Re: Bug#1127612: linux-image-6.12.69+deb13-amd64: hp_bioscfg mm/page_alloc.c:4802 warning

[Mario Limonciello <mario.limonciello@amd.com>]

On 2/16/26 10:18 AM, Paul Kerry wrote:
> 
> Hi Uwe
> 
> Thanks for the reply and information.
> 
> You are correct: when I boot the HP Z2 Tower G9 into the older 
> 6.12.63+deb13-amd64 kernel, the hp_bioscfg module is not loaded which I 
> had not noticed, and running a "modprobe hp_bioscfg" on that older 
> 6.12.63+deb13-amd64 kernel does indeed generate the same dmesg warnings 
> as 6.12.69+deb13-amd64 does, which auto-loads the hp_bioscfg module.
> 
> I've not had any noticeable problems caused by this issue since 
> 6.12.69+deb13-amd64 came out.
> 
> Best regards
> Paul
> 
> 

Hi,

Considering there appears to be a rather large number of attributes on 
this system, maybe we should be using a different memory allocation method?

Something like this:

diff --git a/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c 
b/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
index f346aad8e9d89..72bd6037300ab 100644
--- a/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
+++ b/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
@@ -94,8 +94,11 @@ int hp_alloc_enumeration_data(void)
         bioscfg_drv.enumeration_instances_count =
                 hp_get_instance_count(HP_WMI_BIOS_ENUMERATION_GUID);

-       bioscfg_drv.enumeration_data = 
kcalloc(bioscfg_drv.enumeration_instances_count,
- 
sizeof(*bioscfg_drv.enumeration_data), GFP_KERNEL);
+       if (!bioscfg_drv.enumeration_instances_count)
+               return -EINVAL;
+
+       bioscfg_drv.enumeration_data = 
kvcalloc(bioscfg_drv.enumeration_instances_count,
+ 
sizeof(*bioscfg_drv.enumeration_data), GFP_KERNEL);
         if (!bioscfg_drv.enumeration_data) {
                 bioscfg_drv.enumeration_instances_count = 0;
                 return -ENOMEM;