[PATCH v2 2/4] modpost: make updating the symbol namespace explicit

From: Matthias Maennich
Date: Fri Oct 18 2019 - 05:32:08 EST


Setting the symbol namespace of a symbol within sym_add_exported feels
displaced and lead to issues in the current implementation of symbol
namespaces. This patch makes updating the namespace an explicit call to
decouple it from adding a symbol to the export list.

Acked-by: Will Deacon <will@xxxxxxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Signed-off-by: Matthias Maennich <maennich@xxxxxxxxxx>
---
scripts/mod/modpost.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index dbfa3997136b..95b1eac656aa 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -385,8 +385,8 @@ static void sym_update_namespace(const char *symname, const char *namespace)
* Add an exported symbol - it may have already been added without a
* CRC, in this case just update the CRC
**/
-static struct symbol *sym_add_exported(const char *name, const char *namespace,
- struct module *mod, enum export export)
+static struct symbol *sym_add_exported(const char *name, struct module *mod,
+ enum export export)
{
struct symbol *s = find_symbol(name);

@@ -402,7 +402,6 @@ static struct symbol *sym_add_exported(const char *name, const char *namespace,
s->module = mod;
}
}
- sym_update_namespace(name, namespace);
s->preloaded = 0;
s->vmlinux = is_vmlinux(mod->name);
s->kernel = 0;
@@ -764,7 +763,8 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
if (strstarts(symname, "__ksymtab_")) {
name = symname + strlen("__ksymtab_");
namespace = sym_extract_namespace(&name);
- sym_add_exported(name, namespace, mod, export);
+ sym_add_exported(name, mod, export);
+ sym_update_namespace(name, namespace);
free(namespace);
}
if (strcmp(symname, "init_module") == 0)
@@ -2472,12 +2472,12 @@ static void read_dump(const char *fname, unsigned int kernel)
mod = new_module(modname);
mod->skip = 1;
}
- s = sym_add_exported(symname, namespace, mod,
- export_no(export));
+ s = sym_add_exported(symname, mod, export_no(export));
s->kernel = kernel;
s->preloaded = 1;
s->is_static = 0;
sym_update_crc(symname, mod, crc, export_no(export));
+ sym_update_namespace(symname, namespace);
}
release_file(file, size);
return;
--
2.23.0.866.gb869b98d4c-goog