From: Lee Jones <lee.jones@linaro.org>
To: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
syzbot <syzbot+84fe685c02cd112a2ac3@syzkaller.appspotmail.com>,
bp@alien8.de, hpa@zytor.com, inglorion@google.com,
linux-kernel@vger.kernel.org, mingo@redhat.com,
syzkaller-bugs@googlegroups.com, tglx@linutronix.de,
x86@kernel.org, Andy Lutomirski <luto@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
tkjos@google.com
Subject: Re: [syzbot] KASAN: stack-out-of-bounds Read in profile_pc
Date: Mon, 11 Oct 2021 14:07:15 +0100 [thread overview]
Message-ID: <YWQ3AzF+q2xeyQ/p@google.com> (raw)
In-Reply-To: <0b71d4f9-f707-3d39-c358-7c06c5689a9d@linux.intel.com>
On Thu, 03 Jun 2021, Andi Kleen wrote:
>
> > True, ftrace does have function profiling (function_profile_enabled).
> >
> > Steve, is there a way to enable that on the kernel cmdline?
>
> That's not really comparable. function profiling has a lot more overhead.
> Also there is various code which has ftrace instrumentation disabled.
>
> I don't think why you want to kill the old profiler. It's rarely used, but
> when you need it usually works. It's always good to have simple fall backs.
> And it's not that it's a lot of difficult code.
sysbot is still sending out reports on this:
https://syzkaller.appspot.com/bug?id=00c965d957410afc0d40cac5343064e0a98b9ecd
Are you guys still planning on sending out a fix?
Is there anything I can do to help?
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2021-10-11 13:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-31 7:15 [syzbot] KASAN: stack-out-of-bounds Read in profile_pc syzbot
2021-06-02 23:00 ` Josh Poimboeuf
2021-06-02 23:35 ` Andi Kleen
2021-06-03 13:29 ` Josh Poimboeuf
2021-06-03 13:30 ` Peter Zijlstra
2021-06-03 13:39 ` Josh Poimboeuf
2021-06-03 13:52 ` Andi Kleen
2021-10-11 13:07 ` Lee Jones [this message]
2021-10-11 14:43 ` Steven Rostedt
2021-10-11 17:10 ` Dmitry Vyukov
2021-10-11 17:30 ` Josh Poimboeuf
2021-06-03 8:02 ` syzbot
2024-08-01 3:16 ` [syzbot] [kernel?] " syzbot
2024-10-27 10:15 ` Tetsuo Handa
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