[FS#822] busybox (ash) sporadically segfaults running shell scripts on ar71xx

[LEDE Bugs]

The following task has a new comment added:

FS#822 - busybox (ash) sporadically segfaults running shell scripts on ar71xx
User who did this - Matthias Schiffer (NeoRaider)

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Checked with 4.4.79, no change.

I have also added some debug messages to the kernel for trap-related context switches (like math emulation), and if I didn't overlook anything, no context switches happen anywhere close to these crashes.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=822#comment3167