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Re: [PATCH 000/141] Fix fall-through warnings for Clang
- To: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>, Miguel Ojeda <miguel.ojeda.sandonis@xxxxxxxxx>
- From: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 22 Nov 2020 15:04:36 -0800
- Cc: Kees Cook <keescook@xxxxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, "Gustavo A. R. Silva" <gustavoars@xxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, alsa-devel@xxxxxxxxxxxxxxxx, amd-gfx@xxxxxxxxxxxxxxxxxxxxx, bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx, ceph-devel@xxxxxxxxxxxxxxx, cluster-devel@xxxxxxxxxx, coreteam@xxxxxxxxxxxxx, devel@xxxxxxxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxx, drbd-dev@xxxxxxxxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, GR-everest-linux-l2@xxxxxxxxxxx, GR-Linux-NIC-Dev@xxxxxxxxxxx, intel-gfx@xxxxxxxxxxxxxxxxxxxxx, intel-wired-lan@xxxxxxxxxxxxxxxx, keyrings@xxxxxxxxxxxxxxx, linux1394-devel@xxxxxxxxxxxxxxxxxxxxx, linux-acpi@xxxxxxxxxxxxxxx, linux-afs@xxxxxxxxxxxxxxxxxxx, Linux ARM <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, linux-arm-msm@xxxxxxxxxxxxxxx, linux-atm-general@xxxxxxxxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-can@xxxxxxxxxxxxxxx, linux-cifs@xxxxxxxxxxxxxxx, Linux Crypto Mailing List <linux-crypto@xxxxxxxxxxxxxxx>, linux-decnet-user@xxxxxxxxxxxxxxxxxxxxx, Ext4 Developers List <linux-ext4@xxxxxxxxxxxxxxx>, linux-fbdev@xxxxxxxxxxxxxxx, linux-geode@xxxxxxxxxxxxxxxxxxx, linux-gpio@xxxxxxxxxxxxxxx, linux-hams@xxxxxxxxxxxxxxx, linux-hwmon@xxxxxxxxxxxxxxx, linux-i3c@xxxxxxxxxxxxxxxxxxx, linux-ide@xxxxxxxxxxxxxxx, linux-iio@xxxxxxxxxxxxxxx, linux-input <linux-input@xxxxxxxxxxxxxxx>, linux-integrity@xxxxxxxxxxxxxxx, linux-mediatek@xxxxxxxxxxxxxxxxxxx, Linux Media Mailing List <linux-media@xxxxxxxxxxxxxxx>, linux-mmc@xxxxxxxxxxxxxxx, Linux-MM <linux-mm@xxxxxxxxx>, linux-mtd@xxxxxxxxxxxxxxxxxxx, linux-nfs@xxxxxxxxxxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, linux-renesas-soc@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-sctp@xxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx, linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx, linux-usb@xxxxxxxxxxxxxxx, linux-watchdog@xxxxxxxxxxxxxxx, linux-wireless <linux-wireless@xxxxxxxxxxxxxxx>, Network Development <netdev@xxxxxxxxxxxxxxx>, netfilter-devel@xxxxxxxxxxxxxxx, nouveau@xxxxxxxxxxxxxxxxxxxxx, op-tee@xxxxxxxxxxxxxxxxxxxxxxxxx, oss-drivers@xxxxxxxxxxxxx, patches@xxxxxxxxxxxxxxxxxxxxx, rds-devel@xxxxxxxxxxxxxx, reiserfs-devel@xxxxxxxxxxxxxxx, samba-technical@xxxxxxxxxxxxxxx, selinux@xxxxxxxxxxxxxxx, target-devel@xxxxxxxxxxxxxxx, tipc-discussion@xxxxxxxxxxxxxxxxxxxxx, usb-storage@xxxxxxxxxxxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, wcn36xx@xxxxxxxxxxxxxxxxxxx, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-hardening@xxxxxxxxxxxxxxx, Nick Desaulniers <ndesaulniers@xxxxxxxxxx>, Nathan Chancellor <natechancellor@xxxxxxxxx>, Miguel Ojeda <ojeda@xxxxxxxxxx>, Joe Perches <joe@xxxxxxxxxxx>
- Delivery-date: Sun, 22 Nov 2020 23:04:58 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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
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