Merge tag 'sunxi-config64-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/arm64

Pull "Allwinner arm64 defconfig changes for 4.14" from Chen-Yu Tsai:

Enable X-Powers AXP series PMIC mfd and regulator support by default.

* tag 'sunxi-config64-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: defconfig: Enable REGULATOR_AXP20X
  arm64: defconfig: Enable MFD_AXP20X_RSB

Merge tag 'qcom-arm64-defconfig-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/arm64

Pull "Qualcomm ARM64 Based defconfig Updates for v4.14" from Andy Gross:

* Enable Qualcomm IPQ8074 clocks and pinctrl

* tag 'qcom-arm64-defconfig-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  arm64: defconfig: Enable QCOM IPQ8074 clock and pinctrl

Merge tag 'zte-soc-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/arm64

Pull "ZTE SoC updates for 4.14" from Shawn Guo:

 - Select PINCTRL for ZTE platform, so that pinctrl driver for ZX296718
   can be enabled.

* tag 'zte-soc-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  arm64: select PINCTRL for ZTE platform

Pull "Broadcom defconfig-arm64 changes for 4.14" from Florian Fainelli:

This pull request contains ARM64 defconfig changes for Broadcom ARM64-based
SoCs for 4.14, please pull the following:

- Markus enables the Broadcom STB AVS thermal monitoring driver as a module
  which is currently queued in Rui Zhang's tree

* tag 'arm-soc/for-4.14/defconfig-arm64' of http://github.com/Broadcom/stblinux:
  arm64: defconfig: add CONFIG_BRCMSTB_THERMAL

These configs are required for booting kernel in QCOM
IPQ8074 boards.
Signed-off-by: NAbhishek Sahu <absahu@codeaurora.org>
Signed-off-by: NVaradarajan Narayanan <varada@codeaurora.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

Turn on CONFIG_BRCMSTB_THERMAL as module.
Signed-off-by: NMarkus Mayer <mmayer@broadcom.com>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

Pull "ARM64: hisilicon: defconfig updates for 4.14" from Wei Xu:

- Enable Kirin PCIe host, hi6421v530 mfd and regulator,
  syscon reboot mode, serdev bus, OP-TEE and K3 DMA support
  for hikey and hikey960

- Enable pcie based sas controller support for hip08 SoC

* tag 'hisi-defconfig-for-4.14' of git://github.com/hisilicon/linux-hisi:
  arm64: defconfig: enable DMA driver for hi3660
  arm64: defconfig: enable OP-TEE
  arm64: defconfig: enable support for serial port connected device
  arm64: defconfig: enable CONFIG_SYSCON_REBOOT_MODE
  arm64: defconfig: enable support hi6421v530 PMIC
  arm64: defconfig: enable Kirin PCIe
  arm64: defconfig: enable SCSI_HISI_SAS_PCI

Add the arm64 crypto drivers that have been added over the past
couple of kernel releases to its defconfig as modules.
Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Pull "mvebu arm64 for 4.14 (part 1)" from Gregory CLEMENT:

Enabling nop-xceiv PHY driver in the defconfig, needed for USB support
on A8K SoC based board.

Enabling fine-grained task level IRQ time accounting for ARMv8 as it was
already done for x86

* tag 'mvebu-arm64-4.14-1' of git://git.infradead.org/linux-mvebu:
  arm64: defconfig: enable fine-grained task level IRQ time accounting
  arm64: defconfig: enable nop-xceiv PHY driver

Enable the watchdog driver for UniPhier SoC
Signed-off-by: NKeiji Hayashibara <hayashibara.keiji@socionext.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Merge tag 'renesas-arm64-defconfig-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/arm64

Pull "Renesas ARM64 Based SoC Defconfig Updates for v4.14" from Simon Horman:

* compile ak4613 and renesas sound as modules

  This is intended to reduce the size of a kernel image compiled
  using the defconfig. This is timely as it brings the kernel image
  back below the size that can be booted in my environment, a limit
  it crept over in v4.13-rc1.

* tag 'renesas-arm64-defconfig-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: defconfig: compile ak4613 and renesas sound as modules

commit cee22a15 ("workqueues: Introduce new flag WQ_POWER_EFFICIENT
for power oriented workqueues") introduced the concept of power
efficient workqueues (4 years back), but it was never enabled in
upstream kernel configs.

Power efficient workqueues are simply marked as "unbound," so that jobs
queued to them can run on any CPU in the system. It leaves the target
CPU selection to the scheduler, which is the best place for such
decision making. This improves power efficiency for workqueues which are
otherwise pinned to a CPU.

Enable it for ARM64 platforms as ARM platforms were the main target for
the introduction of power efficient workqueues.
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

enable DMA driver for hi3660.
Signed-off-by: NWang Ruyi <wangruyi@huawei.com>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

This patch enables configs for Trusted Execution Environment (TEE) and
OP-TEE.

+CONFIG_TEE=y
+CONFIG_OPTEE=y
Signed-off-by: NVictor Chong <victor.chong@linaro.org>
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

This patch enables these configs:

+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_SERIAL_DEV_CTRL_TTYPORT=y

As example, a bluetooth device connected to UART port can be supported by
this.
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

Enable CONFIG_SYSCON_REBOOT_MODE
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

Enable configs for hi6421v530 mfd and regulator driver
 + CONFIG_MFD_HI6421_PMIC=y
 + CONFIG_REGULATOR_HI6421V530=y
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

Enable HiSilicon Kirin series SoCs PCIe controllers
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: NXiaowei Song <songxiaowei@hisilicon.com>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

Enable HiSilicon SAS controller based on PCI device,
which is included in hip08 SoC.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

The Allwinner A64 SoC is paired with the X-Powers AXP803 PMIC over the
Reduced Serial Bus (RSB). The regulators of this PMIC supply all power
rails of the SoC and many external peripherals.

Enable the driver for the regulators of this PMIC.
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
[wens@csie.org: refined commit message]
Signed-off-by: NChen-Yu Tsai <wens@csie.org>

The Allwinner A64 SoC is paired with the X-Powers AXP803 PMIC over the
Reduced Serial Bus (RSB).

Enable the driver for this PMIC.
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
[wens@csie.org: Refined commit message]
Signed-off-by: NChen-Yu Tsai <wens@csie.org>

Select PINCTRL for ZTE platform, so that we can have ZX pinctrl driver
options available for enabling.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

Pull x86 platform driver fix from Darren Hart:
 "Fix loop preventing some platforms from waking up via the power button
  in s2idle:

   - intel-vbtn: match power button on press rather than release"

* tag 'platform-drivers-x86-v4.13-4' of git://git.infradead.org/linux-platform-drivers-x86:
  platform/x86: intel-vbtn: match power button on press rather than release

Pull ext4 fixes from Ted Ts'o:
 "A large number of ext4 bug fixes and cleanups for v4.13"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix copy paste error in ext4_swap_extents()
  ext4: fix overflow caused by missing cast in ext4_resize_fs()
  ext4, project: expand inode extra size if possible
  ext4: cleanup ext4_expand_extra_isize_ea()
  ext4: restructure ext4_expand_extra_isize
  ext4: fix forgetten xattr lock protection in ext4_expand_extra_isize
  ext4: make xattr inode reads faster
  ext4: inplace xattr block update fails to deduplicate blocks
  ext4: remove unused mode parameter
  ext4: fix warning about stack corruption
  ext4: fix dir_nlink behaviour
  ext4: silence array overflow warning
  ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize
  ext4: release discard bio after sending discard commands
  ext4: convert swap_inode_data() over to use swap() on most of the fields
  ext4: error should be cleared if ea_inode isn't added to the cache
  ext4: Don't clear SGID when inheriting ACLs
  ext4: preserve i_mode if __ext4_set_acl() fails
  ext4: remove unused metadata accounting variables
  ext4: correct comment references to ext4_ext_direct_IO()

Pull MIPS fixes from Ralf Baechle:
 "This fixes two build issues for ralink platforms, both due to missing
  #includes which used to be included indirectly via other headers"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: ralink: mt7620: Add missing header
  MIPS: ralink: Fix build error due to missing header

The latest change of compat_sys_sigpending in commit 8f13621a
("sigpending(): move compat to native") has broken it in two ways.

First, it tries to write 4 bytes more than userspace expects:
sizeof(old_sigset_t) == sizeof(long) == 8 instead of
sizeof(compat_old_sigset_t) == sizeof(u32) == 4.

Second, on big endian architectures these bytes are being written in the
wrong order.

This bug was found by strace test suite.
Reported-by: NAnatoly Pugachev <matorola@gmail.com>
Inspired-by: NEugene Syromyatnikov <evgsyr@gmail.com>
Fixes: 8f13621a ("sigpending(): move compat to native")
Signed-off-by: NDmitry V. Levin <ldv@altlinux.org>
Acked-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This bug was found by a static code checker tool for copy paste
problems.
Signed-off-by: NManinder Singh <maninder1.s@samsung.com>
Signed-off-by: NVaneet Narang <v.narang@samsung.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

On a 32-bit platform, the value of n_blcoks_count may be wrong during
the file system is resized to size larger than 2^32 blocks.  This may
caused the superblock being corrupted with zero blocks count.

Fixes: 1c6bd717Signed-off-by: NJerry Lee <jerrylee@qnap.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org # 3.7+

When upgrading from old format, try to set project id
to old file first time, it will return EOVERFLOW, but if
that file is dirtied(touch etc), changing project id will
be allowed, this might be confusing for users, we could
try to expand @i_extra_isize here too.
Reported-by: NZhang Yi <yi.zhang@huawei.com>
Signed-off-by: NMiao Xie <miaoxie@huawei.com>
Signed-off-by: NWang Shilong <wshilong@ddn.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

Clean up some goto statement, make ext4_expand_extra_isize_ea() clearer.
Signed-off-by: NMiao Xie <miaoxie@huawei.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Reviewed-by: NWang Shilong <wshilong@ddn.com>

Current ext4_expand_extra_isize just tries to expand extra isize, if
someone is holding xattr lock or some check fails, it will give up.
So rename its name to ext4_try_to_expand_extra_isize.

Besides that, we clean up unnecessary check and move some relative checks
into it.
Signed-off-by: NMiao Xie <miaoxie@huawei.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Reviewed-by: NWang Shilong <wshilong@ddn.com>

We should avoid the contention between the i_extra_isize update and
the inline data insertion, so move the xattr trylock in front of
i_extra_isize update.
Signed-off-by: NMiao Xie <miaoxie@huawei.com>
Reviewed-by: NWang Shilong <wshilong@ddn.com>

ext4_xattr_inode_read() currently reads each block sequentially while
waiting for io operation to complete before moving on to the next
block. This prevents request merging in block layer.

Add a ext4_bread_batch() function that starts reads for all blocks
then optionally waits for them to complete. A similar logic is used
in ext4_find_entry(), so update that code to use the new function.
Signed-off-by: NTahsin Erdogan <tahsin@google.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

When an xattr block has a single reference, block is updated inplace
and it is reinserted to the cache. Later, a cache lookup is performed
to see whether an existing block has the same contents. This cache
lookup will most of the time return the just inserted entry so
deduplication is not achieved.

Running the following test script will produce two xattr blocks which
can be observed in "File ACL: " line of debugfs output:

  mke2fs -b 1024 -I 128 -F -O extent /dev/sdb 1G
  mount /dev/sdb /mnt/sdb

  touch /mnt/sdb/{x,y}

  setfattr -n user.1 -v aaa /mnt/sdb/x
  setfattr -n user.2 -v bbb /mnt/sdb/x

  setfattr -n user.1 -v aaa /mnt/sdb/y
  setfattr -n user.2 -v bbb /mnt/sdb/y

  debugfs -R 'stat x' /dev/sdb | cat
  debugfs -R 'stat y' /dev/sdb | cat

This patch defers the reinsertion to the cache so that we can locate
other blocks with the same contents.
Signed-off-by: NTahsin Erdogan <tahsin@google.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Reviewed-by: NAndreas Dilger <adilger@dilger.ca>

ext4_alloc_file_blocks() does not use its mode parameter. Remove it.
Signed-off-by: NTahsin Erdogan <tahsin@google.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

After commit 62d1034f53e3 ("fortify: use WARN instead of BUG for now"),
we get a warning about possible stack overflow from a memcpy that
was not strictly bounded to the size of the local variable:

    inlined from 'ext4_mb_seq_groups_show' at fs/ext4/mballoc.c:2322:2:
include/linux/string.h:309:9: error: '__builtin_memcpy': writing between 161 and 1116 bytes into a region of size 160 overflows the destination [-Werror=stringop-overflow=]

We actually had a bug here that would have been found by the warning,
but it was already fixed last year in commit 30a9d7af ("ext4: fix
stack memory corruption with 64k block size").

This replaces the fixed-length structure on the stack with a variable-length
structure, using the correct upper bound that tells the compiler that
everything is really fine here. I also change the loop count to check
for the same upper bound for consistency, but the existing code is
already correct here.

Note that while clang won't allow certain kinds of variable-length arrays
in structures, this particular instance is fine, as the array is at the
end of the structure, and the size is strictly bounded.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

The dir_nlink feature has been enabled by default for new ext4
filesystems since e2fsprogs-1.41 in 2008, and was automatically
enabled by the kernel for older ext4 filesystems since the
dir_nlink feature was added with ext4 in kernel 2.6.28+ when
the subdirectory count exceeded EXT4_LINK_MAX-1.

Automatically adding the file system features such as dir_nlink is
generally frowned upon, since it could cause the file system to not be
mountable on older kernel, thus preventing the administrator from
rolling back to an older kernel if necessary.

In this case, the administrator might also want to disable the feature
because glibc's fts_read() function does not correctly optimize
directory traversal for directories that use st_nlinks field of 1 to
indicate that the number of links in the directory are not tracked by
the file system, and could fail to traverse the full directory
hierarchy.  Fortunately, in the past ten years very few users have
complained about incomplete file system traversal by glibc's
fts_read().

This commit also changes ext4_inc_count() to allow i_nlinks to reach
the full EXT4_LINK_MAX links on the parent directory (including "."
and "..") before changing i_links_count to be 1.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196405Signed-off-by: NAndreas Dilger <adilger@dilger.ca>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

I get a static checker warning:

    fs/ext4/ext4.h:3091 ext4_set_de_type()
    error: buffer overflow 'ext4_type_by_mode' 15 <= 15

It seems unlikely that we would hit this read overflow in real life, but
it's also simple enough to make the array 16 bytes instead of 15.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

ext4_find_unwritten_pgoff() does not properly handle a situation when
starting index is in the middle of a page and blocksize < pagesize. The
following command shows the bug on filesystem with 1k blocksize:

  xfs_io -f -c "falloc 0 4k" \
            -c "pwrite 1k 1k" \
            -c "pwrite 3k 1k" \
            -c "seek -a -r 0" foo

In this example, neither lseek(fd, 1024, SEEK_HOLE) nor lseek(fd, 2048,
SEEK_DATA) will return the correct result.

Fix the problem by neglecting buffers in a page before starting offset.
Reported-by: NAndreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Signed-off-by: NJan Kara <jack@suse.cz>
CC: stable@vger.kernel.org # 3.8+