[Magisk] fOmey:
Thanks for the update [MENTION=4470081]topjohnwu[/MENTION] !

My Galaxy S6 updated to 14.2 no problems at all...

I was hoping this update might solve a issue I'm having with a handful of mediatek devices however, same manufacture two models, same problem:

Magisk.log

--------- beginning of main
I( 310: 310) Magisk v14.1(1410) daemon started
I( 310: 312) ** post-fs mode running
--------- beginning of system
I( 310: 338) ** post-fs-data mode running
I( 310: 338) * Mounting mirrors
I( 310: 338) mount: /dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/system -> /dev/magisk/mirror/system
I( 310: 338) link: /dev/magisk/mirror/system/vendor -> /dev/magisk/mirror/vendor
I( 310: 338) bind_mount: /data/magisk -> /dev/magisk/mirror/bin
E( 310: 338) mount /dev/block/loop0->/dev/source failed with 13: Permission denied
I( 310: 533) ** late_start service mode running
I( 310: 533) * Running service.d scripts
I( 310: 533) * Running module service scripts
E( 4482: 4482) mount /dev/block/loop1->/dev/magisk_merge failed with 13: Permission denied

FSTAB:

# 1 "vendor/mediatek/proprietary/hardware/fstab/mt6757/fstab.in"
# 1 "<built-in>"
# 1 "<命令行>"
# 1 "vendor/mediatek/proprietary/hardware/fstab/mt6757/fstab.in"
# 26 "vendor/mediatek/proprietary/hardware/fstab/mt6757/fstab.in"
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/system /system ext4 ro wait
# 38 "vendor/mediatek/proprietary/hardware/fstab/mt6757/fstab.in"
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/userdata /data ext4 noatime,nosuid,nodev,noauto_da_alloc,discard wait,check,resize,encryptable=/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/metadata,

/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/cache /cache ext4 noatime,nosuid,nodev,noauto_da_alloc,discard wait,check
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/protect1 /protect_f ext4 noatime,nosuid,nodev,noauto_da_alloc,commit=1,nodelalloc wait,check,formattable
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/protect2 /protect_s ext4 noatime,nosuid,nodev,noauto_da_alloc,commit=1,nodelalloc wait,check,formattable
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/nvdata /nvdata ext4 noatime,nosuid,nodev,noauto_da_alloc,discard wait,check,formattable
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/nvcfg /nvcfg ext4 noatime,nosuid,nodev,noauto_da_alloc,commit=1,nodelalloc wait,check,formattable
# 54 "vendor/mediatek/proprietary/hardware/fstab/mt6757/fstab.in"
/devices/platform/mtk-msdc.0/11230000.msdc0* auto vfat defaults voldmanaged=sdcard0:auto
/devices/platform/mtk-msdc.0/11240000.msdc1* auto auto defaults voldmanaged=sdcard1:auto,encryptable=userdata
/devices/platform/11270000.usb3_xhci* auto vfat defaults voldmanaged=usbotg:auto

/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/frp /persistent emmc defaults defaults

/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/nvram /nvram emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/proinfo /proinfo emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/lk /bootloader emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/lk2 /bootloader2 emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/para /misc emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/boot /boot emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/recovery /recovery emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/logo /logo emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/expdb /expdb emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/seccfg /seccfg emmc defaults defaults

/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/tee1 /tee1 emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/tee2 /tee2 emmc defaults defaults
# 83 "vendor/mediatek/proprietary/hardware/fstab/mt6757/fstab.in"
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/md1img /md1img emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/md1dsp /md1dsp emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/md1arm7 /md1arm7 emmc defaults defaults
/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/md3img /md3img emmc defaults defaults

/dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/otp /otp emmc defaults defaults

No custom recovery or kernel sources available, so I installed Magisk using the boot.img patcher... was unable to update using the direct patcher either, had to repatch the original boot.img and flash using fastboot to update to 14.2..