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ethtool: prevent endless loop if eeprom size is smaller than announced
authorHeiner Kallweit <hkallweit1@gmail.com>
Mon, 13 Sep 2021 19:58:26 +0000 (21:58 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 14 Sep 2021 13:26:47 +0000 (14:26 +0100)
commitb9bbc4c1debc837ba56872fb3b2499ba6459ca8b
tree51388f433d655fbd5996d4b2a550f305cd144300tree | snapshot
parent0f440524b69787ec2a843bc474a786beabc0bfa9commit | diff
ethtool: prevent endless loop if eeprom size is smaller than announced

It shouldn't happen, but can happen that readable eeprom size is smaller
than announced. Then we would be stuck in an endless loop here because
after reaching the actual end reads return eeprom.len = 0. I faced this
issue when making a mistake in driver development. Detect this scenario
and return an error.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ethtool/ioctl.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git