Re: [PATCH 5.10 000/139] 5.10.168-rc1 review

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On Tue, Feb 14, 2023 at 10:09:38AM -0500, Sasha Levin wrote:
> On Tue, Feb 14, 2023 at 02:53:13PM +0000, Russell King (Oracle) wrote:
> > On Tue, Feb 14, 2023 at 07:20:46AM +0100, Greg Kroah-Hartman wrote:
> > > On Mon, Feb 13, 2023 at 11:50:24AM -0800, Florian Fainelli wrote:
> > > > On 2/13/23 06:49, Greg Kroah-Hartman wrote:
> > > > > This is the start of the stable review cycle for the 5.10.168 release.
> > > > > There are 139 patches in this series, all will be posted as a response
> > > > > to this one.  If anyone has any issues with these being applied, please
> > > > > let me know.
> > > > >
> > > > > Responses should be made by Wed, 15 Feb 2023 14:46:51 +0000.
> > > > > Anything received after that time might be too late.
> > > > >
> > > > > The whole patch series can be found in one patch at:
> > > > > 	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.10.168-rc1.gz
> > > > > or in the git tree and branch at:
> > > > > 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y
> > > > > and the diffstat can be found below.
> > > > >
> > > > > thanks,
> > > > >
> > > > > greg k-h
> > > >
> > > > There is a regression coming from:
> > > >
> > > > nvmem: core: fix registration vs use race
> > > >
> > > > which causes the following to happen for MTD devices:
> > > >
> > > > [    6.031640] kobject_add_internal failed for mtd0 with -EEXIST, don't try
> > > > to register things with the same name in the same directory.
> > > > [    7.846965] spi-nor: probe of spi0.0 failed with error -17
> > > >
> > > > attached is a full log with the call trace. This does not happen with
> > > > v6.2-rc8 where the MTD partitions are successfully registered.
> > > 
> > > Can you use `git bisect` to find the offending commit?
> > 
> > The reason for this is because, due to how my patch series was
> > backported, you have ended up with nvmem_register() initialising
> > its embedded device, and then calling device_add() on it _twice_.
> > 
> > Basically, the backport of:
> > 
> > 	"nvmem: core: fix registration vs use race"
> > 
> > is broken, because the original patch _moved_ the device_add() and
> > that has not been carried forward to whatever got applied to stable
> > trees.
> > 
> > It looks like the 5.15-stable version of this patch was correct.
> > 
> > Maybe whoever tried to fixup the failure needs to try again?
> 
> I've dropped the backport series from both 5.15 and 5.10.

So you've dropped what looks to be a perfectly good backport in 5.15,
and all of the 5.10 despite it just being the last patch which is the
problem. Sounds like a total over-reaction to me.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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