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[RFC,07/12] module: move check_modinfo() early to early_mod_check()

Message ID 20230311051712.4095040-8-mcgrof@kernel.org (mailing list archive)
State New, archived
Headers show
Series module: avoid userspace pressure on unwanted allocations | expand

Commit Message

Luis Chamberlain March 11, 2023, 5:17 a.m. UTC 
This moves check_modinfo() to early_mod_check(). This
doesn't make any functional changes either, as check_modinfo()
was the first call on layout_and_allocate(), so we're just
moving it back one routine and at the end.

This let's us keep separate the checkers from the allocater.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 kernel/module/main.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
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Patch

diff --git a/kernel/module/main.c b/kernel/module/main.c
index 32c92fb69c05..e9c7eb827f0d 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -2284,10 +2284,6 @@  static struct module *layout_and_allocate(struct load_info *info, int flags)
 	unsigned int ndx;
 	int err;
 
-	err = check_modinfo(info->mod, info, flags);
-	if (err)
-		return ERR_PTR(err);
-
 	/* Allow arches to frob section contents and sizes.  */
 	err = module_frob_arch_sections(info->hdr, info->sechdrs,
 					info->secstrings, info->mod);
@@ -2702,7 +2698,11 @@  static int early_mod_check(struct load_info *info, int flags)
 
 	/* Check module struct version now, before we try to use module. */
 	if (!check_modstruct_version(info, info->mod))
-		return ENOEXEC;
+		return -ENOEXEC;
+
+	err = check_modinfo(info->mod, info, flags);
+	if (err)
+		return err;
 
 	return 0;
 }