[FS#438] ar7xx: missing/unknown modules

[LEDE Bugs]

The following task has a new comment added:

FS#438 - ar7xx: missing/unknown modules
User who did this - bolvan (bolvan)

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try "iw aaaaaa" and logread.
modprobe process is called directly by kernel and only if "iw" was run under root. I replaced kmodloader (modprobe is linked to it) with bash script to print $PPID and it was kworker process

It looks like dirty kernel hack or misbehaving feature in openwrt environment
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=438#comment1543