Undecimus: iPhone 6+ A1522 Kernel Panic while trying to jailbreak with reload system daemons

[xMilesManx]

---

name: bug report
about: Create a report to help us improve
title: ''
labels: bug
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---

Describe the bug
I've spent extensive time testing the new beta on my phone but it seems that this issue will not go away. I first thought it was a problem with tweaks I have installed so I decided to restore rootFS and test.

This is what happens to my device: the jailbreak process will proceed normally and succeed. The device will then respring. The respring process takes up to anywhere between 30 seconds to 5 minutes and instead of loading springboard normally, the device will kernel panic and reboot.

It seems inconsistent. Before restoring rootFS, success with reloading system daemons set to ON was nearly impossible. After restoring rootFS the panic occurs roughly 3/10 tries.\

Just to be perfectly clear, these panics are with ZERO tweaks or additional dependencies installed. Only the essential updates from cydia.

I can't really read these logs, but my guess is that watchdog timer is killing the system after 90 seconds.

The issue was MUCH MUCH more common with tweaks installed. If I had xenhtml, snowboard, and a few that use rocketbootstrap, I simply could not jailbreak with reload system daemons at all without the device rebooting.

To Reproduce
Steps to reproduce the behavior:

1. Install Unc0ver
2. Jailbreak with restore rootfs - phone reboots
3. Jailbreak again - snapshot is saved and reboot
4. jailbreak again - installed cydia and reboots
   5 Jailbreak again with load tweaks and reload system daemons ON
   6 Device will either succeed or kernel panic.

Screenshots
none

Device (please complete the following information):

• iOS Version: 12.1.2 Build 16C104
  
  
  
  • iOS Device: iPhone 6+ A1522
  
  
• unc0ver Version: b49

Place an "x" between the brackets if true:

• [ x] this is a bug others will be able to reproduce
• [ x] this issue is present with all tweaks uninstalled(except for default packages) or disabled
• [ x] this issue is present after a rootfs restore
• [ x] this issue is present on the latest version of unc0ver

Logs

panic-full-2019-04-07-212717.760.ips.txt
panic-full-2019-04-07-131751.897.ips.txt
panic-full-2019-04-07-105734.689.ips.txt

I can do any sort of testing or provide any helpful follow up information if needed.

Thank you for this amazing jailbreak!

[WalshyDev]

It's a known issue tweaks can cause this, I believe it had to do with them using old/broken hooks in Substrate. I recommend just updating any tweaks you know cause this (things like RocketBoootstrap and Snowboard are updated for this already). If an app doesn't have an update to fix this but has the issue then contact that developer.

This isn't something that can be fixed in unc0ver.

[xMilesManx]

Hey thanks for your response.

If you reread the description, I explain that this happens after I have restored rootFS and with zero tweaks installed.

“Just to be perfectly clear, these panics are with ZERO tweaks or additional dependencies installed. Only the essential updates from cydia.“

Also, when I had snowboard and rocketbootstrap installed, they were the latest versions that were already updated to fix that respring loop issue.

I will also like to add to this, that I believe this issue has persisted since the a7 support was added.

[xMilesManx]

I plan on performing a full restore to 12.1.2 with future restore and installing u0 on my blank device to test over the next few days.

[xMilesManx]

I wanted to leave a quick update:

This also occurs on the iPad 6,1 A1822 5th Gen Wifi on 12.1.1.

This is with ZERO tweaks installed and the panic occurs after the jailbreak process has completed and during the respring that immediately follows.
panic-full-2019-04-08-223907.414.ips.txt

As far as i'm aware, my iPad HAS NOT HAD this issue before b49, but that is speculation.

[kirand777]

The same on iPhone 6, iOS 12.1.1 beta3

[datitisev]

Same to me, was only able to jailbreak once since (and then jb kernel panicked later on).

iPad Air (2,1), iOS 12.1.1

I do have tweaks, but this occurred even after I restored rootFS because I wasn't able to access the jailbreak.

[xMilesManx]

For anyone who cares about this, this issue seems to have been finally fixed on the latest release. There are other problems on the iPhone 6 that still persist with random reboots and app freezes.