Description of problem:
Since kernel-2.6.39.x I cannot boot the kernel because I'm flooded with the message:

microcode: microcode: CPU0: AMD CPU family 0xf not supported

I filed a bug against the kernel and it turned out that udev actually tries indefinitely to load the microcode module. https://bugzilla.kernel.org/show_bug.cgi?id=35522

The offensive code is in /lib/udev/rules.d/89-microcode.rules and after blacklisting the module everything is fine. When I try to manually load it (after booting with it being disabled) I get:

[root@localhost ~]# modprobe -v microcode
insmod /lib/modules/2.6.39-0.fc16.x86_64/kernel/arch/x86/kernel/microcode.ko 
FATAL: Error inserting microcode
(/lib/modules/2.6.39-0.fc16.x86_64/kernel/arch/x86/kernel/microcode.ko):
Invalid argument

and after this I got the following into dmesg:

[  170.459160] microcode: CPU0: family 15 not supported

Version-Release number of selected component (if applicable):
kernel-3.0-0.rc3.git5.1.fc16.x64_86
udev-171-2.fc16.x64_86

How reproducible:
Boot the pc

Expected results:
udev gives up if the module doesn't want to load.

Additional info:
My processor is:
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 104
model name      : AMD Turion(tm) 64 X2 Mobile Technology TL-60
stepping        : 1
cpu MHz         : 2000.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm
3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm
extapic cr8_legacy 3dnowprefetch lbrv
bogomips        : 1999.99
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

processor       : 1
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 104
model name      : AMD Turion(tm) 64 X2 Mobile Technology TL-60
stepping        : 1
cpu MHz         : 2000.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 1
core id         : 1
cpu cores       : 2
apicid          : 1
initial apicid  : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm
3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm
extapic cr8_legacy 3dnowprefetch lbrv
bogomips        : 1999.99
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps