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esp: Fix misplaced spin_unlock_bh.

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A recent commit moved esp_alloc_tmp() out of a lock
protected region, but forgot to remove the unlock from
the error path. This patch removes the forgotten unlock.
While at it, remove some unneeded error assignments too.

Fixes: fca11ebde3 ("esp4: Reorganize esp_output")
Fixes: 383d0350f2 ("esp6: Reorganize esp_output")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert 2017-04-24 07:33:56 +02:00
parent e2989ee974
commit e892d2d404
2 changed files with 2 additions and 10 deletions
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6
net/ipv4/esp4.c
View File

@ -356,11 +356,8 @@ int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
ivlen = crypto_aead_ivsize(aead);
tmp = esp_alloc_tmp(aead, esp->nfrags + 2, extralen);
if (!tmp) {
spin_unlock_bh(&x->lock);
err = -ENOMEM;
if (!tmp)
goto error;
}
extra = esp_tmp_extra(tmp);
iv = esp_tmp_iv(aead, tmp, extralen);
@ -389,7 +386,6 @@ int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
spin_lock_bh(&x->lock);
if (unlikely(!skb_page_frag_refill(allocsize, pfrag, GFP_ATOMIC))) {
spin_unlock_bh(&x->lock);
err = -ENOMEM;
goto error;
}

6
net/ipv6/esp6.c
View File

@ -330,11 +330,8 @@ int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info
ivlen = crypto_aead_ivsize(aead);
tmp = esp_alloc_tmp(aead, esp->nfrags + 2, seqhilen);
if (!tmp) {
spin_unlock_bh(&x->lock);
err = -ENOMEM;
if (!tmp)
goto error;
}
seqhi = esp_tmp_seqhi(tmp);
iv = esp_tmp_iv(aead, tmp, seqhilen);
@ -362,7 +359,6 @@ int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info
spin_lock_bh(&x->lock);
if (unlikely(!skb_page_frag_refill(allocsize, pfrag, GFP_ATOMIC))) {
spin_unlock_bh(&x->lock);
err = -ENOMEM;
goto error;
}