tree cdc89427b9b22837828adb61551a4529b8c651af
parent e1e17a1715982201034024863efbf238bee2bdf9
author Chengen Du <chengen.du@canonical.com> 1736827954 +0800
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1738180711 -0500

iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic()

When performing an iSCSI boot using IPv6, iscsistart still reads the
/sys/firmware/ibft/ethernetX/subnet-mask entry. Since the IPv6 prefix
length is 64, this causes the shift exponent to become negative,
triggering a UBSAN warning. As the concept of a subnet mask does not
apply to IPv6, the value is set to ~0 to suppress the warning message.

Signed-off-by: Chengen Du <chengen.du@canonical.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>