On 14/10/2024 4:12 pm, Jürgen Groß wrote:
> On 14.10.24 16:57, Andrew Cooper wrote:
>> UBSAN complains:
>>
>> (XEN)
>> ================================================================================
>> (XEN) UBSAN: Undefined behaviour in common/spinlock.c:794:10
>> (XEN) load of address ffff82d040ae24c8 with insufficient space
>> (XEN) for an object of type 'struct lock_profile *'
>> (XEN) ----[ Xen-4.20-unstable x86_64 debug=y ubsan=y Tainted:
>> C ]----
>>
>> This shows up with GCC-14, but not with GCC-12. I have not bisected
>> further.
>>
>> Either way, the types for __lock_profile_{start,end} are incorrect.
>>
>> They are an array of struct lock_profile pointers. Correct the extern's
>> types, and adjust the loop to match.
>>
>> No practical change.
>>
>> Signed-off-by: Andrew Cooper <[email protected]>
>
> Reviewed-by: Juergen Gross <[email protected]>
Thanks, and I've got proper Reported-by tag from the conversation on Matrix.
~Andrew
