[Bug 231428] 12.0-ALPHA6 crashes with gif (IPv4 in IPv4) over vtnet

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Mon Sep 17 14:03:01 UTC 2018


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231428

Andrey V. Elsukov <ae at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ae at FreeBSD.org

--- Comment #1 from Andrey V. Elsukov <ae at FreeBSD.org> ---
Encapsulated inbound traffic is handled by ip_encap subsystem, it invokes
gif_input while it is in net_epoch_preempt section. This is why
INP_INFO_UNLOCK_ASSERT() triggers. I think we can solve this issue be relaxing
this KASSERT to require only !mtx_owned(). But this probably can hide some
problems with locking. Or we can use another epoch for ip_encap subsystem.
Matt, what you think?

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