Commit graph

916837 commits

Author SHA1 Message Date
Randy Dunlap
44a52022e7 ext2: fix empty body warnings when -Wextra is used
When EXT2_ATTR_DEBUG is not defined, modify the 2 debug macros
to use the no_printk() macro instead of <nothing>.
This fixes gcc warnings when -Wextra is used:

../fs/ext2/xattr.c:252:42: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
../fs/ext2/xattr.c:258:42: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
../fs/ext2/xattr.c:330:42: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
../fs/ext2/xattr.c:872:45: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]

I have verified that the only object code change (with gcc 7.5.0) is
the reversal of some instructions from 'cmp a,b' to 'cmp b,a'.

Link: https://lore.kernel.org/r/e18a7395-61fb-2093-18e8-ed4f8cf56248@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jan Kara <jack@suse.com>
Cc: linux-ext4@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
2020-03-23 13:01:37 +01:00
Benjamin Thiel
0e79ad863d x86/cpu: Fix a -Wmissing-prototypes warning for init_ia32_feat_ctl()
Add a missing include in order to fix -Wmissing-prototypes warning:

  arch/x86/kernel/cpu/feat_ctl.c:95:6: warning: no previous prototype for ‘init_ia32_feat_ctl’ [-Wmissing-prototypes]
     95 | void init_ia32_feat_ctl(struct cpuinfo_x86 *c)

Signed-off-by: Benjamin Thiel <b.thiel@posteo.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200323105934.26597-1-b.thiel@posteo.de
2020-03-23 12:01:59 +01:00
Deepak R Varma
4ce2881894 staging: iio: adc: ad7280a: Add comments to clarify stringified arguments
Checkpatch would flash a check message around a stringified macro
argument containing a '-' character. Add comment to indicate the
argument is legitimate and doesn't need fixing.

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Suggested-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/469bf8db1c228913e72841367182fba2168fe795.1584904896.git.mh12gx2825@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:45:20 +01:00
Deepak R Varma
4230c86228 staging: iio: adc: ad7192: Re-indent enum labels
Re-indent enum labels as per coding style guidelines. Problem
detected by checkpatch script.

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Link: https://lore.kernel.org/r/5c6bef6462d135b748f58f8c2645c60234482f52.1584904896.git.mh12gx2825@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:43:42 +01:00
John B. Wyatt IV
759411a0e0 staging: wlan-ng: Fix third argument going over 80 characters
Create a new 'status' variable to store the value of a long argument
that goes over 80 characters. The status variable is also used for
an if check. Replacing that long statement in both places makes the
code much easier to read.

Note: the status variable is assigned after a needed byte order
conversion for usbin->rxfrm.desc.status, which uses a reference.

Issue reported by checkpatch.

Suggested-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: John B. Wyatt IV <jbwyatt4@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Link: https://lore.kernel.org/r/20200321225808.2494564-1-jbwyatt4@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:43:42 +01:00
Sam Muhammed
1c31a1302c Staging: speakup: Use pr_warn() defined in <linux/printk.h>.
Dropping a user-defined pr_warn() and using the kernel
message printing functions implemented in <linux/printk.h>.

Since both have the same functionality, using the standard
kernel functions is better.

Signed-off-by: Sam Muhammed <jane.pnx9@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20200322143322.29098-1-jane.pnx9@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:41:07 +01:00
Simran Singhal
f49c5f16e9 staging: greybus: tools: Fix braces {} style
This patch fixes the check reported by checkpatch.pl
for braces {} should be used on all arms of this statement.

Signed-off-by: Simran Singhal <singhalsimran0@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20200322173045.GA24700@simran-Inspiron-5558
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:41:06 +01:00
Sergio Paracuellos
4bc0659d71 staging: mt7621-pci: avoid to set 'iomem_resource' addresses
Setting up kernel resource 'iomem_resource' for PCI with
addresses parsed from device tree gots into a conflict within
the usb xhci driver:

xhci-mtk 1e1c0000.xhci: can't request region for resource [mem 0x1e1c0000-0x1e1c0fff]
xhci-mtk: probe of 1e1c0000.xhci failed with error -16

Don't assign it and maintain the default addresses for this
resource seems to fix the problem. Checking legacy driver it
is being only  setting the 'ioport_resource'.

Fixes: 09dd629eea ("staging: mt7621-pci: fix io space and properly set resource limits")
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200322072128.4454-1-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:41:02 +01:00
Soumyajit Deb
30c826bf1d staging: hp100: Remove space after * in pointer declarations
Remove space after * in pointer declaration to improve code readability
and to adhere to the standard coding style.
Reported by checkpatch.pl

Signed-off-by: Soumyajit Deb <debsoumyajit100@gmail.com>
Link: https://lore.kernel.org/r/20200323054836.48816-3-debsoumyajit100@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:41:02 +01:00
Sam Muhammed
bb351cf437 Staging: hp: Use netdev_warn().
This replaces printk(KERN_WARNING ..) with netdev_warn(),
as the use of printk() isn't preferred when
a struct net_device is available.

Signed-off-by: Sam Muhammed <jane.pnx9@gmail.com>
Acked-by: Julia Lawall <julia.lawall@inria.fr>
Link: https://lore.kernel.org/r/20200322115051.2767-1-jane.pnx9@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:41:02 +01:00
Larry Finger
38ef48f7d4 staging: rtl8188eu: Add ASUS USB-N10 Nano B1 to device table
The ASUS USB-N10 Nano B1 has been reported as a new RTL8188EU device.
Add it to the device tables.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-by: kovi <zraetn@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200321180011.26153-1-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:32:43 +01:00
Sergio Paracuellos
9791ca0dcb staging: mt7621-pci-phy: re-do 'xtal_mode' detection
Detection of the Xtal mode is using magic numbers that
can be avoided using properly some definitions and a more
accurate variable name from 'reg' into 'xtal_mode'. This
increase readability.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200321133624.31388-4-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:32:43 +01:00
Sergio Paracuellos
1a4bcfa602 staging: mt7621-pci-phy: use builtin_platform_driver()
Macro builtin_platform_driver can be used for builtin drivers
that don't do anything in driver init. So, use the macro
builtin_platform_driver and remove some boilerplate code.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200321133624.31388-3-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:32:42 +01:00
Sergio Paracuellos
3856f4e652 staging: mt7621-pci: use builtin_platform_driver()
Macro builtin_platform_driver can be used for builtin drivers
that don't do anything in driver init. So, use the macro
builtin_platform_driver and remove some boilerplate code.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200321133624.31388-1-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 11:32:42 +01:00
Mauro Carvalho Chehab
692b65c84f i2c: fix a doc warning
Don't let non-letters inside a literal block without escaping it, as
the toolchain would mis-interpret it:

./include/linux/i2c.h:518: WARNING: Inline strong start-string without end-string.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-03-23 11:17:22 +01:00
Sungbo Eo
deeabb4c13 ARM: dts: oxnas: Fix clear-mask property
Disable all rps-irq interrupts during driver initialization to prevent
an accidental interrupt on GIC.

Fixes: 84316f4ef1 ("ARM: boot: dts: Add Oxford Semiconductor OX810SE dtsi")
Fixes: 38d4a53733 ("ARM: dts: Add support for OX820 and Pogoplug V3")
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2020-03-23 09:34:09 +01:00
韩科才
34ce29774d rtc: pm8xxx: clear alarm register when alarm is not enabled
Clear alarm register when alarm is not enabled otherwise the consumer
may still start alarm timer if it find the alarm register is not zero.

Signed-off-by: hankecai <hankecai@vivo.com>
Link: https://lore.kernel.org/r/APoAZgAaCEiRpKG6PlzreaqE.1.1584791417367.Hmail.hankecai@vivo.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-03-23 09:27:17 +01:00
Uwe Kleine-König
4828a82e29 rtc: omap: drop unused dt-bindings header
The definitons in the dt-binding's gpio header only contains some
constants to be used in device trees. It is not relevant for rtc-omap
(as the gpio API hides the details) and in fact unused so it can just be
dropped.

Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Link: https://lore.kernel.org/r/20200321203737.29850-1-uwe@kleine-koenig.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-03-23 09:27:17 +01:00
Keyur Patel
6e7af45102 rtc: bd70528: Avoid double error messaging when IRQ absent
Since the commit 7723f4c ("driver core: platform: Add an error message
to platform_get_irq*()") platform_get_irq() started issuing an error message.
Thus, there is no need to have the same in the driver.

Signed-off-by: Keyur Patel <iamkeyur96@gmail.com>
Link: https://lore.kernel.org/r/20200321180838.12729-1-iamkeyur96@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-03-23 09:27:17 +01:00
Corentin Labbe
c05a31f4d1 rtc: max8907: add missing select REGMAP_IRQ
I have hit the following build error:
armv7a-hardfloat-linux-gnueabi-ld: drivers/rtc/rtc-max8907.o: in function `max8907_rtc_probe':
rtc-max8907.c:(.text+0x400): undefined reference to `regmap_irq_get_virq'

max8907 should select REGMAP_IRQ

Fixes: 94c01ab6d7 ("rtc: add MAX8907 RTC driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Link: https://lore.kernel.org/r/1584545209-20433-1-git-send-email-clabbe@baylibre.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-03-23 09:27:16 +01:00
Peng Ma
929a327048 rtc: fsl-ftm-alarm: enable acpi support
This patch enables ACPI support in Rtc Flex timer driver.

Signed-off-by: Peng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20200318025354.6447-1-peng.ma@nxp.com
Link: https://lore.kernel.org/r/20200323072956.38263-1-peng.ma@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-03-23 09:26:47 +01:00
Anshuman Khandual
31a9122058 x86/mm: Drop pud_mknotpresent()
There is an inconsistency between PMD and PUD-based THP page table helpers
like the following, as pud_present() does not test for _PAGE_PSE.

pmd_present(pmd_mknotpresent(pmd)) : True
pud_present(pud_mknotpresent(pud)) : False

Drop pud_mknotpresent() as there are no current users. If/when needed
back later, pud_present() will also have to be fixed to accommodate
_PAGE_PSE.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Baoquan He <bhe@redhat.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Link: https://lkml.kernel.org/r/1584925542-13034-1-git-send-email-anshuman.khandual@arm.com
2020-03-23 09:11:48 +01:00
Greg Kroah-Hartman
d2e971d884 Merge 5.6-rc7 into usb-next
We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 08:04:08 +01:00
Greg Kroah-Hartman
cbf580ff09 Merge 5.6-rc7 into tty-next
We need the tty fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 08:02:55 +01:00
Greg Kroah-Hartman
6203da9803 Merge 5.6-rc7 into staging-next
We need the staging/iio fixes in here as well

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 08:01:20 +01:00
Greg Kroah-Hartman
baca54d956 Merge 5.6-rc7 into char-misc-next
We need the char/misc driver fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23 07:59:38 +01:00
Dmitry Osipenko
6697255f23 dmaengine: tegra-apb: Improve DMA synchronization
Boot CPU0 always handles DMA interrupts and under some rare circumstances
it could stuck in uninterruptible state for a significant time (like in a
case of KASAN + NFS root). In this case sibling CPU, which waits for DMA
transfer completion, will get a DMA transfer timeout. In order to handle
this rare condition, interrupt status needs to be polled until interrupt
is handled.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200319212321.3297-2-digetx@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 12:06:24 +05:30
Dmitry Osipenko
6de88ea4ff dmaengine: tegra-apb: Don't save/restore IRQ flags in interrupt handler
The interrupt is already disabled while interrupt handler is running, and
thus, there is no need to save/restore the IRQ flags within the spinlock.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200319212321.3297-1-digetx@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 12:06:24 +05:30
YueHaibing
a48d44c800 dmaengine: tegra-apb: mark PM functions as __maybe_unused
When CONFIG_PM is disabled, gcc warning this:

drivers/dma/tegra20-apb-dma.c:1587:12: warning: 'tegra_dma_runtime_resume' defined but not used [-Wunused-function]
drivers/dma/tegra20-apb-dma.c:1578:12: warning: 'tegra_dma_runtime_suspend' defined but not used [-Wunused-function]

Make it as __maybe_unused to fix the warnings,
also remove unneeded function declarations.

Fixes: ec8a158678 ("dma: tegra: add dmaengine based dma driver")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20200320071337.59756-1-yuehaibing@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 11:56:33 +05:30
Christophe JAILLET
018af9be3d dmaengine: ti: k3-udma-glue: Fix an error handling path in 'k3_udma_glue_cfg_rx_flow()'
All but one error handling paths in the 'k3_udma_glue_cfg_rx_flow()'
function 'goto err' and call 'k3_udma_glue_release_rx_flow()'.

This not correct because this function has a 'channel->flows_ready--;' at
the end, but 'flows_ready' has not been incremented here, when we branch to
the error handling path.

In order to keep a correct value in 'flows_ready', un-roll
'k3_udma_glue_release_rx_flow()', simplify it, add some labels and branch
at the correct places when an error is detected.

Doing so, we also NULLify 'flow->udma_rflow' in a path that was lacking it.

Fixes: d702419134 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine user")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200318191209.1267-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 11:48:34 +05:30
Colin Ian King
1986f03b2a dmaengine: fix spelling mistake "exceds" -> "exceeds"
There are a couple of spelling mistakes in dev_err error messages.
Fix them.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200316091653.110984-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 11:39:49 +05:30
Zhou Wang
01c4df39a2 MAINTAINERS: Add maintainer for HiSilicon DMA engine driver
Add myself as the maintainer of HiSilicon DMA engine driver.

Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Link: https://lore.kernel.org/r/1584062624-196854-1-git-send-email-wangzhou1@hisilicon.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 11:38:49 +05:30
Zhenfang Wang
d0f19a48a1 dmaengine: sprd: Set request pending flag when DMA controller is active
On new Spreadtrum platforms, when the CPU enters idle, it will close
the DMA controllers' clock to save power if the DMA controller is not
busy. Moreover the DMA controller's busy signal depends on the DMA
enable flag and the request pending flag.

When DMA controller starts to transfer data, which means we already
set the DMA enable flag, but now we should also set the request pending
flag, in case the DMA clock will be closed accidentally if the CPU
can not detect the DMA controller's busy signal.

Signed-off-by: Zhenfang Wang <zhenfang.wang@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Link: https://lore.kernel.org/r/02adbe4364ec436ec2c5bc8fd2386bab98edd884.1584019223.git.baolin.wang7@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 11:38:24 +05:30
Dave Jiang
988aad2f11 dmaengine: idxd: fix off by one on cdev dwq refcount
The refcount check for dedicated workqueue (dwq) is off by one and allows
more than 1 user to open the char device. Fix check so only a single user
can open the device.

Fixes: 42d279f913 ("dmaengine: idxd: add char driver to expose submission portal to userland")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/158403020187.10208.14117394394540710774.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-23 11:32:06 +05:30
Chao Yu
1a67cbe141 f2fs: fix to account compressed blocks in f2fs_compressed_blocks()
por_fsstress reports inconsistent status in orphan inode, the root cause
of this is in f2fs_write_raw_pages() we decrease i_compr_blocks incorrectly
due to wrong calculation in f2fs_compressed_blocks().

So this patch exposes below two functions based on __f2fs_cluster_blocks:
- f2fs_compressed_blocks: get count of compressed blocks in compressed cluster
- f2fs_cluster_blocks: get count of valid blocks (including reserved blocks)
in compressed cluster.

Then use f2fs_compress_blocks() to get correct compressed blocks count in
f2fs_write_raw_pages().

sanity_check_inode: inode (ino=ad80) hash inconsistent i_compr_blocks:2, i_blocks:1, run fsck to fix

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-03-22 21:16:29 -07:00
Gustavo A. R. Silva
50b1203d8c f2fs: xattr.h: Replace zero-length array with flexible-array member
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-03-22 21:16:29 -07:00
Chao Yu
a4ba5dfc5c f2fs: fix to update f2fs_super_block fields under sb_lock
Fields in struct f2fs_super_block should be updated under coverage
of sb_lock, fix to adjust update_sb_metadata() for that rule.

Fixes: 04f0b2eaa3 ("f2fs: ioctl for removing a range from F2FS")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-03-22 21:16:29 -07:00
Sahitya Tummala
c84ef3c5e6 f2fs: Add a new CP flag to help fsck fix resize SPO issues
Add and set a new CP flag CP_RESIZEFS_FLAG during
online resize FS to help fsck fix the metadata mismatch
that may happen due to SPO during resize, where SB
got updated but CP data couldn't be written yet.

fsck errors -
Info: CKPT version = 6ed7bccb
        Wrong user_block_count(2233856)
[f2fs_do_mount:3365] Checkpoint is polluted

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-03-22 21:16:28 -07:00
Sahitya Tummala
6827568275 f2fs: Fix mount failure due to SPO after a successful online resize FS
Even though online resize is successfully done, a SPO immediately
after resize, still causes below error in the next mount.

[   11.294650] F2FS-fs (sda8): Wrong user_block_count: 2233856
[   11.300272] F2FS-fs (sda8): Failed to get valid F2FS checkpoint

This is because after FS metadata is updated in update_fs_metadata()
if the SBI_IS_DIRTY is not dirty, then CP will not be done to reflect
the new user_block_count.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-03-22 21:16:28 -07:00
Chao Yu
a999150f4f f2fs: use kmem_cache pool during inline xattr lookups
It's been observed that kzalloc() on lookup_all_xattrs() are called millions
of times on Android, quickly becoming the top abuser of slub memory allocator.

Use a dedicated kmem cache pool for xattr lookups to mitigate this.

Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-03-22 21:16:27 -07:00
Yilu Lin
97adda8b3a CIFS: Fix bug which the return value by asynchronous read is error
This patch is used to fix the bug in collect_uncached_read_data()
that rc is automatically converted from a signed number to an
unsigned number when the CIFS asynchronous read fails.
It will cause ctx->rc is error.

Example:
Share a directory and create a file on the Windows OS.
Mount the directory to the Linux OS using CIFS.
On the CIFS client of the Linux OS, invoke the pread interface to
deliver the read request.

The size of the read length plus offset of the read request is greater
than the maximum file size.

In this case, the CIFS server on the Windows OS returns a failure
message (for example, the return value of
smb2.nt_status is STATUS_INVALID_PARAMETER).

After receiving the response message, the CIFS client parses
smb2.nt_status to STATUS_INVALID_PARAMETER
and converts it to the Linux error code (rdata->result=-22).

Then the CIFS client invokes the collect_uncached_read_data function to
assign the value of rdata->result to rc, that is, rc=rdata->result=-22.

The type of the ctx->total_len variable is unsigned integer,
the type of the rc variable is integer, and the type of
the ctx->rc variable is ssize_t.

Therefore, during the ternary operation, the value of rc is
automatically converted to an unsigned number. The final result is
ctx->rc=4294967274. However, the expected result is ctx->rc=-22.

Signed-off-by: Yilu Lin <linyilu@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
2020-03-22 22:49:10 -05:00
Murphy Zhou
ef4a632ccc CIFS: check new file size when extending file by fallocate
xfstests generic/228 checks if fallocate respect RLIMIT_FSIZE.
After fallocate mode 0 extending enabled, we can hit this failure.
Fix this by check the new file size with vfs helper, return
error if file size is larger then RLIMIT_FSIZE(ulimit -f).

This patch has been tested by LTP/xfstests aginst samba and
Windows server.

Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
2020-03-22 22:49:10 -05:00
Steve French
8895c66f2b SMB3: Minor cleanup of protocol definitions
And add one missing define (COMPRESSION_TRANSFORM_ID) and
flag (TRANSFORM_FLAG_ENCRYPTED)

Signed-off-by: Steve French <stfrench@microsoft.com>
2020-03-22 22:49:10 -05:00
Steve French
8f23343131 SMB3: Additional compression structures
New transform header structures. See recent updates
to MS-SMB2 adding section 2.2.42.1 and 2.2.42.2

Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
2020-03-22 22:49:10 -05:00
Steve French
2fe4f62de4 SMB3: Add new compression flags
Additional compression capabilities can now be negotiated and a
new compression algorithm.  Add the flags for these.

See newly updated MS-SMB2 sections 3.1.4.4.1 and 2.2.3.1.3

Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
2020-03-22 22:49:10 -05:00
Gustavo A. R. Silva
cff2def598 cifs: smb2pdu.h: Replace zero-length array with flexible-array member
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2020-03-22 22:49:10 -05:00
Eric Biggers
dc920277f1 cifs: clear PF_MEMALLOC before exiting demultiplex thread
Leaving PF_MEMALLOC set when exiting a kthread causes it to remain set
during do_exit().  That can confuse things.  For example, if BSD process
accounting is enabled and the accounting file has FS_SYNC_FL set and is
located on an ext4 filesystem without a journal, then do_exit() can end
up calling ext4_write_inode().  That triggers the
WARN_ON_ONCE(current->flags & PF_MEMALLOC) there, as it assumes
(appropriately) that inodes aren't written when allocating memory.

This was originally reported for another kernel thread, xfsaild() [1].
cifs_demultiplex_thread() also exits with PF_MEMALLOC set, so it's
potentially subject to this same class of issue -- though I haven't been
able to reproduce the WARN_ON_ONCE() via CIFS, since unlike xfsaild(),
cifs_demultiplex_thread() is sent SIGKILL before exiting, and that
interrupts the write to the BSD process accounting file.

Either way, leaving PF_MEMALLOC set is potentially problematic.  Let's
clean this up by properly saving and restoring PF_MEMALLOC.

[1] https://lore.kernel.org/r/0000000000000e7156059f751d7b@google.com

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2020-03-22 22:49:10 -05:00
Gustavo A. R. Silva
266b9fecc5 cifs: cifspdu.h: Replace zero-length array with flexible-array member
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2020-03-22 22:49:10 -05:00
Steve French
ba55344f36 CIFS: Warn less noisily on default mount
The warning we print on mount about how to use less secure dialects
(when the user does not specify a version on mount) is useful
but is noisy to print on every default mount, and can be changed
to a warn_once.  Slightly updated the warning text as well to note
SMB3.1.1 which has been the default which is typically negotiated
(for a few years now) by most servers.

      "No dialect specified on mount. Default has changed to a more
       secure dialect, SMB2.1 or later (e.g. SMB3.1.1), from CIFS
       (SMB1). To use the less secure SMB1 dialect to access old
       servers which do not support SMB3.1.1 (or even SMB3 or SMB2.1)
       specify vers=1.0 on mount."

Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
2020-03-22 22:49:09 -05:00
Qiujun Huang
f2d67931fd fs/cifs: fix gcc warning in sid_to_id
fix warning [-Wunused-but-set-variable] at variable 'rc',
keeping the code readable.

Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2020-03-22 22:49:09 -05:00