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    SubjectSources for LKPK (Live Kernel Patching Kit)


    I have put sources for LKPK at

    It it is NOT finished, and I have put it there so that
    peple and take a look and make suggestions.

    First you want to lookup the README file, it has the details.

    You want to look at the the 'obo' dir (off-by-one bug) for
    a proof of concept. HOWEVER, note that it is against,
    2.1.x not 2.0.x kernels, so it is not terribly usefull
    for patching actual OBO bug :P

    You want look at 'sigio' dir (SIGIO bug) if you want to try
    to contribute. This code is based on obo code but significatly
    improved, modularized, commented. However, this code is not
    working as of yet -- that is does noting currently.


    Here is example of aplying OBO fix.

    [root@styx ip_glue]# make clean
    rm -f ip_glue.o ip_glue.h
    [root@styx ip_glue]# make
    Var 'IP_GLUE' at '0xc0169b04'.
    gcc -D__KERNEL__ -I/usr/src/linux/include \
    -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strength-reduce \
    -pipe -m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2 \
    -include /usr/src/linux/include/linux/modversions.h \
    -c -o ip_glue.o ip_glue.c

    [root@styx ip_glue]# make in
    [root@styx ip_glue]# dmesg | tail -6
    IP_GLUE_MOD : loading module
    rel / ver : 2.1.109 / #6 Fri Jul 17 00:55:34 EDT 1998
    Saving old IP_GLUE header : 00 c3 [ 83 ec 0c 55 57 ] 56 53 8b 4c 24 20
    ip_glue:[<c0169b04>] ip_glue_new:[<c4016178>] offset:[<03eac66f>]
    Installing JMP to NEW IP_GLUE header : [ e9 6f c6 ea 03 ]
    IP_GLUE_MOD : module loaded

    [root@styx ip_glue]# make out
    [root@styx ip_glue]# dmesg | tail -3
    IP_GLUE_MOD : unloading module
    Restoring old IP_GLUE header : [ 83 ec 0c 55 57 ]
    IP_GLUE_MOD : module unloaded
    [root@styx ip_glue]#


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