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Subject: [Bug 209428] if_vtnet(4) panics when doing kldunload if_vtnet
Date: Sat, 14 May 2016 06:08:00 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209428

--- Comment #16 from commit-hook@freebsd.org ---
A commit references this bug:

Author: kp
Date: Sat May 14 06:07:15 UTC 2016
New revision: 299725
URL: https://svnweb.freebsd.org/changeset/base/299725

Log:
  vtnet: fix panic on unload

  Since r276367 added the virtio_mmio support vtnet_modevent() gets called
twice.
  This resulted in a memory leak during load and a panic on unload.

  Count the loads so we only initialise once (just like cxgbe(4)), and only
clean
  up in the final unload.

  PR:           209428
  Submitted by: novel@FreeBSD.org
  MFC after:    1 week

Changes:
  head/sys/dev/virtio/network/if_vtnet.c

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