CONFIG_KFENCE_NUM_OBJECTS controls the constant memory overhead that
KFENCE introduces for its memory pool. By default it is 255 objects
(2Mb extra memory), but since concerns have been raised that low-memory
devices may not afford that, we are lowering the number of objects
to 63 (512Kb extra memory).
So far we haven't seen Android devices allocate more than 50 KFENCE
objects. Should the kernel exhaust the pool, KFENCE will stop allocating
new objects and fall back to SLAB/SLUB until one of the objects is
freed.
An immediate consequence of reducing the pool size is that a freed
KFENCE object will be reused 4x times faster, effectively reducing the
probability of detecting a use-after-free. Since KFENCE is a best-effort
error detection tool, not a use-after-free mitigation mechanism, we
believe this should not be problematic.
Bug: 181822795
Test: run KFENCE on an Android device
Signed-off-by: Alexander Potapenko <glider@google.com>
Change-Id: I88fca80eea8b382115de03dbb104fd305b35476f
Compiler (arm-linux-gnueabihf-gcc 8.3.0) complains about an invalid cast
of an __aligned_u64 integer to a pointer on 32-bit architectures. Using
u64_to_user_ptr() for the cast fixes the following warning:
fs/incfs/pseudo_files.c: In function ‘ioctl_create_file’:
fs/incfs/pseudo_files.c:656:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
656 | (u8 __user *)args.signature_info,
| ^
Bug: 183339614
Fixes: bc6a70e849 (ANDROID: Incremental fs: Remove signature checks from kernel)
Reported-by: kernelci.org bot <bot@kernelci.org>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Change-Id: I98a987fb83c160740796c0b4b3fdd7551880e12a
Use the correct printk specifier [%zu] for size_t variable.
This fixes the following warning:
fs/incfs/format.c: In function ‘incfs_read_next_metadata_record’:
./include/linux/kern_levels.h:5:18: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘size_t’ {aka ‘unsigned int’} [-Wformat=]
fs/incfs/format.c:669:3: note: in expansion of macro ‘pr_warn’
669 | pr_warn("incfs: The record is too large. Size: %ld",
| ^~~~~~~
Bug: 183339614
Fixes: c6819dd778 (ANDROID: Initial commit of Incremental FS)
Reported-by: kernelci.org bot <bot@kernelci.org>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Change-Id: Ia784a9ced9fb6bc76e2f1baa495b3ccf568e3b1d
When KBUILD_MIXED_TREE points to the output folder of another kernel's
build output, Kbuild can compile a complete kernel tree's modules
against that other kernel tree's vmlinux. This is useful when two
kernel trees exist: a "Generic Kernel Image" tree and a "device kernel"
tree. Both trees are complete kernel source trees, and the "Generic
Kernel Image" should provide the kernel Image and device kernel tree
provides device driver modules.
To accomplish this, references to vmlinux.symvers in the device kernel
should point to the generic kernel's vmlinux.symvers and the device
kernel should skip compilation of built-in files.
Bug: 178469391
Change-Id: I614f3e87519236c4e2c5da74937cb0ecd98a278a
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
Enable hidden config SND_SOC_TOPOLOGY need by SND_SOC=m
Bug: 153682187
Change-Id: I47dabfaa6f0d138f78fbc1c9fc0d4ac3c7c73986
Signed-off-by: Gyeongtaek Lee <gt82.lee@samsung.com>
This driver is not used and can cause problems if used on modern
devices. Remove it.
This reverts commit 6115619831.
Bug: 185178770
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: I1d5acb96dda765a1e3ea0cf62a3bf4b2a78892ea
cfg80211_inform_bss expects to receive a TSF value, but is given the
time since boot in nanoseconds. TSF values are expected to be at
microsecond scale rather than nanosecond scale.
Bug: 181840234
Test: atest CtsWifiTestCases:android.net.wifi.cts.ScanResultTest#testScanResultTimeStamp -- --abi x86_64
Signed-off-by: A. Cody Schuffelen <schuffelen@google.com>
Link: https://lore.kernel.org/r/20210318200419.1421034-1-schuffelen@google.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
(cherry picked from commit b57aa17f07
https: //git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git master)
Change-Id: Icafc24ad303357926cbe955ffa12e28e0bf31e6f
The static empty definition of power_supply_get_by_phandle_array(), used
when CONFIG_OF is not set, is missing an inline keyword. This generates
multiple compiler warnings and adds function-call overhead. This patch
inlines the definition to address such issues.
Fixes:
./include/linux/power_supply.h:405:12: warning: ‘power_supply_get_by_phandle_array’ defined but not used [-Wunused-function]
405 | static int power_supply_get_by_phandle_array(struct device_node *np,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bug: 183339614
Fixes: dea1a925f6 (ANDROID: power_supply: Add a helper function to retrieve psy array from phandle)
Reported-by: kernelci.org bot <bot@kernelci.org>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Change-Id: I6ad919673d0f649d7701c573196c11795663182d
Copy vmlinux.symvers and modules.builtin to the DIST_DIR for mixed tree
builds. These files are used by the device kernel to modpost against the
GKI kernel.
These 3 new files add ~300 KB to the DIST_DIR
Bug: 178469391
Change-Id: Ic21a524aac05eafe18925982e860b0be9e6d8728
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
Pull io_uring fixes from Jens Axboe:
"Two minor fixups for the reissue logic, and one for making sure that
unbounded work is canceled on io-wq exit"
* tag 'io_uring-5.12-2021-04-09' of git://git.kernel.dk/linux-block:
io-wq: cancel unbounded works on io-wq destroy
io_uring: fix rw req completion
io_uring: clear F_REISSUE right after getting it
Pull devicetree fixes from Rob Herring:
- Fix fw_devlink failure with ".*,nr-gpios" properties
- Doc link reference fixes from Mauro
- Fixes for unaligned FDT handling found on OpenRisc. First, avoid
crash with better error handling when unflattening an unaligned FDT.
Second, fix memory allocations for FDTs to ensure alignment.
* tag 'devicetree-fixes-for-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: property: fw_devlink: do not link ".*,nr-gpios"
dt-bindings:iio:adc: update motorola,cpcap-adc.yaml reference
dt-bindings: fix references for iio-bindings.txt
dt-bindings: don't use ../dir for doc references
of: unittest: overlay: ensure proper alignment of copied FDT
of: properly check for error returned by fdt_get_name()
Pull drm fixes from Dave Airlie:
"Was relatively quiet this week, but still a few pulls came in, pretty
much small fixes across the board, a couple of regression fixes in the
amdgpu/radeon code, msm has a few minor fixes across the board, a
panel regression fix also.
amdgpu:
- DCN3 fix
- Fix CAC setting regression for TOPAZ
- Fix ttm regression
radeon:
- Fix ttm regression
msm:
- a5xx/a6xx timestamp fix
- microcode version check
- fail path fix
- block programming fix
- error removal fix
i915:
- Fix invalid access to ACPI _DSM objects
xen:
- Fix use-after-free in xen
- minor duplicate defintion cleanup
vc4:
- Reduce fifo threshold on hvs4 to fix a fifo full error
- minor redunantant assignment cleanup
panel:
- Disable TE support for Droid4 and N950"
* tag 'drm-fixes-2021-04-10' of git://anongit.freedesktop.org/drm/drm:
drm/vc4: crtc: Reduce PV fifo threshold on hvs4
drm/vc4: plane: Remove redundant assignment
drm/amdgpu/smu7: fix CAC setting on TOPAZ
drm/radeon: Fix size overflow
drm/amdgpu: Fix size overflow
drm/i915: Fix invalid access to ACPI _DSM objects
drm/amd/display: Add missing mask for DCN3
drm/panel: panel-dsi-cm: disable TE for now
drm/msm/disp/dpu1: program 3d_merge only if block is attached
drm/msm: a6xx: fix version check for the A650 SQE microcode
drm/msm: Fix a5xx/a6xx timestamps
drm/msm: Fix removal of valid error case when checking speed_bin
drm/msm: Set drvdata to NULL when msm_drm_init() fails
drivers: gpu: drm: xen_drm_front_drm_info is declared twice
gpu/xen: Fix a use after free in xen_drm_drv_init
[<vendor>,]nr-gpios property is used by some GPIO drivers[0] to indicate
the number of GPIOs present on a system, not define a GPIO. nr-gpios is
not configured by #gpio-cells and can't be parsed along with other
"*-gpios" properties.
nr-gpios without the "<vendor>," prefix is not allowed by the DT
spec[1], so only add exception for the ",nr-gpios" suffix and let the
error message continue being printed for non-compliant implementations.
[0] nr-gpios is referenced in Documentation/devicetree/bindings/gpio:
- gpio-adnp.txt
- gpio-xgene-sb.txt
- gpio-xlp.txt
- snps,dw-apb-gpio.yaml
[1] Link: cb53a16a1e/schemas/gpio/gpio-consumer.yaml (L20)
Fixes errors such as:
OF: /palmbus@300000/gpio@600: could not find phandle
Fixes: 7f00be96f1 ("of: property: Add device link support for interrupt-parent, dmas and -gpio(s)")
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: stable@vger.kernel.org # v5.5+
Link: https://lore.kernel.org/r/20210405222540.18145-1-ilya.lipnitskiy@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
Pull selinux fixes from Paul Moore:
"Three SELinux fixes.
These fix known problems relating to (re)loading SELinux policy or
changing the policy booleans, and pass our test suite without problem"
* tag 'selinux-pr-20210409' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix race between old and new sidtab
selinux: fix cond_list corruption when changing booleans
selinux: make nslot handling in avtab more robust
This enables the crng to initialize a bit more quickly, which is useful
for testing net tests.
Bug: 183963484
Change-Id: I05bed1a5e22006842c69e74f624c2cb7a435cfdd
Signed-off-by: Alistair Delva <adelva@google.com>
Optimize the drivers list for those that are defined in DT, but also
probed on a real device. Sort the modules into groups so we know why
they are pulled in.
Bug: 183963484
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: I6edef7df561b46154857ba21424a925eec0e8acf
Pull vdpa/mlx5 fixes from Michael Tsirkin:
"Last minute fixes.
These all look like something we are better off having
than not ..."
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa/mlx5: Fix suspend/resume index restoration
vdpa/mlx5: Fix wrong use of bit numbers
vdpa/mlx5: Retrieve BAR address suitable any function
vdpa/mlx5: Use the correct dma device when registering memory
vdpa/mlx5: should exclude header length and fcs from mtu
Pull remoteproc fixes from Bjorn Andersson:
"This fixes an issue with firmware loading on the TI K3 PRU, fixes
compatibility with GNU binutils for the same and resolves link error
due to a 64-bit division in the Qualcomm PIL info.
It also recognizes Mathieu Poirier as co-maintainer of the remoteproc
and rpmsg subsystems"
* tag 'rproc-v5.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
remoteproc: pru: Fix firmware loading crashes on K3 SoCs
remoteproc: pru: Fix loading of GNU Binutils ELF
MAINTAINERS: Add co-maintainer for remoteproc/RPMSG subsystems
remoteproc: qcom: pil_info: avoid 64-bit division
Pull xen fix from Juergen Gross:
"A single fix of a 5.12 patch for the rather uncommon problem of
running as a Xen guest with a real time kernel config"
* tag 'for-linus-5.12b-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/evtchn: Change irq_info lock to raw_spinlock_t
Pull ACPI fix from Rafael Wysocki:
"Fix a build issue introduced by a previous fix in the ACPI processor
driver (Vitaly Kuznetsov)"
* tag 'acpi-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: processor: Fix build when CONFIG_ACPI_PROCESSOR=m
When we suspend the VM, the VDPA interface will be reset. When the VM is
resumed again, clear_virtqueues() will clear the available and used
indices resulting in hardware virqtqueue objects becoming out of sync.
We can avoid this function alltogether since qemu will clear them if
required, e.g. when the VM went through a reboot.
Moreover, since the hw available and used indices should always be
identical on query and should be restored to the same value same value
for virtqueues that complete in order, we set the single value provided
by set_vq_state(). In get_vq_state() we return the value of hardware
used index.
Fixes: b35ccebe3e ("vdpa/mlx5: Restore the hardware used index after change map")
Fixes: 1a86b377aa ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20210408091047.4269-6-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
