Android 14 Protected symbol for driver

[shiva141]

Hi 

We are using imx8mp SOC with imx-android-14.0.0_2.2.0.
We are upgrading from Android 13 to Android 14. 

was able to add the  TPM driver using GKI -imx8mp_gki.fragment and Shareboardconfig.mk to the BSP. 

We observer protected symbol for the TPM driver.Share you input for resolving this in Android 14; same Hardware setup work fine for Android 13 BSP.   

# dmesg | grep tpm
[ 12.845674] tpm: Protected symbol: compat_only_sysfs_link_entry_to_kobj (err -13)
[ 12.854206] tpm: Protected symbol: hash_digest_size (err -13)
[ 12.860854] tpm: Protected symbol: securityfs_create_dir (err -13)
[ 12.867862] tpm: Protected symbol: securityfs_create_file (err -13)
[ 12.874967] tpm: Protected symbol: securityfs_remove (err -13)
[ 12.881627] tpm: Protected symbol: efi_tpm_final_log_size (err -13)
[ 12.891035] tpm: Protected symbol: compat_only_sysfs_link_entry_to_kobj (err -13)
[ 12.899530] tpm: Protected symbol: hash_digest_size (err -13)
[ 12.906097] tpm: Protected symbol: securityfs_create_dir (err -13)
[ 12.913088] tpm: Protected symbol: securityfs_create_file (err -13)
[ 12.920129] tpm: Protected symbol: securityfs_remove (err -13)
 

Please share steps for resolving Protected symbol in Android 14

#Android #imx8mp

[Maruti]

Dear @shiva141 
Im also facing similar issue while loading RTL ethernet driver as a module in kenel  ini.MX8MQ with Android14

[2025-05-23 13:12:12] 1|iwg33m_8mq:/ # dmesg |grep -i r8169
[2025-05-23 13:12:21] [ 15.742841] r8169: Protected symbol: pcim_set_mwi (err -13)
[2025-05-23 13:12:21] [ 15.749227] r8169: Protected symbol: netdev_sw_irq_coalesce_default_on (err -13)
[2025-05-23 13:12:21] [ 15.757416] r8169: Protected symbol: pci_dev_run_wake (err -13)
[2025-05-23 13:12:21] [ 15.764251] r8169: Protected symbol: pci_reset_bus (err -13)
[2025-05-23 13:12:21] [ 15.770833] r8169: Protected symbol: __devm_mdiobus_register (err -13)
[2025-05-23 13:12:21] [ 15.778358] r8169: Protected symbol: netdev_stats_to_stats64 (err -13)
[2025-05-23 13:12:21] [ 15.785646] r8169: Protected symbol: phy_mac_interrupt (err -13)
[2025-05-23 13:12:21] [ 15.792439] r8169: Protected symbol: phy_resume (err -13)
[2025-05-23 13:12:21] [ 15.798600] r8169: Protected symbol: phy_speed_up (err -13)
[2025-05-23 13:12:21] [ 15.805001] r8169: Protected symbol: pci_status_get_and_clear_errors (err -13)
[2025-05-23 13:12:21] [ 15.813047] r8169: Protected symbol: pcie_set_readrq (err -13)
[2025-05-23 13:12:21] [ 15.819722] r8169: Protected symbol: phy_speed_down (err -13)
[2025-05-23 13:12:21] [ 15.826278] r8169: Protected symbol: phy_get_pause (err -13)

Are you able to resolve this issue ?

[Harvey021]

Hi,

Have you tried to upstream symbol to AOSP and then use the boot.img updated by Google? You can refer to the section <9 Generic Kernel Image (GKI) Development> of GUIDE.

If you use boot_imx.img, won't encounter the problem you mentioned.

Can also try to revert this patch in kernel_imx as attached.

Regards

Harvey