[SRU][Focal][PATCH 0/1] ice: Fix bad register reads

[Michael Reed]

From: Michael Reed <Michael.Reed at canonical.com>

BugLink:  https://launchpad.net/bugs/1939855

[Impact]

When we run the command, ethtool -d <interface_name> with Intel cards (ice driver), the kernel crashes because of the ice driver.
The same works fine with HWE kernel (5.11). Here, we do not see any crash.

[FIXES]

ice: Fix bad register reads
The "ethtool -d" handler reads registers in the ice_regs_dump_list array
and returns read values back to the userspace.

commitID: 1fba4a8a92706c89716449b1aab1b6879f438d34

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/drivers/net/ethernet/intel/ice?id=1fba4a8a92706c89716449b1aab1b6879f438d34

[TESTING]

Install Focal on a system with an E810 network device.
Ensure the network device has an IP address and has connectivity
Run ethtool -d <interface_name>
Expected result: Prints a register dump for the specified network device

[REGRESSION RISK]

The regression risk is low

[OTHER INFO]

I have added the fix, built the kernel and tested the fix.

https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/focal/+ref/e810_ethtool_fix_next


Anirudh Venkataramanan (1):
  ice: Fix bad register reads

 drivers/net/ethernet/intel/ice/ice_ethtool.c    | 3 ---
 drivers/net/ethernet/intel/ice/ice_hw_autogen.h | 3 ---
 2 files changed, 6 deletions(-)

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2.25.1