Re: [PATCH] x86/dumpstack: Dump user space code correctly again

[H.J. Lu]

On Wed, Jul 22, 2020 at 12:47 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> "H.J. Lu" <hjl.tools@xxxxxxxxx> writes:
> > On Wed, Jul 22, 2020 at 10:54 AM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> >> +       if (copy_code(regs, opcodes, prologue, sizeof(opcodes))) {
> >>                 printk("%sCode: Bad RIP value.\n", loglvl);
> >>         } else {
> >>                 printk("%sCode: %" __stringify(PROLOGUE_SIZE) "ph <%02x> %"
> >
> > Add a kerel self test?
>
> Care to whip one up?
>

Can we count "dmesg" to always dump opcode?

-- 
H.J.