Kernel Kernel bug caused by (cpufreq: mediatek: Refine mtk_cpufreq_voltage_tracking()) on Banana Pi R64 (MT7622)
Thorsten Leemhuis
regressions at leemhuis.info
Thu Dec 1 07:08:50 PST 2022
Hi, this is your Linux kernel regression tracker. Top-posting for once,
to make this easily accessible to everyone.
I noticed this regression didn't make any progress
Matthias, is that because Nick didn't exactly do what you asked for (he
afaics tried -next, but nevertheless patches it)? Or is there another
reason?
Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
P.S.: As the Linux kernel's regression tracker I deal with a lot of
reports and sometimes miss something important when writing mails like
this. If that's the case here, don't hesitate to tell me in a public
reply, it's in everyone's interest to set the public record straight.
On 15.11.22 20:44, Nick wrote:
> I used now the linux-next kernel tree (with
> https://patchwork.ozlabs.org/project/linux-mtd/list/?series=327227 so
> single uImage.FIT will work).
>
> Same issue:
>
>> [ 0.886209] Kernel BUG at regulator_check_voltage+0xb0/0xf0 [verbose
>> debug info unavailable]
>>
>> [ 0.894663] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
>>
>> [ 0.900759] Modules linked in:
>>
>> [ 0.903819] CPU: 1 PID: 79 Comm: kworker/1:1 Tainted: G S
>> 6.1.0-rc5-next-20221115+ #0
>>
>> [ 0.904360] pstore: Using crash dump compression: deflate
>>
>> [ 0.913038] Hardware name: Bananapi BPI-R64 (DT)
>>
>> [ 0.913043] Workqueue: events dbs_work_handler
>>
>> [ 0.913056] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS
>> BTYPE=--)
>>
>> [ 0.913063] pc : regulator_check_voltage+0xb0/0xf0
>>
>> [ 0.913070] lr : regulator_set_voltage_unlocked+0x88/0x110
>>
>> [ 0.913077] sp : ffffffc00cef3b30
>>
>> [ 0.913080] x29: ffffffc00cef3b30 x28: ffffff8006f6f800 x27:
>> ffffff8006f6fa00
>>
>> [ 0.931243] mtk-pcie 1a143000.pcie: host bridge /pcie at 1a143000 ranges:
>>
>> [ 0.934474]
>>
>> [ 0.934475] x26: 00000000001312d0 x25: 0000000000000024
>>
>> [ 0.939298] mtk-pcie 1a143000.pcie: Parsing ranges property...
>>
>> [ 0.944730] x24: 0000000000118c30
>>
>> [ 0.948038] mtk-pcie 1a143000.pcie: MEM 0x0020000000..0x0027ffffff ->
>> 0x0020000000
>>
>> [ 0.955155]
>>
>> [ 0.955157] x23: 0000000000149970 x22: ffffff8000861800 x21:
>> ffffff8006f6f800
>>
>> [ 0.955166] x20: 00000000001312d0 x19: 0000000000000000 x18:
>> 00000000cfad1bd3
>>
>> [ 0.955174] x17: 000000000000000c x16: 0000000000000005 x15:
>> 0000000000000000
>>
>> [ 1.008473] x14: 0000000000000000 x13: 0000000000000165 x12:
>> 0101010101010101
>>
>> [ 1.015608] x11: 00000000017d7840 x10: 0000000000000850 x9 :
>> ffffffc00cef3900
>>
>> [ 1.017014] mmc0: new HS200 MMC card at address 0001
>>
>> [ 1.022740] x8 : ffffff8005ee9f30 x7 : 0000000000000001 x6 :
>> 00000000001312d0
>>
>> [ 1.022748] x5 : 0000000000118c30 x4 : 0000000000000000 x3 :
>> 0000000000000000
>>
>> [ 1.022756] x2 : ffffffc00cef3b68 x1 : ffffffc00cef3b6c
>>
>> [ 1.029034] mmcblk0: mmc0:0001 008G30 7.28 GiB
>>
>> [ 1.034833] x0 : ffffff8000861800
>>
>> [ 1.034838] Call trace:
>>
>> [ 1.044528] Alternate GPT is invalid, using primary GPT.
>>
>> [ 1.047175] regulator_check_voltage+0xb0/0xf0
>>
>> [ 1.052603] FIT: Selected configuration: "config-1" (OpenWrt
>> bananapi_bpi-r64)
>>
>> [ 1.055090] regulator_set_voltage+0x3c/0x64
>>
>> [ 1.057539] FIT: kernel sub-image 0x00001000..0x005200f9 "kernel-1"
>> (ARM64 OpenWrt Linux-6.1-rc2)
>>
>> [ 1.062824] mtk_cpufreq_voltage_tracking+0x12c/0x27c
>>
>> [ 1.062831] mtk_cpufreq_set_target+0x1c4/0x350
>>
>> [ 1.062837] __cpufreq_driver_target+0x2dc/0x660
>>
>> [ 1.067289] FIT: flat_dt sub-image 0x00521000..0x005272d9 "fdt-1"
>> (ARM64 OpenWrt bananapi_bpi-r64 device tree blob)
>>
>> [ 1.074484] od_dbs_update+0xb8/0x19c
>>
>> [ 1.074490] dbs_work_handler+0x3c/0x7c
>>
>> [ 1.078774] FIT: filesystem sub-image 0x00528000..0x00829fff
>> "rootfs-1" (ARM64 OpenWrt bananapi_bpi-r64 rootfs)
>>
>> [ 1.088560] process_one_work+0x200/0x3a0
>>
>> [ 1.093624] mmcblk0: p1 p2 p3 p4 p65(rootfs-1) p66(rootfs_data) p128
>>
>> [ 1.098116] worker_thread+0x170/0x4c0
>>
>> [ 1.104575] mmcblk0boot0: mmc0:0001 008G30 4.00 MiB
>>
>> [ 1.114009] kthread+0xd4/0xe0
>>
>> [ 1.114016] ret_from_fork+0x10/0x20
>>
>> [ 1.114028] Code: 6b04001f 54fffe6b 2a0003e4 17fffff3 (d4210000)
>>
>> [ 1.114033] ---[ end trace 0000000000000000 ]---
>> [ 0.878926] ------------[ cut here ]------------
>>
>
> Full log:
> https://gist.github.com/PolynomialDivision/4a555079887b288f4795b28eb3607aa9
>
> Big thanks to Daniel helping me to build a vanilla kernel with OpenWrt
> build system.
>
> Bests
> Nick
>
> On 11/10/22 12:26, Matthias Brugger wrote:
>> Hi Nick,
>>
>> On 09/11/2022 14:35, Nick wrote:
>>> Hi,
>>> while trying to bump OpenWrt Kernel to 6.1rc2 I noticed that the
>>> kernel is crashing while booting on a Banana Pi R64 (MT7622):
>>>
>>>> [ 1.055565] ------------[ cut here ]------------
>>>> [ 1.060204] Kernel BUG at regulator_check_voltage+0xb0/0xf0
>>>> [verbose debug info unavailable]
>>>> [ 1.062418] mtk-pcie 1a143000.pcie: host bridge /pcie at 1a143000
>>>> ranges:
>>>> [ 1.068656] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
>>>> [ 1.075248] mtk-pcie 1a143000.pcie: Parsing ranges property...
>>>> [ 1.081257] Modules linked in:
>>>> [ 1.081264] CPU: 1 PID: 328 Comm: kworker/1:7 Tainted: G
>>>> S 6.1-rc2 #0
>>>> [ 1.087088] mtk-pcie 1a143000.pcie: MEM
>>>> 0x0020000000..0x0027ffffff -> 0x0020000000
>>>> [ 1.090126] Hardware name: Bananapi BPI-R64 (DT)
>>>> [ 1.110541] Workqueue: events dbs_work_handler
>>>> [ 1.114988] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS
>>>> BTYPE=--)
>>>> [ 1.121944] pc : regulator_check_voltage+0xb0/0xf0
>>>> [ 1.126728] lr : regulator_set_voltage_unlocked+0x88/0x110
>>>> [ 1.129638] mmc1: host does not support reading read-only switch,
>>>> assuming write-enable
>>>> [ 1.132207] sp : ffffffc00956bb30
>>>> [ 1.132209] x29: ffffffc00956bb30 x28: ffffff8000efb400 x27:
>>>> 0000000000000024
>>>> [ 1.132219] x26: 00000000001312d0 x25: 0000000000118c30 x24:
>>>> 00000000001312d0
>>>> [ 1.132227] x23: 0000000000149970
>>>> [ 1.146036] mmc1: new high speed SDHC card at address e624
>>>> [ 1.150642] x22: ffffff800038f800
>>>> [ 1.159192] mmcblk1: mmc1:e624 SL16G 14.8 GiB
>>>> [ 1.161068] x21: ffffff8000efb100
>>>> [ 1.161072] x20: 00000000001312d0
>>>> [ 1.175424] GPT:partition_entry_array_crc32 values don't match:
>>>> 0xa0b5ce6d != 0xab54d286
>>>> [ 1.177757] x19: 0000000000000000 x18: 00000000799b2550
>>>> [ 1.181067] GPT:Primary header thinks Alt. header is not at the
>>>> end of the disk.
>>>> [ 1.189143] x17: 0000000000000003 x16: 0000000000000001 x15:
>>>> 0000000000000000
>>>> [ 1.189151] x14: 0000000000000000 x13: 0000000000000146 x12:
>>>> 00000000fa83b2da
>>>> [ 1.189159] x11: 000000000000013d x10: 0000000000000850
>>>> [ 1.194472] GPT:305184 != 31116287
>>>> [ 1.201842] x9 : ffffffc00956b910
>>>> [ 1.201846] x8 : ffffff8000b9edf0 x7 : 0000000000000001
>>>> [ 1.208970] GPT:Alternate GPT header not at the end of the disk.
>>>> [ 1.216092] x6 : 00000000001312d0
>>>> [ 1.216095] x5 : 0000000000118c30 x4 : 0000000000000000 x3 :
>>>> 0000000000000000
>>>> [ 1.216103] x2 : ffffffc00956bb68 x1 : ffffffc00956bb6c
>>>> [ 1.221321] GPT:305184 != 31116287
>>>> [ 1.224706] x0 : ffffff800038f800
>>>> [ 1.228095] GPT: Use GNU Parted to correct GPT errors.
>>>> [ 1.233307]
>>>> [ 1.233309] Call trace:
>>>> [ 1.233312] regulator_check_voltage+0xb0/0xf0
>>>> [ 1.242680] FIT: Selected configuration:
>>>> "config-mt7622-bananapi-bpi-r64-pcie1" (OpenWrt bananapi_bpi-r64
>>>> with mt7622-bananapi-bpi-r64-pcie1)
>>>> [ 1.242694] regulator_set_voltage+0x3c/0x64
>>>> [ 1.249831] FIT: kernel sub-image
>>>> 0x00001000..0x0052fd0a "kernel-1" (ARM64 OpenWrt Linux-6.1-rc2)
>>>> [ 1.255030] mtk_cpufreq_voltage_tracking+0x11c/0x26c
>>>> [ 1.255039] mtk_cpufreq_set_target+0x1c4/0x350
>>>> [ 1.258444] FIT: flat_dt sub-image
>>>> 0x00530000..0x005380c5 "fdt-1" (ARM64 OpenWrt bananapi_bpi-r64
>>>> device tree blob)
>>>> [ 1.261820] __cpufreq_driver_target+0x2f4/0x674
>>>> [ 1.261826] od_dbs_update+0xb8/0x19c
>>>> [ 1.266969] FIT: flat_dt sub-image
>>>> 0x00539000..0x0053911a "fdt-mt7622-bananapi-bpi-r64-pcie1" (ARM64
>>>> OpenWrt bananapi_bpi-r64 device tree overlay
>>>> mt7622-bananapi-bpi-r64-pcie1)
>>>> [ 1.268431] dbs_work_handler+0x3c/0x7c
>>>> [ 1.270883] FIT: flat_dt sub-image
>>>> 0x0053a000..0x0053a20f "fdt-mt7622-bananapi-bpi-r64-sata" (ARM64
>>>> OpenWrt bananapi_bpi-r64 device tree overlay
>>>> mt7622-bananapi-bpi-r64-sata)
>>>> [ 1.275297] process_one_work+0x200/0x3a0
>>>> [ 1.287998] FIT: filesystem sub-image
>>>> 0x0053b000..0x00859fff "rootfs-1" (ARM64 OpenWrt bananapi_bpi-r64
>>>> rootfs)
>>>> [ 1.292237] worker_thread+0x170/0x4c0
>>>> [ 1.292244] kthread+0xd4/0xe0
>>>> [ 1.302066] FIT: selecting configured loadable "rootfs-1" to be
>>>> root filesystem
>>>> [ 1.307092] ret_from_fork+0x10/0x20
>>>> [ 1.311631] mmcblk1: p1 p2 p3 p4 p5 p6 p65(rootfs-1)
>>>> p66(rootfs_data) p128
>>>> [ 1.322903] Code: 6b04001f 54fffe6b 2a0003e4 17fffff3 (d4210000)
>>>> [ 1.413322] ---[ end trace 0000000000000000 ]---
>>> The complete log can be found here:
>>> https://gist.githubusercontent.com/PolynomialDivision/395d009c84b426d780549c5fa1f64ff1/raw/886d621d2bf6f03429586adf8a14a6c37c8d8a7d/mt7622-6-1.log
>>>
>>> Reverting commit "cpufreq: mediatek: Refine
>>> mtk_cpufreq_voltage_tracking()" fixes the kernel bug:
>>> https://github.com/torvalds/linux/commit/6a17b3876bc8303612d7ad59ecf7cbc0db418bcd
>>>
>>> The revert commit can be found here:
>>> https://github.com/PolynomialDivision/openwrt/commit/1df941d0334000e3aced43b7d50cdac0da8bf427
>>>
>>> The branch I use to build the 6.1rc2 on a Banana Pi R64 can be found
>>> here:
>>> https://github.com/PolynomialDivision/openwrt/commits/bump-mt7622-rebase
>>>
>>
>> Thanks for the report.
>> Could you test with a plain upstream kernel? That would help us to
>> verify that this is a upstream problem and not introduced by some
>> openwrt patches.
>>
>> Regards,
>> Matthias
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