7 May
2019
7 May
'19
9:24 p.m.
On Tue, 7 May 2019 12:21:59 -0500 Josh Poimboeuf jpoimboe@redhat.com wrote:
regs->sp is *undefined* on x86-32. We're damning our future selves to have to always remember to use that darn kernel_stack_pointer() helper for eternity just because of x86-32.
And there's been several times I forget that regs->sp can not be read directly. Especially most of my bug reports are for x86_64 these days. But when I had that seldom x86_32 one, and go debugging, I would print out "regs->sp" and then the system would crash. And I spend some time wondering why?
It's been a bane of mine for some time.
-- Steve