EDAC/skx_common: Fix general protection fault

In the Linux kernel, the following vulnerability has been resolved:

EDAC/skx_common: Fix general protection fault

After loading i10nm_edac (which automatically loads skx_edac_common), if

unload only i10nm_edac, then reload it and perform error injection testing,

a general protection fault may occur:

mce: [Hardware Error]: Machine check events logged

Oops: general protection fault ...

...

Workqueue: events mce_gen_pool_process

RIP: 0010:string+0x53/0xe0

...

Call Trace:

<TASK>

? die_addr+0x37/0x90

? exc_general_protection+0x1e7/0x3f0

? asm_exc_general_protection+0x26/0x30

? string+0x53/0xe0

vsnprintf+0x23e/0x4c0

snprintf+0x4d/0x70

skx_adxl_decode+0x16a/0x330 [skx_edac_common]

skx_mce_check_error.part.0+0xf8/0x220 [skx_edac_common]

skx_mce_check_error+0x17/0x20 [skx_edac_common]

...

The issue arose was because the variable 'adxl_component_count' (inside

skx_edac_common), which counts the ADXL components, was not reset. During

the reloading of i10nm_edac, the count was incremented by the actual number

of ADXL components again, resulting in a count that was double the real

number of ADXL components. This led to an out-of-bounds reference to the

ADXL component array, causing the general protection fault above.

Fix this issue by resetting the 'adxl_component_count' in adxl_put(),

which is called during the unloading of {skx,i10nm}_edac.