From: Andy Shevchenko <andy@kernel•org>
To: Christophe JAILLET <christophe.jaillet@wanadoo•fr>
Cc: "Philipp Stanner" <pstanner@redhat•com>,
"onathan Corbet" <corbet@lwn•net>, "Jens Axboe" <axboe@kernel•dk>,
"Wu Hao" <hao.wu@intel•com>, "Tom Rix" <trix@redhat•com>,
"Moritz Fischer" <mdf@kernel•org>,
"Xu Yilun" <yilun.xu@intel•com>,
"Linus Walleij" <linus.walleij@linaro•org>,
"Bartosz Golaszewski" <brgl@bgdev•pl>,
"David S. Miller" <davem@davemloft•net>,
"Eric Dumazet" <edumazet@google•com>,
"Jakub Kicinski" <kuba@kernel•org>,
"Paolo Abeni" <pabeni@redhat•com>,
"Alexandre Torgue" <alexandre.torgue@foss•st.com>,
"Jose Abreu" <joabreu@synopsys•com>,
"Maxime Coquelin" <mcoquelin.stm32@gmail•com>,
"Bjorn Helgaas" <bhelgaas@google•com>,
"Alvaro Karsz" <alvaro.karsz@solid-run•com>,
"Michael S. Tsirkin" <mst@redhat•com>,
"Jason Wang" <jasowang@redhat•com>,
"Xuan Zhuo" <xuanzhuo@linux•alibaba.com>,
"Eugenio Pérez" <eperezma@redhat•com>,
"Richard Cochran" <richardcochran@gmail•com>,
"Mark Brown" <broonie@kernel•org>,
linux-doc@vger•kernel.org, linux-kernel@vger•kernel.org,
linux-block@vger•kernel.org, linux-fpga@vger•kernel.org,
linux-gpio@vger•kernel.org, netdev@vger•kernel.org,
linux-stm32@st-md-mailman•stormreply.com,
linux-arm-kernel@lists•infradead.org, linux-pci@vger•kernel.org,
virtualization@lists•linux.dev
Subject: Re: [PATCH 8/9] vdap: solidrun: Replace deprecated PCI functions
Date: Mon, 19 Aug 2024 21:34:37 +0300 [thread overview]
Message-ID: <ZsOQPbVGQFtUYSww@smile.fi.intel.com> (raw)
In-Reply-To: <74e9109a-ac59-49e2-9b1d-d825c9c9f891@wanadoo.fr>
On Mon, Aug 19, 2024 at 08:19:28PM +0200, Christophe JAILLET wrote:
> Le 19/08/2024 à 18:51, Philipp Stanner a écrit :
...
> Unrelated to the patch, but is is safe to have 'name' be on the stack?
>
> pcim_iomap_region()
> --> __pcim_request_region()
> --> __pcim_request_region_range()
> --> request_region() or __request_mem_region()
> --> __request_region()
> --> __request_region_locked()
> --> res->name = name;
>
> So an address on the stack ends in the 'name' field of a "struct resource".
>
> According to a few grep, it looks really unusual.
>
> I don't know if it is used, but it looks strange to me.
It might be used when printing /proc/iomem, but I don't remember by heart.
> If it is an issue, it was apparently already there before this patch.
This series seems to reveal a lot of issues with the probe/remove in many
drivers. I think it's better to make fixes of them before this series for
the sake of easier backporting.
If here is a problem, the devm_kasprintf() should be used.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2024-08-19 18:34 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-19 16:51 [PATCH 0/9] PCI: Remove pcim_iounmap_regions() Philipp Stanner
2024-08-19 16:51 ` [PATCH 1/9] PCI: Make pcim_release_region() a public function Philipp Stanner
2024-08-19 23:07 ` Damien Le Moal
2024-08-19 16:51 ` [PATCH 2/9] PCI: Make pcim_iounmap_region() " Philipp Stanner
2024-08-19 23:08 ` Damien Le Moal
2024-08-19 16:51 ` [PATCH 3/9] fpga/dfl-pci.c: Replace deprecated PCI functions Philipp Stanner
2024-08-19 16:51 ` [PATCH 4/9] block: mtip32xx: " Philipp Stanner
2024-08-19 18:04 ` Andy Shevchenko
2024-08-20 7:29 ` Philipp Stanner
2024-08-20 10:28 ` Andy Shevchenko
2024-08-20 7:22 ` Philipp Stanner
2024-08-19 16:51 ` [PATCH 5/9] gpio: " Philipp Stanner
2024-08-19 18:22 ` Andy Shevchenko
2024-08-19 18:39 ` Bartosz Golaszewski
2024-08-19 16:51 ` [PATCH 6/9] ethernet: cavium: " Philipp Stanner
2024-08-19 18:23 ` Andy Shevchenko
2024-08-20 7:40 ` Philipp Stanner
2024-08-20 10:32 ` Andy Shevchenko
2024-08-19 16:51 ` [PATCH 7/9] ethernet: stmicro: Simplify PCI devres usage Philipp Stanner
2024-08-19 18:28 ` Andy Shevchenko
2024-08-20 7:52 ` Philipp Stanner
2024-08-20 10:37 ` Andy Shevchenko
2024-08-20 10:53 ` Philipp Stanner
2024-08-19 16:51 ` [PATCH 8/9] vdap: solidrun: Replace deprecated PCI functions Philipp Stanner
2024-08-19 18:19 ` Christophe JAILLET
2024-08-19 18:34 ` Andy Shevchenko [this message]
2024-08-20 8:13 ` Philipp Stanner
2024-08-20 10:35 ` Andy Shevchenko
2024-08-20 8:09 ` Philipp Stanner
2024-08-20 10:50 ` Christophe JAILLET
2024-08-20 11:14 ` Philipp Stanner
2024-08-19 18:31 ` Andy Shevchenko
2024-08-19 18:36 ` Andy Shevchenko
2024-08-19 16:51 ` [PATCH 9/9] PCI: Remove pcim_iounmap_regions() Philipp Stanner
2024-08-19 18:35 ` Andy Shevchenko
2024-08-19 23:08 ` Damien Le Moal
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