Bug#4740: Modules-2.0.0 fails to load modules in kernel 2.1.x

[Dale Scheetz <dwarf@polaris.net>]

Package: modules
Version: 2.0.0-8

Insmod fails to load modules with kernels 2.1.x. This failure has to do
with large addresses being concidered an error. The following patch fixed
it for me:

modules-2.0.0/insmod/insmod.c:
        /* We add "sizeof (int)" to skip over the use count */
        addr = create_module(modname, progsize) + sizeof (int);
+
+       /* the preceding may fail since the address in the kernel space
+          * may be greater than 2G. Then addr = -1 and errno = -(realaddr).
+          * We'll check for that and correct.  Boy I hope errno and addr
+          * are the same size.
+          * Note: this means we can't use the last page in virtual memory.
+          */
+       if( errno > 4095 ) {
+           addr = sizeof(int)-errno; /* reverse the math from create_module */
+           errno = 0;
+       /*     insmod_error ("Address wrap bug: %lx", addr); */
+       }
+
        switch (errno) {
        case EEXIST:
                insmod_error ("A module named %s already exists", modname);
                exit(2);

Luck,

Dwarf

------------                                          --------------

aka   Dale Scheetz                   Phone:   1 (904) 877-0257
      Flexible Software              Fax:     NONE 
      Black Creek Critters           e-mail:  dwarf@polaris.net

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