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[ Upstream commit 0eb9d19e2201068260e439a5c96dc85f9f3722a2 ] Fix modulo zero, division by zero, overflow, and underflow. Also clarify how a negative immediate value is used in unsigned division. Signed-off-by: Dave Thaler <dthaler@microsoft.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20230124001218.827-1-dthaler1968@googlemail.com Signed-off-by: Sasha Levin <sashal@kernel.org>