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From: Klaus Jensen <its@irrelevant.dk>
To: marcandre.lureau@redhat.com
Cc: qemu-devel@nongnu.org, "Hyman Huang" <yong.huang@smartx.com>,
	"Vladimir Sementsov-Ogievskiy" <vsementsov@yandex-team.ru>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Gerd Hoffmann" <kraxel@redhat.com>,
	qemu-block@nongnu.org, "Kevin Wolf" <kwolf@redhat.com>,
	"Fabiano Rosas" <farosas@suse.de>,
	"Mahmoud Mandour" <ma.mandourr@gmail.com>,
	"John Snow" <jsnow@redhat.com>, "Fam Zheng" <fam@euphon.net>,
	"Eugenio Pérez" <eperezma@redhat.com>,
	"Bin Meng" <bin.meng@windriver.com>,
	"Hanna Reitz" <hreitz@redhat.com>,
	"Eric Blake" <eblake@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Stefan Hajnoczi" <stefanha@redhat.com>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Yuval Shaia" <yuval.shaia.ml@gmail.com>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Jesper Devantier" <foss@defmacro.it>,
	"Pierrick Bouvier" <pierrick.bouvier@linaro.org>,
	"Keith Busch" <kbusch@kernel.org>,
	"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
	"Alexandre Iooss" <erdnaxe@crans.org>,
	"Peter Xu" <peterx@redhat.com>
Subject: Re: [PATCH 17/19] hw/nvme: fix -Werror=maybe-uninitialized
Date: Tue, 2 Apr 2024 12:40:12 +0200	[thread overview]
Message-ID: <ZgvgjEnKiEAEYB0N@cormorant.local> (raw)
In-Reply-To: <20240328102052.3499331-18-marcandre.lureau@redhat.com>

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On Mar 28 14:20, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> ../hw/nvme/ctrl.c:6081:21: error: ‘result’ may be used uninitialized [-Werror=maybe-uninitialized]
> 
> It's not obvious that 'result' is set in all code paths. When &result is
> a returned argument, it's even less clear.
> 
> Looking at various assignments, 0 seems to be a suitable default value.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  hw/nvme/ctrl.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
> index c2b17de987..127c3d2383 100644
> --- a/hw/nvme/ctrl.c
> +++ b/hw/nvme/ctrl.c
> @@ -5894,7 +5894,7 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeRequest *req)
>      uint32_t dw10 = le32_to_cpu(cmd->cdw10);
>      uint32_t dw11 = le32_to_cpu(cmd->cdw11);
>      uint32_t nsid = le32_to_cpu(cmd->nsid);
> -    uint32_t result;
> +    uint32_t result = 0;
>      uint8_t fid = NVME_GETSETFEAT_FID(dw10);
>      NvmeGetFeatureSelect sel = NVME_GETFEAT_SELECT(dw10);
>      uint16_t iv;
> -- 
> 2.44.0
> 

Thanks!

Reviewed-by: Klaus Jensen <k.jensen@samsung.com>

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  reply	other threads:[~2024-04-02 10:41 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-28 10:20 [PATCH 00/19] -Werror=maybe-uninitialized fixes marcandre.lureau
2024-03-28 10:20 ` [PATCH 01/19] util/coroutine: fix -Werror=maybe-uninitialized false-positive marcandre.lureau
2024-04-02 20:17   ` Stefan Hajnoczi
2024-03-28 10:20 ` [PATCH 02/19] util/timer: with " marcandre.lureau
2024-03-28 10:20 ` [PATCH 03/19] hw/qxl: fix -Werror=maybe-uninitialized false-positives marcandre.lureau
2024-03-28 10:20 ` [PATCH 04/19] nbd: with -Werror=maybe-uninitialized false-positive marcandre.lureau
2024-03-28 14:30   ` Eric Blake
2024-03-28 10:20 ` [PATCH 05/19] block/mirror: fix " marcandre.lureau
2024-03-29  8:22   ` Vladimir Sementsov-Ogievskiy
2024-03-28 10:20 ` [PATCH 06/19] block/stream: fix -Werror=maybe-uninitialized false-positives marcandre.lureau
2024-03-29  8:34   ` Vladimir Sementsov-Ogievskiy
2024-04-02  9:12     ` Marc-André Lureau
2024-04-02  9:58       ` Vladimir Sementsov-Ogievskiy
2024-04-02 15:34         ` Eric Blake
2024-04-02 19:24           ` Vladimir Sementsov-Ogievskiy
2024-04-03  8:11             ` Marc-André Lureau
2024-04-03  8:31               ` Vladimir Sementsov-Ogievskiy
2024-04-03  9:24                 ` Marc-André Lureau
2024-04-03 17:50                   ` Eric Blake
2024-04-03 21:28                     ` Vladimir Sementsov-Ogievskiy
2024-03-28 10:20 ` [PATCH 07/19] hw/ahci: fix -Werror=maybe-uninitialized false-positive marcandre.lureau
2024-03-28 10:20 ` [PATCH 08/19] hw/vhost-scsi: fix -Werror=maybe-uninitialized marcandre.lureau
2024-03-28 10:20 ` [PATCH 09/19] hw/sdhci: fix -Werror=maybe-uninitialized false-positive marcandre.lureau
2024-03-28 11:30   ` Philippe Mathieu-Daudé
2024-04-02  9:21     ` Marc-André Lureau
2024-03-28 10:20 ` [PATCH 10/19] hw/rdma: " marcandre.lureau
2024-03-28 10:20 ` [PATCH 11/19] migration/block: " marcandre.lureau
2024-03-28 19:40   ` Peter Xu
2024-03-28 10:20 ` [PATCH 12/19] migration: fix -Werror=maybe-uninitialized false-positives marcandre.lureau
2024-03-28 19:40   ` Peter Xu
2024-03-29  1:14   ` Yong Huang
2024-03-28 10:20 ` [PATCH 13/19] hw/virtio-blk: fix -Werror=maybe-uninitialized false-positive marcandre.lureau
2024-04-02 20:18   ` Stefan Hajnoczi
2024-03-28 10:20 ` [PATCH 14/19] plugins: " marcandre.lureau
2024-03-28 10:35   ` Pierrick Bouvier
2024-03-28 10:20 ` [PATCH 15/19] migration: " marcandre.lureau
2024-03-28 19:40   ` Peter Xu
2024-03-28 10:20 ` [PATCH 16/19] tests: fix -Werror=maybe-uninitialized marcandre.lureau
2024-03-28 10:20 ` [PATCH 17/19] hw/nvme: " marcandre.lureau
2024-04-02 10:40   ` Klaus Jensen [this message]
2024-03-28 10:20 ` [PATCH 18/19] hw/virtio: " marcandre.lureau
2024-03-28 10:20 ` [PATCH 19/19] RFC: hw/virtio: a potential leak fix marcandre.lureau
2024-03-28 14:31 ` [PATCH 00/19] -Werror=maybe-uninitialized fixes Eric Blake

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