Kernel Kernel bug caused by (cpufreq: mediatek: Refine mtk_cpufreq_voltage_tracking()) on Banana Pi R64 (MT7622)
Nick
vincent at systemli.org
Tue Nov 15 11:44:47 PST 2022
Hi,
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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