[RFC PATCH 07/28] scripts/kallsyms: Avoid 0x0 as the relative base

[Ard Biesheuvel <ardb+git@xxxxxxxxxx>]

From: Ard Biesheuvel <ardb@xxxxxxxxxx>

In some cases, LLVM's lld linker may emit the following symbol into the
symbol table

0000000000000000 ? _GLOBAL_OFFSET_TABLE_

and its presence throws off the relative base logic in kallsyms. Since
0x0 is never a valid relative base, just ignore it.

Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
---
 scripts/kallsyms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 03852da3d249..09757d300a05 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -747,7 +747,7 @@ static void record_relative_base(void)
        unsigned int i;
 
        for (i = 0; i < table_cnt; i++)
-               if (!symbol_absolute(table[i])) {
+               if (table[i]->addr && !symbol_absolute(table[i])) {
                        /*
                         * The table is sorted by address.
                         * Take the first non-absolute symbol value.
-- 
2.46.0.792.g87dc391469-goog