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net: Enter a net epoch around protocol if_up/down notifications
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Authored by markj on Sep 9 2021, 5:09 PM.
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Details

Summary

When traversing a list of interface addresses, we need to be in a net
epoch section, and protocol ctlinput routines need a stable reference to
the address.

Reported by: syzbot+3219af764ead146a3a4e@syzkaller.appspotmail.com

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rG FreeBSD src repository
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