A fix for this problem is now available:
twitter.com/DanielMicay/st
Patch: lore.kernel.org/patchwork/patc.
It's still going to be an annoyance for me after it's fixed due to older kernels though.
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I found an apparent bug in the Linux kernel Memory Protection Keys implementation:
github.com/AndroidHardeni
It loses the Memory Protection Keys setup on fork. I wasn't entirely sure if this was a bug or just an odd design but I contacted the maintainer and they think it's a bug.
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