Playing with fuzzers
Matthew Dillon
dillon at apollo.backplane.com
Fri Sep 15 21:00:41 PDT 2006
:He also has some backraces that were caused by the fuzzer here:
:
:ilja.netric.org/files/dfbsd.bmp
:ilja.netric.org/files/dfbsd.2bmp <<<<
That one should be dfbsd2.bmp. Took a second to figure it out :-)
In anycase, that one is due to the kernel malloc limit being hit
for file descriptors. Simple calculations show that a single user
can blow away the entire malloc space.
I'm not sure how best to fix this one. The issue is basically
that (descriptors * maxproc) greatly exceeds available kernel
memory. One can fix it by reducing descriptors or reducing maxproc.
-Matt
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