Release Notes

Reading EEPROM from a Broadcom device via ethtool
results in soft lockup
Description: With Broadcom network adapters, reading EEPROM via ethtool –e<interface name> results in
CPU soft lock, when cable is not connected to the port.
Applies to: Red Hat Enterprise Linux 7.0
Cause: When cable is not connected, the clock speed of the device becomes slow, based on the power saving
mode setting defined in NVRAM. Due to this, EEPROM reads take a long time to complete and results in
CPU soft lockup.
Workaround: Ensure that cable is connected to the specific port before reading EEPROM on that port.
Error during the first boot on iSCSI disk
Description: When Red Hat Enterprise Linux 7.0 is installed on iSCSI disk from Broadcom 10G network adapter, dmesg
shows the following error message:
● Failed to empty BRB.
● Storm stats were not updated for three times.
● Driver assert.
● Begin crash/panic dump.
Applies to: Red Hat Enterprise Linux 7.0
Cause: BRB is not cleared by the bnx2x driver during the iSCSI boot that was previously used by the UNDI
driver.
Workaround: Reboot the system.
Enabling SR-IOV virtual functions on both Intel and
Mellanox cards result in invalid naming conventions
for the network devices
Description:
While rebooting, the naming conventions by biosdevname may not be accurate for all the networking
devices, when SR-IOV virtual functions are enabled by systemd on both Intel and Mellanox devices at
the same time.
Applies to: Red Hat Enterprise Linux 7.0
Cause: The mlx4_core driver consumes more time for the probe of all the VFs, which results in termination of
biosdevname.
Workaround: Enable SR-IOV on Intel using the sysfs method.
Mellanox card does not display supported link modes
as 40G
Description:
The Mellanox 40G Network card does not display the supported link modes as 40G. Instead, it is displayed
as 10G.
Known issues 43