Bug 435029

Description of problem:
Random data corruption will occur with the stock 3w-xxxx driver on RHEL 5 x86_64
 when a system has more then 2GB of RAM installed

Reference KB issue at 3ware site:
----
http://www.3ware.com/KB/article.aspx?id=15243&cNode=6I1C6S [^]

If you have an Intel 64-bit EM64T system with 4 GB or more of system RAM, then
you should not use the 7000/8000 series in kernel driver 3w-xxxx if you are
using Linux kernels 2.6.15 through 2.6.22.

Instead you should use the driver source from this KB article to compile a new
driver.

You can still install Linux by specifying mem=2048M, then update the driver
after you install.

3ware 9000 series controllers are not affected by this issue.
-------

Version-Release number of selected component (if applicable):
1.26.02.001

How reproducible:
Big inserts into MySQL, download big files with wget (md5 corruption will
occur), compiles fail at random

Steps to Reproduce:
1. download a big file (rpm, tar.gz)
2. try to install it or unpack it
3. it may or may not be corrupt, rinse and repeat a few times for it to occur 

Same steps above when compiling bigger packages like php5 or apache2, it'll kick
out with a random error, a lot of times something like:

main/: file not recognized: Is a directory
collect2: ld returned 1 exit status
make: *** [libphp5.la] Error 1

And then after 3 or 4 more make clean and make attempts it compiles properly

Actual results:
md5 hash failures, compile errors, crashed mysql tables

Expected results:
none of the above

Additional info:
The new 3ware driver seems to fix it (to be found at above KB article at 3ware site)

New driver:
[root@shell test]# modinfo 3w-xxxx
filename:       /lib/modules/2.6.18-53.1.13.el5xen/kernel/drivers/scsi/3w-xxxx.ko
version:        1.26.03.000-2.6.18
license:        GPL
description:    3ware Storage Controller Linux Driver
author:         AMCC
srcversion:     B64D36FA9760E90E0F5A538
alias:          pci:v000013C1d00001001sv*sd*bc*sc*i*
alias:          pci:v000013C1d00001000sv*sd*bc*sc*i*
depends:        scsi_mod
vermagic:       2.6.18-53.1.13.el5xen SMP mod_unload gcc-4.1


Old driver:
[root@shell test]# modinfo
/lib/modules/2.6.18-53.1.13.el5xen/kernel/drivers/scsi/3w-xxxx.ko.old 
filename:      
/lib/modules/2.6.18-53.1.13.el5xen/kernel/drivers/scsi/3w-xxxx.ko.old
version:        1.26.02.001
license:        GPL
description:    3ware Storage Controller Linux Driver
author:         AMCC
srcversion:     3F506C6CE1CD3C5858E2583
alias:          pci:v000013C1d00001001sv*sd*bc*sc*i*
alias:          pci:v000013C1d00001000sv*sd*bc*sc*i*
depends:        scsi_mod
vermagic:       2.6.18-53.1.13.el5xen SMP mod_unload gcc-4.1
module_sig:
883f35047b1ec24c03ff3a61aa023c311265380a0b6a79772f1a4527d4933af4ea2552a5e3b0f49409f7ba13c2ce939fd7f380786e8747ec1e9f42c0e5