From: Tong Zhang <ztong0001@xxxxxxxxx>
[ Upstream commit 4416e98594dc04590ebc498fc4e530009535c511 ]
this one is similar to the phy_data allocation fix in uPD98402, the
driver allocate the idt77105_priv and store to dev_data but later
dereference using dev->dev_data, which will cause null-ptr-dereference.
fix this issue by changing dev_data to phy_data so that PRIV(dev) can
work correctly.
Signed-off-by: Tong Zhang <ztong0001@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/atm/idt77105.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/atm/idt77105.c b/drivers/atm/idt77105.c
index 0a67487c0b1d..a2ecb4190f78 100644
--- a/drivers/atm/idt77105.c
+++ b/drivers/atm/idt77105.c
@@ -261,7 +261,7 @@ static int idt77105_start(struct atm_dev *dev)
{
unsigned long flags;
- if (!(dev->dev_data = kmalloc(sizeof(struct idt77105_priv),GFP_KERNEL)))
+ if (!(dev->phy_data = kmalloc(sizeof(struct idt77105_priv),GFP_KERNEL)))
return -ENOMEM;
PRIV(dev)->dev = dev;
spin_lock_irqsave(&idt77105_priv_lock, flags);
@@ -336,7 +336,7 @@ static int idt77105_stop(struct atm_dev *dev)
else
idt77105_all = walk->next;
dev->phy = NULL;
- dev->dev_data = NULL;
+ dev->phy_data = NULL;
kfree(walk);
break;
}
--
2.30.1
