Re: [PATCH 0/3][RESEND] add support for never printing hashed addresses

Andy Shevchenko
2021-02-10T11:54:07Z

On Wed, Feb 10, 2021 at 10:33 AM Timur Tabi <timur@kernel.org> wrote:
>
> [accidentally sent from the wrong email address, so resending]
>
> [The list of email addresses on CC: is getting quite lengthy,
> so I hope I've included everyone.]
>
> Although hashing addresses printed via printk does make the
> kernel more secure, it interferes with debugging, especially
> with some functions like print_hex_dump() which always uses
> hashed addresses.
>
> To avoid having to choose between %p and %px, it's easier to
> add a kernel command line that treats all %p as %px. This
> encourages developers to use %p more without making debugging
> more difficult.
>
> Patches #1 and #2 upgrade the kselftest framework so that
> it can report on tests that were skipped outright. This
> is needed for the test_printf module which will now skip
> %p hashing tests if hashing is disabled.
>
> Patch #2 upgrades the printf library to check the command
> line. It also updates test_printf().

It's a bit hard in some mailers (like Gmail) to see the different
versions of your patches.
Can you use in the future
- either `git format-patch -v<N> ...`, where <N> is a version
- or `git format-patch --subject-prefix="PATCH vX / RESEND / etc" ...`
?

--
With Best Regards,
Andy Shevchenko