[PATCH 1/1] lib: Solve issue of loading SMBIOS table

[Sunny Wang]

Hi Alex,
Sorry for the confusion. This patch is going to fix a different issue.
The symptom of this issue is the dmicheck failures. We didn’t report a bug for this issue because Edhaya already has a fix.
The symptom of the https://bugs.launchpad.net/bugs/1947786 is that the testing stops at dmicheck test. We haven’t completely root caused this issue yet, so I reported this bug for getting help from other FWTS experts.

Hi Edhaya,
Have you subscribed fwts-devel (https://lists.ubuntu.com/mailman/listinfo/fwts-devel)? If not, this may be the reason why your patch doesn’t go to Alex.  Sorry for that I forgot to mention this in our offline discussion.

Best Regards,
Sunny
From: Alex Hung <alex.hung at canonical.com>
Sent: 20 October 2021 19:42
To: Sunny Wang <Sunny.Wang at arm.com>
Cc: G Edhaya Chandran <Edhaya.Chandran at arm.com>; fwts-devel at lists.ubuntu.com; colin.king at canonical.com; ivan.hu at canonical.com; Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud at arm.com>; Paul Yang <Paul.Yang at arm.com>
Subject: Re: [PATCH 1/1] lib: Solve issue of loading SMBIOS table

Hi Sunny,

Thanks for reporting and testing the patch.

Hi Edhaya,

Thanks for submitting patches; however, the patch did not go through. Ex, I couldn't find it @ https://lists.ubuntu.com/archives/fwts-devel/2021-October/thread.html or https://patchwork.ozlabs.org/project/fwts/list/, andI did not receive it myself.

Could you please send it again?

While you are at it, please add "Buglink: https://bugs.launchpad.net/bugs/1947786" to the patch description.

Cheers,
Alex Hung

On Wed, Oct 20, 2021 at 10:02 AM Sunny Wang <Sunny.Wang at arm.com<mailto:Sunny.Wang at arm.com>> wrote:
Tested on an ARM based server system. Thanks for fixing this, Edhaya.

Tested-by: Sunny Wang <sunny.wang at arm.com<mailto:sunny.wang at arm.com>>

-----Original Message-----
From: G Edhaya Chandran <edhaya.chandran at arm.com<mailto:edhaya.chandran at arm.com>>
Sent: 20 October 2021 15:30
To: fwts-devel at lists.ubuntu.com<mailto:fwts-devel at lists.ubuntu.com>
Cc: colin.king at canonical.com<mailto:colin.king at canonical.com>; ivan.hu at canonical.com<mailto:ivan.hu at canonical.com>; alex.hung at canonical.com<mailto:alex.hung at canonical.com>; Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud at arm.com<mailto:Samer.El-Haj-Mahmoud at arm.com>>; G Edhaya Chandran <Edhaya.Chandran at arm.com<mailto:Edhaya.Chandran at arm.com>>; Sunny Wang <Sunny.Wang at arm.com<mailto:Sunny.Wang at arm.com>>; Paul Yang <Paul.Yang at arm.com<mailto:Paul.Yang at arm.com>>
Subject: [PATCH 1/1] lib: Solve issue of loading SMBIOS table

In the case where SMBIOS table is loaded from
/sys/firmware/dmi/tables/smbios_entry_point,
the load fails due to a logical error in the if condition which is
solved below
The load fails with the below logs
dmicheck: Could not find any SMBIOS Table Entry Points.
dmicheck: Cannot find SMBIOS30 table entry.

The issue may have been introduced during the recent refactoring of the
code.

Signed-off-by: Edhaya Chandran <edhaya.chandran at arm.com<mailto:edhaya.chandran at arm.com>>

---
 src/lib/src/fwts_smbios.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/src/fwts_smbios.c b/src/lib/src/fwts_smbios.c
index 8da572e9..6402fad8 100644
--- a/src/lib/src/fwts_smbios.c
+++ b/src/lib/src/fwts_smbios.c
@@ -91,7 +91,7 @@ static void *fwts_smbios_find_entry_uefi(
                }

                if (fwts_load_file("/sys/firmware/dmi/tables/smbios_entry_point", entry, size) == FWTS_OK &&
-                   strncmp((char*)entry, sm, strlen(sm))) {
+                   !strncmp((char*)entry, sm, strlen(sm))) {
                        fwts_log_info(fw, "%s entry loaded from /sys/firmware/dmi/tables/smbios_entry_point\n", smbios);
                        *type  = FWTS_SMBIOS;
                        return addr;
--
2.17.1

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--
Cheers,
Alex Hung
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