drop VPFE_CMD_S_CCDC_RAW_PARAMS ioctl from dm355/dm644x following reasons:

- This ioctl was never in public api and was only defined in kernel header.
- The function set_params constantly mixes up pointers and phys_addr_t
  numbers.
- This is part of a 'VPFE_CMD_S_CCDC_RAW_PARAMS' ioctl command that is
  described as an 'experimental ioctl that will change in future kernels'.
- The code to allocate the table never gets called after we copy_from_user
  the user input over the kernel settings, and then compare them
  for inequality.
- We then go on to use an address provided by user space as both the
  __user pointer for input and pass it through phys_to_virt to come up
  with a kernel pointer to copy the data to. This looks like a trivially
  exploitable root hole.
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

this patch makes sure VPFE_CMD_S_CCDC_RAW_PARAMS ioctl no longer works
for vpfe_capture driver with a minimal patch suitable for backporting.

- This ioctl was never in public api and was only defined in kernel header.
- The function set_params constantly mixes up pointers and phys_addr_t
  numbers.
- This is part of a 'VPFE_CMD_S_CCDC_RAW_PARAMS' ioctl command that is
  described as an 'experimental ioctl that will change in future kernels'.
- The code to allocate the table never gets called after we copy_from_user
  the user input over the kernel settings, and then compare them
  for inequality.
- We then go on to use an address provided by user space as both the
  __user pointer for input and pass it through phys_to_virt to come up
  with a kernel pointer to copy the data to. This looks like a trivially
  exploitable root hole.

Due to these reasons we make sure this ioctl now returns -EINVAL and backport
this patch as far as possible.

Fixes: 5f15fbb6 ("V4L/DVB (12251): v4l: dm644x ccdc module for vpfe capture driver")
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: <stable@vger.kernel.org>      # for v3.7 and up
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

In venus_boot(), we pass a pointer to a phys_addr_t
into dmam_alloc_coherent, which the compiler warns about:

platform/qcom/venus/firmware.c: In function 'venus_boot':
platform/qcom/venus/firmware.c:63:49: error: passing argument 3 of 'dmam_alloc_coherent' from incompatible pointer type [-Werror=incompatible-pointer-types]

To avoid the error refactor venus_boot function by discard
dma_alloc_coherent invocation because we don't want to map the
memory for the device.  Something more, the usage of
DMA mapping API is actually wrong and the current
implementation relies on several bugs in DMA mapping code.
When these bugs are fixed that will break firmware loading,
so fix this now to avoid future troubles.

The meaning of venus_boot is to copy the content of the
firmware buffer into reserved (and memblock removed)
block of memory and pass that physical address to the
trusted zone for authentication and mapping through iommu
form the secure world. After iommu mapping is done the iova
is passed as ane entry point to the remote processor.

After this change memory-region property is parsed manually
and the physical address is memremap to CPU, call mdt_load to
load firmware segments into proper places and unmap
reserved memory.

Fixes: af2c3834 ("[media] media: venus: adding core part and helper functions")
Signed-off-by: NStanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Not entirely sure what triggers it, but with venus build as kernel
module and in initrd, we hit this crash:

  Unable to handle kernel paging request at virtual address ffff80003c039000
  pgd = ffff00000a14f000
  [ffff80003c039000] *pgd=00000000bd9f7003, *pud=00000000bd9f6003, *pmd=00000000bd9f0003, *pte=0000000000000000
  Internal error: Oops: 96000007 [#1] SMP
  Modules linked in: qcom_wcnss_pil(E+) crc32_ce(E) qcom_common(E) venus_core(E+) remoteproc(E) snd_soc_msm8916_digital(E) virtio_ring(E) cdc_ether(E) snd_soc_lpass_apq8016(E) snd_soc_lpass_cpu(E) snd_soc_apq8016_sbc(E) snd_soc_lpass_platform(E) v4l2_mem2mem(E) virtio(E) snd_soc_core(E) ac97_bus(E) snd_pcm_dmaengine(E) snd_seq(E) leds_gpio(E) videobuf2_v4l2(E) videobuf2_core(E) snd_seq_device(E) snd_pcm(E) videodev(E) media(E) nvmem_qfprom(E) msm(E) snd_timer(E) snd(E) soundcore(E) spi_qup(E) mdt_loader(E) qcom_tsens(E) qcom_spmi_temp_alarm(E) nvmem_core(E) msm_rng(E) uas(E) usb_storage(E) dm9601(E) usbnet(E) mii(E) mmc_block(E) adv7511(E) drm_kms_helper(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) fb_sys_fops(E) qcom_spmi_vadc(E) qcom_vadc_common(PE) industrialio(E) pinctrl_spmi_mpp(E)
   pinctrl_spmi_gpio(E) rtc_pm8xxx(E) clk_smd_rpm(E) sdhci_msm(E) sdhci_pltfm(E) qcom_smd_regulator(E) drm(E) smd_rpm(E) qcom_spmi_pmic(E) regmap_spmi(E) ci_hdrc_msm(E) ci_hdrc(E) usb3503(E) extcon_usb_gpio(E) phy_msm_usb(E) udc_core(E) qcom_hwspinlock(E) extcon_core(E) ehci_msm(E) i2c_qup(E) sdhci(E) mmc_core(E) spmi_pmic_arb(E) spmi(E) qcom_smd(E) smsm(E) rpmsg_core(E) smp2p(E) smem(E) hwspinlock_core(E) gpio_keys(E)
  CPU: 2 PID: 551 Comm: irq/150-venus Tainted: P            E   4.12.0+ #1625
  Hardware name: qualcomm dragonboard410c/dragonboard410c, BIOS 2017.07-rc2-00144-ga97bdbdf72-dirty 07/08/2017
  task: ffff800037338000 task.stack: ffff800038e00000
  PC is at hfi_sys_init_done+0x64/0x140 [venus_core]
  LR is at hfi_process_msg_packet+0xcc/0x1e8 [venus_core]
  pc : [<ffff00000118b384>] lr : [<ffff00000118c11c>] pstate: 20400145
  sp : ffff800038e03c60
  x29: ffff800038e03c60 x28: 0000000000000000
  x27: 00000000000df018 x26: ffff00000118f4d0
  x25: 0000000000020003 x24: ffff80003a8d3010
  x23: ffff00000118f760 x22: ffff800037b40028
  x21: ffff8000382981f0 x20: ffff800037b40028
  x19: ffff80003c039000 x18: 0000000000000020
  x17: 0000000000000000 x16: ffff800037338000
  x15: ffffffffffffffff x14: 0000001000000014
  x13: 0000000100001007 x12: 0000000100000020
  x11: 0000100e00000000 x10: 0000000000000001
  x9 : 0000000200000000 x8 : 0000001400000001
  x7 : 0000000000001010 x6 : 0000000000000148
  x5 : 0000000000001009 x4 : ffff80003c039000
  x3 : 00000000cd770abb x2 : 0000000000000042
  x1 : 0000000000000788 x0 : 0000000000000002
  Process irq/150-venus (pid: 551, stack limit = 0xffff800038e00000)
  Call trace:
  [<ffff00000118b384>] hfi_sys_init_done+0x64/0x140 [venus_core]
  [<ffff00000118c11c>] hfi_process_msg_packet+0xcc/0x1e8 [venus_core]
  [<ffff00000118a2b4>] venus_isr_thread+0x1b4/0x208 [venus_core]
  [<ffff00000118e750>] hfi_isr_thread+0x28/0x38 [venus_core]
  [<ffff000008161550>] irq_thread_fn+0x30/0x70
  [<ffff0000081617fc>] irq_thread+0x14c/0x1c8
  [<ffff000008105e68>] kthread+0x138/0x140
  [<ffff000008083590>] ret_from_fork+0x10/0x40
  Code: 52820125 52820207 7a431820 54000249 (b9400263)
  ---[ end trace c963460f20a984b6 ]---

The problem is that in the error case, we've incremented the data ptr
but not decremented rem_bytes, and keep reading (presumably garbage)
until eventually we go beyond the end of the buffer.

Instead, on first error, we should probably just bail out.  Other
option is to increment read_bytes by sizeof(u32) before the switch,
rather than only accounting for the ptype header in the non-error
case.  Note that in this case it is HFI_ERR_SYS_INVALID_PARAMETER,
ie. an unrecognized/unsupported parameter, so interpreting the next
word as a property type would be bogus.  The other error cases are
due to truncated buffer, so there isn't likely to be anything valid
to interpret in the remainder of the buffer.  So just bailing seems
like a reasonable solution.
Signed-off-by: NRob Clark <robdclark@gmail.com>
Reviewed-by: NStanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

If QCOM_MDT_LOADER is enabled, but ARCH_QCOM is not, we run into
a build error:

ERROR: "qcom_mdt_load" [drivers/media/platform/qcom/venus/venus-core.ko] undefined!
ERROR: "qcom_mdt_get_size" [drivers/media/platform/qcom/venus/venus-core.ko] undefined!

This changes the 'select' statement again, so we only try to enable
those symbols when the drivers will actually get built, and explicitly
test for QCOM_MDT_LOADER to be enabled before calling into it.

Fixes: 76724b30 ("[media] media: venus: enable building with COMPILE_TEST")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NStanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Without PM support, gcc warns about two unused functions:

platform/qcom/venus/core.c:146:13: error: 'venus_clks_disable' defined but not used [-Werror=unused-function]
platform/qcom/venus/core.c:126:12: error: 'venus_clks_enable' defined but not used [-Werror=unused-function]

The problem as usual are incorrect #ifdefs, so the easiest fix
is to do away with the #ifdef completely and mark the suspend/resume
handlers as __maybe_unused, which they are.

Fixes: af2c3834 ("[media] media: venus: adding core part and helper functions")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NStanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Allow calling cec_notifier_set_phys_addr and
cec_notifier_set_phys_addr_from_edid with a NULL notifier, in which
case these functions do nothing.

Add a cec_notifier_phys_addr_invalidate helper function (the notifier
equivalent of cec_phys_addr_invalidate).

These changes simplify drm CEC driver support.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The persistent_config option is used to make the CEC settings persistent by using
the eeprom inside the device to store this information. This was on by default, which
caused confusion since this device now behaves differently from other CEC devices
which all come up unconfigured.

Another reason for doing this now is that I hope a more standard way of selecting
persistent configuration will be created in the future. And for that to work all
CEC drivers should behave the same and come up unconfigured by default.

None of the open source CEC applications are using this CEC framework at the moment
so change this behavior before it is too late.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org>      # for v4.10 and up
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The switch in cec_transmit_attempt_done() should ignore the
CEC_TX_STATUS_MAX_RETRIES status bit.

Calling this function with e.g. CEC_TX_STATUS_NACK | CEC_TX_STATUS_MAX_RETRIES
is perfectly legal and should not trigger the WARN(1).
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

I noticed an array underflow in ov5693_enum_frame_size().  The code
looks like this:

	int index = fse->index;

	if (index >= N_RES)
		retur -EINVAL;

fse->index is a u32 that comes from the user.  We want negative values
to be counted as -EINVAL but they aren't.  There are several ways to fix
this but I feel like the best fix for future proofing is to change the
type of N_RES from int to unsigned long to make it the same as if we
were comparing against ARRAY_SIZE().
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Since commit e8f48188 ("[media] lirc: advertise
LIRC_CAN_GET_REC_RESOLUTION and improve") lircd uses the ioctl
LIRC_GET_REC_RESOLUTION to determine the shortest pulse or space that
the hardware can detect. This breaks decoding in lirc because lircd
expects the answer in microseconds, but nanoseconds is returned.

Cc: <stable@vger.kernel.org> # v2.6.36+
Reported-by: NDerek <user.vdr@gmail.com>
Tested-by: NDerek <user.vdr@gmail.com>
Signed-off-by: NSean Young <sean@mess.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Sending patches with SVG files via e-mail has a drawback: line
size could be bigger than 998, with is the limit given by
RFC 5322[1]. So, we need to enforce a lower limit, in order to
allow those patches to be properly reviewed.

[1] https://tools.ietf.org/html/rfc5322#section-2.1.1

So, use this small Perl script to limit columns size to ~900.

use Text::Wrap;
$Text::Wrap::columns = 900;

$t.=$_ while (<>);

print wrap("","",$t);
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Debian's ImageMagick is currently unable to decode those
images. Use scour to simplify the SVG, and provide only
one font type, in order to make it more palatable.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

This file is too big, with cause it to require a lot
of memory when parsed by texlive.

Optimize it, in order to avoid the need of touching at
main_memory at texmf.cnf.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The vimc platform drivers define a platform device ID table but these
are not set to the .id_table field in the platform driver structure.

So the platform device ID table is only used to fill the aliases in
the module but are not used for matching (works because the platform
subsystem fallbacks to the driver's name if no .id_table is set).

But this also means that the platform device ID table isn't used if
the driver is built-in, which leads to the following build warning:

This causes the following build warnings when the driver is built-in:

drivers/media/platform/vimc//vimc-capture.c:528:40: warning: ‘vimc_cap_driver_ids’ defined but not used [-Wunused-const-variable=]
 static const struct platform_device_id vimc_cap_driver_ids[] = {
                                        ^~~~~~~~~~~~~~~~~~~
drivers/media/platform/vimc//vimc-debayer.c:588:40: warning: ‘vimc_deb_driver_ids’ defined but not used [-Wunused-const-variable=]
 static const struct platform_device_id vimc_deb_driver_ids[] = {
                                        ^~~~~~~~~~~~~~~~~~~
drivers/media/platform/vimc//vimc-scaler.c:442:40: warning: ‘vimc_sca_driver_ids’ defined but not used [-Wunused-const-variable=]
 static const struct platform_device_id vimc_sca_driver_ids[] = {
                                        ^~~~~~~~~~~~~~~~~~~
drivers/media/platform/vimc//vimc-sensor.c:376:40: warning: ‘vimc_sen_driver_ids’ defined but not used [-Wunused-const-variable=]
 static const struct platform_device_id vimc_sen_driver_ids[] = {
                                        ^~~~~~~~~~~~~~~~~~~
Reported-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
Suggested-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NJavier Martinez Canillas <javierm@redhat.com>
Reviewed-by: NHelen Koike <helen.koike@collabora.com>
Acked-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Instead of directly using -Wno-foo, use cc-disable-warning, as it
checks if the compiler has the warnings we want to disable.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Get rid of those two warnings:
drivers/media/platform/davinci/vpif_capture.c: In function 'vpif_remove':
drivers/media/platform/davinci/vpif_capture.c:1722:21: warning: variable 'common' set but not used [-Wunused-but-set-variable]
  struct common_obj *common;
                     ^~~~~~
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_remove':
drivers/media/platform/davinci/vpif_display.c:1342:21: warning: variable 'common' set but not used [-Wunused-but-set-variable]
  struct common_obj *common;
                     ^~~~~~
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Linux v4.13-rc1

* tag 'v4.13-rc1': (11136 commits)
  Linux v4.13-rc1
  random: reorder READ_ONCE() in get_random_uXX
  random: suppress spammy warnings about unseeded randomness
  replace incorrect strscpy use in FORTIFY_SOURCE
  kmod: throttle kmod thread limit
  kmod: add test driver to stress test the module loader
  MAINTAINERS: give kmod some maintainer love
  xtensa: use generic fb.h
  fault-inject: add /proc/<pid>/fail-nth
  fault-inject: simplify access check for fail-nth
  fault-inject: make fail-nth read/write interface symmetric
  fault-inject: parse as natural 1-based value for fail-nth write interface
  fault-inject: automatically detect the number base for fail-nth write interface
  kernel/watchdog.c: use better pr_fmt prefix
  MAINTAINERS: move the befs tree to kernel.org
  lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int
  mm: fix overflow check in expand_upwards()
  ubifs: Set double hash cookie also for RENAME_EXCHANGE
  ubifs: Massage assert in ubifs_xattr_set() wrt. init_xattrs
  ubifs: Don't leak kernel memory to the MTD
  ...

Pull documentation format standardization from Jonathan Corbet:
 "This series converts a number of top-level documents to the RST format
  without incorporating them into the Sphinx tree. The hope is to bring
  some uniformity to kernel documentation and, perhaps more importantly,
  have our existing docs serve as an example of the desired formatting
  for those that will be added later.

  Mauro has gone through and fixed up a lot of top-level documentation
  files to make them conform to the RST format, but without moving or
  renaming them in any way. This will help when we incorporate the ones
  we want to keep into the Sphinx doctree, but the real purpose is to
  bring a bit of uniformity to our documentation and let the top-level
  docs serve as examples for those writing new ones"

* tag 'standardize-docs' of git://git.lwn.net/linux: (84 commits)
  docs: kprobes.txt: Fix whitespacing
  tee.txt: standardize document format
  cgroup-v2.txt: standardize document format
  dell_rbu.txt: standardize document format
  zorro.txt: standardize document format
  xz.txt: standardize document format
  xillybus.txt: standardize document format
  vfio.txt: standardize document format
  vfio-mediated-device.txt: standardize document format
  unaligned-memory-access.txt: standardize document format
  this_cpu_ops.txt: standardize document format
  svga.txt: standardize document format
  static-keys.txt: standardize document format
  smsc_ece1099.txt: standardize document format
  SM501.txt: standardize document format
  siphash.txt: standardize document format
  sgi-ioc4.txt: standardize document format
  SAK.txt: standardize document format
  rpmsg.txt: standardize document format
  robust-futexes.txt: standardize document format
  ...

Pull random updates from Ted Ts'o:
 "Add wait_for_random_bytes() and get_random_*_wait() functions so that
  callers can more safely get random bytes if they can block until the
  CRNG is initialized.

  Also print a warning if get_random_*() is called before the CRNG is
  initialized. By default, only one single-line warning will be printed
  per boot. If CONFIG_WARN_ALL_UNSEEDED_RANDOM is defined, then a
  warning will be printed for each function which tries to get random
  bytes before the CRNG is initialized. This can get spammy for certain
  architecture types, so it is not enabled by default"

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: reorder READ_ONCE() in get_random_uXX
  random: suppress spammy warnings about unseeded randomness
  random: warn when kernel uses unseeded randomness
  net/route: use get_random_int for random counter
  net/neighbor: use get_random_u32 for 32-bit hash random
  rhashtable: use get_random_u32 for hash_rnd
  ceph: ensure RNG is seeded before using
  iscsi: ensure RNG is seeded before use
  cifs: use get_random_u32 for 32-bit lock random
  random: add get_random_{bytes,u32,u64,int,long,once}_wait family
  random: add wait_for_random_bytes() API

Pull ->s_options removal from Al Viro:
 "Preparations for fsmount/fsopen stuff (coming next cycle). Everything
  gets moved to explicit ->show_options(), killing ->s_options off +
  some cosmetic bits around fs/namespace.c and friends. Basically, the
  stuff needed to work with fsmount series with minimum of conflicts
  with other work.

  It's not strictly required for this merge window, but it would reduce
  the PITA during the coming cycle, so it would be nice to have those
  bits and pieces out of the way"

* 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  isofs: Fix isofs_show_options()
  VFS: Kill off s_options and helpers
  orangefs: Implement show_options
  9p: Implement show_options
  isofs: Implement show_options
  afs: Implement show_options
  affs: Implement show_options
  befs: Implement show_options
  spufs: Implement show_options
  bpf: Implement show_options
  ramfs: Implement show_options
  pstore: Implement show_options
  omfs: Implement show_options
  hugetlbfs: Implement show_options
  VFS: Don't use save/replace_mount_options if not using generic_show_options
  VFS: Provide empty name qstr
  VFS: Make get_filesystem() return the affected filesystem
  VFS: Clean up whitespace in fs/namespace.c and fs/super.c
  Provide a function to create a NUL-terminated string from unterminated data

Pull more __copy_.._user elimination from Al Viro.

* 'work.__copy_to_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  drm_dp_aux_dev: switch to read_iter/write_iter

Pull uacess-unaligned removal from Al Viro:
 "That stuff had just one user, and an exotic one, at that - binfmt_flat
  on arm and m68k"

* 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  kill {__,}{get,put}_user_unaligned()
  binfmt_flat: flat_{get,put}_addr_from_rp() should be able to fail

Pull network field-by-field copy-in updates from Al Viro:
 "This part of the misc compat queue was held back for review from
  networking folks and since davem has jus ACKed those..."

* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  get_compat_bpf_fprog(): don't copyin field-by-field
  get_compat_msghdr(): get rid of field-by-field copyin
  copy_msghdr_from_user(): get rid of field-by-field copyin

Pull MIPS updates from Ralf Baechle:
 "Boston platform support:
   - Document DT bindings
   - Add CLK driver for board clocks

  CM:
   - Avoid per-core locking with CM3 & higher
   - WARN on attempt to lock invalid VP, not BUG

  CPS:
   - Select CONFIG_SYS_SUPPORTS_SCHED_SMT for MIPSr6
   - Prevent multi-core with dcache aliasing
   - Handle cores not powering down more gracefully
   - Handle spurious VP starts more gracefully

  DSP:
   - Add lwx & lhx missaligned access support

  eBPF:
   - Add MIPS support along with many supporting change to add the
     required infrastructure

  Generic arch code:
   - Misc sysmips MIPS_ATOMIC_SET fixes
   - Drop duplicate HAVE_SYSCALL_TRACEPOINTS
   - Negate error syscall return in trace
   - Correct forced syscall errors
   - Traced negative syscalls should return -ENOSYS
   - Allow samples/bpf/tracex5 to access syscall arguments for sane
     traces
   - Cleanup from old Kconfig options in defconfigs
   - Fix PREF instruction usage by memcpy for MIPS R6
   - Fix various special cases in the FPU eulation
   - Fix some special cases in MIPS16e2 support
   - Fix MIPS I ISA /proc/cpuinfo reporting
   - Sort MIPS Kconfig alphabetically
   - Fix minimum alignment requirement of IRQ stack as required by
     ABI / GCC
   - Fix special cases in the module loader
   - Perform post-DMA cache flushes on systems with MAARs
   - Probe the I6500 CPU
   - Cleanup cmpxchg and add support for 1 and 2 byte operations
   - Use queued read/write locks (qrwlock)
   - Use queued spinlocks (qspinlock)
   - Add CPU shared FTLB feature detection
   - Handle tlbex-tlbp race condition
   - Allow storing pgd in C0_CONTEXT for MIPSr6
   - Use current_cpu_type() in m4kc_tlbp_war()
   - Support Boston in the generic kernel

  Generic platform:
   - yamon-dt: Pull YAMON DT shim code out of SEAD-3 board
   - yamon-dt: Support > 256MB of RAM
   - yamon-dt: Use serial* rather than uart* aliases
   - Abstract FDT fixup application
   - Set RTC_ALWAYS_BCD to 0
   - Add a MAINTAINERS entry

  core kernel:
   - qspinlock.c: include linux/prefetch.h

  Loongson 3:
   - Add support

  Perf:
   - Add I6500 support

  SEAD-3:
   - Remove GIC timer from DT
   - Set interrupt-parent per-device, not at root node
   - Fix GIC interrupt specifiers

  SMP:
   - Skip IPI setup if we only have a single CPU

  VDSO:
   - Make comment match reality
   - Improvements to time code in VDSO"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (86 commits)
  locking/qspinlock: Include linux/prefetch.h
  MIPS: Fix MIPS I ISA /proc/cpuinfo reporting
  MIPS: Fix minimum alignment requirement of IRQ stack
  MIPS: generic: Support MIPS Boston development boards
  MIPS: DTS: img: Don't attempt to build-in all .dtb files
  clk: boston: Add a driver for MIPS Boston board clocks
  dt-bindings: Document img,boston-clock binding
  MIPS: Traced negative syscalls should return -ENOSYS
  MIPS: Correct forced syscall errors
  MIPS: Negate error syscall return in trace
  MIPS: Drop duplicate HAVE_SYSCALL_TRACEPOINTS select
  MIPS16e2: Provide feature overrides for non-MIPS16 systems
  MIPS: MIPS16e2: Report ASE presence in /proc/cpuinfo
  MIPS: MIPS16e2: Subdecode extended LWSP/SWSP instructions
  MIPS: MIPS16e2: Identify ASE presence
  MIPS: VDSO: Fix a mismatch between comment and preprocessor constant
  MIPS: VDSO: Add implementation of gettimeofday() fallback
  MIPS: VDSO: Add implementation of clock_gettime() fallback
  MIPS: VDSO: Fix conversions in do_monotonic()/do_monotonic_coarse()
  MIPS: Use current_cpu_type() in m4kc_tlbp_war()
  ...

Pull UML updates from Richard Weinberger:
 "Mostly fixes for UML:

   - First round of fixes for PTRACE_GETRESET/SETREGSET

   - A printf vs printk cleanup

   - Minor improvements"

* 'for-linus-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Correctly check for PTRACE_GETRESET/SETREGSET
  um: v2: Use generic NOTES macro
  um: Add kerneldoc for userspace_tramp() and start_userspace()
  um: Add kerneldoc for segv_handler
  um: stub-data.h: remove superfluous include
  um: userspace - be more verbose in ptrace set regs error
  um: add dummy ioremap and iounmap functions
  um: Allow building and running on older hosts
  um: Avoid longjmp/setjmp symbol clashes with libpthread.a
  um: console: Ignore console= option
  um: Use os_warn to print out pre-boot warning/error messages
  um: Add os_warn() for pre-boot warning/error messages
  um: Use os_info for the messages on normal path
  um: Add os_info() for pre-boot information messages
  um: Use printk instead of printf in make_uml_dir

Pull UBIFS updates from Richard Weinberger:

 - Updates and fixes for the file encryption mode

 - Minor improvements

 - Random fixes

* tag 'upstream-4.13-rc1' of git://git.infradead.org/linux-ubifs:
  ubifs: Set double hash cookie also for RENAME_EXCHANGE
  ubifs: Massage assert in ubifs_xattr_set() wrt. init_xattrs
  ubifs: Don't leak kernel memory to the MTD
  ubifs: Change gfp flags in page allocation for bulk read
  ubifs: Fix oops when remounting with no_bulk_read.
  ubifs: Fail commit if TNC is obviously inconsistent
  ubifs: allow userspace to map mounts to volumes
  ubifs: Wire-up statx() support
  ubifs: Remove dead code from ubifs_get_link()
  ubifs: Massage debug prints wrt. fscrypt
  ubifs: Add assert to dent_key_init()
  ubifs: Fix unlink code wrt. double hash lookups
  ubifs: Fix data node size for truncating uncompressed nodes
  ubifs: Don't encrypt special files on creation
  ubifs: Fix memory leak in RENAME_WHITEOUT error path in do_rename
  ubifs: Fix inode data budget in ubifs_mknod
  ubifs: Correctly evict xattr inodes
  ubifs: Unexport ubifs_inode_slab
  ubifs: don't bother checking for encryption key in ->mmap()
  ubifs: require key for truncate(2) of encrypted file

Pull more KVM updates from Radim Krčmář:
 "Second batch of KVM updates for v4.13

  Common:
   - add uevents for VM creation/destruction
   - annotate and properly access RCU-protected objects

  s390:
   - rename IOCTL added in the first v4.13 merge

  x86:
   - emulate VMLOAD VMSAVE feature in SVM
   - support paravirtual asynchronous page fault while nested
   - add Hyper-V userspace interfaces for better migration
   - improve master clock corner cases
   - extend internal error reporting after EPT misconfig
   - correct single-stepping of emulated instructions in SVM
   - handle MCE during VM entry
   - fix nVMX VM entry checks and nVMX VMCS shadowing"

* tag 'kvm-4.13-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
  kvm: x86: hyperv: make VP_INDEX managed by userspace
  KVM: async_pf: Let guest support delivery of async_pf from guest mode
  KVM: async_pf: Force a nested vmexit if the injected #PF is async_pf
  KVM: async_pf: Add L1 guest async_pf #PF vmexit handler
  KVM: x86: Simplify kvm_x86_ops->queue_exception parameter list
  kvm: x86: hyperv: add KVM_CAP_HYPERV_SYNIC2
  KVM: x86: make backwards_tsc_observed a per-VM variable
  KVM: trigger uevents when creating or destroying a VM
  KVM: SVM: Enable Virtual VMLOAD VMSAVE feature
  KVM: SVM: Add Virtual VMLOAD VMSAVE feature definition
  KVM: SVM: Rename lbr_ctl field in the vmcb control area
  KVM: SVM: Prepare for new bit definition in lbr_ctl
  KVM: SVM: handle singlestep exception when skipping emulated instructions
  KVM: x86: take slots_lock in kvm_free_pit
  KVM: s390: Fix KVM_S390_GET_CMMA_BITS ioctl definition
  kvm: vmx: Properly handle machine check during VM-entry
  KVM: x86: update master clock before computing kvmclock_offset
  kvm: nVMX: Shadow "high" parts of shadowed 64-bit VMCS fields
  kvm: nVMX: Fix nested_vmx_check_msr_bitmap_controls
  kvm: nVMX: Validate the I/O bitmaps on nested VM-entry
  ...

Avoid the READ_ONCE in commit 4a072c71 ("random: silence compiler
warnings and fix race") if we can leave the function after
arch_get_random_XXX().

Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

Unfortunately, on some models of some architectures getting a fully
seeded CRNG is extremely difficult, and so this can result in dmesg
getting spammed for a surprisingly long time.  This is really bad from
a security perspective, and so architecture maintainers really need to
do what they can to get the CRNG seeded sooner after the system is
booted.  However, users can't do anything actionble to address this,
and spamming the kernel messages log will only just annoy people.

For developers who want to work on improving this situation,
CONFIG_WARN_UNSEEDED_RANDOM has been renamed to
CONFIG_WARN_ALL_UNSEEDED_RANDOM.  By default the kernel will always
print the first use of unseeded randomness.  This way, hopefully the
security obsessed will be happy that there is _some_ indication when
the kernel boots there may be a potential issue with that architecture
or subarchitecture.  To see all uses of unseeded randomness,
developers can enable CONFIG_WARN_ALL_UNSEEDED_RANDOM.
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

Pull XFS fixes from Darrick Wong:
 "Largely debugging and regression fixes.

   - Add some locking assertions for the _ilock helpers.

   - Revert the XFS_QMOPT_NOLOCK patch; after discussion with hch the
     online fsck patch that would have needed it has been redesigned and
     no longer needs it.

   - Fix behavioral regression of SEEK_HOLE/DATA with negative offsets
     to match 4.12-era XFS behavior"

* tag 'xfs-4.13-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  vfs: in iomap seek_{hole,data}, return -ENXIO for negative offsets
  Revert "xfs: grab dquots without taking the ilock"
  xfs: assert locking precondition in xfs_readlink_bmap_ilocked
  xfs: assert locking precondіtion in xfs_attr_list_int_ilocked
  xfs: fixup xfs_attr_get_ilocked

Pull btrfs fixes from David Sterba:
 "We've identified and fixed a silent corruption (introduced by code in
  the first pull), a fixup after the blk_status_t merge and two fixes to
  incremental send that Filipe has been hunting for some time"

* 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Btrfs: fix unexpected return value of bio_readpage_error
  btrfs: btrfs_create_repair_bio never fails, skip error handling
  btrfs: cloned bios must not be iterated by bio_for_each_segment_all
  Btrfs: fix write corruption due to bio cloning on raid5/6
  Btrfs: incremental send, fix invalid memory access
  Btrfs: incremental send, fix invalid path for link commands

Pull a few more input updates from Dmitry Torokhov:

 - multi-touch handling for Xen

 - fix for long-standing bug causing crashes in i8042 on boot

 - change to gpio_keys to better handle key presses during system state
   transition

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - fix crash at boot time
  Input: gpio_keys - handle the missing key press event in resume phase
  Input: xen-kbdfront - add multi-touch support

Pull crypto fixes from Herbert Xu:

 - fix new compiler warnings in cavium

 - set post-op IV properly in caam (this fixes chaining)

 - fix potential use-after-free in atmel in case of EBUSY

 - fix sleeping in softirq path in chcr

 - disable buggy sha1-avx2 driver (may overread and page fault)

 - fix use-after-free on signals in caam

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: cavium - make several functions static
  crypto: chcr - Avoid algo allocation in softirq.
  crypto: caam - properly set IV after {en,de}crypt
  crypto: atmel - only treat EBUSY as transient if backlog
  crypto: af_alg - Avoid sock_graft call warning
  crypto: caam - fix signals handling
  crypto: sha1-ssse3 - Disable avx2

Pull device properties framework fix from Rafael Wysocki:
 "This fixes a problem with bool properties that could be seen as "true"
  when the property was not present at all by adding a special helper
  for bool properties with checks for all of the requisute conditions
  (Sakari Ailus)"

* tag 'devprop-fix-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  device property: Introduce fwnode_call_bool_op() for ops that return bool

Pull ACPI fixes from Rafael Wysocki:
 "These fix the return value of an IRQ mapping routine in the ACPI core,
  fix an EC driver issue causing abnormal fan behavior after system
  resume on some systems and add quirks for ACPI device objects that
  need to be treated as "always present" to work around bogus
  implementations of the _STA control method.

  Specifics:

   - Fix the return value of acpi_gsi_to_irq() to make the GSI to IRQ
     mapping work on the Mustang (ARM64) platform (Mark Salter).

   - Fix an EC driver issue that causes fans to behave abnormally after
     system resume on some systems which turns out to be related to
     switching over the EC into the polling mode during the noirq stages
     of system suspend and resume (Lv Zheng).

   - Add quirks for ACPI device objects that need to be treated as
     "always present", because their _STA methods are designed to work
     around Windows driver bugs and return garbage from our perspective
     (Hans de Goede)"

* tag 'acpi-fixes-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / x86: Add KIOX000A accelerometer on GPD win to always_present_ids array
  ACPI / x86: Add Dell Venue 11 Pro 7130 touchscreen to always_present_ids
  ACPI / x86: Allow matching always_present_id array entries by DMI
  Revert "ACPI / EC: Enable event freeze mode..." to fix a regression
  ACPI / EC: Drop EC noirq hooks to fix a regression
  ACPI / irq: Fix return code of acpi_gsi_to_irq()

Pull power management fixes from Rafael Wysocki:
 "These fix a recently exposed issue in the PCI device wakeup code and
  one older problem related to PCI device wakeup that has been reported
  recently, modify one more piece of computations in intel_pstate to get
  rid of a rounding error, fix a possible race in the schedutil cpufreq
  governor, fix the device PM QoS sysfs interface to correctly handle
  invalid user input, fix return values of two probe routines in devfreq
  drivers and constify an attribute_group structure in devfreq.

  Specifics:

   - Avoid clearing the PCI PME Enable bit for devices as a result of
     config space restoration which confuses AML executed afterward and
     causes wakeup events to be lost on some systems (Rafael Wysocki).

   - Fix the native PCIe PME interrupts handling in the cases when the
     PME IRQ is set up as a system wakeup one so that runtime PM remote
     wakeup works as expected after system resume on systems where that
     happens (Rafael Wysocki).

   - Fix the device PM QoS sysfs interface to handle invalid user input
     correctly instead of using an unititialized variable value as the
     latency tolerance for the device at hand (Dan Carpenter).

   - Get rid of one more rounding error from intel_pstate computations
     (Srinivas Pandruvada).

   - Fix the schedutil cpufreq governor to prevent it from possibly
     accessing unititialized data structures from governor callbacks in
     some cases on systems when multiple CPUs share a single cpufreq
     policy object (Vikram Mulukutla).

   - Fix the return values of probe routines in two devfreq drivers
     (Gustavo Silva).

   - Constify an attribute_group structure in devfreq (Arvind Yadav)"

* tag 'pm-fixes-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI / PM: Fix native PME handling during system suspend/resume
  PCI / PM: Restore PME Enable after config space restoration
  cpufreq: schedutil: Fix sugov_start() versus sugov_update_shared() race
  PM / QoS: return -EINVAL for bogus strings
  cpufreq: intel_pstate: Fix ratio setting for min_perf_pct
  PM / devfreq: constify attribute_group structures.
  PM / devfreq: tegra: fix error return code in tegra_devfreq_probe()
  PM / devfreq: rk3399_dmc: fix error return code in rk3399_dmcfreq_probe()

Merge even more updates from Andrew Morton:

 - a few leftovers

 - fault-injector rework

 - add a module loader test driver

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  kmod: throttle kmod thread limit
  kmod: add test driver to stress test the module loader
  MAINTAINERS: give kmod some maintainer love
  xtensa: use generic fb.h
  fault-inject: add /proc/<pid>/fail-nth
  fault-inject: simplify access check for fail-nth
  fault-inject: make fail-nth read/write interface symmetric
  fault-inject: parse as natural 1-based value for fail-nth write interface
  fault-inject: automatically detect the number base for fail-nth write interface
  kernel/watchdog.c: use better pr_fmt prefix
  MAINTAINERS: move the befs tree to kernel.org
  lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int
  mm: fix overflow check in expand_upwards()

Using strscpy was wrong because FORTIFY_SOURCE is passing the maximum
possible size of the outermost object, but strscpy defines the count
parameter as the exact buffer size, so this could copy past the end of
the source.  This would still be wrong with the planned usage of
__builtin_object_size(p, 1) for intra-object overflow checks since it's
the maximum possible size of the specified object with no guarantee of
it being that large.

Reuse of the fortified functions like this currently makes the runtime
error reporting less precise but that can be improved later on.

Noticed by Dave Jones and KASAN.
Signed-off-by: NDaniel Micay <danielmicay@gmail.com>
Acked-by: NKees Cook <keescook@chromium.org>
Reported-by: NDave Jones <davej@codemonkey.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>