<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/118150>118150</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            More granular UBSAN Frame based filtering
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          mariadb-RoelVandePaar
      </td>
    </tr>
</table>

<pre>
    Assume we have stack like this (obtained using `export UBSAN_OPTIONS=print_stacktrace=1:report_error_type=1`):

```
/test/10.6_dbg_san/mysys/mf_keycache.c:5950:11: runtime error: call to function init_simple_key_cache through pointer to incorrect function type 'int (*)(void *, unsigned int, unsigned long, unsigned int, unsigned int, unsigned int)'
/test/10.6_dbg_san/mysys/mf_keycache.c:480: note: init_simple_key_cache defined here
    #0 0x564b85abc73c in init_key_cache_internal /test/10.6_dbg_san/mysys/mf_keycache.c:5950:11
 #1 0x564b85abbc61 in init_key_cache /test/10.6_dbg_san/mysys/mf_keycache.c:6010:10
    #2 0x564b81e7a80c in ha_init_key_cache /test/10.6_dbg_san/sql/handler.cc:6135:5
    #3 0x564b7f07226f in process_key_caches(int (*)(char const*, st_key_cache*, void*), void*) /test/10.6_dbg_san/sql/keycaches.cc:180:12
    #4 0x564b7f0229f7 in init_server_components() /test/10.6_dbg_san/sql/mysqld.cc:5143:3
    #5 0x564b7f016ab0 in mysqld_main(int, char**) /test/10.6_dbg_san/sql/mysqld.cc:5806:7
    #6 0x564b7f001863 in main /test/10.6_dbg_san/sql/main.cc:34:10
    #7 0x14f7dde2a1c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #8 0x14f7dde2a28a in __libc_start_main csu/../csu/libc-start.c:360:3
    #9 0x564b7ef26034 in _start (/test/UBASAN_MD271124-mariadb-10.6.21-linux-x86_64-dbg/bin/mariadbd+0x3eb8034) (BuildId: 3cd87cd3953ac9cf3a930328b34dbd55d44c8146)
 
SUMMARY: UndefinedBehaviorSanitizer: function-type-mismatch /test/10.6_dbg_san/mysys/mf_keycache.c:5950:11 
```
Then we can add a `function:init_key_cache_internal` UBSAN runtime supression in some text file like `UBSAN.filter` and use the same with `export UBSAN_OPTIONS=suppressions=${HOME}/UBSAN.filter:print_stacktrace=1:report_error_type=1;` etc. 

However, this will filter all stacks which have any reference to `init_key_cache_internal` and as such the filter is significantly too wide. What would be much more helpful is something like:
````
function:init_key_cache_internal->init_key_cache->ha_init_key_cache
```
Or similar. However, there seems to be no way to currently do this. Is there a way to do this, and if not - can it be added please?
</pre>
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