dlil_output_list and interface filters
dlil_output_list and interface filters
- Subject: dlil_output_list and interface filters
- From: Anton Kuzmin <email@hidden>
- Date: Fri, 09 Jun 2006 20:20:17 +0100
I've been trying to nail down a mysterious kernel panic that occurs when
our KPI interface
filter is enabled and stumbled across a possible reason for it: in
dlil_output_list after a call
to filt_output, a check for EJUSTRETURN leads to what seems to be an
erroneous "continue",
which skips to the next interface filter instead of bailing out.
So basically any packet consumed by an interface filter still gets
passed to if_output and freed,
which leads to a nasty surprise for an unsuspecting filter still
referencing the freed mbuf.
Could someone do a sanity check on this and if it's indeed a bug, I'll
file a radar.
Also, I would be grateful if someone could explain why a failure to
process a single packet from
a list should cause freeing of the whole list.
Thanks,
Anton
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