2019-02-20 02:16:55

by Stephen Rothwell

[permalink] [raw]

Subject: linux-next: build warning after merge of the device-mapper tree

---

Hi all,

After merging the device-mapper tree, today's linux-next build
(powerpc_ppc64_defconfig) produced this warning:

In file included from include/linux/blkdev.h:21,
from include/linux/blk-mq.h:5,
from drivers/md/dm-core.h:14,
from drivers/md/dm.c:8:
drivers/md/dm.c: In function 'dec_pending':
include/linux/bio.h:626:15: warning: 'bio' may be used uninitialized in this function [-Wmaybe-uninitialized]
bio->bi_next = bl->head;
~~~~~~~~~~~~~^~~~~~~~~~
drivers/md/dm.c:930:14: note: 'bio' was declared here
struct bio *bio;
^~~

Introduced by commit

58c66b86cfe7 ("dm: improve noclone_endio() to support multipath target")

--
Cheers,
Stephen Rothwell

---

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2019-02-20 03:36:18

by Mike Snitzer

[permalink] [raw]

Subject: Re: linux-next: build warning after merge of the device-mapper tree

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On Tue, Feb 19 2019 at 9:15pm -0500,
Stephen Rothwell <[email protected]> wrote:

> Hi all,
>
> After merging the device-mapper tree, today's linux-next build
> (powerpc_ppc64_defconfig) produced this warning:
>
> In file included from include/linux/blkdev.h:21,
> from include/linux/blk-mq.h:5,
> from drivers/md/dm-core.h:14,
> from drivers/md/dm.c:8:
> drivers/md/dm.c: In function 'dec_pending':
> include/linux/bio.h:626:15: warning: 'bio' may be used uninitialized in this function [-Wmaybe-uninitialized]
> bio->bi_next = bl->head;
> ~~~~~~~~~~~~~^~~~~~~~~~
> drivers/md/dm.c:930:14: note: 'bio' was declared here
> struct bio *bio;
> ^~~
>
> Introduced by commit
>
> 58c66b86cfe7 ("dm: improve noclone_endio() to support multipath target")

Thanks, I've fixed it up.

Mike