[PATCH 6.18 080/752] gendwarfksyms: Fix build on 32-bit hosts

Sasha Levin
2026-02-28T17:49:16Z

From: Sami Tolvanen <samitolvanen@google.com>

[ Upstream commit ddc54f912a551f6eb0bbcfc3880f45fe27a252cb ]

We have interchangeably used unsigned long for some of the types
defined in elfutils, assuming they're always 64-bit. This obviously
fails when building gendwarfksyms on 32-bit hosts. Fix the types.

Reported-by: Michal Suchánek <msuchanek@suse.de>
Closes: https://lore.kernel.org/linux-modules/aRcxzPxtJblVSh1y@kitsune.suse.cz/
Tested-by: Michal Suchánek <msuchanek@suse.de>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
scripts/gendwarfksyms/dwarf.c | 4 +++-
scripts/gendwarfksyms/symbols.c | 5 +++--
2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/scripts/gendwarfksyms/dwarf.c b/scripts/gendwarfksyms/dwarf.c
index 3538a7d9cb070..e76d732f5f602 100644
--- a/scripts/gendwarfksyms/dwarf.c
+++ b/scripts/gendwarfksyms/dwarf.c
@@ -750,6 +750,7 @@ static void process_enumerator_type(struct state *state, struct die *cache,
Dwarf_Die *die)
{
bool overridden = false;
+ unsigned long override;
Dwarf_Word value;

if (stable) {
@@ -761,7 +762,8 @@ static void process_enumerator_type(struct state *state, struct die *cache,
return;

overridden = kabi_get_enumerator_value(
- state->expand.current_fqn, cache->fqn, &value);
+ state->expand.current_fqn, cache->fqn, &override);
+ value = override;
}

process_list_comma(state, cache);
diff --git a/scripts/gendwarfksyms/symbols.c b/scripts/gendwarfksyms/symbols.c
index ecddcb5ffcdfb..42cd27c9cec4f 100644
--- a/scripts/gendwarfksyms/symbols.c
+++ b/scripts/gendwarfksyms/symbols.c
@@ -3,6 +3,7 @@
* Copyright (C) 2024 Google LLC
*/

+#include <inttypes.h>
#include "gendwarfksyms.h"

#define SYMBOL_HASH_BITS 12
@@ -242,7 +243,7 @@ static void elf_for_each_global(int fd, elf_symbol_callback_t func, void *arg)
error("elf_getdata failed: %s", elf_errmsg(-1));

if (shdr->sh_entsize != sym_size)
- error("expected sh_entsize (%lu) to be %zu",
+ error("expected sh_entsize (%" PRIu64 ") to be %zu",
shdr->sh_entsize, sym_size);

nsyms = shdr->sh_size / shdr->sh_entsize;
@@ -292,7 +293,7 @@ static void set_symbol_addr(struct symbol *sym, void *arg)
hash_add(symbol_addrs, &sym->addr_hash,
symbol_addr_hash(&sym->addr));

- debug("%s -> { %u, %lx }", sym->name, sym->addr.section,
+ debug("%s -> { %u, %" PRIx64 " }", sym->name, sym->addr.section,
sym->addr.address);
} else if (sym->addr.section != addr->section ||
sym->addr.address != addr->address) {
--
2.51.0