TXM panic when something tries to mount a DDI / load a dynamic trustcache

[hostedbyjustus]

No idea why I only am getting this issue in some cases but basically I get a panic when opening SideStore while connected to a VPN and while Jailbroken. Happens pretty much most of the time but not always. I do have it set so the VPN autoconnects when using SideStore but that issue happened before as well. I am using the iPhone 15 Pro on iOS 17.2.1. I have the panic log added as an attachement. Just hope it's the correct one. Otherwise that obviously doesn't help. Thanks for the awesome Jailbreak, just hope that can be fixed :)

panic-full-2026-08-08-194005.0002.zip

[hostedbyjustus]

Just noticing this feels like issue #388 although I'm not sure. Definitely weird that it's not a panic that happens 100%.

[opa334]

That's really odd and definitely not related to the other panic :/

[opa334]

I have an idea what could cause this though!

[opa334]

try this build for the time being, I will push this in a few hours potentially https://github.com/opa334/Dopamine/actions/runs/31276184354/artifacts/9027178433

[hostedbyjustus]

try this build for the time being, I will push this in a few hours potentially https://github.com/opa334/Dopamine/actions/runs/31276184354/artifacts/9027178433

I can confirmed this fixed the issue. That was resolved very quickly indeed. Thanks.

[hostedbyjustus]

@opa334 Unfortunately I have seemed to run into the same issue again though I can't replicate it. Again it happened with SideStore but now this issue doesn't trigger. Maybe you can take a look at this new panic log.

panic-full-2026-08-09-155426.0002.zip

[opa334]

Hmm, it may be an issue even with IOSurface allocations. Might need to change the page table entry myself to allow TXM to write to it.

[viktorkuts]

I can also confirm this behavior on iPhone 15 Pro on 17.3 with 3.0.4. Though there are some things I noticed. For me it happens more often if you connect to the localdevvpn + open sidestore right after booting up eg. rebooting userspace or right after jailbreak. If I connect right away afterwards to the vpn and open sidestore, this behavior has more chances to occur.

panic-full-2026-08-11-103157.0002.zip

[opa334]

Yeah I know, I can reproduce the panic on demand now. But unfortunately it is more complicated to fix than I initially anticipated because SPTM kills me when I change the page table to make the page writable by TXM.

[4rtz1z]

Got same problem
#932