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crypto: chelsio - Fix potential NULL pointer dereferences 

Add null checks on lookup_tid() return value in order to prevent
null pointer dereferences.

Addresses-Coverity-ID: 1467422 ("Dereference null return value")
Addresses-Coverity-ID: 1467443 ("Dereference null return value")
Addresses-Coverity-ID: 1467445 ("Dereference null return value")
Addresses-Coverity-ID: 1467449 ("Dereference null return value")
Fixes: cc35c88ae4 ("crypto : chtls - CPL handler definition")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gustavo A. R. Silva 2018-04-03 15:09:12 -05:00 committed by Herbert Xu
parent 31545df391
commit 3d8ccf9f6e
1 changed files with 16 additions and 0 deletions
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16
drivers/crypto/chelsio/chtls/chtls_cm.c
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@ -1537,6 +1537,10 @@ static int chtls_rx_data(struct chtls_dev *cdev, struct sk_buff *skb)
struct sock *sk; struct sock *sk;
sk = lookup_tid(cdev->tids, hwtid); sk = lookup_tid(cdev->tids, hwtid);
if (unlikely(!sk)) {
pr_err("can't find conn. for hwtid %u.\n", hwtid);
return -EINVAL;
}
skb_dst_set(skb, NULL); skb_dst_set(skb, NULL);
process_cpl_msg(chtls_recv_data, sk, skb); process_cpl_msg(chtls_recv_data, sk, skb);
return 0; return 0;
@ -1585,6 +1589,10 @@ static int chtls_rx_pdu(struct chtls_dev *cdev, struct sk_buff *skb)
struct sock *sk; struct sock *sk;
sk = lookup_tid(cdev->tids, hwtid); sk = lookup_tid(cdev->tids, hwtid);
if (unlikely(!sk)) {
pr_err("can't find conn. for hwtid %u.\n", hwtid);
return -EINVAL;
}
skb_dst_set(skb, NULL); skb_dst_set(skb, NULL);
process_cpl_msg(chtls_recv_pdu, sk, skb); process_cpl_msg(chtls_recv_pdu, sk, skb);
return 0; return 0;
@ -1646,6 +1654,10 @@ static int chtls_rx_cmp(struct chtls_dev *cdev, struct sk_buff *skb)
struct sock *sk; struct sock *sk;
sk = lookup_tid(cdev->tids, hwtid); sk = lookup_tid(cdev->tids, hwtid);
if (unlikely(!sk)) {
pr_err("can't find conn. for hwtid %u.\n", hwtid);
return -EINVAL;
}
skb_dst_set(skb, NULL); skb_dst_set(skb, NULL);
process_cpl_msg(chtls_rx_hdr, sk, skb); process_cpl_msg(chtls_rx_hdr, sk, skb);
@ -2105,6 +2117,10 @@ static int chtls_wr_ack(struct chtls_dev *cdev, struct sk_buff *skb)
struct sock *sk; struct sock *sk;
sk = lookup_tid(cdev->tids, hwtid); sk = lookup_tid(cdev->tids, hwtid);
if (unlikely(!sk)) {
pr_err("can't find conn. for hwtid %u.\n", hwtid);
return -EINVAL;
}
process_cpl_msg(chtls_rx_ack, sk, skb); process_cpl_msg(chtls_rx_ack, sk, skb);
return 0; return 0;