[FS#96] segfault in kmodloader (ubox)

[LEDE Bugs]

The following task has a new comment added:

FS#96 - segfault in kmodloader (ubox)
User who did this - Artox (Artox)

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Debugged this further:
Can be reproduced by deleting /lib/modules/
in that case:
kmodloader.c:612
init_module_folders(); // returns -1, but return value is ignored
kmodloder.c:102
returns -1 without appending a NULL element to the empty list

then
kmodloader.c:614: get_module_path gets called, and tries to dereference module_folders
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=96#comment248