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Message-Id: <1609312994-121032-1-git-send-email-abaci-bugfix@linux.alibaba.com>
Date: Wed, 30 Dec 2020 15:23:14 +0800
From: YANG LI <abaci-bugfix@...ux.alibaba.com>
To: davem@...emloft.net
Cc: kuba@...nel.org, drt@...ux.ibm.com, ljp@...ux.ibm.com,
sukadev@...ux.ibm.com, mpe@...erman.id.au,
benh@...nel.crashing.org, paulus@...ba.org, netdev@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
YANG LI <abaci-bugfix@...ux.alibaba.com>
Subject: [PATCH] ibmvnic: fix: NULL pointer dereference.
The error is due to dereference a null pointer in function
reset_one_sub_crq_queue():
if (!scrq) {
netdev_dbg(adapter->netdev,
"Invalid scrq reset. irq (%d) or msgs(%p).\n",
scrq->irq, scrq->msgs);
return -EINVAL;
}
If the expression is true, scrq must be a null pointer and cannot
dereference.
Signed-off-by: YANG LI <abaci-bugfix@...ux.alibaba.com>
Reported-by: Abaci <abaci@...ux.alibaba.com>
---
drivers/net/ethernet/ibm/ibmvnic.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index f302504..d7472be 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -2981,9 +2981,7 @@ static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter,
int rc;
if (!scrq) {
- netdev_dbg(adapter->netdev,
- "Invalid scrq reset. irq (%d) or msgs (%p).\n",
- scrq->irq, scrq->msgs);
+ netdev_dbg(adapter->netdev, "Invalid scrq reset.\n");
return -EINVAL;
}
--
1.8.3.1
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