vendor overlay breaks stock vendor mount

[natsumerinchan]

Describe the bug
I get stuck on the first screen when I first start up after installed this module.

After successfully entering the system, the module has been disabled.

To Reproduce
Steps to reproduce the behavior:

1. Flash this module 门禁卡.zip
2. Reboot

Expected behavior
This module is created by cardemulator, allows the app to systemless modify /vendor/etc/libnfc-nxp.conf for the purpose of emulating nfc cards.

Screenshots
If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device: [Oneplus 9RT]
• OS: [PixelOS]
• Version [33]

Additional context
Add any other context about the problem here.
KernelSU_bugreport_2023-02-12_14_16.tar.gz

[tiann]

please execute: ls -al /system and give me the output

[natsumerinchan]

[tiann]

After install the nfc module, execute: chcon u:object_r:vendor_configs_file:s0 /data/adb/ksu/modules/NFC_Card_Emulator/vendor/etc/libnfc-nxp.conf and have a try

[natsumerinchan]

I flashed the module and no system folder appeared, are they in modules_update.img?I haven't rebooted yet.

So I try to add customize.sh and post-fs-data.sh to set selinux context but it is still error.

nfc.zip

[tiann]

What happened if you rename the libnfc-nxp.conf to someone else?

[natsumerinchan]

I renamed it to celica.conf and it is still error

[tiann]

only an empty /vendor/etc would cause error?

[natsumerinchan]

yes

[tiann]

Maybe add chcon u:object_r:vendor_configs_file:s0 /vendor/etc ?

[natsumerinchan]

Failed.
nfc.zip

[tiann]

please execute: ls -alZ /vendor and ls -alZ /vendor/etc

[natsumerinchan]

vendor.txt
vendor-etc.txt

[tiann]

And what is mount -t overlay?

[natsumerinchan]

[celica@arch ~]$ adb shell
martini:/ $ su
martini:/ # mount -t overlay
overlay on /system type overlay (ro,seclabel,relatime,lowerdir=/data/adb/ksu/modules/lhroot/system:/data/adb/ksu/modules/xmlpak/system:/data/adb/ksu/modules/busybox-ndk/system:/data/adb/ksu/modules/zygisksu/system:/data/adb/ksu/modules/lxgwttftemplatec/system:/data/adb/ksu/modules/zipsigner/system:/data/adb/ksu/modules/magic-flash/system:/data/adb/ksu/modules/go-touch-mapper/system:/data/adb/ksu/modules/com.aurora.services/system:/data/adb/ksu/modules/nano-ndk/system:/system)
overlay on /product type overlay (ro,seclabel,relatime,lowerdir=/data/adb/ksu/modules/lxgwttftemplatec/product:/product)
martini:/ #

[tiann]

When you install the nfc module(dont reboot), upload the /data/adb/ksu/modules_update.img

[natsumerinchan]

https://drive.google.com/file/d/1xyKIO2k7bWatyZnkSw96dVvnwTVf76w4/view?usp=share_link

[tiann]

Install the module and before reboot, replace modules_update.img with this one: https://taichi.lanzoum.com/itpkU0nccefc
(unzip it first)

[natsumerinchan]

Still error😂

[tiann]

What if you put a setenforce 0 to post-fs-data.sh?

[natsumerinchan]

Still the same, maybe the problem is not on selinux?

[tiann]

please try this: https://taichi.lanzoum.com/ij6GE0nchlwb

[natsumerinchan]

It is booting success now!But the file have not overlayed to the real /vendor/etc directory.

[tiann]

What is mount -t overlay?

[natsumerinchan]

[celica@arch ~]$ adb shell
martini:/ $ su
martini:/ # mount -t overlay
overlay on /system type overlay (ro,seclabel,relatime,lowerdir=/data/adb/ksu/modules/lhroot/system:/data/adb/ksu/modules/xmlpak/system:/data/adb/ksu/modules/busybox-ndk/system:/data/adb/ksu/modules/zygisksu/system:/data/adb/ksu/modules/lxgwttftemplatec/system:/data/adb/ksu/modules/zipsigner/system:/data/adb/ksu/modules/magic-flash/system:/data/adb/ksu/modules/go-touch-mapper/system:/data/adb/ksu/modules/com.aurora.services/system:/data/adb/ksu/modules/nano-ndk/system:/system)
overlay on /product type overlay (ro,seclabel,relatime,lowerdir=/data/adb/ksu/modules/lxgwttftemplatec/product:/product)
martini:/ #                                                                                                                                                                                                                                   martini:/ #

[tiann]

vendor overlay is gone? ls -alZ /data/adb/ksu/modules/NFC_Card_Emulator?

[natsumerinchan]

[tiann]

Please send me the log in Settings - Send log

[natsumerinchan]

KernelSU_bugreport_2023-02-12_18_15.tar.gz

[tiann]

Log Catcher-v22.5(27).zip

The logcat buffer is gone, please use this module get logcat.

the log will be /cache/bootlog or /data/local/bootlog

[natsumerinchan]

boot-2023-02-12-18-22-37.log

[tiann]

please try this release: https://github.com/tiann/KernelSU/actions/runs/4155889057

[natsumerinchan]

Bootloop now，how to enable safety mode

[tiann]

Your device would bootloop with only one /system/vendor folder?

[tiann]

Bootloop now，how to enable safety mode

I don't have Oneplus device, but for xiaomi devices, you can reboot to recovery, and there is a option "reboot with safe mode"

[natsumerinchan]

I will try to flash the offical boot and use magisk to delete nfc module

[natsumerinchan]

Maybe kernelsu should add a feature that automatically disables all modules after 3 bootloops?

[natsumerinchan]

Start up now

[natsumerinchan]

Only install nfc and log catcher

bootlog.tar.gz
oldlogbak.tar.gz
boot-2023-02-12-19-11-33.log

[tiann]

install the module and upload modules_update.img

[natsumerinchan]

modules_update.img.tar.gz

[tiann]

How about this one?
modules_update.img.zip

[natsumerinchan]

Boot failed.
bootlog.tar.gz
oldlogbak.tar.gz
boot-2023-02-12-21-15-52.log

[tiann]

I have no idea why simply overlay vendor would cause bootloop, i test Redmi and pixel, it seems working.

When bootloop, is the system_server or adbd launched?

[natsumerinchan]

Vibrate when booting, can not connect to adbd.

[natsumerinchan]

I am checking the kernel config https://github.com/bheatleyyy/kernel_oplus_sm8350/blob/dd23589bd48c42ef0f05ddc4cccc174b22a03a2c/arch/arm64/configs/vendor/lahaina-qgki_defconfig#L5950

[HuskyDG]

There are some mounts under /vendor

[HuskyDG]

I think KernelSU didn't handle this.

[tiann]

I think KernelSU didn't handle this.

I think so

[natsumerinchan]

[tiann]

KernelSU_v0.3.8-28-g47bcccd-release.apk.zip
@natsumerinchan Could you test this package?

[natsumerinchan]

KernelSU_v0.3.8-28-g47bcccd-release.apk.zip @natsumerinchan Could you test this package?

Nice!!! It is working now: