<html>
    <head>
      <base href="https://bugs.dpdk.org/">
    </head>
    <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 - net/mlx5 warnings when build with lto"
   href="https://bugs.dpdk.org/show_bug.cgi?id=1709">1709</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>net/mlx5 warnings when build with lto
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DPDK
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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">Suspect that temporary buffer may not be big enough.
LTO enables more inlining and therefore more bounds checking.

[3511/3591] Linking target drivers/librte_net_mlx5.so.25.2

In function ‘mlx5dr_action_prepare_decap_l3_data’,
    inlined from ‘mlx5dr_action_handle_tunnel_l3_to_l2’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2151:3,
    inlined from ‘mlx5dr_action_create_reformat_hws’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2221:9,
    inlined from ‘mlx5dr_action_create_reformat’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2278:8:
../drivers/net/mlx5/hws/mlx5dr_action.c:3630:17: warning: writing 4 bytes into
a region of size 0 [-Wstringop-overflow=]
 3630 |                 memcpy(dst, e_src, MLX5DR_ACTION_INLINE_DATA_SIZE); /*
data */
      |                 ^
../drivers/net/mlx5/hws/mlx5dr_action.c: In function
‘mlx5dr_action_create_reformat’:
../drivers/net/mlx5/hws/mlx5dr_action.c:2131:17: note: at offset [76, 524236]
into destination object ‘mh_data’ of size 64
 2131 |         uint8_t mh_data[MLX5DR_ACTION_REFORMAT_DATA_SIZE] = {0};
      |                 ^
In function ‘mlx5dr_action_prepare_decap_l3_data’,
    inlined from ‘mlx5dr_action_handle_tunnel_l3_to_l2’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2151:3,
    inlined from ‘mlx5dr_action_create_reformat_hws’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2221:9,
    inlined from ‘mlx5dr_action_create_reformat’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2278:8:
../drivers/net/mlx5/hws/mlx5dr_action.c:3630:17: warning: writing 4 bytes into
a region of size 0 [-Wstringop-overflow=]
 3630 |                 memcpy(dst, e_src, MLX5DR_ACTION_INLINE_DATA_SIZE); /*
data */
      |                 ^
../drivers/net/mlx5/hws/mlx5dr_action.c: In function
‘mlx5dr_action_create_reformat’:
../drivers/net/mlx5/hws/mlx5dr_action.c:2131:17: note: at offset [84, 524244]
into destination object ‘mh_data’ of size 64
 2131 |         uint8_t mh_data[MLX5DR_ACTION_REFORMAT_DATA_SIZE] = {0};
      |                 ^
In function ‘mlx5dr_action_prepare_decap_l3_data’,
    inlined from ‘mlx5dr_action_handle_tunnel_l3_to_l2’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2151:3,
    inlined from ‘mlx5dr_action_create_reformat_hws’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2221:9,
    inlined from ‘mlx5dr_action_create_reformat’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2278:8:
../drivers/net/mlx5/hws/mlx5dr_action.c:3630:17: warning: writing 4 bytes into
a region of size 0 [-Wstringop-overflow=]
 3630 |                 memcpy(dst, e_src, MLX5DR_ACTION_INLINE_DATA_SIZE); /*
data */
      |                 ^
../drivers/net/mlx5/hws/mlx5dr_action.c: In function
‘mlx5dr_action_create_reformat’:
../drivers/net/mlx5/hws/mlx5dr_action.c:2131:17: note: at offset [92, 524252]
into destination object ‘mh_data’ of size 64
 2131 |         uint8_t mh_data[MLX5DR_ACTION_REFORMAT_DATA_SIZE] = {0};
      |                 ^
In function ‘mlx5dr_action_prepare_decap_l3_data’,
    inlined from ‘mlx5dr_action_handle_tunnel_l3_to_l2’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2151:3,
    inlined from ‘mlx5dr_action_create_reformat_hws’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2221:9,
    inlined from ‘mlx5dr_action_create_reformat’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2278:8:
../drivers/net/mlx5/hws/mlx5dr_action.c:3630:17: warning: writing 4 bytes into
a region of size 0 [-Wstringop-overflow=]
 3630 |                 memcpy(dst, e_src, MLX5DR_ACTION_INLINE_DATA_SIZE); /*
data */
      |                 ^
../drivers/net/mlx5/hws/mlx5dr_action.c: In function
‘mlx5dr_action_create_reformat’:
../drivers/net/mlx5/hws/mlx5dr_action.c:2131:17: note: at offset [100, 524260]
into destination object ‘mh_data’ of size 64
 2131 |         uint8_t mh_data[MLX5DR_ACTION_REFORMAT_DATA_SIZE] = {0};
      |                 ^
In function ‘mlx5dr_action_prepare_decap_l3_data’,
    inlined from ‘mlx5dr_action_handle_tunnel_l3_to_l2’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2151:3,
    inlined from ‘mlx5dr_action_create_reformat_hws’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2221:9,
    inlined from ‘mlx5dr_action_create_reformat’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2278:8:
../drivers/net/mlx5/hws/mlx5dr_action.c:3630:17: warning: writing 4 bytes into
a region of size 0 [-Wstringop-overflow=]
 3630 |                 memcpy(dst, e_src, MLX5DR_ACTION_INLINE_DATA_SIZE); /*
data */
      |                 ^
../drivers/net/mlx5/hws/mlx5dr_action.c: In function
‘mlx5dr_action_create_reformat’:
../drivers/net/mlx5/hws/mlx5dr_action.c:2131:17: note: at offset [108, 524268]
into destination object ‘mh_data’ of size 64
 2131 |         uint8_t mh_data[MLX5DR_ACTION_REFORMAT_DATA_SIZE] = {0};
      |                 ^
In function ‘mlx5dr_action_prepare_decap_l3_data’,
    inlined from ‘mlx5dr_action_handle_tunnel_l3_to_l2’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2151:3,
    inlined from ‘mlx5dr_action_create_reformat_hws’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2221:9,
    inlined from ‘mlx5dr_action_create_reformat’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2278:8:
../drivers/net/mlx5/hws/mlx5dr_action.c:3630:17: warning: writing 4 bytes into
a region of size 0 [-Wstringop-overflow=]
 3630 |                 memcpy(dst, e_src, MLX5DR_ACTION_INLINE_DATA_SIZE); /*
data */
      |                 ^
../drivers/net/mlx5/hws/mlx5dr_action.c: In function
‘mlx5dr_action_create_reformat’:
../drivers/net/mlx5/hws/mlx5dr_action.c:2131:17: note: at offset [116, 524276]
into destination object ‘mh_data’ of size 64
 2131 |         uint8_t mh_data[MLX5DR_ACTION_REFORMAT_DATA_SIZE] = {0};
      |                 ^
In function ‘mlx5dr_action_prepare_decap_l3_data’,
    inlined from ‘mlx5dr_action_handle_tunnel_l3_to_l2’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2151:3,
    inlined from ‘mlx5dr_action_create_reformat_hws’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2221:9,
    inlined from ‘mlx5dr_action_create_reformat’ at
../drivers/net/mlx5/hws/mlx5dr_action.c:2278:8:
../drivers/net/mlx5/hws/mlx5dr_action.c:3630:17: warning: writing 4 bytes into
a region of size 0 [-Wstringop-overflow=]
 3630 |                 memcpy(dst, e_src, MLX5DR_ACTION_INLINE_DATA_SIZE); /*
data */
      |                 ^
../drivers/net/mlx5/hws/mlx5dr_action.c: In function
‘mlx5dr_action_create_reformat’:
../drivers/net/mlx5/hws/mlx5dr_action.c:2131:17: note: at offset [124, 524284]
into destination object ‘mh_data’ of size 64
 2131 |         uint8_t mh_data[MLX5DR_ACTION_REFORMAT_DATA_SIZE] = {0};
      |                 ^
          </pre>
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