Message-ID: <ZqiyLvP0gkBnuekL@hovoldconsulting.com>
Date: Tue, 30 Jul 2024 11:28:14 +0200
From: Johan Hovold <johan@...nel.org>
To: Stephan Gerhold <stephan.gerhold@...aro.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Abel Vesa <abel.vesa@...aro.org>
Subject: Re: [PATCH 1/2] soc: qcom: pd_mapper: Add X1E80100

On Mon, Jul 29, 2024 at 04:57:54PM +0200, Johan Hovold wrote:
> On Mon, Jul 08, 2024 at 06:22:09PM +0200, Stephan Gerhold wrote:
> > X1E80100 has the same protection domains as SM8550, except that MPSS is
> > missing. Add it to the in-kernel pd-mapper to avoid having to run the
> > daemon in userspace for charging and audio functionality.
> 
> I'm seeing a bunch of new errors when running with this patch applied on
> top of 6.11-rc1. I'm assuming it is due to changes in timing that are
> either exposing existing bugs or there is a general problem with the
> in-kernel pd-mapper implementation.
> 
> In any case, this does does not seem to be specific to x1e80100 even if
> I'm not seeing as many issues on sc8280xp (there is one new error there
> too however).
> 
> It doesn't happen on every boot, but with the in-kernel pd-mapper I
> often (every 3-4 boots) see the following errors on the x1e80100 CRD
> during boot:
> 
> 	[    9.799719] pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to send altmode request: 0x10 (-125)
>         [    9.812446] pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to request altmode notifications: -125
>         [    9.831796] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: failed to send UCSI read request: -125
> 
> 	[    9.269230] qcom_battmgr.pmic_glink_power_supply pmic_glink.power-supply.0: failed to request power notifications
> 
> I've also seen the following, which may also be related:
> 
> 	[   14.565059] PDR: avs/audio get domain list txn wait failed: -110
>         [   14.571943] PDR: service lookup for avs/audio failed: -110
> 
> I haven't seen the -ECANCELED (-125) errors in 30 reboots with the patch
> reverted again.

Here's another bug, a NULL deref in the battery driver, that is
apparently exposed by the in-kernel pd-mapper. This is also on the
x1e80100 CRD with a couple of added printks to indicate when the
pd-mapper probes and when the pmic glink services are up:

[    8.933775] remoteproc remoteproc1: powering up 32300000.remoteproc
[    8.934623] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with fd5000.phy
[    8.945244] remoteproc remoteproc1: Booting fw image qcom/x1e80100/cdsp.mbn, size 3027368
[    8.965537] remoteproc remoteproc0: powering up 30000000.remoteproc
[    8.971075] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with fda000.phy
[    8.974299] remoteproc remoteproc0: Booting fw image qcom/x1e80100/adsp.mbn, size 21424472
[    8.999726] msm-mdss ae00000.display-subsystem: Adding to iommu group 4
[    9.007697] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with fdf000.phy
[    9.101196] remoteproc remoteproc1: remote processor 32300000.remoteproc is now up
[    9.103860] qcom_pd_mapper.qcom-pdm-mapper qcom_common.pd-mapper.1: qcom_pdm_probe
[    9.105989] qcom_pd_mapper.qcom-pdm-mapper qcom_common.pd-mapper.0: qcom_pdm_probe

 - pd-mapper probing

[    9.112983] qcom-snps-eusb2-hsphy fd3000.phy: Registered Qcom-eUSB2 phy
[    9.296879] remoteproc remoteproc0: remote processor 30000000.remoteproc is now up

 - adsp is up

[    9.300086] qcom_pmic_glink pmic-glink: pmic_glink_pdr_callback - state = 7fffffff

 - SERVREG_SERVICE_STATE_UNINIT

[    9.301878] qcom-snps-eusb2-hsphy fd9000.phy: Registered Qcom-eUSB2 phy
[    9.306985] qcom,fastrpc 30000000.remoteproc:glink-edge.fastrpcglink-apps-dsp.-1.-1: no reserved DMA memory for FAST
RPC
[    9.309924] qcom,fastrpc-cb 30000000.remoteproc:glink-edge:fastrpc:compute-cb@3: Adding to iommu group 5
[    9.311367] qcom,fastrpc-cb 30000000.remoteproc:glink-edge:fastrpc:compute-cb@4: Adding to iommu group 6
[    9.318330] PDR: Indication received from msm/adsp/charger_pd, state: 0x1fffffff, trans-id: 1

 - This looks suspicious

[    9.323924] qcom-snps-eusb2-hsphy fde000.phy: Registered Qcom-eUSB2 phy
[    9.325275] qcom,fastrpc-cb 30000000.remoteproc:glink-edge:fastrpc:compute-cb@5: Adding to iommu group 7
[    9.326008] qcom,fastrpc-cb 30000000.remoteproc:glink-edge:fastrpc:compute-cb@6: Adding to iommu group 8
[    9.326733] qcom,fastrpc-cb 30000000.remoteproc:glink-edge:fastrpc:compute-cb@7: Adding to iommu group 9
[    9.336582] qcom_pmic_glink pmic-glink: pmic_glink_pdr_callback - state = 1fffffff

 - SERVREG_SERVICE_STATE_UP

[    9.345544] dwc3 a000000.usb: Adding to iommu group 10
[    9.361410] qcom,apr 30000000.remoteproc:glink-edge.adsp_apps.-1.-1: Adding APR/GPR dev: gprsvc:service:2:1
[    9.362803] pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to send altmode request: 0x10 (-125)
[    9.362882] pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to request altmode notifications: -125

 - -ECANCELED errors I reported earlier

[    9.364298] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
...
[    9.364339] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
[    9.364395] CPU: 6 UID: 0 PID: 111 Comm: kworker/6:4 Not tainted 6.11.0-rc1 #70
[    9.364397] Hardware name: Qualcomm CRD, BIOS 6.0.231221.BOOT.MXF.2.4-00348.1-HAMOA-1 12/21/2023
[    9.364398] Workqueue: events qcom_battmgr_enable_worker [qcom_battmgr]
[    9.364401] pstate: 01400005 (nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[    9.364403] pc : pmic_glink_send+0xc/0x24 [pmic_glink]
[    9.364405] lr : qcom_battmgr_enable_worker+0x60/0xbc [qcom_battmgr]
...
[    9.364427] Call trace:
[    9.364428]  pmic_glink_send+0xc/0x24 [pmic_glink]
[    9.364429]  qcom_battmgr_enable_worker+0x60/0xbc [qcom_battmgr]
[    9.364430]  process_one_work+0x210/0x614
[    9.364435]  worker_thread+0x244/0x388
[    9.364436]  kthread+0x124/0x128
[    9.364437]  ret_from_fork+0x10/0x20
[    9.364439] Code: 17fffff7 d503233f a9bf7bfd 910003fd (f9400800)
[    9.364441] ---[ end trace 0000000000000000 ]---

[    9.365205] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: failed to send UCSI read request: -125

Johan

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