From: "H. Peter Anvin" <hpa@zytor.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Petr Mladek <pmladek@suse.cz>,
stable@vger.kernel.org
Subject: Re: [RFA][PATCH 1/5] ftrace/x86: Run a sync after fixup on failure
Date: Mon, 03 Mar 2014 14:27:09 -0800 [thread overview]
Message-ID: <531501BD.4070300@zytor.com> (raw)
In-Reply-To: <20140303171816.176ca337@gandalf.local.home>
On 03/03/2014 02:18 PM, Steven Rostedt wrote:
>
> How's this sound:
>
> The second bug was that the removal of the breakpoints required the
> "within()" logic updates instead of accessing the ip address directly.
> As kernel text is mapped read-only when CONFIG_DEBUG_RODATA is set, and
> the removal of the breakpoint is a modification of kernel text.
>
I'd add:
"ftrace_write() includes this, but probe_kernel_write() does not."
-hpa
next prev parent reply other threads:[~2014-03-03 22:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-27 15:46 [RFA][PATCH 0/5] tracing: Ftrace error sync fix and tracepoint warn on failure Steven Rostedt
2014-02-27 15:46 ` [RFA][PATCH 1/5] ftrace/x86: Run a sync after fixup " Steven Rostedt
2014-02-27 15:58 ` Petr Mládek
2014-02-27 16:02 ` Steven Rostedt
2014-03-03 22:12 ` H. Peter Anvin
2014-03-03 22:18 ` Steven Rostedt
2014-03-03 22:27 ` H. Peter Anvin [this message]
2014-03-03 22:31 ` Steven Rostedt
2014-02-27 15:46 ` [RFA][PATCH 2/5] ftrace/x86: One more missing sync after fixup of function modification failure Steven Rostedt
2014-02-27 16:05 ` Steven Rostedt
2014-02-27 16:37 ` Frederic Weisbecker
2014-02-27 17:00 ` Steven Rostedt
2014-02-27 17:19 ` Frederic Weisbecker
2014-02-27 17:35 ` Steven Rostedt
2014-02-27 17:52 ` Frederic Weisbecker
2014-02-27 15:46 ` [RFA][PATCH 3/5] tracing: Do not add event files for modules that fail tracepoints Steven Rostedt
2014-02-27 16:31 ` Mathieu Desnoyers
2014-02-27 15:46 ` [RFA][PATCH 4/5] tracepoint: Do not waste memory on mods with no tracepoints Steven Rostedt
2014-02-27 15:46 ` [RFA][PATCH 5/5] tracepoint: Warn and notify if tracepoints are not loaded due to module taint Steven Rostedt
2014-02-27 16:33 ` Mathieu Desnoyers
2014-02-27 17:06 ` Steven Rostedt
2014-02-27 17:09 ` Steven Rostedt
2014-02-27 17:16 ` Mathieu Desnoyers
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