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From:   Akinobu Mita <akinobu.mita@gmail.com>
Date:   Sat, 12 Nov 2022 01:41:53 +0900
Message-ID: <CAC5umyhw=V1O_cC+Q4=XSye7htJ1aSAhMmbqSe7TngsohhuQ6w@mail.gmail.com>
Subject: Re: [PATCH] fault-inject: Enable stacktrace filter for x86-64
To:     Jakub Sitnicki <jakub@cloudflare.com>
Cc:     linux-kernel@vger.kernel.org, kernel-team@cloudflare.com,
        linux-kbuild@vger.kernel.org, x86@kernel.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Wei Yongjun <weiyongjun1@huawei.com>
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2022=E5=B9=B411=E6=9C=8810=E6=97=A5(=E6=9C=A8) 20:30 Jakub Sitnicki <jakub@=
cloudflare.com>:
>
> Stacktrace filtering for fault injection has been disabled on x86-64 sinc=
e
> 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.