Quoting Petr Mladek (2021-04-07 08:03:47)

On Tue 2021-03-30 20:05:12, Stephen Boyd wrote:

quoted

Let's make kernel stacktraces easier to identify by including the build
ID[1] of a module if the stacktrace is printing a symbol from a module.
This makes it simpler for developers to locate a kernel module's full
debuginfo for a particular stacktrace. Combined with
scripts/decode_stracktrace.sh, a developer can download the matching
debuginfo from a debuginfod[2] server and find the exact file and line
number for the functions plus offsets in a stacktrace that match the
module. This is especially useful for pstore crash debugging where the
kernel crashes are recorded in something like console-ramoops and the
recovery kernel/modules are different or the debuginfo doesn't exist on
the device due to space concerns (the debuginfo can be too large for
space limited devices).

@@ -359,15 +369,17 @@ int lookup_symbol_attrs(unsigned long addr, unsigned long *size,
 
 /* Look up a kernel symbol and return it in a text buffer. */
 static int __sprint_symbol(char *buffer, unsigned long address,
-                        int symbol_offset, int add_offset)
+                        int symbol_offset, int add_offset, int add_buildid)
 {
      char *modname;
+     const unsigned char *buildid;
      const char *name;
      unsigned long offset, size;
      int len;
 
      address += symbol_offset;
-     name = kallsyms_lookup(address, &size, &offset, &modname, buffer);
+     name = kallsyms_lookup_buildid(address, &size, &offset, &modname, &buildid,
+                                    buffer);
      if (!name)
              return sprintf(buffer, "0x%lx", address - symbol_offset);
 

@@ -379,8 +391,12 @@ static int __sprint_symbol(char *buffer, unsigned long address,
      if (add_offset)
              len += sprintf(buffer + len, "+%#lx/%#lx", offset, size);

Please add something like:

        /* Keep BUILD_ID_SIZE_MAX in sync with the below used %20phN */
        BUILD_BUG_ON(BUILD_ID_SIZE_MAX != 20)

Done. Hopefully the "GNU" string check also fixes this module problem
you're seeing.