Re: [PATCH 5.4,5.10 2/2] udf: Fix use of check_add_overflow() with mixed type arguments

On Mon, 2025-02-24 at 17:00 +0100, Ben Hutchings wrote:

Commit ebbe26fd54a9 "udf: Avoid excessive partition lengths" introduced a use of check_add_overflow() with argument types u32, size_t, and u32 *.

This was backported to the 5.x stable branches, where in 64-bit configurations it results in a build error (with older compilers) or a warning. Before commit d219d2a9a92e "overflow: Allow mixed type arguments", which went into Linux 6.1, mixed type arguments are not supported. That cannot be backported to 5.4 or 5.10 as it would raise the minimum compiler version for these kernel versions.

[....]

And for 5.15, I think it should be safe to backport commit d219d2a9a92e. Otherwise this patch should be applied to fix the warning there.

Ben.