linux-kernel - Re: linux-next: build warnings after merge of the block tree

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Message-ID: <20230328104719.65133586@canb.auug.org.au>
Date:   Tue, 28 Mar 2023 10:47:19 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Josh Poimboeuf <jpoimboe@...nel.org>
Cc:     Jens Axboe <axboe@...nel.dk>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build warnings after merge of the block tree

Hi Josh,

On Mon, 27 Mar 2023 09:26:30 -0700 Josh Poimboeuf <jpoimboe@...nel.org> wrote:
>
> On Mon, Mar 27, 2023 at 12:00:17PM +1100, Stephen Rothwell wrote:
> > 
> > After merging the block tree, today's linux-next build (x86_64
> > allnoconfig) produced these warnings:
> > 
> > lib/iov_iter.o: warning: objtool: .altinstr_replacement+0x0: redundant UACCESS d
> > isable
> > lib/iov_iter.o: warning: objtool: iovec_from_user.part.0+0xc7: call to 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
> > 
> > Presumably introduced by commit
> > 
> >   6376ce56feb6 ("iov_iter: import single vector iovecs as ITER_UBUF")  
> 
> I'm not able to recreate.  What's your compiler version?

$ x86_64-linux-gnu-gcc --version
x86_64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0

-- 
Cheers,
Stephen Rothwell

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