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

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Date:   Sat, 12 Nov 2022 01:41:53 +0900
From:   Akinobu Mita <akinobu.mita@...il.com>
To:     Jakub Sitnicki <jakub@...udflare.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

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.