From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Paolo Abeni <pabeni@redhat.com>
Cc: Naresh Kamboju <naresh.kamboju@linaro.org>,
stable@vger.kernel.org, patches@lists.linux.dev,
linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org,
patches@kernelci.org, lkft-triage@lists.linaro.org,
pavel@denx.de, jonathanh@nvidia.com, f.fainelli@gmail.com,
sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de,
mptcp@lists.linux.dev, Florian Westphal <fw@strlen.de>,
Mat Martineau <mathew.j.martineau@linux.intel.com>,
Matthieu Baerts <matthieu.baerts@tessares.net>,
Anders Roxell <anders.roxell@linaro.org>
Subject: Re: [PATCH 6.1 00/42] 6.1.15-rc1 review
Date: Fri, 3 Mar 2023 14:35:40 +0100 [thread overview]
Message-ID: <ZAH3rLIHE1wIY9c+@kroah.com> (raw)
In-Reply-To: <d593e9434dba16a869ec48fcdfe8a3fe540c8a82.camel@redhat.com>
On Fri, Mar 03, 2023 at 01:41:00PM +0100, Paolo Abeni wrote:
> On Fri, 2023-03-03 at 12:44 +0100, Greg Kroah-Hartman wrote:
> > On Fri, Mar 03, 2023 at 12:39:07PM +0100, Paolo Abeni wrote:
> > > Additionally, some self-tests check for known bugs/regressions. Running
> > > them on older kernel will cause real trouble, and checking for bug
> > > presence in the running kernel would be problematic at best, I think.
> >
> > No, not at all, why wouldn't you want to test for know bugs and
> > regressions and fail? That's a great thing to do, and so you will know
> > to backport those bugfixes to those older kernels if you have to use
> > them.
>
> I'm sorry, I likely was not clear at all. What I mean is that the self-
> test for a bug may trigger e.g. memory corruption on the bugged kernel
> (or more specifically to networking, the infamous, recurring
> "unregister_netdevice: waiting for ...") which in turn could cause
> random failures later.
>
> If that specific case runs on older (unpatched) kernel will screw the
> overall tests results. The same could happen in less-detectable way for
> old bugs non explicitly checked by any test, but still triggered by the
> test-suite. As a consequence I expect that the results observed running
> newer self-tests on older kernel are unreliable.
For the stable/LTS kernel trees, they should _never_ be unreliable,
otherwise that means we have missed a needed fix and so we need to
resolve that.
Which is why I always recommend running the latest selftests on all
older kernels, and have for a very long time now.
thanks,
greg k-h
next prev parent reply other threads:[~2023-03-03 13:35 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-01 18:08 [PATCH 6.1 00/42] 6.1.15-rc1 review Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 01/42] Fix XFRM-I support for nested ESP tunnels Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 02/42] arm64: dts: rockchip: reduce thermal limits on rk3399-pinephone-pro Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 03/42] arm64: dts: rockchip: drop unused LED mode property from rk3328-roc-cc Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 04/42] ARM: dts: rockchip: add power-domains property to dp node on rk3288 Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 05/42] arm64: dts: rockchip: add missing #interrupt-cells to rk356x pcie2x1 Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 06/42] arm64: dts: rockchip: fix probe of analog sound card on rock-3a Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 07/42] HID: elecom: add support for TrackBall 056E:011C Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 08/42] HID: Ignore battery for Elan touchscreen on Asus TP420IA Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 09/42] ACPI: NFIT: fix a potential deadlock during NFIT teardown Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 10/42] pinctrl: amd: Fix debug output for debounce time Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 11/42] btrfs: send: limit number of clones and allocated memory size Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 12/42] arm64: dts: rockchip: align rk3399 DMC OPP table with bindings Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 13/42] ASoC: rt715-sdca: fix clock stop prepare timeout issue Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 14/42] IB/hfi1: Assign npages earlier Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 15/42] powerpc: Dont select ARCH_WANTS_NO_INSTR Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 16/42] ASoC: SOF: amd: Fix for handling spurious interrupts from DSP Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 17/42] ARM: dts: stihxxx-b2120: fix polarity of reset line of tsin0 port Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 18/42] neigh: make sure used and confirmed times are valid Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 19/42] HID: core: Fix deadloop in hid_apply_multiplier Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 20/42] ASoC: codecs: es8326: Fix DTS properties reading Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 21/42] HID: Ignore battery for ELAN touchscreen 29DF on HP Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 22/42] selftests: ocelot: tc_flower_chains: make test_vlan_ingress_modify() more comprehensive Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 23/42] x86/cpu: Add Lunar Lake M Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 24/42] PM: sleep: Avoid using pr_cont() in the tasks freezing code Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 25/42] bpf: bpf_fib_lookup should not return neigh in NUD_FAILED state Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 26/42] net: Remove WARN_ON_ONCE(sk->sk_forward_alloc) from sk_stream_kill_queues() Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 27/42] vc_screen: dont clobber return value in vcs_read Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 28/42] drm/amd/display: Move DCN314 DOMAIN power control to DMCUB Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 29/42] drm/amd/display: Fix race condition in DPIA AUX transfer Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 30/42] usb: dwc3: pci: add support for the Intel Meteor Lake-M Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 31/42] USB: serial: option: add support for VW/Skoda "Carstick LTE" Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 32/42] usb: gadget: u_serial: Add null pointer check in gserial_resume Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 33/42] arm64: dts: uniphier: Fix property name in PXs3 USB node Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 34/42] usb: typec: pd: Remove usb_suspend_supported sysfs from sink PDO Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 35/42] drm/amd/display: Properly reuse completion structure Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 36/42] attr: add in_group_or_capable() Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 37/42] fs: move should_remove_suid() Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 6.1 38/42] attr: add setattr_should_drop_sgid() Greg Kroah-Hartman
2023-03-01 18:09 ` [PATCH 6.1 39/42] attr: use consistent sgid stripping checks Greg Kroah-Hartman
2023-03-01 18:09 ` [PATCH 6.1 40/42] fs: use consistent setgid checks in is_sxid() Greg Kroah-Hartman
2023-03-01 18:09 ` [PATCH 6.1 41/42] scripts/tags.sh: fix incompatibility with PCRE2 Greg Kroah-Hartman
2023-03-01 18:09 ` [PATCH 6.1 42/42] USB: core: Dont hold device lock while reading the "descriptors" sysfs file Greg Kroah-Hartman
2023-03-01 20:33 ` [PATCH 6.1 00/42] 6.1.15-rc1 review Conor Dooley
2023-03-01 22:16 ` Florian Fainelli
2023-03-01 23:43 ` Justin Forbes
2023-03-02 1:44 ` Shuah Khan
2023-03-02 4:27 ` Bagas Sanjaya
2023-03-02 7:27 ` Jon Hunter
2023-03-02 10:19 ` Naresh Kamboju
2023-03-02 10:29 ` Greg Kroah-Hartman
2023-03-02 11:00 ` Naresh Kamboju
2023-03-02 20:02 ` Naresh Kamboju
2023-03-03 7:01 ` Greg Kroah-Hartman
2023-03-03 9:00 ` Naresh Kamboju
2023-03-03 8:04 ` Paolo Abeni
2023-03-03 9:04 ` Naresh Kamboju
2023-03-03 9:23 ` Greg Kroah-Hartman
2023-03-03 9:47 ` Matthieu Baerts
2023-03-03 10:26 ` Greg Kroah-Hartman
2023-03-03 10:56 ` Matthieu Baerts
2023-03-03 11:31 ` Greg Kroah-Hartman
2023-03-03 11:39 ` Paolo Abeni
2023-03-03 11:44 ` Greg Kroah-Hartman
2023-03-03 12:41 ` Paolo Abeni
2023-03-03 13:35 ` Greg Kroah-Hartman [this message]
2023-03-02 11:37 ` Sudip Mukherjee (Codethink)
2023-03-02 23:16 ` Slade Watkins
2023-03-02 23:25 ` Rudi Heitbaum
2023-03-03 1:31 ` Guenter Roeck
2023-03-03 2:55 ` Ron Economos
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZAH3rLIHE1wIY9c+@kroah.com \
--to=gregkh@linuxfoundation.org \
--cc=akpm@linux-foundation.org \
--cc=anders.roxell@linaro.org \
--cc=f.fainelli@gmail.com \
--cc=fw@strlen.de \
--cc=jonathanh@nvidia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@roeck-us.net \
--cc=lkft-triage@lists.linaro.org \
--cc=mathew.j.martineau@linux.intel.com \
--cc=matthieu.baerts@tessares.net \
--cc=mptcp@lists.linux.dev \
--cc=naresh.kamboju@linaro.org \
--cc=pabeni@redhat.com \
--cc=patches@kernelci.org \
--cc=patches@lists.linux.dev \
--cc=pavel@denx.de \
--cc=rwarsow@gmx.de \
--cc=shuah@kernel.org \
--cc=srw@sladewatkins.net \
--cc=stable@vger.kernel.org \
--cc=sudipm.mukherjee@gmail.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox