Re: [PATCH V2] pstore/ftrace: Factor KASLR offset in the core kernel instruction addresses

[Guilherme G. Piccoli]

On 09/04/2026 13:19, Kees Cook wrote:
> On Thu, 09 Apr 2026 12:12:29 -0300, Guilherme G. Piccoli wrote:
>> The pstore ftrace frontend works by purely collecting the
>> instruction address, saving it on the persistent area through
>> the backend and when the log is read, on next boot for example,
>> the address is then resolved by using the regular printk symbol
>> lookup (%pS for example).
>>
>> Problem: if we are running a relocatable kernel with KASLR enabled,
>> this is a recipe for failure in the symbol resolution on next boots,
>> since the addresses are offset'ed by the KASLR address. So, naturally
>> the way to go is factor the KASLR address out of instruction address
>> collection, and adding the fresh offset when resolving the symbol
>> on future boots.
>>
>> [...]
> 
> Applied to for-next/pstore, thanks!
> 
> [1/1] pstore/ftrace: Factor KASLR offset in the core kernel instruction addresses
>       https://git.kernel.org/kees/c/187e3865f298
> 
> Take care,
> 

Closing the loop: due to a problem reported by the kernel robot in the
V1, patch was removed from the for-next/pstore tree;

V3 here:
https://lore.kernel.org/r/20260410205848.2607169-1-gpiccoli@xxxxxxxxxx/

Thanks,


Guilherme