Module Name: src
Committed By: pooka
Date: Mon Dec 6 11:32:01 UTC 2010
Modified Files:
src/tests/net/bpf: Makefile
Added Files:
src/tests/net/bpf: t_bpf.c
Log Message:
Add an xfail test for the mbuf leak described in PR kern/44196.
This is yet another example of a simple test which would be much
trickier to execute against the host kernel. You would either need
to put networking in a complete lockdown, or do some "statistical"
methods where you trigger the bug many many times and attempt to
ascertain a rising trend in mbuf count. And, of course, the leaked
mbufs don't go away from the host kernel once the test ends. In
contrast, we *know* that there is no other networking activity in
a rump kernel, so we can execute the operation exactly once, plus
the leaked mbuf "disappears" when the test is done.
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/tests/net/bpf/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/net/bpf/t_bpf.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
