Magisk: Canary 20422 patched kernel boots to Fastboot

[ch3mn3y]

Updating MAGISK to 20422 ends with constant boot into Fastboot. Device tries to boots OS, but than after kernel/device bootlogo it reboots and starts Fastboot.
Hard to get any loss as I don't know of a way to get dmesg when in Fastboot and rebooting it into recovery creates overwrites that file.

Dunno if prepatched and after kernels would be any good?

Similar thing was yesterday with 20421, but than I got no way to write here.

Device is Xiaomi Mi Max 3 with AEX 6.7 (Pie).

[Master0ne]

Confirmed, I've just experienced the same issue on a OnePlus 6 with LineageOS 16 for microG.

[KaMyKaSii]

Just like in the 20421 build, my Zenfone 4 with Android Pie (just one system partition, ramdisk on boot.img) remains stuck in the ASUS logo. This device does not generate /proc/last_kmsg or /sys/fs/pstore/console-ramoops, I will attach the backup of the asdf partition which may have some relevant log
asdf.ext4.win.tar.gz

Hard to get any loss as I don't know of a way to get dmesg when in Fastboot and rebooting it into recovery creates overwrites that file.

No /proc/last_kmsg or /sys/fs/pstore/console-ramoops that you can grab with TWRP?

[Master0ne]

I'm a little bit lost with this now. So I was able to boot back to Slot B on my OnePlus 6, but that one is still on stable 20.3 (20300) which does not work with my online banking apps.

I guess till the problem has been solved, the only way is to reinstall Magisk Canary 20420 to Slot A again, to be able to boot Slot A?

Where can I find the Magisk Canary 20420 zip to be flashed from TWRP?

[Master0ne]

Since I seem to to be unable to find the Magisk Canary 20420 zip here on GitHub, can someone please provide that file so that I can downgrade?

This is a major pita for me right now, because I really need the latest working Magisk Canary (20420) for my online banking apps to work.

[ch3mn3y]

No /proc/last_kmsg or /sys/fs/pstore/console-ramoops that you can grab with TWRP?

Won't it just recreate the file cos I rebooted once again?
Will try in a moment.

Since I seem to to be unable to find the Magisk Canary 20420 zip here on GitHub, can someone please provide that file so that I can downgrade?

https://support.halabtech.com/index.php?a=downloads&b=file&id=315750
Or look into Android Repository on Telegram.

[ch3mn3y]

dmesg.txt

And last_kmsg was saved as empty file.

[ch3mn3y]

3128 #3129

Seems to be same issue

[Master0ne]

Since I seem to to be unable to find the Magisk Canary 20420 zip here on GitHub, can someone please provide that file so that I can downgrade?

https://support.halabtech.com/index.php?a=downloads&b=file&id=315750
Or look into Android Repository on Telegram.

Thanks for the download link, but unfortunately it requires registration at HalabTech.com to be able to download that file, which I have just tried but didn't receive the email with the confirmation link.

I'm not on Telegram, so any chance for another download link that allows free download?

EDIT: Just found the link in Issue #3134: magisk-debug.zip (20420)

[TurtleRecall]

I'm a little bit lost with this now. So I was able to boot back to Slot B on my OnePlus 6, but that one is still on stable 20.3 (20300) which does not work with my online banking apps.

I guess till the problem has been solved, the only way is to reinstall Magisk Canary 20420 to Slot A again, to be able to boot Slot A?

Where can I find the Magisk Canary 20420 zip to be flashed from TWRP?

Here's a link to 20420, found it in bug report for 20421 and had to use it myself. Would be handy if these were more readily available...
https://github.com/topjohnwu/magisk_files/blob/51e925d88c07d9fab2017d57c723e28c18a0d996/magisk-debug.zip

[ihatemicrosoft-was-already-taken]

btw., same on Pixel 3 blueline

[ihatemicrosoft-was-already-taken]

Where can I find the Magisk Canary 20420 zip to be flashed from TWRP?

It's always in the commit history of the canary branch. You don't have to dig around in bug reports (@TurtleRecall). It works like this:

1. go to https://github.com/topjohnwu/magisk_files
2. select canary branch
3. click "commits"
4. select older commit (in your case 51e925d)
5. click "Browse files"
6. (optional, but recommended) open debug.json and confirm magisk version
7. click magisk-debug.zip
8. click Download

This way you always should be able to download every version ever. Same applies for the master (i.e. release) branch.

[TurtleRecall]

Where can I find the Magisk Canary 20420 zip to be flashed from TWRP?

It's always in the commit history of the canary branch. You don't have to dig around in bug reports (@TurtleRecall). It works like this:

1. go to https://github.com/topjohnwu/magisk_files
2. select canary branch
3. click "commits"
4. select older commit (in your case 51e925d)
5. click "Browse files"
6. (optional, but recommended) open debug.json and confirm magisk version
7. click magisk-debug.zip
8. click Download

This way you always should be able to download every version ever. Same applies for the master (i.e. release) branch.

Thanks, that's really helpful!

[xerta555]

Same issue for me too on my LG G6 (H870), bootloop.
EDIT: i'm on 7.1.2 (for info).

[xdagee]

bootloop s10e (SM-g970f)

[ihatemicrosoft-was-already-taken]

Unfortunately 20423 won't fix the issue for me, I still end up in fastboot.

[hirenshah]

It fixed the issue for me on my Samsung Note 8 👍🏼

[xerta555]

The 20423 works on my LG G6 (H870) too.

Unfortunately 20423 won't fix the issue for me, I still end up in fastboot.

Have you do a fresh Magisk install ?

[hirenshah]

It fixed the issue for me on my Samsung Note 8 👍🏼

@topjohnwu

I spoke too soon. MM doesn't open any more and root access cannot be obtained.

Flashing v20.4 again has restored usual functionality.

Something is definitely broken in the last couple of updates.

[ch3mn3y]

With 20423 everything is fine. Thank You