Re: [PATCH 1/2] lib/cmdline_kunit: add test case for memparse()

[Dmitry Antipov]

On Thu, 2026-01-22 at 13:46 +0200, Andy Shevchenko wrote:

> Can we also have one with more than 20 decimal digits?

Hmmm... running simple userspace test,

strtoull("569202370375329612767", ...)

returns ULLONG_MAX (and sets errno to -ERANGE), but

memparse("569202370375329612767", ...)

seems blindly overflows to -2646695909666487329.

I'm strongly suspecting that 'memparse()' should be carefully
tweaked to use 'kstrtoull()' instead of 'simple_strtoull()'.

Dmitry