acpi_nfit_query_poison() is awkward in that it requires an nfit_spa
argument in order to determine what max_ars value to use. Instead probe
for the minimum max_ars across all scrub-capable ranges in the system
and drop the nfit_spa argument.
This enables a larger rework / simplification of the ARS state machine
whereby the status can be retrieved once and then iterated over all
address ranges to reap completions.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Scan the devicetree for an nvdimm-bus compatible and create
a platform device for them.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Add device-tree binding documentation for the nvdimm region driver.
Cc: devicetree@vger.kernel.org
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This patch adds peliminary device-tree bindings for persistent memory
regions. The driver registers a libnvdimm bus for each pmem-region
node and each address range under the node is converted to a region
within that bus.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
We want to be able to cross reference the region and bus devices
with the device tree node that they were spawned from. libNVDIMM
handles creating the actual devices for these internally, so we
need to pass in a pointer to the relevant node in the descriptor.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The message about constraining number of online cpus to be less than or
equal to ND_MAX_LANES (256) is only useful for block-aperture
configurations and BTT. Make it debug since it is only relevant when
debugging performance.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The commit 02a5d6925c ("ALSA: pcm: Avoid potential races between OSS
ioctls and read/write") split the PCM preparation code to a locked
version, and it added a sanity check of runtime->oss.prepare flag
along with the change. This leaded to an endless loop when the stream
gets XRUN: namely, snd_pcm_oss_write3() and co call
snd_pcm_oss_prepare() without setting runtime->oss.prepare flag and
the loop continues until the PCM state reaches to another one.
As the function is supposed to execute the preparation
unconditionally, drop the invalid state check there.
The bug was triggered by syzkaller.
Fixes: 02a5d6925c ("ALSA: pcm: Avoid potential races between OSS ioctls and read/write")
Reported-by: syzbot+150189c103427d31a053@syzkaller.appspotmail.com
Reported-by: syzbot+7e3f31a52646f939c052@syzkaller.appspotmail.com
Reported-by: syzbot+4f2016cf5185da7759dc@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The UAC3 clock parser codes lack of the sanity checks for malformed
descriptors like UAC2 parser does. Without it, the driver may lead to
a potential crash.
Fixes: 9a2fe9b801 ("ALSA: usb: initial USB Audio Device Class 3.0 support")
Tested-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Reviewed-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The sanity checks introduced for malformed descriptors loosely check
the given descriptor size, although the size greater than the defined
description is invalid. It was due to a concern of any funky firmware
in the actual products. But this doesn't look hitting, and any sane
products must have the defined descriptors.
So in this patch, we make the validators more strict, allowing only
with the defined descriptor sizes. The value in clock selector
validator is corrected from 5 to 7 to count the two unlisted fields
after baCSourceID[].
Suggested-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Reviewed-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
There are lots of open-coded functions to find a clock source,
selector and multiplier. Now there are both v2 and v3, so six
variants.
This patch refactors the code to use a common helper for the main
loop, and define each validator function for each target.
There is no functional change.
Fixes: 9a2fe9b801 ("ALSA: usb: initial USB Audio Device Class 3.0 support")
Reviewed-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The following NULL dereference results from incorrectly assuming that
ndd is valid in this print:
struct nvdimm_drvdata *ndd = to_ndd(&nd_region->mapping[i]);
/*
* Give up if we don't find an instance of a uuid at each
* position (from 0 to nd_region->ndr_mappings - 1), or if we
* find a dimm with two instances of the same uuid.
*/
dev_err(&nd_region->dev, "%s missing label for %pUb\n",
dev_name(ndd->dev), nd_label->uuid);
BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
IP: nd_region_register_namespaces+0xd67/0x13c0 [libnvdimm]
PGD 0 P4D 0
Oops: 0000 [#1] SMP PTI
CPU: 43 PID: 673 Comm: kworker/u609:10 Not tainted 4.16.0-rc4+ #1
[..]
RIP: 0010:nd_region_register_namespaces+0xd67/0x13c0 [libnvdimm]
[..]
Call Trace:
? devres_add+0x2f/0x40
? devm_kmalloc+0x52/0x60
? nd_region_activate+0x9c/0x320 [libnvdimm]
nd_region_probe+0x94/0x260 [libnvdimm]
? kernfs_add_one+0xe4/0x130
nvdimm_bus_probe+0x63/0x100 [libnvdimm]
Switch to using the nvdimm device directly.
Fixes: 0e3b0d123c ("libnvdimm, namespace: allow multiple pmem...")
Cc: <stable@vger.kernel.org>
Reported-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
At initialization time the 'dimm' driver caches a copy of the memory
device's label area and reserves address space for each of the
namespaces defined.
However, as can be seen below, the reservation occurs even when the
index blocks are invalid:
nvdimm nmem0: nvdimm_init_config_data: len: 131072 rc: 0
nvdimm nmem0: config data size: 131072
nvdimm nmem0: __nd_label_validate: nsindex0 labelsize 1 invalid
nvdimm nmem0: __nd_label_validate: nsindex1 labelsize 1 invalid
nvdimm nmem0: : pmem-6025e505: 0x1000000000 @ 0xf50000000 reserve <-- bad
Gate dpa reservation on the presence of valid index blocks.
Cc: <stable@vger.kernel.org>
Fixes: 4a826c83db ("libnvdimm: namespace indices: read and validate")
Reported-by: Krzysztof Rusocki <krzysztof.rusocki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This cleans up the qemu fw cfg device driver.
On top of this, vmcore is dumped there on crash to
help debugging witH kASLR enabled.
Also included are some fixes in vhost.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull fw_cfg, vhost updates from Michael Tsirkin:
"This cleans up the qemu fw cfg device driver.
On top of this, vmcore is dumped there on crash to help debugging
with kASLR enabled.
Also included are some fixes in vhost"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vhost: add vsock compat ioctl
vhost: fix vhost ioctl signature to build with clang
fw_cfg: write vmcoreinfo details
crash: export paddr_vmcoreinfo_note()
fw_cfg: add DMA register
fw_cfg: add a public uapi header
fw_cfg: handle fw_cfg_read_blob() error
fw_cfg: remove inline from fw_cfg_read_blob()
fw_cfg: fix sparse warnings around FW_CFG_FILE_DIR read
fw_cfg: fix sparse warning reading FW_CFG_ID
fw_cfg: fix sparse warnings with fw_cfg_file
fw_cfg: fix sparse warnings in fw_cfg_sel_endianness()
ptr_ring: fix build
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Merge tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- move pci_uevent_ers() out of pci.h (Michael Ellerman)
- skip ASPM common clock warning if BIOS already configured it (Sinan
Kaya)
- fix ASPM Coverity warning about threshold_ns (Gustavo A. R. Silva)
- remove last user of pci_get_bus_and_slot() and the function itself
(Sinan Kaya)
- add decoding for 16 GT/s link speed (Jay Fang)
- add interfaces to get max link speed and width (Tal Gilboa)
- add pcie_bandwidth_capable() to compute max supported link bandwidth
(Tal Gilboa)
- add pcie_bandwidth_available() to compute bandwidth available to
device (Tal Gilboa)
- add pcie_print_link_status() to log link speed and whether it's
limited (Tal Gilboa)
- use PCI core interfaces to report when device performance may be
limited by its slot instead of doing it in each driver (Tal Gilboa)
- fix possible cpqphp NULL pointer dereference (Shawn Lin)
- rescan more of the hierarchy on ACPI hotplug to fix Thunderbolt/xHCI
hotplug (Mika Westerberg)
- add support for PCI I/O port space that's neither directly accessible
via CPU in/out instructions nor directly mapped into CPU physical
memory space. This is fairly intrusive and includes minor changes to
interfaces used for I/O space on most platforms (Zhichang Yuan, John
Garry)
- add support for HiSilicon Hip06/Hip07 LPC I/O space (Zhichang Yuan,
John Garry)
- use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas)
- remove possible NULL pointer dereference in of_pci_bus_find_domain_nr()
(Shawn Lin)
- report quirk timings with dev_info (Bjorn Helgaas)
- report quirks that take longer than 10ms (Bjorn Helgaas)
- add and use Altera Vendor ID (Johannes Thumshirn)
- tidy Makefiles and comments (Bjorn Helgaas)
- don't set up INTx if MSI or MSI-X is enabled to align cris, frv,
ia64, and mn10300 with x86 (Bjorn Helgaas)
- move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick
Lawler)
- merge pcieport_if.h into portdrv.h (Bjorn Helgaas)
- move workaround for BIOS PME issue from portdrv to PCI core (Bjorn
Helgaas)
- completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas)
- remove portdrv link order dependency (Bjorn Helgaas)
- remove support for unused VC portdrv service (Bjorn Helgaas)
- simplify portdrv feature permission checking (Bjorn Helgaas)
- remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn
Helgaas)
- remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas)
- use cached AER capability offset (Frederick Lawler)
- don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg)
- rename pcie-dpc.c to dpc.c (Bjorn Helgaas)
- use generic pci_mmap_resource_range() instead of powerpc and xtensa
arch-specific versions (David Woodhouse)
- support arbitrary PCI host bridge offsets on sparc (Yinghai Lu)
- remove System and Video ROM reservations on sparc (Bjorn Helgaas)
- probe for device reset support during enumeration instead of runtime
(Bjorn Helgaas)
- add ACS quirk for Ampere (née APM) root ports (Feng Kan)
- add function 1 DMA alias quirk for Marvell 88SE9220 (Thomas
Vincent-Cross)
- protect device restore with device lock (Sinan Kaya)
- handle failure of FLR gracefully (Sinan Kaya)
- handle CRS (config retry status) after device resets (Sinan Kaya)
- skip various config reads for SR-IOV VFs as an optimization
(KarimAllah Ahmed)
- consolidate VPD code in vpd.c (Bjorn Helgaas)
- add Tegra dependency on PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)
- add DT support for R-Car r8a7743 (Biju Das)
- fix a PCI_EJECT vs PCI_BUS_RELATIONS race condition in Hyper-V host
bridge driver that causes a general protection fault (Dexuan Cui)
- fix Hyper-V host bridge hang in MSI setup on 1-vCPU VMs with SR-IOV
(Dexuan Cui)
- fix Hyper-V host bridge hang when ejecting a VF before setting up MSI
(Dexuan Cui)
- make several structures static (Fengguang Wu)
- increase number of MSI IRQs supported by Synopsys DesignWare bridges
from 32 to 256 (Gustavo Pimentel)
- implemented multiplexed IRQ domain API and remove obsolete MSI IRQ
API from DesignWare drivers (Gustavo Pimentel)
- add Tegra power management support (Manikanta Maddireddy)
- add Tegra loadable module support (Manikanta Maddireddy)
- handle 64-bit BARs correctly in endpoint support (Niklas Cassel)
- support optional regulator for HiSilicon STB (Shawn Guo)
- use regulator bulk API for Qualcomm apq8064 (Srinivas Kandagatla)
- support power supplies for Qualcomm msm8996 (Srinivas Kandagatla)
* tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (123 commits)
MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver
HISI LPC: Add ACPI support
ACPI / scan: Do not enumerate Indirect IO host children
ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use
HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings
of: Add missing I/O range exception for indirect-IO devices
PCI: Apply the new generic I/O management on PCI IO hosts
PCI: Add fwnode handler as input param of pci_register_io_range()
PCI: Remove __weak tag from pci_register_io_range()
MAINTAINERS: Add missing /drivers/pci/cadence directory entry
fm10k: Report PCIe link properties with pcie_print_link_status()
net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth
net/mlx5: Report PCIe link properties with pcie_print_link_status()
net/mlx4_core: Report PCIe link properties with pcie_print_link_status()
PCI: Add pcie_print_link_status() to log link speed and whether it's limited
PCI: Add pcie_bandwidth_available() to compute bandwidth available to device
misc: pci_endpoint_test: Handle 64-bit BARs properly
PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly
PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing
PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar
...
- Fix RDMA uapi headers to actually compile in userspace and be more
complete
- Three shared with netdev pull requests from Mellanox:
* 7 patches, mostly to net with 1 IB related one at the back). This
series addresses an IRQ performance issue (patch 1), cleanups related to
the fix for the IRQ performance problem (patches 2-6), and then extends
the fragmented completion queue support that already exists in the net
side of the driver to the ib side of the driver (patch 7).
* Mostly IB, with 5 patches to net that are needed to support the remaining
10 patches to the IB subsystem. This series extends the current
'representor' framework when the mlx5 driver is in switchdev mode from
being a netdev only construct to being a netdev/IB dev construct. The IB
dev is limited to raw Eth queue pairs only, but by having an IB dev of
this type attached to the representor for a switchdev port, it enables
DPDK to work on the switchdev device.
* All net related, but needed as infrastructure for the rdma driver
- Updates for the hns, i40iw, bnxt_re, cxgb3, cxgb4, hns drivers
- SRP performance updates
- IB uverbs write path cleanup patch series from Leon
- Add RDMA_CM support to ib_srpt. This is disabled by default. Users need to
set the port for ib_srpt to listen on in configfs in order for it to be
enabled (/sys/kernel/config/target/srpt/discovery_auth/rdma_cm_port)
- TSO and Scatter FCS support in mlx4
- Refactor of modify_qp routine to resolve problems seen while working on new
code that is forthcoming
- More refactoring and updates of RDMA CM for containers support from Parav
- mlx5 'fine grained packet pacing', 'ipsec offload' and 'device memory'
user API features
- Infrastructure updates for the new IOCTL interface, based on increased usage
- ABI compatibility bug fixes to fully support 32 bit userspace on 64 bit
kernel as was originally intended. See the commit messages for
extensive details
- Syzkaller bugs and code cleanups motivated by them
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Merge tag 'for-linus-unmerged' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"Doug and I are at a conference next week so if another PR is sent I
expect it to only be bug fixes. Parav noted yesterday that there are
some fringe case behavior changes in his work that he would like to
fix, and I see that Intel has a number of rc looking patches for HFI1
they posted yesterday.
Parav is again the biggest contributor by patch count with his ongoing
work to enable container support in the RDMA stack, followed by Leon
doing syzkaller inspired cleanups, though most of the actual fixing
went to RC.
There is one uncomfortable series here fixing the user ABI to actually
work as intended in 32 bit mode. There are lots of notes in the commit
messages, but the basic summary is we don't think there is an actual
32 bit kernel user of drivers/infiniband for several good reasons.
However we are seeing people want to use a 32 bit user space with 64
bit kernel, which didn't completely work today. So in fixing it we
required a 32 bit rxe user to upgrade their userspace. rxe users are
still already quite rare and we think a 32 bit one is non-existing.
- Fix RDMA uapi headers to actually compile in userspace and be more
complete
- Three shared with netdev pull requests from Mellanox:
* 7 patches, mostly to net with 1 IB related one at the back).
This series addresses an IRQ performance issue (patch 1),
cleanups related to the fix for the IRQ performance problem
(patches 2-6), and then extends the fragmented completion queue
support that already exists in the net side of the driver to the
ib side of the driver (patch 7).
* Mostly IB, with 5 patches to net that are needed to support the
remaining 10 patches to the IB subsystem. This series extends
the current 'representor' framework when the mlx5 driver is in
switchdev mode from being a netdev only construct to being a
netdev/IB dev construct. The IB dev is limited to raw Eth queue
pairs only, but by having an IB dev of this type attached to the
representor for a switchdev port, it enables DPDK to work on the
switchdev device.
* All net related, but needed as infrastructure for the rdma
driver
- Updates for the hns, i40iw, bnxt_re, cxgb3, cxgb4, hns drivers
- SRP performance updates
- IB uverbs write path cleanup patch series from Leon
- Add RDMA_CM support to ib_srpt. This is disabled by default. Users
need to set the port for ib_srpt to listen on in configfs in order
for it to be enabled
(/sys/kernel/config/target/srpt/discovery_auth/rdma_cm_port)
- TSO and Scatter FCS support in mlx4
- Refactor of modify_qp routine to resolve problems seen while
working on new code that is forthcoming
- More refactoring and updates of RDMA CM for containers support from
Parav
- mlx5 'fine grained packet pacing', 'ipsec offload' and 'device
memory' user API features
- Infrastructure updates for the new IOCTL interface, based on
increased usage
- ABI compatibility bug fixes to fully support 32 bit userspace on 64
bit kernel as was originally intended. See the commit messages for
extensive details
- Syzkaller bugs and code cleanups motivated by them"
* tag 'for-linus-unmerged' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (199 commits)
IB/rxe: Fix for oops in rxe_register_device on ppc64le arch
IB/mlx5: Device memory mr registration support
net/mlx5: Mkey creation command adjustments
IB/mlx5: Device memory support in mlx5_ib
net/mlx5: Query device memory capabilities
IB/uverbs: Add device memory registration ioctl support
IB/uverbs: Add alloc/free dm uverbs ioctl support
IB/uverbs: Add device memory capabilities reporting
IB/uverbs: Expose device memory capabilities to user
RDMA/qedr: Fix wmb usage in qedr
IB/rxe: Removed GID add/del dummy routines
RDMA/qedr: Zero stack memory before copying to user space
IB/mlx5: Add ability to hash by IPSEC_SPI when creating a TIR
IB/mlx5: Add information for querying IPsec capabilities
IB/mlx5: Add IPsec support for egress and ingress
{net,IB}/mlx5: Add ipsec helper
IB/mlx5: Add modify_flow_action_esp verb
IB/mlx5: Add implementation for create and destroy action_xfrm
IB/uverbs: Introduce ESP steering match filter
IB/uverbs: Add modify ESP flow_action
...
MAINTAINERS is out of date for leaking_addresses.pl. There is now a tree on
kernel.org for development of this script. We have a second maintainer now,
thanks Tycho. Development of this scripts was started on kernel-hardening
mailing list so let's keep it there.
Update maintainer details; Add mailing list, kernel.org hosted tree, and second
maintainer.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
The original patch submitted for support of the Luxul XWR-1750 used a
non-standard button handler for the reset button. This patch will allow
using the standard KEY_RESTART
Signed-off-by: Dan Haab <dan.haab@luxul.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18981/
Signed-off-by: James Hogan <jhogan@kernel.org>
Sometimes files may be created by using output from printk. As the scan
traverses the directory tree we should parse each path name and check if
it is leaking an address.
Add check for leaking address on each path name.
Suggested-by: Tycho Andersen <tycho@tycho.ws>
Acked-by: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently sub routine may_leak_address() is checking regex against Perl
special variable $_ which is _fortunately_ being set correctly in a loop
before this sub routine is called. We already have declared a variable
to hold this value '$line' we should use it.
Use $line in regex match instead of implicit $_
Signed-off-by: Tobin C. Harding <me@tobin.cc>
We have git now, we don't need a version number. This was originally
added because leaking_addresses.pl shamelessly (and mindlessly) copied
checkpatch.pl
Remove version number from script.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
The pointers listed in /proc/1/syscall are user pointers, and negative
syscall args will show up like kernel addresses.
For example
/proc/31808/syscall: 0 0x3 0x55b107a38180 0x2000 0xffffffffffffffb0 \
0x55b107a302d0 0x55b107a38180 0x7fffa313b8e8 0x7ff098560d11
Skip parsing /proc/1/syscall
Suggested-by: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
When the system is idle it is likely that most files under /proc/PID
will be identical for various processes. Scanning _all_ the PIDs under
/proc is unnecessary and implies that we are thoroughly scanning /proc.
This is _not_ the case because there may be ways userspace can trigger
creation of /proc files that leak addresses but were not present during
a scan. For these two reasons we should exclude all PID directories
under /proc except '1/'
Exclude all /proc/PID except /proc/1.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently we are repeatedly calling `uname -m`. This is causing the
script to take a long time to run (more than 10 seconds to parse
/proc/kallsyms). We can use Perl state variables to cache the result of
the first call to `uname -m`. With this change in place the script
scans the whole kernel in under a minute.
Cache machine architecture in state variable.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently script has multiple configuration arrays. This is confusing,
evident by the fact that a bunch of the entries are in the wrong place.
We can simplify the code by just having a single array for absolute
paths to skip and a single array for file names to skip wherever they
appear in the scanned directory tree. There are also currently multiple
subroutines to handle the different arrays, we can reduce these to a
single subroutine also.
Simplify the path skipping code.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently script parses binary files. Since we are scanning for
readable kernel addresses there is no need to parse binary files. We
can use Perl to check if file is binary and skip parsing it if so.
Do not parse binary files.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently script only supports x86_64 and ppc64. It would be nice to be
able to scan 32-bit machines also. We can add support for 32-bit
architectures by modifying how we check for false positives, taking
advantage of the page offset used by the kernel, and using the correct
regular expression.
Support for 32-bit machines is enabled by the observation that the kernel
addresses on 32-bit machines are larger [in value] than the page offset.
We can use this to filter false positives when scanning the kernel for
leaking addresses.
Programmatic determination of the running architecture is not
immediately obvious (current 32-bit machines return various strings from
`uname -m`). We therefore provide a flag to enable scanning of 32-bit
kernels. Also we can check the kernel config file for the offset and if
not found default to 0xc0000000. A command line option to parse in the
page offset is also provided. We do automatically detect architecture
if running on ix86.
Add support for 32-bit kernels. Add a command line option for page
offset.
Suggested-by: Kaiwan N Billimoria <kaiwan.billimoria@gmail.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently there is duplicate code when checking the architecture type.
We can remove the duplication by implementing a wrapper function
is_arch().
Implement and use wrapper function is_arch().
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently script uses Perl to get the machine architecture. This can be
erroneous since Perl uses the architecture of the machine that Perl was
compiled on not the architecture of the running machine. We should use
the systems `uname` command instead.
Use `uname -m` instead of Perl to get the machine architecture.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently script only supports 4 page table levels because of the way
the kernel address regular expression is crafted. We can do better than
this. Using previously added support for kernel configuration options we
can get the number of page table levels defined by
CONFIG_PGTABLE_LEVELS. Using this value a correct regular expression can
be crafted. This only supports 5 page tables on x86_64.
Add support for 5 page table levels on x86_64.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Features that rely on the ability to get kernel configuration options
are ready to be implemented in script. In preparation for this we can
add support for kernel config options as a separate patch to ease
review.
Add support for locating and parsing kernel configuration file.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently script checks only first and last address in the vsyscall
memory range. We can do better than this. When checking for false
positives against $match, we can convert $match to a hexadecimal value
then check if it lies within the range of vsyscall addresses.
Check whole range of vsyscall addresses when checking for false
positive.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
A number of the command line options to script are dependant on the
option --input-raw being set. If we indent these options it makes
explicit this dependency.
Indent options dependant on --input-raw.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently help output includes command examples. These were cute when we
first started development of this script but are unnecessary.
Remove command examples.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
leaking_addresses.pl can be run with kptr_restrict==0 now, we don't need
the comment about setting kptr_restrict any more.
Remove comment suggesting setting kptr_restrict.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently code uses a check against an undefined variable because the
variable is a sub routine name and is not evaluated.
Evaluate subroutine; add parenthesis to sub routine name.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Commit 58eb5b6707 ("pstore: fix crypto dependencies") fixed up the crypto
dependencies but missed the case when no compression is selected.
With CONFIG_PSTORE=y, CONFIG_PSTORE_COMPRESS=n and CONFIG_CRYPTO=m we see
the following link error:
fs/pstore/platform.o: In function `pstore_register':
(.text+0x1b1): undefined reference to `crypto_has_alg'
(.text+0x205): undefined reference to `crypto_alloc_base'
fs/pstore/platform.o: In function `pstore_unregister':
(.text+0x3b0): undefined reference to `crypto_destroy_tfm'
Fix this by checking at compile-time if CONFIG_PSTORE_COMPRESS is enabled.
Fixes: 58eb5b6707 ("pstore: fix crypto dependencies")
Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
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Merge tag 'selinux-pr-20180403' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux updates from Paul Moore:
"A bigger than usual pull request for SELinux, 13 patches (lucky!)
along with a scary looking diffstat.
Although if you look a bit closer, excluding the usual minor
tweaks/fixes, there are really only two significant changes in this
pull request: the addition of proper SELinux access controls for SCTP
and the encapsulation of a lot of internal SELinux state.
The SCTP changes are the result of a multi-month effort (maybe even a
year or longer?) between the SELinux folks and the SCTP folks to add
proper SELinux controls. A special thanks go to Richard for seeing
this through and keeping the effort moving forward.
The state encapsulation work is a bit of janitorial work that came out
of some early work on SELinux namespacing. The question of namespacing
is still an open one, but I believe there is some real value in the
encapsulation work so we've split that out and are now sending that up
to you"
* tag 'selinux-pr-20180403' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: wrap AVC state
selinux: wrap selinuxfs state
selinux: fix handling of uninitialized selinux state in get_bools/classes
selinux: Update SELinux SCTP documentation
selinux: Fix ltp test connect-syscall failure
selinux: rename the {is,set}_enforcing() functions
selinux: wrap global selinux state
selinux: fix typo in selinux_netlbl_sctp_sk_clone declaration
selinux: Add SCTP support
sctp: Add LSM hooks
sctp: Add ip option support
security: Add support for SCTP security hooks
netlabel: If PF_INET6, check sk_buff ip header version
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Merge tag 'audit-pr-20180403' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"We didn't have anything to send for v4.16, but we're back with a
little more than usual for v4.17.
Eleven patches in total, most fall into the small fix category, but
there are three non-trivial changes worth calling out:
- the audit entry filter is being removed after deprecating it for
quite a while (years of no one really using it because it turns out
to be not very practical)
- created our own version of "__mutex_owner()" because the locking
folks were upset we were using theirs
- improved our handling of kernel command line parameters to make
them more forgiving
- we fixed auditing of symlink operations
Everything passes the audit-testsuite and as of a few minutes ago it
merges well with your tree"
* tag 'audit-pr-20180403' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: add refused symlink to audit_names
audit: remove path param from link denied function
audit: link denied should not directly generate PATH record
audit: make ANOM_LINK obey audit_enabled and audit_dummy_context
audit: do not panic on invalid boot parameter
audit: track the owner of the command mutex ourselves
audit: return on memory error to avoid null pointer dereference
audit: bail before bug check if audit disabled
audit: deprecate the AUDIT_FILTER_ENTRY filter
audit: session ID should not set arch quick field pointer
audit: update bugtracker and source URIs
- Refactor to use crypto compression API (Geliang Tang)
- Fix up Kconfig dependencies for compression (Arnd Bergmann)
- Allow for run-time compression selection
- Remove stack VLA usage
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Merge tag 'pstore-v4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull pstore updates from Kees Cook:
"This cycle was almost entirely improvements to the pstore compression
options, noted below:
- Add lz4hc and 842 to pstore compression options (Geliang Tang)
- Refactor to use crypto compression API (Geliang Tang)
- Fix up Kconfig dependencies for compression (Arnd Bergmann)
- Allow for run-time compression selection
- Remove stack VLA usage"
* tag 'pstore-v4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
pstore: fix crypto dependencies
pstore: Use crypto compress API
pstore/ram: Do not use stack VLA for parity workspace
pstore: Select compression at runtime
pstore: Avoid size casts for 842 compression
pstore: Add lz4hc and 842 compression support
Merge updates from Andrew Morton:
- a few misc things
- ocfs2 updates
- the v9fs maintainers have been missing for a long time. I've taken
over v9fs patch slinging.
- most of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (116 commits)
mm,oom_reaper: check for MMF_OOM_SKIP before complaining
mm/ksm: fix interaction with THP
mm/memblock.c: cast constant ULLONG_MAX to phys_addr_t
headers: untangle kmemleak.h from mm.h
include/linux/mmdebug.h: make VM_WARN* non-rvals
mm/page_isolation.c: make start_isolate_page_range() fail if already isolated
mm: change return type to vm_fault_t
mm, oom: remove 3% bonus for CAP_SYS_ADMIN processes
mm, page_alloc: wakeup kcompactd even if kswapd cannot free more memory
kernel/fork.c: detect early free of a live mm
mm: make counting of list_lru_one::nr_items lockless
mm/swap_state.c: make bool enable_vma_readahead and swap_vma_readahead() static
block_invalidatepage(): only release page if the full page was invalidated
mm: kernel-doc: add missing parameter descriptions
mm/swap.c: remove @cold parameter description for release_pages()
mm/nommu: remove description of alloc_vm_area
zram: drop max_zpage_size and use zs_huge_class_size()
zsmalloc: introduce zs_huge_class_size()
mm: fix races between swapoff and flush dcache
fs/direct-io.c: minor cleanups in do_blockdev_direct_IO
...
Core:
* Remove support for asynchronous erase (not implemented by any of
the existing drivers anyway)
* Remove Cyrille from the list of SPI NOR and MTD maintainers
* Fix kernel doc headers
* Allow users to define the partitions parsers they want to test
through a DT property (compatible of the partitions subnode)
* Remove the bfin-async-flash driver (the only architecture using
it has been removed)
* Fix pagetest test
* Add extra checks in mtd_erase()
* Simplify the MTD partition creation logic and get rid of
mtd_add_device_partitions()
Drivers:
* Add endianness information to the physmap DT binding
* Add Eon EN29LV400A IDs to JEDEC probe logic
* Use %*ph where appropriate
SPI NOR changes:
Drivers:
* Make fsl-quaspi assign different names to MTD devices connected
to the same QSPI controller
* Remove an unneeded driver.bus assigned in the fsl-qspi driver
NAND changes:
Core:
* Prepare arrival of the SPI NAND subsystem by implementing a
generic (interface-agnostic) layer to ease manipulation of NAND
devices
* Move onenand code base to the drivers/mtd/nand/ dir
* Rework timing mode selection
* Provide a generic way for NAND chip drivers to flag a specific
GET/SET FEATURE operation as supported/unsupported
* Stop embedding ONFI/JEDEC param page in nand_chip
Drivers:
* Rework/cleanup of the mxc driver
* Various cleanups in the vf610 driver
* Migrate the fsmc and vf610 to ->exec_op()
* Get rid of the pxa driver (replaced by marvell_nand)
* Support ->setup_data_interface() in the GPMI driver
* Fix probe error path in several drivers
* Remove support for unused hw_syndrome mode in sunxi_nand
* Various minor improvements
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Merge tag 'mtd/for-4.17' of git://git.infradead.org/linux-mtd
Pull MTD updates from Boris Brezillon:
"MTD Core:
- Remove support for asynchronous erase (not implemented by any of
the existing drivers anyway)
- Remove Cyrille from the list of SPI NOR and MTD maintainers
- Fix kernel doc headers
- Allow users to define the partitions parsers they want to test
through a DT property (compatible of the partitions subnode)
- Remove the bfin-async-flash driver (the only architecture using it
has been removed)
- Fix pagetest test
- Add extra checks in mtd_erase()
- Simplify the MTD partition creation logic and get rid of
mtd_add_device_partitions()
MTD Drivers:
- Add endianness information to the physmap DT binding
- Add Eon EN29LV400A IDs to JEDEC probe logic
- Use %*ph where appropriate
SPI NOR Drivers:
- Make fsl-quaspi assign different names to MTD devices connected to
the same QSPI controller
- Remove an unneeded driver.bus assigned in the fsl-qspi driver
NAND Core:
- Prepare arrival of the SPI NAND subsystem by implementing a generic
(interface-agnostic) layer to ease manipulation of NAND devices
- Move onenand code base to the drivers/mtd/nand/ dir
- Rework timing mode selection
- Provide a generic way for NAND chip drivers to flag a specific
GET/SET FEATURE operation as supported/unsupported
- Stop embedding ONFI/JEDEC param page in nand_chip
NAND Drivers:
- Rework/cleanup of the mxc driver
- Various cleanups in the vf610 driver
- Migrate the fsmc and vf610 to ->exec_op()
- Get rid of the pxa driver (replaced by marvell_nand)
- Support ->setup_data_interface() in the GPMI driver
- Fix probe error path in several drivers
- Remove support for unused hw_syndrome mode in sunxi_nand
- Various minor improvements"
* tag 'mtd/for-4.17' of git://git.infradead.org/linux-mtd: (89 commits)
dt-bindings: fsl-quadspi: Add the example of two SPI NOR
mtd: fsl-quadspi: Distinguish the mtd device names
mtd: nand: Fix some function description mismatches in core.c
mtd: fsl-quadspi: Remove unneeded driver.bus assignment
mtd: rawnand: marvell: Rename ->ecc_clk into ->core_clk
mtd: rawnand: s3c2410: enhance the probe function error path
mtd: rawnand: tango: fix probe function error path
mtd: rawnand: sh_flctl: fix the probe function error path
mtd: rawnand: omap2: fix the probe function error path
mtd: rawnand: mxc: fix probe function error path
mtd: rawnand: denali: fix probe function error path
mtd: rawnand: davinci: fix probe function error path
mtd: rawnand: cafe: fix probe function error path
mtd: rawnand: brcmnand: fix probe function error path
mtd: rawnand: sunxi: Stop supporting ECC_HW_SYNDROME mode
mtd: rawnand: marvell: Fix clock resource by adding a register clock
mtd: ftl: Use DIV_ROUND_UP()
mtd: Fix some function description mismatches in mtdcore.c
mtd: physmap_of: update struct map_info's swap as per map requirement
dt-bindings: mtd-physmap: Add endianness supports
...
that table's block devices, while issuing the ioctl to one of those
block devices.
- DM core passthrough ioctl fix to _not_ override the fmode_t used to
issue the ioctl. Overriding by using the fmode_t that the block
device was originally open with during DM table load is a liability.
- Add DM core support for secure erase forwarding and update the DM
linear and DM striped targets to support them.
- A DM core 4.16 stable fix to allow abnormal IO (e.g. discard, write
same, write zeroes) for targets that make use of the non-splitting IO
variant (as is done for multipath or thinp when layered directly on
NVMe).
- Allow DM targets to return a payload in response to a DM message that
they are sent. This is useful for DM targets that would like to
provide statistics data in response to DM messages.
- Update DM bufio to support non-power-of-2 block sizes. Numerous other
related changes prepare the DM bufio code for this support.
- Fix DM crypt to use a bounded amount of memory across the entire
system. This is to avoid OOM that can otherwise occur in response to
certain pathological IO workloads (e.g. discarding a large DM crypt
device).
- Add a 'check_at_most_once' feature to the DM verity target to allow
verity to be used on mobile devices that have very limited resources.
- Fix the DM integrity target to fail early if a keyed algorithm
(e.g. HMAC) is to be used but the key isn't set.
- Add non-power-of-2 support to the DM unstripe target.
- Eliminate the use of a Variable Length Array in the DM stripe target.
- Update the DM log-writes target to record metadata (REQ_META flag).
- DM raid fixes for its nosync status and some variable range issues.
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Merge tag 'for-4.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- DM core passthrough ioctl fix to retain reference to DM table, and
that table's block devices, while issuing the ioctl to one of those
block devices.
- DM core passthrough ioctl fix to _not_ override the fmode_t used to
issue the ioctl. Overriding by using the fmode_t that the block
device was originally open with during DM table load is a liability.
- Add DM core support for secure erase forwarding and update the DM
linear and DM striped targets to support them.
- A DM core 4.16 stable fix to allow abnormal IO (e.g. discard, write
same, write zeroes) for targets that make use of the non-splitting IO
variant (as is done for multipath or thinp when layered directly on
NVMe).
- Allow DM targets to return a payload in response to a DM message that
they are sent. This is useful for DM targets that would like to
provide statistics data in response to DM messages.
- Update DM bufio to support non-power-of-2 block sizes. Numerous other
related changes prepare the DM bufio code for this support.
- Fix DM crypt to use a bounded amount of memory across the entire
system. This is to avoid OOM that can otherwise occur in response to
certain pathological IO workloads (e.g. discarding a large DM crypt
device).
- Add a 'check_at_most_once' feature to the DM verity target to allow
verity to be used on mobile devices that have very limited resources.
- Fix the DM integrity target to fail early if a keyed algorithm (e.g.
HMAC) is to be used but the key isn't set.
- Add non-power-of-2 support to the DM unstripe target.
- Eliminate the use of a Variable Length Array in the DM stripe target.
- Update the DM log-writes target to record metadata (REQ_META flag).
- DM raid fixes for its nosync status and some variable range issues.
* tag 'for-4.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (28 commits)
dm: remove fmode_t argument from .prepare_ioctl hook
dm: hold DM table for duration of ioctl rather than use blkdev_get
dm raid: fix parse_raid_params() variable range issue
dm verity: make verity_for_io_block static
dm verity: add 'check_at_most_once' option to only validate hashes once
dm bufio: don't embed a bio in the dm_buffer structure
dm bufio: support non-power-of-two block sizes
dm bufio: use slab cache for dm_buffer structure allocations
dm bufio: reorder fields in dm_buffer structure
dm bufio: relax alignment constraint on slab cache
dm bufio: remove code that merges slab caches
dm bufio: get rid of slab cache name allocations
dm bufio: move dm-bufio.h to include/linux/
dm bufio: delete outdated comment
dm: add support for secure erase forwarding
dm: backfill abnormal IO support to non-splitting IO submission
dm raid: fix nosync status
dm mpath: use DM_MAPIO_SUBMITTED instead of magic number 0 in process_queued_bios()
dm stripe: get rid of a Variable Length Array (VLA)
dm log writes: record metadata flag for better flags record
...
The LED2[2]/INTn pin on Marvell 88E1318S as well as 88E1510/12/14/18 needs
to be configured to be usable as interrupt not only when WOL is enabled,
but whenever we rely on interrupts from the PHY.
Signed-off-by: Esben Haabendal <eha@deif.com>
Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make the function static to avoid a
warning: no previous prototype for ‘vmx_enable_tdp’
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Dan Williams