linux-kernel - Re: [PATCH] fault-inject: Enable stacktrace filter for x86-64

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Message-ID: <87a64too2r.fsf@cloudflare.com>
Date:   Mon, 14 Nov 2022 10:56:26 +0100
From:   Jakub Sitnicki <jakub@...udflare.com>
To:     Akinobu Mita <akinobu.mita@...il.com>
Cc:     linux-kernel@...r.kernel.org, kernel-team@...udflare.com,
        linux-kbuild@...r.kernel.org, x86@...nel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Wei Yongjun <weiyongjun1@...wei.com>
Subject: Re: [PATCH] fault-inject: Enable stacktrace filter for x86-64

On Sat, Nov 12, 2022 at 01:41 AM +09, Akinobu Mita wrote:
> 2022年11月10日(木) 20:30 Jakub Sitnicki <jakub@...udflare.com>:
>>
>> Stacktrace filtering for fault injection has been disabled on x86-64 since
>> 2007 due to the lack of a DWARF unwinder. See commit 6d690dcac92a ("fault
>> injection: disable stacktrace filter for x86-64").
>>
>> In 2017, the ORC unwider, an alternative to DWARF unwinder has been added
>> in commit ee9f8fce9964 ("x86/unwind: Add the ORC unwinder").
>>
>> We can now re-enable the stacktrace filter for x86-64.
>
> The same change by Wei Yongjun is already in the linux-next via -mm tree.
>
> But thank you for the good explanation.

Thanks for letting me know. Will check linux-next next time.

Please ignore my patch. Sorry for the noise.