linux-kernel - [PATCH 8/8] PCI: fix wrong assumption in pci_common

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 28 Jan 2009 20:59:50 +0900
From:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
To:	linux-pci@...r.kernel.org, "Barnes, Jesse" <jesse.barnes@...el.com>
CC:	James Bottomley <James.Bottomley@...senPartnership.com>,
	Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	shaohua.li@...el.com, Grant Grundler <grundler@...isc-linux.org>
Subject: [PATCH 8/8] PCI: fix wrong assumption in pci_common_swizzle

Current pci_common_swizzle() seems to have a assumption that
pci_bus->self is NULL on the pci root bus. But it might not be true on
some platforms. Because of this wrong assumption, pci_common_swizzle()
might cause endless loop. We must check pci_bus->parent instead.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>

---
 drivers/pci/pci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.29-rc2/drivers/pci/pci.c
===================================================================
--- linux-2.6.29-rc2.orig/drivers/pci/pci.c
+++ linux-2.6.29-rc2/drivers/pci/pci.c
@@ -1453,7 +1453,7 @@ u8 pci_common_swizzle(struct pci_dev *de
 {
 	u8 pin = *pinp;
 
-	while (dev->bus->self) {
+	while (dev->bus->parent) {
 		pin = pci_swizzle_interrupt_pin(dev, pin);
 		dev = dev->bus->self;
 	}

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/