Re: [PATCH 4.9 00/62] 4.9.335-rc1 review

[Florian Fainelli]

On 12/5/22 14:48, Florian Fainelli wrote:
> On 12/5/22 14:28, Jon Hunter wrote:
> > Hi Greg,
> >
> > On 05/12/2022 19:08, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 4.9.335 release.
> > > There are 62 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, 07 Dec 2022 19:07:46 +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/v4.x/stable-review/patch-4.9.335-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-4.9.y
> > > and the diffstat can be found below.
> > >
> > > thanks,
> > >
> > > greg k-h
> > >
> > > -------------
> > > Pseudo-Shortlog of commits:
> > >
> > > Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> > >      Linux 4.9.335-rc1
> > >
> > > Adrian Hunter <adrian.hunter@xxxxxxxxx>
> > >      mmc: sdhci: Fix voltage switch delay
> >
> >
> > I am seeing a boot regression on a couple boards and bisect is 
> > pointing to the above commit.
>
> Same thing here, getting a hard lock for our devices with the SDHCI 
> controller enabled, sometimes we are lucky to see the following:
>
> [    4.790367] mmc0: SDHCI controller on 84b0000.sdhci [84b0000.sdhci] 
> using ADMA 64-bit
> [   25.802351] INFO: rcu_sched detected stalls on CPUs/tasks:
> [   25.807871]  1-...: (1 GPs behind) idle=561/140000000000000/0 
> softirq=728/728 fqs=5252
> [   25.815892]  (detected by 0, t=21017 jiffies, g=61, c=60, q=55)
> [   25.821834] Task dump for CPU 1:
> [   25.825069] kworker/1:1     R  running task        0   509      2 
> 0x00000002
> [   25.832164] Workqueue: events_freezable mmc_rescan
> [   25.836974] Backtrace:
> [   25.839440] [<ce32fea4>] (0xce32fea4) from [<ce32fed4>] (0xce32fed4)
> [   25.845803] Backtrace aborted due to bad frame pointer <cd2f0a54>
>
> Also confirmed that reverting that change ("mmc: sdhci: Fix voltage 
> switch delay") allows devices to boot properly.
>
> Had not a chance to test the change when submitted for mainline despite 
> being copied, sorry about that.
>
> Since that specific commit is also included in the other stable trees 
> (5.4, 5.10, 5.15 and 6.0) I will let you know whether the same issue is 
> present in those trees shortly thereafter.

This only appears to impact 4.9, Adrian is there a missing functional 
dependency for "mmc: sdhci: Fix voltage switch delay" to work correctly 
on the 4.9 kernel?
--
Florian