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<head>
<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 - warnings in CNXK when built with LTO"
href="https://bugs.dpdk.org/show_bug.cgi?id=1790">1790</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>warnings in CNXK when built with LTO
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>25.07
</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>normal
</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>stephen@networkplumber.org
</td>
</tr>
<tr>
<th>Target Milestone</th>
<td>---
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<pre class="bz_comment_text">If DPDK is built with link time optimization the compiler can see across file
scope and detect more errors like this.
$ meson setup build -Db_lto=true && ninja --quiet -C build
In function ‘parse_flag’,
inlined from ‘kvargs_process_common’ at ../lib/kvargs/rte_kvargs.c:187:9,
inlined from ‘rte_kvargs_process’ at ../lib/kvargs/rte_kvargs.c:203:9,
inlined from ‘cnxk_ethdev_parse_devargs’ at
../drivers/net/cnxk/cnxk_ethdev_devargs.c:371:2:
../drivers/net/cnxk/cnxk_ethdev_devargs.c:166: warning: writing 2 bytes into a
region of size 1 [-Wstringop-overflow=]
166 | *(uint16_t *)extra_args = atoi(value);
../drivers/net/cnxk/cnxk_ethdev_devargs.c: In function
‘cnxk_ethdev_parse_devargs’:
../drivers/net/cnxk/cnxk_ethdev_devargs.c:306:17: note: destination object
‘force_tail_drop’ of size 1
306 | uint8_t force_tail_drop = 0;
| ^
In function ‘parse_flag’,
inlined from ‘kvargs_process_common’ at ../lib/kvargs/rte_kvargs.c:187:9,
inlined from ‘rte_kvargs_process’ at ../lib/kvargs/rte_kvargs.c:203:9,
inlined from ‘cnxk_ethdev_parse_devargs’ at
../drivers/net/cnxk/cnxk_ethdev_devargs.c:372:2:
../drivers/net/cnxk/cnxk_ethdev_devargs.c:166: warning: writing 2 bytes into a
region of size 1 [-Wstringop-overflow=]
166 | *(uint16_t *)extra_args = atoi(value);
../drivers/net/cnxk/cnxk_ethdev_devargs.c: In function
‘cnxk_ethdev_parse_devargs’:
../drivers/net/cnxk/cnxk_ethdev_devargs.c:312:17: note: destination object
‘dis_xqe_drop’ of size 1
312 | uint8_t dis_xqe_drop = 0;
| ^
../drivers/common/cnxk/roc_platform.c: In function ‘irq_config’:
../drivers/common/cnxk/roc_platform.c:55:14: warning: argument to
variable-length array is too large [-Wvla-larger-than=]
55 | char irq_set_buf[MSIX_IRQ_SET_BUF_LEN];
| ^
../drivers/common/cnxk/roc_platform.c:55:14: note: limit is 9223372036854775807
bytes, but argument is 18446744073709551548
../drivers/common/cnxk/roc_platform.c: In function ‘irq_init’:
../drivers/common/cnxk/roc_platform.c:91:14: warning: argument to
variable-length array is too large [-Wvla-larger-than=]
91 | char irq_set_buf[MSIX_IRQ_SET_BUF_LEN];
| ^
../drivers/common/cnxk/roc_platform.c:91:14: note: limit is 9223372036854775807
bytes, but argument is 18446744073709551548
In function ‘roc_ow_reass_inb_sa_init’,
inlined from ‘nix_inl_reass_inb_sa_tbl_setup’ at
../drivers/common/cnxk/roc_nix_inl.c:610:2,
inlined from ‘nix_inl_inb_init’ at
../drivers/common/cnxk/roc_nix_inl.c:1417:8,
inlined from ‘roc_nix_inl_inb_init’ at
../drivers/common/cnxk/roc_nix_inl.c:1439:9:
../drivers/common/cnxk/roc_ie_ow.c:35:9: warning: ‘memset’ writing 808 bytes
into a region of size 1 overflows the destination [-Wstringop-overflow=]
35 | memset(sa, 0, sizeof(struct roc_ow_ipsec_inb_sa));
| ^
In function ‘nix_inl_reass_inb_sa_tbl_setup’,
inlined from ‘nix_inl_inb_init’ at
../drivers/common/cnxk/roc_nix_inl.c:1417:8,
inlined from ‘roc_nix_inl_inb_init’ at
../drivers/common/cnxk/roc_nix_inl.c:1439:9:
../drivers/common/cnxk/roc_nix_inl.c:603:40: note: destination object of size 1
allocated by ‘rte_zmalloc’
603 | nix->inb_sa_base[profile_id] = plt_zmalloc(inb_sa_sz * max_sa,
ROC_NIX_INL_SA_BASE_ALIGN);
|
</pre>
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</p>
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