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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