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linux-next/drivers/pci
Gustavo A. R. Silva 46feb6b495 switchtec: Fix Spectre v1 vulnerability
p.port can is indirectly controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability.

This issue was detected with the help of Smatch:

  drivers/pci/switch/switchtec.c:912 ioctl_port_to_pff() warn: potential spectre issue 'pcfg->dsp_pff_inst_id' [r]

Fix this by sanitizing p.port before using it to index
pcfg->dsp_pff_inst_id

Notice that given that speculation windows are large, the policy is to kill
the speculation on the first load and not worry if it can be completed with
a dependent load/store [1].

[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Logan Gunthorpe <logang@deltatee.com>
Cc: stable@vger.kernel.org
2018-09-11 08:47:40 -05:00
..
controller pci-v4.19-changes 2018-08-16 09:21:54 -07:00
endpoint Merge branch 'remotes/lorenzo/pci/dwc' 2018-08-15 14:59:11 -05:00
hotplug Merge branch 'pci/virtualization' 2018-08-15 14:59:06 -05:00
pcie Merge branch 'pci/virtualization' 2018-08-15 14:59:06 -05:00
switch switchtec: Fix Spectre v1 vulnerability 2018-09-11 08:47:40 -05:00
access.c Merge branch 'pci/vpd' 2018-04-04 13:28:40 -05:00
ats.c PCI: Enable PASID only if entire path supports End-End TLP prefixes 2018-06-30 14:10:03 -05:00
bus.c PCI: Fix is_added/is_busmaster race condition 2018-07-31 11:27:54 -05:00
ecam.c PCI: Add SPDX GPL-2.0 to replace GPL v2 boilerplate 2018-01-28 15:48:29 -06:00
host-bridge.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00
iov.c Merge branch 'pci/virtualization' 2018-08-15 14:59:06 -05:00
irq.c PCI: Use IRQF_ONESHOT if pci_request_irq() called with no handler 2018-07-31 10:43:43 -05:00
Kconfig PCI: Collect all native drivers under drivers/pci/controller/ 2018-06-08 07:50:11 -05:00
Makefile PCI: Initialize endpoint library before controllers 2018-06-26 15:37:37 -05:00
mmap.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00
msi.c PCI/MSI: Set IRQCHIP_ONESHOT_SAFE for PCI-MSI irqchips 2018-08-14 16:11:02 -05:00
of.c Merge branch 'pci/resource' 2018-08-15 14:59:01 -05:00
pci-acpi.c More power management updates for 4.19-rc1 2018-08-22 07:42:36 -07:00
pci-driver.c Merge branch 'pci/misc' 2018-08-15 14:58:54 -05:00
pci-label.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00
pci-mid.c PCI: Add SPDX GPL-2.0 to replace GPL v2 boilerplate 2018-01-28 15:48:29 -06:00
pci-pf-stub.c PCI/IOV: Add pci-pf-stub driver for PFs that only enable VFs 2018-04-24 16:47:16 -05:00
pci-stub.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00
pci-sysfs.c Merge branch 'pci/hotplug' 2018-08-15 14:58:52 -05:00
pci.c pci-v4.19-changes 2018-08-16 09:21:54 -07:00
pci.h Merge branch 'pci/virtualization' 2018-08-15 14:59:06 -05:00
probe.c Merge branch 'pci/virtualization' 2018-08-15 14:59:06 -05:00
proc.c proc: introduce proc_create_seq{,_data} 2018-05-16 07:23:35 +02:00
quirks.c Revert "PCI: Add ACS quirk for Intel 300 series" 2018-09-11 08:47:38 -05:00
remove.c Merge branch 'pci/aspm' 2018-08-15 14:58:46 -05:00
rom.c PCI: Make pci_get_rom_size() static 2018-06-29 21:17:26 -05:00
search.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00
setup-bus.c PCI: Move resource distribution for single bridge outside loop 2018-06-04 12:08:06 -05:00
setup-irq.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00
setup-res.c PCI: Remove messages about reassigning resources 2018-04-11 08:46:50 -05:00
slot.c Merge branch 'pci/misc' 2018-04-04 13:27:45 -05:00
syscall.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00
vc.c Merge branch 'pci/spdx' into next 2018-02-01 11:40:07 -06:00
vpd.c PCI/VPD: Check for VPD access completion before checking for timeout 2018-08-14 16:04:46 -05:00
xen-pcifront.c PCI: Tidy comments 2018-03-19 14:20:43 -05:00