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rtl8139: fix Pointer to local outside scope 

Coverity spot:
 Assigning: iov = struct iovec [3]({{buf, 12UL},
                       {(void *)dot1q_buf, 4UL},
                       {buf + 12, size - 12}})
 (address of temporary variable of type struct iovec [3]).
 out_of_scope: Temporary variable of type struct iovec [3] goes out of scope.

Pointer to local outside scope (RETURN_LOCAL)
use_invalid:
 Using iov, which points to an out-of-scope temporary variable of type struct iovec [3].

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
master
Gonglei 2014-11-20 19:35:03 +08:00 committed by Stefan Hajnoczi
parent 7b50d00911
commit b0af844007
1 changed files with 4 additions and 0 deletions
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4
hw/net/rtl8139.c
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@ -1775,6 +1775,7 @@ static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size,
int do_interrupt, const uint8_t *dot1q_buf)
{
struct iovec *iov = NULL;
struct iovec vlan_iov[3];
if (!size)
{
@ -1789,6 +1790,9 @@ static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size,
{ .iov_base = buf + ETHER_ADDR_LEN * 2,
.iov_len = size - ETHER_ADDR_LEN * 2 },
};
memcpy(vlan_iov, iov, sizeof(vlan_iov));
iov = vlan_iov;
}
if (TxLoopBack == (s->TxConfig & TxLoopBack))