Re: [PATCH 0/2] vsprintf: Don't leak pointers
Petr Mladek <[email protected]>
| Newsgroups | org.kernel.vger.linux-hardening,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Fri 2026-08-14 12:56:47, Andrew Morton wrote: > On Fri, 14 Aug 2026 16:48:52 +0200 Sebastian Andrzej Siewior <[email protected]> wrote: > > > It is possible to leak pointers via %ps without KALLSYMS enabled. > > With KALLSYMS pointers can be leaked if they can not be resolved. > > > > The tiny series has two patches, one for each issue. > > > > Thanks. > > fwiw, Sashiko flagged a few possible issues: > https://sashiko.dev/#/patchset/[email protected] Sashiko basically complains about that this might make dump_stack(), panics, and oopses useless on systems without KALLSYMS which is typical on embedded systems. IMHO, it is a good point. What about using default_pointer() resp. %p as the fallback? It would allow to see the pointers with "no_hash_pointers" kernel parameter. Best Regards, Petr