提交 03766a1d 编写于 作者: O Olaf Kirch 提交者: James Bottomley

[SCSI] iscsi_tcp: stop leaking r2t_info's when the incoming R2T is bad

iscsi_r2t_rsp checks the incoming R2T for sanity, and if it
thinks it's fishy, it will drop it silently. In this case, we
leaked an r2t_info object. If we do this often enough, we run
into a BUG_ON some time later.

Removed r2t wrappers and update patch by Mike Christie
Signed-off-by: NOlaf Kirch <olaf.kirch@oracle.com>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
上级 a8ac6311
......@@ -658,6 +658,8 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
r2t->data_length = be32_to_cpu(rhdr->data_length);
if (r2t->data_length == 0) {
printk(KERN_ERR "iscsi_tcp: invalid R2T with zero data len\n");
__kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
sizeof(void*));
spin_unlock(&session->lock);
return ISCSI_ERR_DATALEN;
}
......@@ -669,10 +671,12 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
r2t->data_offset = be32_to_cpu(rhdr->data_offset);
if (r2t->data_offset + r2t->data_length > scsi_bufflen(ctask->sc)) {
spin_unlock(&session->lock);
printk(KERN_ERR "iscsi_tcp: invalid R2T with data len %u at "
"offset %u and total length %d\n", r2t->data_length,
r2t->data_offset, scsi_bufflen(ctask->sc));
__kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
sizeof(void*));
spin_unlock(&session->lock);
return ISCSI_ERR_DATALEN;
}
......
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