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<base href="https://bugs.dpdk.org/">
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<body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - mlx5: segmentation fault with rte_flow_configure function"
href="https://bugs.dpdk.org/show_bug.cgi?id=1199">1199</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>mlx5: segmentation fault with rte_flow_configure function
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>23.03
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Priority</th>
<td>Normal
</td>
</tr>
<tr>
<th>Component</th>
<td>ethdev
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dev@dpdk.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ccm@ccm.ink
</td>
</tr>
<tr>
<th>Target Milestone</th>
<td>---
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<pre class="bz_comment_text">I encountered a segmentation fault when attempting to configure queues for the
asynchronous version of rte_flow using the DPDK rte_flow_configure function and
assigning varying sizes to each queue.
Just like this:
const struct rte_flow_queue_attr *queue_attr[2];
struct rte_flow_queue_attr setup_queue_attr = {.size = 32};
struct rte_flow_queue_attr normal_queue_attr = {.size = 100};
queue_attr[0] = &setup_queue_attr;
queue_attr[1] = &normal_queue_attr;
rte_flow_configure(port_id, &port_attr, 2, queue_attr, &err);
Upon reviewing the source code, I discovered that an attempt was made to free
an unallocated memory, which could potentially result in a segmentation
fault(line 7470).
[mlx5_flow_hw.c]
7226 if (_queue_attr[i]->size != _queue_attr[0]->size) {
rte_errno = EINVAL;
goto err;
7229 }
...
7239 priv->hw_q = mlx5_malloc(MLX5_MEM_ZERO, mem_size,
7240 64, SOCKET_ID_ANY);
...
7444 err:
...
7469 for (i = 0; i < nb_q_updated; i++) {
7470 rte_ring_free(priv->hw_q[i].indir_iq);
rte_ring_free(priv->hw_q[i].indir_cq);
}
7473 mlx5_free(priv->hw_q);
</pre>
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</p>
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