Re: [PATCH 5.10 000/130] 5.10.44-rc2 review

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Tue, Jun 15, 2021 at 09:41:26AM +0530, Naresh Kamboju wrote:
> Hi Greg,
> 
> On Mon, 14 Jun 2021 at 21:45, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > This is the start of the stable review cycle for the 5.10.44 release.
> > There are 130 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, 16 Jun 2021 16:13:59 +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-5.10.44-rc2.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
> 
> The following kernel crash reported on stable rc 5.10.44-rc2 arm64 db845c board.
> 
> [    5.127966] dwc3-qcom a6f8800.usb: failed to get usb-ddr path: -517
> [    5.145567] Unable to handle kernel NULL pointer dereference at
> virtual address 0000000000000002
> [    5.154451] Mem abort info:
> [    5.157296]   ESR = 0x96000004
> [    5.160401]   EC = 0x25: DABT (current EL), IL = 32 bits
> [    5.165771]   SET = 0, FnV = 0
> [    5.168873]   EA = 0, S1PTW = 0
> [    5.172064] Data abort info:
> [    5.174980]   ISV = 0, ISS = 0x00000004
> [    5.178860]   CM = 0, WnR = 0
> [    5.181872] [0000000000000002] user address but active_mm is swapper
> [    5.188293] Internal error: Oops: 96000004 [#1] PREEMPT SMP
> [    5.193922] Modules linked in:
> [    5.197022] CPU: 4 PID: 57 Comm: kworker/4:3 Not tainted 5.10.44-rc2 #1
> [    5.203697] Hardware name: Thundercomm Dragonboard 845c (DT)
> [    5.204022] ufshcd-qcom 1d84000.ufshc: ufshcd_print_pwr_info:[RX,
> TX]: gear=[3, 3], lane[2, 2], pwr[FAST MODE, FAST MODE], rate = 2
> [    5.209434] Workqueue: events deferred_probe_work_func
> [    5.221786] ufshcd-qcom 1d84000.ufshc:
> ufshcd_find_max_sup_active_icc_level: Regulator capability was not
> set, actvIccLevel=0
> [    5.226541] pstate: 60c00005 (nZCv daif +PAN +UAO -TCO BTYPE=--)
> [    5.226551] pc : inode_permission+0x2c/0x178
> [    5.226559] lr : lookup_one_len_common+0xac/0x100
> 
> ref:
> https://lkft.validation.linaro.org/scheduler/job/2899138#L2873
> 
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> There is a crash like this reported and discussed on the mailing thread.
> https://lore.kernel.org/linux-usb/20210608105656.10795-1-peter.chen@kernel.org/

Is this crash just on shutdown?  That's what that commit was fixing, but
it is resolving an error that should not be in the 5.10.y tree.

thanks,

greg k-h