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Date:   Mon, 10 Jun 2019 09:38:03 +0800
From:   Joseph Qi <joseph.qi@...ux.alibaba.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Nadav Amit <namit@...are.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        the arch/x86 maintainers <x86@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Caspar Zhang <caspar@...ux.alibaba.com>,
        jiufei Xue <jiufei.xue@...ux.alibaba.com>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [bug report][stable] kernel tried to execute NX-protected page -
 exploit attempt? (uid: 0)

Confirmed the following 3 upstream commits can resolve this issue:
d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines
3c0dab44e227 x86/ftrace: Set trampoline pages as executable
7298e24f9042 x86/kprobes: Set instruction page as executable

And they are all included in stable 4.19.49.

Thanks,
Joseph

On 19/6/9 22:50, Greg KH wrote:
> On Sun, Jun 09, 2019 at 09:10:45PM +0800, Joseph Qi wrote:
>> Hi Nadav,
>> Thanks for the comments.
>> I'll test the 3 patches in the mentioned thread.
> 
> This should all be fixed in the latest release that happened today.  If
> not, please let us know.
> 
> thanks,
> 
> greg k-h
> 

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