From: "bibo dot mao at intel dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sources.redhat.com
Subject: [Bug kprobes/2294] current.stp causes NX protection fault on i686 SMP
Date: Thu, 09 Feb 2006 03:22:00 -0000 [thread overview]
Message-ID: <20060209032230.20428.qmail@sourceware.org> (raw)
In-Reply-To: <20060207212024.2294.joshua.i.stone@intel.com>
------- Additional Comments From bibo dot mao at intel dot com 2006-02-09 03:22 -------
In RHEL4-U3 beta 2.6.9-30 version, kernel configuration CONFIG_X86_PAE set as
N, and then current.stp will pass. Can you verify this in 2.6.14-
1.1656_FC4smp.i686 kernel version?
_PAGE_NX is different by CONFIG_X86_PAE option, if PAE is enable, kprobe probed
instruction should be placed in module_alloc() area, but no kprobe stucture.
That is to say, arch_specific_insn structure should be defined as
struct arch_specific_insn {
/* copy of the original instruction */
kprobe_opcode_t *insn;
};
And instruction slot allocation/free will be same with x86_64 architecture.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=2294
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prev parent reply other threads:[~2006-02-09 3:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-07 21:20 [Bug kprobes/2294] New: " joshua dot i dot stone at intel dot com
2006-02-09 3:22 ` bibo dot mao at intel dot com [this message]
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