mlnx_add_kernel_support.sh and magic version errors.

I have successfully built and installed ofed 3.2-2.0.0.0 on an Oracle Enterprise Linux 6.7 system. I tested this ofed installation in ethernet emulation mode with iperf3  and a ConnectX-4 port looping back to the other ConnectX-4 port on the same system. I disabled the internal loopback and configured nat to force the data to be issued over the physical IB cable.

I used the same build and install sequence on a simulator system with a custom kernel based on Oracle Enterprise Linux 7.1. This system is failing "mst start"

I used MLNX_OFED_LINUX-3.2-2.0.0.0-oel7.1-x86_64.tgz and the mlnx_add_kernel_support.sh completed without issue.

Here is the uname info for the custom kernel the system is running:

# uname -a

Linux  4.1.12-32.el7uek-axnp.debug.070000.009400 #1 SMP Fri Jan 29 12:18:44 PST 2016 x86_64 x86_64 x86_64 GNU/Linux

The extra modules directory is populated with what seems like the correct directories and files:

# ls /usr/lib/modules/4.1.12-32.el7uek-axnp.debug.070000.009400/extra

dmadriver_api_mod.ko  knem             pdgCommon.ko     slbmgr_api_mod.ko

i40e.ko               ksimod.ko        pdgPm8018.ko     slbmgrmod.ko

iser                  mlnx-ofa_kernel  pdgQlSan.ko      srp

kernel-mft            nvdimm.ko        psg_services.ko  tdsmod.ko

The mst modules are present:

# ls ./usr/lib/modules/4.1.12-32.el7uek-axnp.debug.070000.009400/extra/kernel-mft/

mst_pciconf.ko  mst_pci.ko

However "mst start" fails for "version magic":

# mst start

Starting MST (Mellanox Software Tools) driver set

Loading MST PCI modulemodprobe: ERROR: could not insert 'mst_pci': Exec format error

- Failure: 1

Loading MST PCI configuration modulemodprobe: ERROR: could not insert 'mst_pciconf': Exec format error

- Failure: 1

Create devices

mst_pci driver not found

Unloading MST PCI module (unused) - Success

Unloading MST PCI configuration module (unused) - Success

From dmesg:

[ 2264.895260] mst_pci: version magic '4.1.12-32.el7uek-axnp.debug SMP mod_unload ' should be '4.1.12-32.el7uek-axnp.debug.070000.009400 SMP mod_unload '

[ 2265.048972] mst_pciconf: version magic '4.1.12-32.el7uek-axnp.debug SMP mod_unload ' should be '4.1.12-32.el7uek-axnp.debug.070000.009400 SMP mod_unload '

It looks like the .070000.009400 is being truncated off the "version magic" in the mst_pci and mst_pciconf modules.

Is there a string length limit for the kernel versioning in mlnx_add_kernel_support.sh?