM Raid Solutions
Cc: James E.J. Bottomley, Martin K. Petersen, linux-scsi,
kernel-janitors
There are two places where adpt_i2o_online_hba() is called. Both
callers call adpt_i2o_delete_hba(pHba) if adpt_i2o_online_hba() fails
and since we also free it here that causes a double free bug.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
This bug pre-dates git.
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 27c0dce22e72..7d32c2f07067 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -2768,16 +2768,12 @@ static int adpt_i2o_activate_hba(adpt_hba* pHba)
static int adpt_i2o_online_hba(adpt_hba* pHba)
{
- if (adpt_i2o_systab_send(pHba) < 0) {
- adpt_i2o_delete_hba(pHba);
+ if (adpt_i2o_systab_send(pHba) < 0)
return -1;
- }
/* In READY state */
- if (adpt_i2o_enable_hba(pHba) < 0) {
- adpt_i2o_delete_hba(pHba);
+ if (adpt_i2o_enable_hba(pHba) < 0)
return -1;
- }
/* In OPERATIONAL state */
return 0;
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [patch] scsi: dpt_i2o: double free if adpt_i2o_online_hba() fails
2016-12-16 9:35 [patch] scsi: dpt_i2o: double free if adpt_i2o_online_hba() fails Dan Carpenter
@ 2016-12-20 22:46 ` Martin K. Petersen
0 siblings, 0 replies; 2+ messages in thread
From: Martin K. Petersen @ 2016-12-20 22:46 UTC (permalink / raw)
To: Dan Carpenter
Cc: Adaptec OEM Raid Solutions, James E.J. Bottomley,
Martin K. Petersen, linux-scsi, kernel-janitors
>>>>> "Dan" = Dan Carpenter <dan.carpenter@oracle.com> writes:
Dan> There are two places where adpt_i2o_online_hba() is called. Both
Dan> callers call adpt_i2o_delete_hba(pHba) if adpt_i2o_online_hba()
Dan> fails and since we also free it here that causes a double free bug.
Applied to 4.11/scsi-queue.
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 2+ messages in thread
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2016-12-16 9:35 [patch] scsi: dpt_i2o: double free if adpt_i2o_online_hba() fails Dan Carpenter
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