From: Ralf Baechle <ralf@oss.sgi.com>
To: Carsten Langgaard <carstenl@mips.com>
Cc: Atsushi Nemoto <nemoto@toshiba-tops.co.jp>, linux-mips@oss.sgi.com
Subject: Re: setup_frame() failure
Date: Mon, 10 Sep 2001 11:19:46 +0200 [thread overview]
Message-ID: <20010910111946.A6479@dea.linux-mips.net> (raw)
In-Reply-To: <3B9C6B81.94FB616@mips.com>; from carstenl@mips.com on Mon, Sep 10, 2001 at 09:28:02AM +0200
On Mon, Sep 10, 2001 at 09:28:02AM +0200, Carsten Langgaard wrote:
> I like the printout then getting a Reserved Instruction Exception, it
> indicates a problem and things are much easier to debug when getting
> such messages. So it would be a pity, if we need to get rid of that.
A denial of service can be constructed from such printout, so this can't
stay in an release version. Think of what
#include <signal.h>
static void si(void) { }
int main(int argc, char *argv[])
{
signal(SIGILL, sh);
while(1)
asm volatile("mfc0 $0, $0");
}
would do if each exception would result in a line in syslog.
Ralf
prev parent reply other threads:[~2001-09-10 16:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-07 11:26 setup_frame() failure Atsushi Nemoto
2001-09-07 23:36 ` Ralf Baechle
2001-09-10 2:44 ` Atsushi Nemoto
2001-09-12 4:09 ` Atsushi Nemoto
2001-09-13 1:11 ` Ralf Baechle
2001-09-14 2:16 ` Atsushi Nemoto
2001-09-14 20:14 ` Ralf Baechle
2001-09-17 3:28 ` Atsushi Nemoto
2001-09-10 7:28 ` Carsten Langgaard
2001-09-10 9:19 ` Ralf Baechle [this message]
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