On Mon, Nov 10, 2025 at 02:26:52PM +0100, Petr Mladek wrote:
> > Hi Petr,
> >
> > If I am not mistaken, this is handled safely within the context of
> > module_address_lookup() since f01369239293e ("module: Use RCU in
> > find_kallsyms_symbol()."), no?
>
> The above mention commit fixed an API which is looking only for
> the symbol name. It seems to be used, for example, in kprobe
> or ftrace code.
>
> This patch is fixing another API which is used in vsprintf() for
> printing backtraces. It looks for more information: symbol name,
> module name, and buildid. It needs its own RCU read protection.
Hi Petr,
I see and agree.
--
Aaron Tomlin
