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Date:   Wed, 12 Apr 2023 07:34:16 +1000
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Jens Axboe <axboe@kernel.dk>
Cc:     Josh Poimboeuf <jpoimboe@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>
Subject: Re: linux-next: build warnings after merge of the block tree
Message-ID: <20230412073416.73a8ea1a@canb.auug.org.au>
In-Reply-To: <20230328104719.65133586@canb.auug.org.au>
References: <20230327120017.6bb826d7@canb.auug.org.au>
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 <20230328104719.65133586@canb.auug.org.au>
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Hi all,

On Tue, 28 Mar 2023 10:47:19 +1100 Stephen Rothwell <sfr@canb.auug.org.au> =
wrote:
>
> On Mon, 27 Mar 2023 09:26:30 -0700 Josh Poimboeuf <jpoimboe@kernel.org> w=
rote:
> >
> > On Mon, Mar 27, 2023 at 12:00:17PM +1100, Stephen Rothwell wrote: =20
> > >=20
> > > After merging the block tree, today's linux-next build (x86_64
> > > allnoconfig) produced these warnings:
> > >=20
> > > lib/iov_iter.o: warning: objtool: .altinstr_replacement+0x0: redundan=
t UACCESS d
> > > isable
> > > lib/iov_iter.o: warning: objtool: iovec_from_user.part.0+0xc7: call t=
o copy_comp
> > > at_iovec_from_user.part.0() with UACCESS enabled
> > > lib/iov_iter.o: warning: objtool: __import_iovec+0x21d: call to copy_=
compat_iovec_from_user.part.0() with UACCESS enabled
> > >=20
> > > Presumably introduced by commit
> > >=20
> > >   6376ce56feb6 ("iov_iter: import single vector iovecs as ITER_UBUF")=
   =20
> >=20
> > I'm not able to recreate.  What's your compiler version? =20
>=20
> $ x86_64-linux-gnu-gcc --version
> x86_64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0

Any progress?
--=20
Cheers,
Stephen Rothwell

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