From 6a8df0821f67fab207a64dd9540b82dc03b45ec9 Mon Sep 17 00:00:00 2001 From: Sergey Shtylyov Date: Sat, 31 Oct 2020 23:09:31 +0300 Subject: [PATCH] module: avoid *goto*s in module_sig_check() [ Upstream commit 10ccd1abb808599a6dc7c9389560016ea3568085 ] Let's move the common handling of the non-fatal errors after the *switch* statement -- this avoids *goto*s inside that *switch*... Suggested-by: Joe Perches Reviewed-by: Miroslav Benes Signed-off-by: Sergey Shtylyov Signed-off-by: Jessica Yu Signed-off-by: Sasha Levin --- kernel/module.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/kernel/module.c b/kernel/module.c index 9fe3e9b85348..8d1def62a415 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2909,20 +2909,13 @@ static int module_sig_check(struct load_info *info, int flags) */ case -ENODATA: reason = "unsigned module"; - goto decide; + break; case -ENOPKG: reason = "module with unsupported crypto"; - goto decide; + break; case -ENOKEY: reason = "module with unavailable key"; - decide: - if (is_module_sig_enforced()) { - pr_notice("%s: loading of %s is rejected\n", - info->name, reason); - return -EKEYREJECTED; - } - - return security_locked_down(LOCKDOWN_MODULE_SIGNATURE); + break; /* All other errors are fatal, including nomem, unparseable * signatures and signature check failures - even if signatures @@ -2931,6 +2924,13 @@ static int module_sig_check(struct load_info *info, int flags) default: return err; } + + if (is_module_sig_enforced()) { + pr_notice("%s: loading of %s is rejected\n", info->name, reason); + return -EKEYREJECTED; + } + + return security_locked_down(LOCKDOWN_MODULE_SIGNATURE); } #else /* !CONFIG_MODULE_SIG */ static int module_sig_check(struct load_info *info, int flags)