On Fri, 10 Apr 2026 17:49:26 -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/24b8f8dcb9a1
Take care,
--
Kees Cook
