This is the mail archive of the
systemtap@sourceware.org
mailing list for the systemtap project.
Re: [PATCH -tip v3 00/23] kprobes: introduce NOKPROBE_SYMBOL() and general cleaning of kprobe blacklist
- From: fche at redhat dot com (Frank Ch. Eigler)
- To: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>
- Cc: Ingo Molnar <mingo at kernel dot org>, linux-arch at vger dot kernel dot org, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, Sandeepa Prabhu <sandeepa dot prabhu at linaro dot org>, x86 at kernel dot org, lkml <linux-kernel at vger dot kernel dot org>, "Steven Rostedt (Red Hat)" <rostedt at goodmis dot org>, virtualization at lists dot linux-foundation dot org, systemtap at sourceware dot org, "David S. Miller" <davem at davemloft dot net>
- Date: Wed, 20 Nov 2013 09:26:59 -0500
- Subject: Re: [PATCH -tip v3 00/23] kprobes: introduce NOKPROBE_SYMBOL() and general cleaning of kprobe blacklist
- Authentication-results: sourceware.org; auth=none
- References: <20131120042148 dot 15296 dot 88360 dot stgit at kbuild-fedora dot novalocal>
masami.hiramatsu.pt wrote:
> [...] This series also includes a change which prohibits probing on
> the address in .entry.text because the code is used for very
> low-level sensitive interrupt/syscall entries. Probing such code may
> cause unexpected result (actually most of that area is already in
> the kprobe blacklist). So I've decide to prohibit probing all of
> them. [...]
Does this new blacklist cover enough that the kernel now survives a
broadly wildcarded perf-probe, e.g. over e.g. all of its kallsyms?
- FChE