On Mon, Apr 05, 2021 at 05:11:13PM +0300, Sergey Shtylyov wrote:
On 4/5/21 4:40 PM, Greg Kroah-Hartman wrote:
[...]
[ Upstream commit 705e9195187d85249fbb0eaa844b1604a98fbc9a ]
The 'reason' variable in module_sig_check() points to 3 strings across
the *switch* statement, all needlessly starting with the same text.
Let's put the starting text into the pr_notice() call -- it saves 21
bytes of the object code (x86 gcc 10.2.1).
Suggested-by: Joe Perches <joe@xxxxxxxxxxx>
Reviewed-by: Miroslav Benes <mbenes@xxxxxxx>
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxxxxxxxx>
Signed-off-by: Jessica Yu <jeyu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
kernel/module.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/kernel/module.c b/kernel/module.c
index ab1f97cfe18d..9fe3e9b85348 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2908,16 +2908,17 @@ static int module_sig_check(struct load_info *info, int flags)
* enforcing, certain errors are non-fatal.
*/
case -ENODATA:
- reason = "Loading of unsigned module";
+ reason = "unsigned module";
goto decide;
case -ENOPKG:
- reason = "Loading of module with unsupported crypto";
+ reason = "module with unsupported crypto";
goto decide;
case -ENOKEY:
- reason = "Loading of module with unavailable key";
+ reason = "module with unavailable key";
decide:
if (is_module_sig_enforced()) {
- pr_notice("%s is rejected\n", reason);
+ pr_notice("%s: loading of %s is rejected\n",
+ info->name, reason);
Mhm, in 5.4 there was no printing of 'info->name'...
Is that now a problem?
Looking at 5.4.y, it probably shouldn't be a problem... but I had to go and look. :-)
I've found a simple commit that added 'info->name' printing (perhaps should also be
considered for inclusion?):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e9f35f634e099894f4d6c3b039cd3de5281ee637
Ah yes, looks like I squashed it in by mistake. I'll fix it up in the
queue. Thanks!
--
Thanks,
Sasha
