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

[Greg KH <gregkh@linuxfoundation.org>]

On Mon, Feb 24, 2025 at 11:28:22PM +0100, Ben Hutchings wrote:
> 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.

I'll take either, whch do you want us to do?

thanks,

greg k-h