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From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Linus Torvalds
	<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Hal Rosenstock
	<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>,
	Bart Van Assche
	<bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>,
	Alex Vesker <valex-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Guy Shapiro <guysh-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 03/28] [v2] infiniband: shut up a maybe-uninitialized warning
Date: Tue, 18 Oct 2016 12:18:55 +0200	[thread overview]
Message-ID: <9469876.gij7f9Mh1b@wuerfel> (raw)
In-Reply-To: <33302790-0a4c-e2b3-868d-3e7dadbd3c07-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

On Tuesday, October 18, 2016 9:47:31 AM CEST Haggai Eran wrote:
> On 10/18/2016 1:05 AM, Arnd Bergmann wrote:
> > @@ -1309,7 +1311,7 @@ static bool validate_net_dev(struct net_device *net_dev,
> >  static struct net_device *cma_get_net_dev(struct ib_cm_event *ib_event,
> >                                         const struct cma_req_info *req)
> >  {
> > -     struct sockaddr_storage listen_addr_storage, src_addr_storage;
> > +     struct sockaddr_storage listen_addr_storage = {}, src_addr_storage = {};
> 
> Doesn't this still translate to an extra initialization that Doug was
> worried about?

Thanks for spotting this. I must have screwed up while rebasing the patch
at some point, this one change should not be there, the other changes by
themselves sufficiently address the warning.

	Arnd
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WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: Haggai Eran <haggaie@mellanox.com>
Cc: Doug Ledford <dledford@redhat.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-kernel@vger.kernel.org, Sean Hefty <sean.hefty@intel.com>,
	Hal Rosenstock <hal.rosenstock@gmail.com>,
	Matan Barak <matanb@mellanox.com>,
	Leon Romanovsky <leon@kernel.org>,
	Sagi Grimberg <sagi@grimberg.me>,
	Bart Van Assche <bart.vanassche@sandisk.com>,
	Alex Vesker <valex@mellanox.com>,
	Guy Shapiro <guysh@mellanox.com>,
	linux-rdma@vger.kernel.org
Subject: Re: [PATCH 03/28] [v2] infiniband: shut up a maybe-uninitialized warning
Date: Tue, 18 Oct 2016 12:18:55 +0200	[thread overview]
Message-ID: <9469876.gij7f9Mh1b@wuerfel> (raw)
In-Reply-To: <33302790-0a4c-e2b3-868d-3e7dadbd3c07@mellanox.com>

On Tuesday, October 18, 2016 9:47:31 AM CEST Haggai Eran wrote:
> On 10/18/2016 1:05 AM, Arnd Bergmann wrote:
> > @@ -1309,7 +1311,7 @@ static bool validate_net_dev(struct net_device *net_dev,
> >  static struct net_device *cma_get_net_dev(struct ib_cm_event *ib_event,
> >                                         const struct cma_req_info *req)
> >  {
> > -     struct sockaddr_storage listen_addr_storage, src_addr_storage;
> > +     struct sockaddr_storage listen_addr_storage = {}, src_addr_storage = {};
> 
> Doesn't this still translate to an extra initialization that Doug was
> worried about?

Thanks for spotting this. I must have screwed up while rebasing the patch
at some point, this one change should not be there, the other changes by
themselves sufficiently address the warning.

	Arnd

  parent reply	other threads:[~2016-10-18 10:18 UTC|newest]

Thread overview: 114+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-17 22:03 [PATCH 00/28] Reenable maybe-uninitialized warnings Arnd Bergmann
2016-10-17 22:03 ` Arnd Bergmann
2016-10-17 22:05 ` [PATCH 01/28] [v2] netfilter: nf_tables: avoid uninitialized variable warning Arnd Bergmann
2016-10-18 15:23   ` Pablo Neira Ayuso
2016-10-17 22:05 ` [PATCH 02/28] [v2] mtd: mtk: avoid warning in mtk_ecc_encode Arnd Bergmann
2016-10-17 22:05   ` Arnd Bergmann
2016-10-17 22:05   ` Arnd Bergmann
2016-10-18  5:19   ` Boris Brezillon
2016-10-18  5:19     ` Boris Brezillon
2016-10-18 10:12     ` RogerCC.Lin
2016-10-18 10:12       ` RogerCC.Lin
2016-10-18 10:12       ` RogerCC.Lin
2016-10-18 19:45       ` Boris Brezillon
2016-10-18 19:45         ` Boris Brezillon
2016-10-18 19:45         ` Boris Brezillon
     [not found] ` <20161017220342.1627073-1-arnd-r2nGTMty4D4@public.gmane.org>
2016-10-17 22:05   ` [PATCH 03/28] [v2] infiniband: shut up a maybe-uninitialized warning Arnd Bergmann
2016-10-17 22:05     ` Arnd Bergmann
     [not found]     ` <20161017220557.1688282-3-arnd-r2nGTMty4D4@public.gmane.org>
2016-10-18  6:47       ` Haggai Eran
2016-10-18  6:47         ` Haggai Eran
     [not found]         ` <33302790-0a4c-e2b3-868d-3e7dadbd3c07-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-10-18 10:18           ` Arnd Bergmann [this message]
2016-10-18 10:18             ` Arnd Bergmann
2016-10-18 10:32             ` Haggai Eran
2016-10-18 10:32               ` Haggai Eran
2016-10-17 22:05 ` [PATCH 04/28] f2fs: replace a build-time warning with runtime WARN_ON Arnd Bergmann
2016-10-17 22:05   ` Arnd Bergmann
2016-10-26 14:05   ` [f2fs-dev] " Chao Yu
2016-10-26 14:57     ` Arnd Bergmann
2016-10-27 11:41       ` Chao Yu
2016-10-27 11:41         ` Chao Yu
2016-10-17 22:05 ` [PATCH 05/28] ext2: avoid bogus -Wmaybe-uninitialized warning Arnd Bergmann
2016-10-18  5:15   ` Christoph Hellwig
2016-10-18  9:30     ` Jan Kara
2016-10-17 22:05 ` [PATCH 06/28] NFSv4.1: work around " Arnd Bergmann
2016-10-17 22:08 ` [PATCH 07/28] ceph: avoid false positive maybe-uninitialized warning Arnd Bergmann
2016-10-18  2:07   ` Yan, Zheng
2016-10-17 22:08 ` [PATCH 08/28] staging: lustre: restore initialization of return code Arnd Bergmann
2016-10-17 22:08   ` [lustre-devel] " Arnd Bergmann
2016-10-17 22:23   ` Patrick Farrell
2016-10-17 22:29     ` Arnd Bergmann
2016-10-17 22:29       ` Arnd Bergmann
2016-10-17 22:37       ` Linus Torvalds
2016-10-17 22:37         ` Linus Torvalds
2016-10-17 23:00         ` Arnd Bergmann
2016-10-17 23:00           ` Arnd Bergmann
2016-10-17 22:42   ` [PATCH 08/28 v2] " Arnd Bergmann
2016-10-17 22:42     ` [lustre-devel] " Arnd Bergmann
2016-10-17 22:08 ` [PATCH 09/28] staging: lustre: remove broken dead code in cfs_cpt_table_create_pattern Arnd Bergmann
2016-10-17 22:08   ` [lustre-devel] " Arnd Bergmann
2016-10-17 22:10 ` [PATCH 10/28] UBI: fix uninitialized access of vid_hdr pointer Arnd Bergmann
2016-10-18  5:17   ` Boris Brezillon
2016-10-17 22:10 ` [PATCH 11/28] block: rdb: false-postive gcc-4.9 -Wmaybe-uninitialized Arnd Bergmann
2016-10-18  9:57   ` Ilya Dryomov
2016-10-18 10:04     ` Arnd Bergmann
2016-10-17 22:12 ` [PATCH 12/28] [media] rc: print correct variable for z8f0811 Arnd Bergmann
2016-10-17 22:13 ` [PATCH 13/28] [media] dib0700: fix uninitialized data on 'repeat' event Arnd Bergmann
2016-10-17 22:13 ` [PATCH 14/28] iio: accel: sca3000_core: avoid potentially uninitialized variable Arnd Bergmann
2016-10-17 22:13   ` Arnd Bergmann
2016-10-23 21:25   ` Jonathan Cameron
2016-10-17 22:13 ` [PATCH 15/28] crypto: aesni: avoid -Wmaybe-uninitialized warning Arnd Bergmann
2016-10-17 22:13 ` [PATCH 16/28] pcmcia: fix return value of soc_pcmcia_regulator_set Arnd Bergmann
2016-10-18  9:42   ` Russell King - ARM Linux
2016-10-17 22:13 ` [PATCH 17/28] spi: fsl-espi: avoid processing uninitalized data on error Arnd Bergmann
2016-10-24 17:27   ` Mark Brown
2016-10-24 17:27     ` Mark Brown
2016-10-24 18:36     ` Heiner Kallweit
2016-10-24 18:36       ` Heiner Kallweit
2016-10-24 18:45       ` Mark Brown
2016-10-24 20:37         ` Arnd Bergmann
2016-10-25 19:13           ` Mark Brown
2016-10-25 19:13             ` Mark Brown
2016-10-25 20:57             ` Arnd Bergmann
2016-10-26 10:15   ` Applied "spi: fsl-espi: avoid processing uninitalized data on error" to the spi tree Mark Brown
2016-10-26 18:11     ` Merge problem: " Heiner Kallweit
2016-10-26 21:59       ` Mark Brown
2016-10-26 21:59         ` Mark Brown
2016-10-17 22:13 ` [PATCH 18/28] drm: avoid uninitialized timestamp use in wait_vblank Arnd Bergmann
2016-10-17 22:13   ` Arnd Bergmann
2016-10-17 23:47   ` Mario Kleiner
2016-10-17 23:47     ` Mario Kleiner
2016-10-18  7:46     ` Daniel Vetter
2016-10-18  7:46       ` Daniel Vetter
2016-10-17 22:13 ` [PATCH 19/28] brcmfmac: avoid maybe-uninitialized warning in brcmf_cfg80211_start_ap Arnd Bergmann
2016-10-26  6:49   ` Kalle Valo
2016-10-26  6:49     ` Kalle Valo
2016-10-26  9:57     ` Arnd Bergmann
2016-10-26 11:11       ` Kalle Valo
2016-10-26 11:11         ` Kalle Valo
2016-10-26 11:11         ` Kalle Valo
2016-10-27 15:05   ` [19/28] " Kalle Valo
2016-10-27 15:05     ` Kalle Valo
2016-10-17 22:16 ` [PATCH 20/28] net: bcm63xx: avoid referencing uninitialized variable Arnd Bergmann
2016-10-17 22:16   ` Arnd Bergmann
2016-10-18 18:21   ` David Miller
2016-10-18 18:21     ` David Miller
2016-10-17 22:16 ` [PATCH 21/28] net/hyperv: avoid " Arnd Bergmann
2016-10-17 22:16   ` Arnd Bergmann
2016-10-18 18:21   ` David Miller
2016-10-17 22:16 ` [PATCH 22/28] x86: apm: avoid uninitialized data Arnd Bergmann
2016-10-18 13:05   ` Jiri Kosina
2016-10-18 21:35   ` Luis R. Rodriguez
2016-10-17 22:16 ` [PATCH 23/28] x86: mark target address as output in 'insb' asm Arnd Bergmann
2016-10-17 22:16 ` [PATCH 24/28] x86: math-emu: possible uninitialized variable use Arnd Bergmann
2016-10-17 22:16 ` [PATCH 25/28] s390: pci: don't print uninitialized data for debugging Arnd Bergmann
2016-10-18  6:48   ` Martin Schwidefsky
2016-10-18  8:53     ` Sebastian Ott
2016-10-17 22:16 ` [PATCH 26/28] nios2: fix timer initcall return value Arnd Bergmann
2016-10-24  0:54   ` Ley Foon Tan
2016-10-17 22:16 ` [PATCH 27/28] rocker: fix maybe-uninitialized warning Arnd Bergmann
2016-10-18 18:21   ` David Miller
2016-10-17 22:19 ` [PATCH 28/28] Kbuild: bring back -Wmaybe-uninitialized warning Arnd Bergmann
2016-10-17 22:19   ` Arnd Bergmann
2016-10-17 22:19   ` Arnd Bergmann
2016-10-17 22:19   ` Arnd Bergmann
2016-10-18  5:08 ` [PATCH 00/28] Reenable maybe-uninitialized warnings Christoph Hellwig

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