[PATCH 1/3] scsi: libsas: fix memory leak in sas_smp_get_phy_events()

[Jason Yan]

We've got a memory leak with the following producer:

while true;
do cat /sys/class/sas_phy/phy-1:0:12/invalid_dword_count >/dev/null;
done

The buffer req is allocated and not freed after we return. Fix it.

Signed-off-by: Jason Yan <yanai...@huawei.com>
CC: John Garry <john.ga...@huawei.com>
CC: chenqilin <chenqil...@huawei.com>
CC: chenxiang <chenxian...@hisilicon.com>
---
 drivers/scsi/libsas/sas_expander.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/libsas/sas_expander.c 
b/drivers/scsi/libsas/sas_expander.c
index 3183d63..4b0c67f 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -695,6 +695,7 @@ int sas_smp_get_phy_events(struct sas_phy *phy)
        phy->phy_reset_problem_count = scsi_to_u32(&resp[24]);
 
  out:
+       kfree(req);
        kfree(resp);
        return res;
 
-- 
2.9.5