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[slam] Fix resource leak on error path 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/58/merge
Michael Brown 2017-03-21 14:53:13 +02:00
parent 8963193cda
commit 60561d0f3d
1 changed files with 10 additions and 4 deletions
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14
src/net/udp/slam.c
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@ -266,7 +266,8 @@ static int slam_tx_nack ( struct slam_request *slam ) {
if ( ! iobuf ) { if ( ! iobuf ) {
DBGC ( slam, "SLAM %p could not allocate I/O buffer\n", DBGC ( slam, "SLAM %p could not allocate I/O buffer\n",
slam ); slam );
return -ENOMEM; rc = -ENOMEM;
goto err_alloc;
} }
/* Construct NACK. We always request only a single packet; /* Construct NACK. We always request only a single packet;
@ -294,14 +295,19 @@ static int slam_tx_nack ( struct slam_request *slam ) {
"0-%ld\n", slam, ( num_blocks - 1 ) ); "0-%ld\n", slam, ( num_blocks - 1 ) );
} }
if ( ( rc = slam_put_value ( slam, iobuf, first_block ) ) != 0 ) if ( ( rc = slam_put_value ( slam, iobuf, first_block ) ) != 0 )
return rc; goto err_put_value;
if ( ( rc = slam_put_value ( slam, iobuf, num_blocks ) ) != 0 ) if ( ( rc = slam_put_value ( slam, iobuf, num_blocks ) ) != 0 )
return rc; goto err_put_value;
nul = iob_put ( iobuf, 1 ); nul = iob_put ( iobuf, 1 );
*nul = 0; *nul = 0;
/* Transmit packet */ /* Transmit packet */
return xfer_deliver_iob ( &slam->socket, iobuf ); return xfer_deliver_iob ( &slam->socket, iob_disown ( iobuf ) );
err_put_value:
free_iob ( iobuf );
err_alloc:
return rc;
} }
/** /**