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<body><span class="vcard"><a class="email" href="mailto:baciumariuscristian@yahoo.com" title="Marius-Cristian Baciu (baciumariuscristian@yahoo.com)"> <span class="fn">Marius-Cristian Baciu</span></a>
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<a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - drivers/common/mlx5: mlx5_malloc() called on invalid socket ID when global MR cache is full and rte_extmem_* API is used"
href="https://bugs.dpdk.org/show_bug.cgi?id=1256">bug 1256</a>
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<table border="1" cellspacing="0" cellpadding="8" class="bz_diff_table">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>FIXED
</td>
<td>---
</td>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>UNCONFIRMED
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<b class="bz_comment_head"><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - drivers/common/mlx5: mlx5_malloc() called on invalid socket ID when global MR cache is full and rte_extmem_* API is used"
href="https://bugs.dpdk.org/show_bug.cgi?id=1256#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - drivers/common/mlx5: mlx5_malloc() called on invalid socket ID when global MR cache is full and rte_extmem_* API is used"
href="https://bugs.dpdk.org/show_bug.cgi?id=1256">bug 1256</a>
from <span class="vcard"><a class="email" href="mailto:baciumariuscristian@yahoo.com" title="Marius-Cristian Baciu (baciumariuscristian@yahoo.com)"> <span class="fn">Marius-Cristian Baciu</span></a>
</span>
</b>
<pre class="bz_comment_text">Hi,
Unfortunately that patch only targets a memory socket issue with the ASO
mechanism. However, in my setup ASO is never an issue - I actually do not
believe it is enabled.
To give a little more insight, the problem I am describing manifests on the
data path:
- rte_eth_tx_burst();
- mlx5_tx_burst_*() is called;
- at some later point, in mr_lookup_caches(), mr_btree_lookup() returns
UINT32_MAX because all 256 entries in the cache have been occupied and last
memory registration did not catch an empty slot;
- when mr_lookup_caches() fails, mlx5_mr_create() -> mlx5_mr_create_primary()
is called;
- mlx5_malloc() at line 723 fails because it is called with an inappropriate
socket ID (the socket ID of the memseg list associated with an external buffer
(prior with rte_extmem_register()), EXTERNAL_HEAP_MIN_SOCKET_ID, which does not
actually have a valid heap associated, from which memory could be allocated.
</pre>
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