Re: [patch] Fix linux-ia64 on SIGILL for deleted breakpoint

Tristan Gingold
2010-07-19T09:04:34Z

On Jul 19, 2010, at 10:58 AM, Jan Kratochvil wrote:

> Hi,
>
> in some cases ia64 can generate SIGILL instead of SIGTRAP. Guessing it is
> a CPU bug instead of Linux kernel bug (but I may be wrong).
> https://bugzilla.redhat.com/show_bug.cgi?id=615538
> http://sources.redhat.com/cgi-bin/cvsweb.cgi/~checkout~/tests/ptrace-tests/tests/ia64-sigill.c?cvsroot=systemtap

This is not a bug but a feature: the immediate of break.b is ignored by the processor.