linux-hardening - Re: [PATCH 000/141] Fix fall-through warnings for Clang

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Message-ID: <c3371b7c15ed30b92e9bb8609ff65bdaa0ef61fa.camel@HansenPartnership.com>
Date:   Sun, 22 Nov 2020 15:04:36 -0800
From:   James Bottomley <James.Bottomley@...senPartnership.com>
To:     Finn Thain <fthain@...egraphics.com.au>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
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Subject: Re: [PATCH 000/141] Fix fall-through warnings for Clang

On Mon, 2020-11-23 at 09:54 +1100, Finn Thain wrote:
> But is anyone keeping score of the regressions? If unreported bugs
> count, what about unreported regressions?

Well, I was curious about the former (obviously no tool will tell me
about the latter), so I asked git what patches had a fall-through
series named in a fixes tag and these three popped out:

9cf51446e686 bpf, powerpc: Fix misuse of fallthrough in bpf_jit_comp()
6a9dc5fd6170 lib: Revert use of fallthrough pseudo-keyword in lib/
91dbd73a1739 mips/oprofile: Fix fallthrough placement

I don't think any of these is fixing a significant problem, but they
did cause someone time and trouble to investigate.

James