Re: [PATCH v21 06/26] x86/cet: Add control-protection fault handler

Borislav Petkov
2021-02-24T16:55:49Z

On Wed, Feb 24, 2021 at 08:44:45AM -0800, Yu, Yu-cheng wrote:
> > > + force_sig_fault(SIGSEGV, SEGV_CPERR,
> > > + (void __user *)uprobe_get_trap_addr(regs));
> >
> > Why is this calling an uprobes function?
> >
>
> I will change it to error_get_trap_addr().

"/*
* Posix requires to provide the address of the faulting instruction for
* SIGILL (#UD) and SIGFPE (#DE) in the si_addr member of siginfo_t.
..."

Is yours SIGILL or SIGFPE?

--
Regards/Gruss,
Boris.