linux-kernel - Re: [PATCH v4] PCI: dwc: keystone: Fix NULL pointer dereference in case of DT error in ks_pcie_setup_rc_app

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Date: Sat, 18 May 2024 02:13:55 +0900
From: Krzysztof Wilczyński <kw@...ux.com>
To: Aleksandr Mishin <amishin@...rgos.ru>
Cc: Rob Herring <robh@...nel.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	Serge Semin <fancer.lancer@...il.com>,
	Niklas Cassel <cassel@...nel.org>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Damien Le Moal <dlemoal@...nel.org>,
	Siddharth Vadapalli <s-vadapalli@...com>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org,
	Bjorn Helgaas <helgaas@...nel.org>
Subject: Re: [PATCH v4] PCI: dwc: keystone: Fix NULL pointer dereference in
 case of DT error in ks_pcie_setup_rc_app_regs()

Hello,

> If IORESOURCE_MEM is not provided in Device Tree due to any error,
> resource_list_first_type() will return NULL and
> pci_parse_request_of_pci_ranges() will just emit a warning.
> This will cause a NULL pointer dereference.
> Fix this bug by adding NULL return check.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.

Applied to controller/dwc, thank you!

[1/1] PCI: dwc: keystone: Fix NULL pointer dereference in case of DT error in ks_pcie_setup_rc_app_regs()
      https://git.kernel.org/pci/pci/c/b1d4d63d52a7

	Krzysztof