commit fef912bf860e8e7e48a2bfb978a356bba743a8b7 upstream.
Update device_add_disk() to take an 'groups' argument so that
individual drivers can register a device with additional sysfs
attributes.
This avoids race condition the driver would otherwise have if these
groups were to be created with sysfs_add_groups().
Signed-off-by: Martin Wilck <martin.wilck@suse.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
We noticed that the user interface of Android devices becomes very slow
under memory pressure. This is because Android uses the zram driver on top
of the loop driver for swapping, because under memory pressure the swap
code alternates reads and writes quickly, because mq-deadline is the
default scheduler for loop devices and because mq-deadline delays writes by
five seconds for such a workload with default settings. Fix this by making
the kernel select I/O scheduler 'none' from inside add_disk() for loop
devices. This default can be overridden at any time from user space,
e.g. via a udev rule. This approach has an advantage compared to changing
the I/O scheduler from userspace from 'mq-deadline' into 'none', namely
that synchronize_rcu() does not get called.
Additionally, this patch reduces the Android boot time on my test setup
with 0.5 seconds compared to configuring the loop I/O scheduler from user
space.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Bug: 194450129
(cherry picked from commit 2112f5c1330a671fa852051d85cb9eadc05d7eb7 git://git.kernel.dk/linux-block/ for-5.15/block)
Change-Id: I6f9579b4cd2cb22fcb5c858d4f292f1870336fdd
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Afer Zram backing dev setuped, zram will be treated as a ASYNC IO
swap device, no longer SYNC IO device, because WB pages do have IO
operation on swap in, so the optimization on skiping swapcache
for fast swap device will no longer be applyed on such case.
Now we refactor this optimization, skip the swapcache by checking
SYNC IO state on each swap page via ioctl. Reuse ioctl because we
should not break the GKI.
Change-Id: If01167b7ca178370833fc6e02385bb34ef84318a
Signed-off-by: huangzq2 <huangzq2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1897414
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
In the function __zram_bvec_write, when we match that the checksum of the
current data is already in the list, we will skip the compression operation
and allocate the zram entry directly, and will not calculate the size of the
duplicate data in the storage page compression size .
In the function zram_free_page, the deduplicated data size is directly
subtracted from the stored page compression size indiscriminately, which will
inevitably lead to statistical errors, and compr_data_size will continue to
decrease, so that it will be less than 0 after a period of time. The data is
written into the structure of u64, causing the data to exceed the value.
Therefore, we add a flag to record which pages have been deduplicated, and no
longer subtract the size of these pages from compr_data_size when freeing pages.
Change-Id: Idedf4b7ddd5e2f6afb5dde8a2f8c55c4b1aec481
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
[ Upstream commit a88e03cf3d190cf46bc4063a9b7efe87590de5f4 ]
snprintf() returns the number of bytes it would have printed if there
were space. But it does not count the NUL terminator. So that means
that if "count == copied" then this has already overflowed by one
character.
This bug likely isn't super harmful in real life.
Link: https://lkml.kernel.org/r/20210916130404.GA25094@kili
Fixes: c0265342bf ("zram: introduce zram memory tracking")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
The read_from_bdev_async is not called on atomic context. So GFP_NOIO
is available rather than GFP_ATOMIC. If there were reclaimable pages
with GFP_NOIO, we can avoid allocation failure and page fault failure.
Link: https://lkml.kernel.org/r/20210908005241.28062-1-jaewon31.kim@samsung.com
Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>
Reported-by: Yong-Taek Lee <ytk.lee@samsung.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: I10deb56bbf3c1f27938aa8d093ced5e3d3dcb4ed
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
When calling fsync_bdev(), zram driver guarantees that the bdev won't be
opened by anyone, then there can't be one active fs/superblock over the
zram bdev, so replace fsync_bdev with sync_blockdev.
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Link: https://lore.kernel.org/r/20211025025426.2815424-5-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Change-Id: Ib0826c26b805e332bfa1ee72bb5873fa2dc9caca
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
The original dedup code does not handle collision from the observation
that it practically does not happen.
For additional peace of mind, use a bigger hash size for reducing the
possibility of collision even further.
Signed-off-by: Juhyung Park <qkrwngud825@gmail.com>
Change-Id: I8c8f5b623032018aeebb8953cc29328046eae9bc
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
BDI_CAP_SYNCHRONOUS_IO is only checked in the swap code, and used to
decided if ->rw_page can be used on a block device. Just check up for
the method instead. The only complication is that zram needs a second
set of block_device_operations as it can switch between modes that
actually support ->rw_page and those who don't.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Juhyung Park <qkrwngud825@gmail.com>
Change-Id: I76402462142f15e2d90cc57d346b17ded34a97f6
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
If loops are continued, bvec assignment at that point is just
increasing overhead.
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: Ic1009a92923088653ffa32968f84f30d12e50919
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Those are not worth it to writeback
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: I588b012cade5a193ca198695d37696d394933c1f
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
We potentially suffer from insufficient free blocks from the SSD,
causing slowdowns from high GC overheads as we never trim the backing device.
This is not an issue in practice because the userdata partition will be
trimmed well.
Still, let's do a whole partition discard upon registration for minor
optimization. It takes less than 60ms to trim a 4GB partition in modern
asynchronous trim designs used in UFS FTL.
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: Ib54b5142831cc8c397ff7ba5bc94c23058d80f98
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
This will be unused/superseded with upcoming commits
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: Iecdcb442713aa4ba670849ed5c5430037a045238
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Incompressible doesn't mean it'll be unused in the near future.
Rely on existing LRU eviction method to write those to the backing device.
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: Ic956c4bb0b098c80a1eaf6afe72367baba744df6
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: If349e68ff0b53c4b25dc53f170a6ea70be35f610
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: I04cc2a0685661ca04bed542a634b19fcb50cd3f4
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Change-Id: I960b4c6198ca711adab778737d90ff5ec8a09c3f
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
With deduplication enabled, the duplicated zram objects are tracked
using the zram_entry backed by a refcount. The race condition while
decrementing the refcount through zram_dedup_put() is as follows:
Say Task A and task B share the same object and thus the
zram_entry->refcount = 2.
Task A Task B
zram_dedup_put zram_dedup_put
spin_lock(&hash->lock);
entry->refcount--; (Now it is 1)
spin_unlock(&hash->lock);
spin_lock(&hash->lock);
entry->refcount--; (Now it is 0)
spin_unlock(&hash->lock);
return entry->refcount return entry->refcount
We return 0 in above steps thus leading to double free of the handle,
which is a slab object.
Change-Id: I8dd9bad27140a6e3a295905bf4411050d8eac931
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Until now, we compare just one entry with same checksum when
checking duplication since it is the simplest way to implement.
However, for the completeness, checking all the entries is better
so this patch implement to compare all the entries with same checksum.
Since this event would be rare so there would be no performance loss.
Change-Id: Ie7d61c14d127a28f5a06d85b0ca66b9fada20cbb
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: https://lore.kernel.org/patchwork/patch/787163/
Patch-mainline: linux-kernel@ Thu, 11 May 2017 22:30:29
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Benefit of deduplication is dependent on the workload so it's not
preferable to always enable. Therefore, make it optional in Kconfig
and device param. Default is 'off'. This option will be beneficial
for users who use the zram as blockdev and stores build output to it.
Change-Id: If282bb8aa15c5749859a87cf36db7eb9edb3b1ed
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: https://lore.kernel.org/patchwork/patch/787164/
Patch-mainline: linux-kernel@ Thu, 11 May 2017 22:30:52
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
This patch implements deduplication feature in zram. The purpose
of this work is naturally to save amount of memory usage by zram.
Android is one of the biggest users to use zram as swap and it's
really important to save amount of memory usage. There is a paper
that reports that duplication ratio of Android's memory content is
rather high [1]. And, there is a similar work on zswap that also
reports that experiments has shown that around 10-15% of pages
stored in zswp are duplicates and deduplicate them provides some
benefits [2].
Also, there is a different kind of workload that uses zram as blockdev
and store build outputs into it to reduce wear-out problem of real
blockdev. In this workload, deduplication hit is very high due to
temporary files and intermediate object files. Detailed analysis is
on the bottom of this description.
Anyway, if we can detect duplicated content and avoid to store duplicated
content at different memory space, we can save memory. This patch
tries to do that.
Implementation is almost simple and intuitive but I should note
one thing about implementation detail.
To check duplication, this patch uses checksum of the page and
collision of this checksum could be possible. There would be
many choices to handle this situation but this patch chooses
to allow entry with duplicated checksum to be added to the hash,
but, not to compare all entries with duplicated checksum
when checking duplication. I guess that checksum collision is quite
rare event and we don't need to pay any attention to such a case.
Therefore, I decided the most simplest way to implement the feature.
If there is a different opinion, I can accept and go that way.
Following is the result of this patch.
Test result #1 (Swap):
Android Marshmallow, emulator, x86_64, Backporting to kernel v3.18
orig_data_size: 145297408
compr_data_size: 32408125
mem_used_total: 32276480
dup_data_size: 3188134
meta_data_size: 1444272
Last two metrics added to mm_stat are related to this work.
First one, dup_data_size, is amount of saved memory by avoiding
to store duplicated page. Later one, meta_data_size, is the amount of
data structure to support deduplication. If dup > meta, we can judge
that the patch improves memory usage.
In Adnroid, we can save 5% of memory usage by this work.
Test result #2 (Blockdev):
build the kernel and store output to ext4 FS on zram
<no-dedup>
Elapsed time: 249 s
mm_stat: 430845952 191014886 196898816 0 196898816 28320 0 0 0
<dedup>
Elapsed time: 250 s
mm_stat: 430505984 190971334 148365312 0 148365312 28404 0 47287038 3945792
There is no performance degradation and save 23% memory.
Test result #3 (Blockdev):
copy android build output dir(out/host) to ext4 FS on zram
<no-dedup>
Elapsed time: out/host: 88 s
mm_stat: 8834420736 3658184579 3834208256 0 3834208256 32889 0 0 0
<dedup>
Elapsed time: out/host: 100 s
mm_stat: 8832929792 3657329322 2832015360 0 2832015360 32609 0 952568877 80880336
It shows performance degradation roughly 13% and save 24% memory. Maybe,
it is due to overhead of calculating checksum and comparison.
Test result #4 (Blockdev):
copy android build output dir(out/target/common) to ext4 FS on zram
<no-dedup>
Elapsed time: out/host: 203 s
mm_stat: 4041678848 2310355010 2346577920 0 2346582016 500 4 0 0
<dedup>
Elapsed time: out/host: 201 s
mm_stat: 4041666560 2310488276 1338150912 0 1338150912 476 0 989088794 24564336
Memory is saved by 42% and performance is the same. Even if there is overhead
of calculating checksum and comparison, large hit ratio compensate it since
hit leads to less compression attempt.
I checked the detailed reason of savings on kernel build workload and
there are some cases that deduplication happens.
1) *.cmd
Build command is usually similar in one directory so content of these file
are very similar. In my system, more than 789 lines in fs/ext4/.namei.o.cmd
and fs/ext4/.inode.o.cmd are the same in 944 and 938 lines of the file,
respectively.
2) intermediate object files
built-in.o and temporary object file have the similar contents. More than
50% of fs/ext4/ext4.o is the same with fs/ext4/built-in.o.
3) vmlinux
.tmp_vmlinux1 and .tmp_vmlinux2 and arch/x86/boo/compressed/vmlinux.bin
have the similar contents.
Android test has similar case that some of object files(.class
and .so) are similar with another ones.
(./host/linux-x86/lib/libartd.so and
./host/linux-x86-lib/libartd-comiler.so)
Anyway, benefit seems to be largely dependent on the workload so
following patch will make this feature optional. However, this feature
can help some usecases so is deserved to be merged.
[1]: MemScope: Analyzing Memory Duplication on Android Systems,
dl.acm.org/citation.cfm?id=2797023
[2]: zswap: Optimize compressed pool memory utilization,
lkml.kernel.org/r/1341407574.7551.1471584870761.JavaMail.weblogic@epwas3p2
Change-Id: I8fe80c956c33f88a6af337d50d9e210e5c35ce37
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: https://lore.kernel.org/patchwork/patch/787162/
Patch-mainline: linux-kernel@ Thu, 11 May 2017 22:30:26
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Following patch will implement deduplication functionality
in the zram and it requires an indirection layer to manage
the life cycle of zsmalloc handle. To prepare that, this patch
introduces zram_entry which can be used to manage the life-cycle
of zsmalloc handle. Many lines are changed due to rename but
core change is just simple introduction about newly data structure.
Change-Id: Ibf9912397c8c7dbcf1465550bc83a71f904e41c7
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: https://lore.kernel.org/patchwork/patch/787161/
Patch-mainline: linux-kernel@ Thu, 11 May 2017 22:30:21
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
From the beginning, the zram block device always enabled CRYPTO_LZO,
since lzo-rle is hardcoded as the fallback compression algorithm. As a
consequence, on systems where another compression algorithm is chosen
(e.g. CRYPTO_ZSTD), the lzo kernel module becomes unused, while still
having to be built/loaded.
This patch removes the hardcoded lzo-rle dependency and allows the user
to select the default compression algorithm for zram at build time. The
previous behaviour is kept, as the default algorithm is still lzo-rle.
Link: https://lkml.kernel.org/r/20201207121245.50529-1-rsalvaterra@gmail.com
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
Suggested-by: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Suggested-by: Minchan Kim <minchan@kernel.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: I4ee3321c4b194114ff04c48fa3fee696462b70e2
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
backing_dev is never used when not enable CONFIG_ZRAM_WRITEBACK and it's
introduced from writeback feature. So it's needless also affect
readability in that case.
Link: https://lkml.kernel.org/r/20210521060544.2385-1-zbestahu@gmail.com
Signed-off-by: Yue Hu <huyue2@yulong.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Change-Id: I02fc667e3c07ebeccecc6b54cc9a928f9d733ed6
commit 0d8359620d9b ("zram: support page writeback") introduced two
problems. It overwrites writeback_store's return value as kstrtol's
return value, which makes return value zero so user could see zero as
return value of write syscall even though it wrote data successfully.
It also breaks index value in the loop in that it doesn't increase the
index any longer. It means it can write only first starting block index
so user couldn't write all idle pages in the zram so lose memory saving
chance.
This patch fixes those issues.
Link: https://lkml.kernel.org/r/20210312173949.2197662-2-minchan@kernel.org
Fixes: 0d8359620d9b("zram: support page writeback")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: Amos Bianchi <amosbianchi@google.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: John Dias <joaodias@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 2766f1821600cc7562bae2128ad0b163f744c5d9)
Bug: 182850185
Signed-off-by: Amos Bianchi <amosbianchi@google.com>
Change-Id: I9836b6350727dc4fffc1cc939647235781f0a4ee
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
writeback_store's return value is overwritten by submit_bio_wait's return
value. Thus, writeback_store will return zero since there was no IO
error. In the end, write syscall from userspace will see the zero as
return value, which could make the process stall to keep trying the write
until it will succeed.
Link: https://lkml.kernel.org/r/20210312173949.2197662-1-minchan@kernel.org
Fixes: 3b82a051c101("drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: John Dias <joaodias@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 57e0076e6575a7b7cef620a0bd2ee2549ef77818)
Bug: 182850185
Signed-off-by: Amos Bianchi <amosbianchi@google.com>
Change-Id: I7cbef91b62584826192b7ebdb434675a549a9801
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
There is demand to writeback specific process pages to backing store
instead of all idles pages in the system due to storage wear out concerns
and to launching latency of apps which are most of the time idle but are
critical for resume latency.
This patch extends the writeback knob to support a specific page
writeback.
Link: https://lkml.kernel.org/r/20201020190506.3758660-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 0d8359620d9be9823b6b9b3cf2dbe006cbfec594)
Bug: 181035934
Signed-off-by: Amos Bianchi <amosbianchi@google.com>
Change-Id: I2c2ef973f66c9d780244d39a1833c4246fb28bc2
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Instead of keeping NULL terminated array switch to use ARRAY_SIZE()
which helps to further clean up.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: http://lkml.kernel.org/r/20200508100758.51644-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: Ie21e77b081a2c261370848749b83e75c3c5d67d8
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
zcomp::stream is a per-CPU pointer, pointing to struct zcomp_strm
which contains two pointers. Having struct zcomp_strm allocated
directly as per-CPU memory would avoid one additional memory
allocation and a pointer dereference. This also simplifies the
addition of a local_lock to struct zcomp_strm.
Allocate zcomp::stream directly as per-CPU memory.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20200527201119.1692513-7-bigeasy@linutronix.de
Change-Id: I1b44f7ac0584ab851d9030d09693699ddbb6c62a
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Makoto report a below KASAN error: zram does out-of-bounds read. Because
strscpy copies from source up to count bytes unconditionally. It could
cause out-of-bounds read on next object in slab.
To prevent it, use strlcpy which checks source's length automatically.
BUG: KASAN: slab-out-of-bounds in strscpy+0x68/0x154
Read of size 8 at addr ffffffc0c3495a00 by task system_server/1314
..
Call trace:
strscpy+0x68/0x154
idle_store+0xc4/0x34c
dev_attr_store+0x50/0x6c
sysfs_kf_write+0x98/0xb4
kernfs_fop_write+0x198/0x260
__vfs_write+0x10c/0x338
vfs_write+0x114/0x238
SyS_write+0xc8/0x168
__sys_trace_return+0x0/0x4
Allocated by task 1314:
__kmalloc+0x280/0x318
kernfs_fop_write+0xac/0x260
__vfs_write+0x10c/0x338
vfs_write+0x114/0x238
SyS_write+0xc8/0x168
__sys_trace_return+0x0/0x4
Freed by task 2855:
kfree+0x138/0x630
kernfs_put_open_node+0x10c/0x124
kernfs_fop_release+0xd8/0x114
__fput+0x130/0x2a4
____fput+0x1c/0x28
task_work_run+0x16c/0x1c8
do_notify_resume+0x2bc/0x107c
work_pending+0x8/0x10
The buggy address belongs to the object at ffffffc0c3495a00
which belongs to the cache kmalloc-128 of size 128
The buggy address is located 0 bytes inside of
128-byte region [ffffffc0c3495a00, ffffffc0c3495a80)
The buggy address belongs to the page:
page:ffffffbf030d2500 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0
flags: 0x4000000000010200(slab|head)
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffffffc0c3495900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffffc0c3495980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffffffc0c3495a00: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffffffc0c3495a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffffffc0c3495b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Link: http://lkml.kernel.org/r/20190319231911.145968-1-minchan@kernel.org
Cc: <stable@vger.kernel.org> [5.0]
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: Makoto Wu <makotowu@google.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Change-Id: If72705a353562deafc9b673f446b5336bbcc7554
This reverts commit 4de5afce28.
Reason for revert: revert non upstream code
Bug: 153969530
Test: memory stress test
Signed-off-by: Martin Liu <liumartin@google.com>
Change-Id: Ie02112f9bc4468506f9f8dc5b2483db7375a4893
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
This reverts commit affb421594.
Reason for revert: revert non upstream code
Bug: 153969530
Test: memory stress test
Signed-off-by: Martin Liu <liumartin@google.com>
Change-Id: I975afdc960abf7cfd16c3b700b3f1577a2dbcde9
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
This reverts commit be0c36ce98.
Reason for revert: revert non upstream code
Bug: 153969530
Test: memory stress test
Signed-off-by: Martin Liu <liumartin@google.com>
Change-Id: I65a52eae96fead55d48a70ec51f842940ddf08a7
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
This reverts commit c5247c2b7f.
Reason for revert: revert non upstream code
Bug: 153969530
Test: memory stress test
Signed-off-by: Martin Liu <liumartin@google.com>
Change-Id: Id162220a224fef52fea5ea42949c32e8de9fee66
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
This reverts commit 167417357c.
Reason for revert: revert non upstream code
Bug: 153969530
Test: memory stress test
Signed-off-by: Martin Liu <liumartin@google.com>
Change-Id: Id0751e8ffd7f4eaf601d8b9d2bd78abf399fcd97
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
To prevent any issues with persistent data, separate lzo-rle from lzo so
that it is treated as a separate algorithm, and lzo is still available.
Link: http://lkml.kernel.org/r/20190205155944.16007-3-dave.rodgman@arm.com
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Markus F.X.J. Oberhumer <markus@oberhumer.com>
Cc: Matt Sealey <matt.sealey@arm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <nitingupta910@gmail.com>
Cc: Richard Purdie <rpurdie@openedhand.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Sonny Rao <sonnyrao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Change-Id: I81e4c20bf8b5eced3de188fb994045161a8c75f8
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Merge 4.19.262 into android-4.19-stable
Changes in 4.19.262
Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
docs: update mediator information in CoC docs
ARM: fix function graph tracer and unwinder dependencies
fs: fix UAF/GPF bug in nilfs_mdt_destroy
firmware: arm_scmi: Add SCMI PM driver remove routine
dmaengine: xilinx_dma: cleanup for fetching xlnx,num-fstores property
dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API failure
ARM: dts: fix Moxa SDIO 'compatible', remove 'sdhci' misnomer
scsi: qedf: Fix a UAF bug in __qedf_probe()
net/ieee802154: fix uninit value bug in dgram_sendmsg
um: Cleanup syscall_handler_t cast in syscalls_32.h
um: Cleanup compiler warning in arch/x86/um/tls_32.c
usb: mon: make mmapped memory read only
USB: serial: ftdi_sio: fix 300 bps rate for SIO
mmc: core: Replace with already defined values for readability
mmc: core: Terminate infinite loop in SD-UHS voltage switch
rpmsg: qcom: glink: replace strncpy() with strscpy_pad()
nilfs2: fix NULL pointer dereference at nilfs_bmap_lookup_at_level()
nilfs2: fix leak of nilfs_root in case of writer thread creation failure
nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
ceph: don't truncate file in atomic_open
random: clamp credited irq bits to maximum mixed
ALSA: hda: Fix position reporting on Poulsbo
scsi: stex: Properly zero out the passthrough command structure
USB: serial: qcserial: add new usb-id for Dell branded EM7455
random: restore O_NONBLOCK support
random: avoid reading two cache lines on irq randomness
random: use expired timer rather than wq for mixing fast pool
wifi: mac80211_hwsim: avoid mac80211 warning on bad rate
Input: xpad - add supported devices as contributed on github
Input: xpad - fix wireless 360 controller breaking after suspend
ALSA: oss: Fix potential deadlock at unregistration
ALSA: rawmidi: Drop register_mutex in snd_rawmidi_free()
ALSA: usb-audio: Fix potential memory leaks
ALSA: usb-audio: Fix NULL dererence at error path
ALSA: hda/realtek: remove ALC289_FIXUP_DUAL_SPK for Dell 5530
mtd: rawnand: atmel: Unmap streaming DMA mappings
iio: dac: ad5593r: Fix i2c read protocol requirements
usb: add quirks for Lenovo OneLink+ Dock
can: kvaser_usb: Fix use of uninitialized completion
can: kvaser_usb_leaf: Fix overread with an invalid command
can: kvaser_usb_leaf: Fix TX queue out of sync after restart
can: kvaser_usb_leaf: Fix CAN state after restart
fs: dlm: fix race between test_bit() and queue_work()
fs: dlm: handle -EBUSY first in lock arg validation
HID: multitouch: Add memory barriers
quota: Check next/prev free block number after reading from quota file
regulator: qcom_rpm: Fix circular deferral regression
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
parisc: fbdev/stifb: Align graphics memory size to 4MB
riscv: Allow PROT_WRITE-only mmap()
UM: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
PCI: Sanitise firmware BAR assignments behind a PCI-PCI bridge
fbdev: smscufx: Fix use-after-free in ufx_ops_open()
btrfs: fix race between quota enable and quota rescan ioctl
riscv: fix build with binutils 2.38
nilfs2: fix use-after-free bug of struct nilfs_root
ext4: avoid crash when inline data creation follows DIO write
ext4: fix null-ptr-deref in ext4_write_info
ext4: make ext4_lazyinit_thread freezable
ext4: place buffer head allocation before handle start
livepatch: fix race between fork and KLP transition
ftrace: Properly unset FTRACE_HASH_FL_MOD
ring-buffer: Allow splice to read previous partially read pages
ring-buffer: Check pending waiters when doing wake ups as well
ring-buffer: Fix race between reset page and reading page
KVM: x86/emulator: Fix handing of POP SS to correctly set interruptibility
KVM: nVMX: Unconditionally purge queued/injected events on nested "exit"
selinux: use "grep -E" instead of "egrep"
sh: machvec: Use char[] for section boundaries
wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
wifi: mac80211: allow bw change during channel switch in mesh
bpftool: Fix a wrong type cast in btf_dumper_int
spi: mt7621: Fix an error message in mt7621_spi_probe()
wifi: rtl8xxxu: tighten bounds checking in rtl8xxxu_read_efuse()
spi: qup: add missing clk_disable_unprepare on error in spi_qup_resume()
spi: qup: add missing clk_disable_unprepare on error in spi_qup_pm_resume_runtime()
wifi: rtl8xxxu: Fix skb misuse in TX queue selection
bpf: btf: fix truncated last_member_type_id in btf_struct_resolve
wifi: rtl8xxxu: gen2: Fix mistake in path B IQ calibration
net: fs_enet: Fix wrong check in do_pd_setup
bpf: Ensure correct locking around vulnerable function find_vpid()
spi/omap100k:Fix PM disable depth imbalance in omap1_spi100k_probe
netfilter: nft_fib: Fix for rpath check with VRF devices
spi: s3c64xx: Fix large transfers with DMA
vhost/vsock: Use kvmalloc/kvfree for larger packets.
mISDN: fix use-after-free bugs in l1oip timer handlers
sctp: handle the error returned from sctp_auth_asoc_init_active_key
tcp: fix tcp_cwnd_validate() to not forget is_cwnd_limited
net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
bnx2x: fix potential memory leak in bnx2x_tpa_stop()
once: add DO_ONCE_SLOW() for sleepable contexts
net: mvpp2: fix mvpp2 debugfs leak
drm: bridge: adv7511: fix CEC power down control register offset
drm/mipi-dsi: Detach devices when removing the host
platform/chrome: fix double-free in chromeos_laptop_prepare()
platform/x86: msi-laptop: Fix old-ec check for backlight registering
platform/x86: msi-laptop: Fix resource cleanup
drm/bridge: megachips: Fix a null pointer dereference bug
mmc: au1xmmc: Fix an error handling path in au1xmmc_probe()
ASoC: eureka-tlv320: Hold reference returned from of_find_xxx API
drm/msm/dpu: index dpu_kms->hw_vbif using vbif_idx
ALSA: dmaengine: increment buffer pointer atomically
mmc: wmt-sdmmc: Fix an error handling path in wmt_mci_probe()
ASoC: wm8997: Fix PM disable depth imbalance in wm8997_probe
ASoC: wm5110: Fix PM disable depth imbalance in wm5110_probe
ASoC: wm5102: Fix PM disable depth imbalance in wm5102_probe
memory: of: Fix refcount leak bug in of_get_ddr_timings()
soc: qcom: smsm: Fix refcount leak bugs in qcom_smsm_probe()
soc: qcom: smem_state: Add refcounting for the 'state->of_node'
ARM: dts: turris-omnia: Fix mpp26 pin name and comment
ARM: dts: kirkwood: lsxl: fix serial line
ARM: dts: kirkwood: lsxl: remove first ethernet port
ARM: dts: exynos: correct s5k6a3 reset polarity on Midas family
ARM: Drop CMDLINE_* dependency on ATAGS
ARM: dts: exynos: fix polarity of VBUS GPIO of Origen
iio: adc: at91-sama5d2_adc: fix AT91_SAMA5D2_MR_TRACKTIM_MAX
iio: adc: at91-sama5d2_adc: check return status for pressure and touch
iio: inkern: only release the device node when done with it
iio: ABI: Fix wrong format of differential capacitance channel ABI.
clk: oxnas: Hold reference returned by of_get_parent()
clk: berlin: Add of_node_put() for of_get_parent()
clk: tegra: Fix refcount leak in tegra210_clock_init
clk: tegra: Fix refcount leak in tegra114_clock_init
clk: tegra20: Fix refcount leak in tegra20_clock_init
HSI: omap_ssi: Fix refcount leak in ssi_probe
HSI: omap_ssi_port: Fix dma_map_sg error check
media: exynos4-is: fimc-is: Add of_node_put() when breaking out of loop
tty: xilinx_uartps: Fix the ignore_status
media: xilinx: vipp: Fix refcount leak in xvip_graph_dma_init
RDMA/rxe: Fix "kernel NULL pointer dereference" error
RDMA/rxe: Fix the error caused by qp->sk
dyndbg: fix module.dyndbg handling
dyndbg: let query-modname override actual module name
mtd: devices: docg3: check the return value of devm_ioremap() in the probe
ata: fix ata_id_sense_reporting_enabled() and ata_id_has_sense_reporting()
ata: fix ata_id_has_devslp()
ata: fix ata_id_has_ncq_autosense()
ata: fix ata_id_has_dipm()
md/raid5: Ensure stripe_fill happens on non-read IO with journal
xhci: Don't show warning for reinit on known broken suspend
usb: gadget: function: fix dangling pnp_string in f_printer.c
drivers: serial: jsm: fix some leaks in probe
phy: qualcomm: call clk_disable_unprepare in the error handling
staging: vt6655: fix some erroneous memory clean-up loops
firmware: google: Test spinlock on panic path to avoid lockups
serial: 8250: Fix restoring termios speed after suspend
fsi: core: Check error number after calling ida_simple_get
mfd: intel_soc_pmic: Fix an error handling path in intel_soc_pmic_i2c_probe()
mfd: fsl-imx25: Fix an error handling path in mx25_tsadc_setup_irq()
mfd: lp8788: Fix an error handling path in lp8788_probe()
mfd: lp8788: Fix an error handling path in lp8788_irq_init() and lp8788_irq_init()
mfd: sm501: Add check for platform_driver_register()
dmaengine: ioat: stop mod_timer from resurrecting deleted timer in __cleanup()
spmi: pmic-arb: correct duplicate APID to PPID mapping logic
clk: bcm2835: fix bcm2835_clock_rate_from_divisor declaration
clk: ti: dra7-atl: Fix reference leak in of_dra7_atl_clk_probe
mailbox: bcm-ferxrm-mailbox: Fix error check for dma_map_sg
powerpc/math_emu/efp: Include module.h
powerpc/sysdev/fsl_msi: Add missing of_node_put()
powerpc/pci_dn: Add missing of_node_put()
powerpc/powernv: add missing of_node_put() in opal_export_attrs()
x86/hyperv: Fix 'struct hv_enlightened_vmcs' definition
powerpc/64s: Fix GENERIC_CPU build flags for PPC970 / G5
powerpc: Fix SPE Power ISA properties for e500v1 platforms
iommu/omap: Fix buffer overflow in debugfs
iommu/iova: Fix module config properly
crypto: cavium - prevent integer overflow loading firmware
f2fs: fix race condition on setting FI_NO_EXTENT flag
ACPI: video: Add Toshiba Satellite/Portege Z830 quirk
MIPS: BCM47XX: Cast memcmp() of function to (void *)
powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
NFSD: Return nfserr_serverfault if splice_ok but buf->pages have data
wifi: brcmfmac: fix invalid address access when enabling SCAN log level
openvswitch: Fix double reporting of drops in dropwatch
openvswitch: Fix overreporting of drops in dropwatch
tcp: annotate data-race around tcp_md5sig_pool_populated
wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()
xfrm: Update ipcomp_scratches with NULL when freed
wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit()
Bluetooth: L2CAP: initialize delayed works at l2cap_chan_create()
Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
can: bcm: check the result of can_send() in bcm_can_tx()
wifi: rt2x00: don't run Rt5592 IQ calibration on MT7620
wifi: rt2x00: set correct TX_SW_CFG1 MAC register for MT7620
wifi: rt2x00: set SoC wmac clock register
wifi: rt2x00: correctly set BBP register 86 for MT7620
net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory
Bluetooth: L2CAP: Fix user-after-free
r8152: Rate limit overflow messages
drm: Use size_t type for len variable in drm_copy_field()
drm: Prevent drm_copy_field() to attempt copying a NULL pointer
drm/amd/display: fix overflow on MIN_I64 definition
drm/vc4: vec: Fix timings for VEC modes
drm: panel-orientation-quirks: Add quirk for Anbernic Win600
platform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading
drm/amdgpu: fix initial connector audio value
ARM: dts: imx7d-sdb: config the max pressure for tsc2046
ARM: dts: imx6q: add missing properties for sram
ARM: dts: imx6dl: add missing properties for sram
ARM: dts: imx6qp: add missing properties for sram
ARM: dts: imx6sl: add missing properties for sram
ARM: dts: imx6sll: add missing properties for sram
ARM: dts: imx6sx: add missing properties for sram
media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
scsi: 3w-9xxx: Avoid disabling device if failing to enable it
nbd: Fix hung when signal interrupts nbd_start_device_ioctl()
power: supply: adp5061: fix out-of-bounds read in adp5061_get_chg_type()
staging: vt6655: fix potential memory leak
ata: libahci_platform: Sanity check the DT child nodes number
HID: roccat: Fix use-after-free in roccat_read()
md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d
usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()
usb: musb: Fix musb_gadget.c rxstate overflow bug
Revert "usb: storage: Add quirk for Samsung Fit flash"
nvme: copy firmware_rev on each init
usb: idmouse: fix an uninit-value in idmouse_open
clk: bcm2835: Make peripheral PLLC critical
perf intel-pt: Fix segfault in intel_pt_print_info() with uClibc
net: ieee802154: return -EINVAL for unknown addr type
net/ieee802154: don't warn zero-sized raw_sendmsg()
ext4: continue to expand file system when the target size doesn't reach
md: Replace snprintf with scnprintf
efi: libstub: drop pointless get_memory_map() call
inet: fully convert sk->sk_rx_dst to RCU rules
thermal: intel_powerclamp: Use first online CPU as control_cpu
gcov: support GCC 12.1 and newer compilers
Linux 4.19.262
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If70223b939e3710c4fbc4f7cc522f07d4b4ffd45
[ Upstream commit 1de7c3cf48fc41cd95adb12bd1ea9033a917798a ]
syzbot reported hung task [1]. The following program is a simplified
version of the reproducer:
int main(void)
{
int sv[2], fd;
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) < 0)
return 1;
if ((fd = open("/dev/nbd0", 0)) < 0)
return 1;
if (ioctl(fd, NBD_SET_SIZE_BLOCKS, 0x81) < 0)
return 1;
if (ioctl(fd, NBD_SET_SOCK, sv[0]) < 0)
return 1;
if (ioctl(fd, NBD_DO_IT) < 0)
return 1;
return 0;
}
When signal interrupt nbd_start_device_ioctl() waiting the condition
atomic_read(&config->recv_threads) == 0, the task can hung because it
waits the completion of the inflight IOs.
This patch fixes the issue by clearing queue, not just shutdown, when
signal interrupt nbd_start_device_ioctl().
Link: https://syzkaller.appspot.com/bug?id=7d89a3ffacd2b83fdd39549bc4d8e0a89ef21239 [1]
Reported-by: syzbot+38e6c55d4969a14c1534@syzkaller.appspotmail.com
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/20220907163502.577561-1-syoshida@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
* aosp/android-4.19-stable:
Revert "xhci: Add grace period after xHC start to prevent premature runtime suspend."
Revert "USB: core: Prevent nested device-reset calls"
Revert "mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse"
Revert "sched/deadline: Fix priority inheritance with multiple scheduling classes"
Revert "kernel/sched: Remove dl_boosted flag comment"
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
Linux 4.19.259
tracefs: Only clobber mode/uid/gid on remount if asked
net: dp83822: disable rx error interrupt
mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()
usb: storage: Add ASUS <0x0b05:0x1932> to IGNORE_UAS
platform/x86: acer-wmi: Acer Aspire One AOD270/Packard Bell Dot keymap fixes
perf/arm_pmu_platform: fix tests for platform_get_irq() failure
Input: iforce - add support for Boeder Force Feedback Wheel
ieee802154: cc2520: add rc code in cc2520_tx()
tg3: Disable tg3 device on system reboot to avoid triggering AER
HID: ishtp-hid-clientHID: ishtp-hid-client: Fix comment typo
drm/msm/rd: Fix FIFO-full deadlock
Linux 4.19.258
SUNRPC: use _bh spinlocking on ->transport_lock
MIPS: loongson32: ls1c: Fix hang during startup
x86/nospec: Fix i386 RSB stuffing
usb: dwc3: qcom: fix use-after-free on runtime-PM wakeup
USB: serial: ch341: fix disabled rx timer on older devices
USB: serial: ch341: fix lost character on LCR updates
usb: dwc3: fix PHY disable sequence
sch_sfb: Also store skb len before calling child enqueue
tcp: fix early ETIMEDOUT after spurious non-SACK RTO
RDMA/mlx5: Set local port to one when accessing counters
ipv6: sr: fix out-of-bounds read when setting HMAC data.
i40e: Fix kernel crash during module removal
tipc: fix shift wrapping bug in map_get()
sch_sfb: Don't assume the skb is still around after enqueueing to child
netfilter: nf_conntrack_irc: Fix forged IP logic
netfilter: br_netfilter: Drop dst references before setting.
soc: brcmstb: pm-arm: Fix refcount leak and __iomem leak bugs
scsi: mpt3sas: Fix use-after-free warning
debugfs: add debugfs_lookup_and_remove()
kprobes: Prohibit probes in gate area
ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface()
ALSA: aloop: Fix random zeros in capture data when using jiffies timer
ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc()
drm/amdgpu: mmVM_L2_CNTL3 register not initialized correctly
fbdev: chipsfb: Add missing pci_disable_device() in chipsfb_pci_init()
arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level
parisc: Add runtime check to prevent PA2.0 kernels on PA1.x machines
parisc: ccio-dma: Handle kmalloc failure in ccio_init_resources()
drm/radeon: add a force flush to delay work when radeon
drm/amdgpu: Check num_gfx_rings for gfx v9_0 rb setup.
ALSA: seq: Fix data-race at module auto-loading
ALSA: seq: oss: Fix data-race for max_midi_devs access
net: mac802154: Fix a condition in the receive path
wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected
usb: gadget: mass_storage: Fix cdrom data transfers on MAC-OS
USB: core: Prevent nested device-reset calls
s390: fix nospec table alignments
s390/hugetlb: fix prepare_hugepage_range() check for 2 GB hugepages
usb-storage: Add ignore-residue quirk for NXP PN7462AU
USB: cdc-acm: Add Icom PMR F3400 support (0c26:0020)
usb: dwc2: fix wrong order of phy_power_on and phy_init
usb: typec: altmodes/displayport: correct pin assignment for UFP receptacles
USB: serial: option: add support for Cinterion MV32-WA/WB RmNet mode
USB: serial: option: add Quectel EM060K modem
USB: serial: option: add support for OPPO R11 diag port
USB: serial: cp210x: add Decagon UCA device id
xhci: Add grace period after xHC start to prevent premature runtime suspend.
thunderbolt: Use the actual buffer in tb_async_error()
hwmon: (gpio-fan) Fix array out of bounds access
Input: rk805-pwrkey - fix module autoloading
clk: core: Fix runtime PM sequence in clk_core_unprepare()
Revert "clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops"
clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops
drm/i915/reg: Fix spelling mistake "Unsupport" -> "Unsupported"
binder: fix UAF of ref->proc caused by race condition
USB: serial: ftdi_sio: add Omron CS1W-CIF31 device id
vt: Clear selection before changing the font
staging: rtl8712: fix use after free bugs
serial: fsl_lpuart: RS485 RTS polariy is inverse
net/smc: Remove redundant refcount increase
Revert "sch_cake: Return __NET_XMIT_STOLEN when consuming enqueued skb"
tcp: annotate data-race around challenge_timestamp
sch_cake: Return __NET_XMIT_STOLEN when consuming enqueued skb
kcm: fix strp_init() order and cleanup
ethernet: rocker: fix sleep in atomic context bug in neigh_timer_handler
Revert "xhci: turn off port power in shutdown"
wifi: cfg80211: debugfs: fix return type in ht40allow_map_read()
ieee802154/adf7242: defer destroy_workqueue call
platform/x86: pmc_atom: Fix SLP_TYPx bitfield mask
drm/msm/dsi: Fix number of regulators for msm8996_dsi_cfg
drm/msm/dsi: fix the inconsistent indenting
net: dp83822: disable false carrier interrupt
Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"
fs: only do a memory barrier for the first set_buffer_uptodate()
wifi: iwlegacy: 4965: corrected fix for potential off-by-one overflow in il4965_rs_fill_link_cmd()
efi: capsule-loader: Fix use-after-free in efi_capsule_write
driver core: Don't probe devices after bus_type.match() probe deferral
Linux 4.19.257
net: neigh: don't call kfree_skb() under spin_lock_irqsave()
kprobes: don't call disarm_kprobe() for disabled kprobes
netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y
s390/hypfs: avoid error message under KVM
neigh: fix possible DoS due to net iface start/stop loop
drm/amd/display: clear optc underflow before turn off odm clock
mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse
ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead
fbdev: fb_pm2fb: Avoid potential divide by zero error
HID: hidraw: fix memory leak in hidraw_release()
media: pvrusb2: fix memory leak in pvr_probe
HID: steam: Prevent NULL pointer dereference in steam_{recv,send}_report
Bluetooth: L2CAP: Fix build errors in some archs
kbuild: Fix include path in scripts/Makefile.modpost
x86/bugs: Add "unknown" reporting for MMIO Stale Data
s390/mm: do not trigger write fault when vma does not allow VM_WRITE
selftests/bpf: Fix test_align verifier log patterns
bpf: Fix the off-by-two error in range markings
arm64: map FDT as RW for early_init_dt_scan()
mm: Force TLB flush for PFNMAP mappings before unlink_file_vma()
scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq
md: call __md_stop_writes in md_stop
mm/hugetlb: fix hugetlb not supporting softdirty tracking
s390: fix double free of GS and RI CBs on fork() failure
asm-generic: sections: refactor memory_intersects
loop: Check for overflow while configuring loop
x86/unwind/orc: Unwind ftrace trampolines with correct ORC entry
btrfs: check if root is readonly while setting security xattr
ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter
net: Fix a data-race around sysctl_somaxconn.
net: Fix a data-race around netdev_budget_usecs.
net: Fix a data-race around netdev_budget.
net: Fix a data-race around sysctl_net_busy_read.
net: Fix a data-race around sysctl_net_busy_poll.
net: Fix a data-race around sysctl_tstamp_allow_data.
ratelimit: Fix data-races in ___ratelimit().
net: Fix data-races around netdev_tstamp_prequeue.
net: Fix data-races around weight_p and dev_weight_[rt]x_bias.
netfilter: nft_tunnel: restrict it to netdev family
netfilter: nft_osf: restrict osf to ipv4, ipv6 and inet families
netfilter: nft_payload: do not truncate csum_offset and csum_type
netfilter: nft_payload: report ERANGE for too long offset and length
netfilter: ebtables: reject blobs that don't provide all entry points
net: ipvtap - add __init/__exit annotations to module init/exit funcs
bonding: 802.3ad: fix no transmission of LACPDUs
rose: check NULL rose_loopback_neigh->loopback
af_key: Do not call xfrm_probe_algs in parallel
xfrm: fix refcount leak in __xfrm_policy_check()
kernel/sched: Remove dl_boosted flag comment
sched/deadline: Fix priority inheritance with multiple scheduling classes
sched/deadline: Fix stale throttling on de-/boosted tasks
sched/deadline: Unthrottle PI boosted threads while enqueuing
pinctrl: amd: Don't save/restore interrupt status and wake status bits
kernel/sys_ni: add compat entry for fadvise64_64
parisc: Fix exception handler for fldw and fstw instructions
audit: fix potential double free on error path from fsnotify_add_inode_mark
Linux 4.19.256
btrfs: raid56: don't trust any cached sector in __raid56_parity_recover()
btrfs: only write the sectors in the vertical stripe which has data stripes
tracing/probes: Have kprobes and uprobes use $COMM too
tee: add overflow check in register_shm_helper()
MIPS: tlbex: Explicitly compare _PAGE_NO_EXEC against 0
video: fbdev: i740fb: Check the argument of i740_calc_vclk()
powerpc/64: Init jump labels before parse_early_param()
smb3: check xattr value length earlier
f2fs: fix to avoid use f2fs_bug_on() in f2fs_new_node_page()
ALSA: timer: Use deferred fasync helper
ALSA: core: Add async signal helpers
watchdog: export lockup_detector_reconfigure
RISC-V: Add fast call path of crash_kexec()
riscv: mmap with PROT_WRITE but no PROT_READ is invalid
mips: cavium-octeon: Fix missing of_node_put() in octeon2_usb_clocks_start
vfio: Clear the caps->buf to NULL after free
tty: serial: Fix refcount leak bug in ucc_uart.c
lib/list_debug.c: Detect uninitialized lists
ext4: avoid resizing to a partial cluster size
ext4: avoid remove directory when directory is corrupted
drivers:md:fix a potential use-after-free bug
dmaengine: sprd: Cleanup in .remove() after pm_runtime_get_sync() failed
cxl: Fix a memory leak in an error handling path
gadgetfs: ep_io - wait until IRQ finishes
clk: qcom: ipq8074: dont disable gcc_sleep_clk_src
vboxguest: Do not use devm for irq
usb: renesas: Fix refcount leak bug
usb: host: ohci-ppc-of: Fix refcount leak bug
irqchip/tegra: Fix overflow implicit truncation warnings
PCI: Add ACS quirk for Broadcom BCM5750x NICs
drm/meson: Fix refcount bugs in meson_vpu_has_available_connectors()
locking/atomic: Make test_and_*_bit() ordered on failure
gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file
igb: Add lock to avoid data race
fec: Fix timer capture timing in `fec_ptp_enable_pps()`
i40e: Fix to stop tx_timeout recovery if GLOBR fails
powerpc/pci: Fix get_phb_number() locking
netfilter: nf_tables: really skip inactive sets when allocating name
nios2: add force_successful_syscall_return()
nios2: restarts apply only to the first sigframe we build...
nios2: fix syscall restart checks
nios2: traced syscall does need to check the syscall number
nios2: don't leave NULLs in sys_call_table[]
nios2: page fault et.al. are *not* restartable syscalls...
atm: idt77252: fix use-after-free bugs caused by tst_timer
xen/xenbus: fix return type in xenbus_file_read()
NTB: ntb_tool: uninitialized heap data in tool_fn_write()
tools build: Switch to new openssl API for test-libcrypto
vsock: Set socket state back to SS_UNCONNECTED in vsock_connect_timeout()
vsock: Fix memory leak in vsock_connect()
geneve: do not use RT_TOS for IPv6 flowlabel
ACPI: property: Return type of acpi_add_nondev_subnodes() should be bool
pinctrl: qcom: msm8916: Allow CAMSS GP clocks to be muxed
pinctrl: nomadik: Fix refcount leak in nmk_pinctrl_dt_subnode_to_map
SUNRPC: Reinitialise the backchannel request buffers before reuse
NFSv4/pnfs: Fix a use-after-free bug in open
NFSv4.1: RECLAIM_COMPLETE must handle EACCES
NFSv4: Fix races in the legacy idmapper upcall
apparmor: Fix memleak in aa_simple_write_to_buffer()
apparmor: fix reference count leak in aa_pivotroot()
apparmor: fix overlapping attachment computation
apparmor: fix aa_label_asxprint return check
apparmor: Fix failed mount permission check error message
apparmor: fix absroot causing audited secids to begin with =
apparmor: fix quiet_denied for file rules
can: ems_usb: fix clang's -Wunaligned-access warning
tracing: Have filter accept "common_cpu" to be consistent
btrfs: fix lost error handling when looking up extended ref on log replay
mmc: pxamci: Fix an error handling path in pxamci_probe()
mmc: pxamci: Fix another error handling path in pxamci_probe()
ata: libata-eh: Add missing command name
rds: add missing barrier to release_refill
ALSA: info: Fix llseek return value when using callback
powerpc/ptdump: Fix display of RW pages on FSL_BOOK3E
powerpc/mm: Split dump_pagelinuxtables flag_array table
firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails
net_sched: cls_route: disallow handle of 0
net/9p: Initialize the iounit field during fid creation
Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression
Revert "net: usb: ax88179_178a needs FLAG_SEND_ZLP"
scsi: sg: Allow waiting for commands to complete on removed device
tcp: fix over estimation in sk_forced_mem_schedule()
KVM: x86: Avoid theoretical NULL pointer dereference in kvm_irq_delivery_to_apic_fast()
KVM: x86: Check lapic_in_kernel() before attempting to set a SynIC irq
KVM: Add infrastructure and macro to mark VM as bugged
btrfs: reject log replay if there is unsupported RO compat flag
net_sched: cls_route: remove from list when handle is 0
ACPI: CPPC: Do not prevent CPPC from working in the future
dm writecache: set a default MAX_WRITEBACK_JOBS
dm raid: fix address sanitizer warning in raid_status
dm raid: fix address sanitizer warning in raid_resume
intel_th: pci: Add Meteor Lake-P support
intel_th: pci: Add Raptor Lake-S PCH support
intel_th: pci: Add Raptor Lake-S CPU support
ext4: correct the misjudgment in ext4_iget_extra_inode
ext4: correct max_inline_xattr_value_size computing
ext4: fix extent status tree race in writeback error recovery path
ext4: update s_overhead_clusters in the superblock during an on-line resize
ext4: fix use-after-free in ext4_xattr_set_entry
ext4: make sure ext4_append() always allocates new block
ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h
spmi: trace: fix stack-out-of-bound access in SPMI tracing functions
x86/olpc: fix 'logical not is only applied to the left hand side'
scsi: zfcp: Fix missing auto port scan and thus missing target ports
video: fbdev: s3fb: Check the size of screen before memset_io()
video: fbdev: arkfb: Check the size of screen before memset_io()
video: fbdev: vt8623fb: Check the size of screen before memset_io()
tools/thermal: Fix possible path truncations
video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock()
x86/numa: Use cpumask_available instead of hardcoded NULL check
scripts/faddr2line: Fix vmlinux detection on arm64
genelf: Use HAVE_LIBCRYPTO_SUPPORT, not the never defined HAVE_LIBCRYPTO
powerpc/pci: Fix PHB numbering when using opal-phbid
kprobes: Forbid probing on trampoline and BPF code areas
powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address
powerpc/xive: Fix refcount leak in xive_get_max_prio
powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader
powerpc/pci: Prefer PCI domain assignment via DT 'linux,pci-domain' and alias
powerpc/32: Do not allow selection of e5500 or e6500 CPUs on PPC32
video: fbdev: sis: fix typos in SiS_GetModeID()
video: fbdev: amba-clcd: Fix refcount leak bugs
ASoC: qcom: q6dsp: Fix an off-by-one in q6adm_alloc_copp()
s390/zcore: fix race when reading from hardware system area
iommu/arm-smmu: qcom_iommu: Add of_node_put() when breaking out of loop
mfd: t7l66xb: Drop platform disable callback
kfifo: fix kfifo_to_user() return type
rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge
iommu/exynos: Handle failed IOMMU device registration properly
tty: n_gsm: fix missing corner cases in gsmld_poll()
tty: n_gsm: fix DM command
tty: n_gsm: fix wrong T1 retry count handling
vfio/ccw: Do not change FSM state in subchannel event
remoteproc: qcom: wcnss: Fix handling of IRQs
tty: n_gsm: fix race condition in gsmld_write()
tty: n_gsm: fix packet re-transmission without open control channel
tty: n_gsm: fix non flow control frames during mux flow off
profiling: fix shift too large makes kernel panic
serial: 8250_dw: Store LSR into lsr_saved_flags in dw8250_tx_wait_empty()
ASoC: mediatek: mt8173-rt5650: Fix refcount leak in mt8173_rt5650_dev_probe
ASoC: codecs: da7210: add check for i2c_add_driver
ASoC: mt6797-mt6351: Fix refcount leak in mt6797_mt6351_dev_probe
ASoC: mediatek: mt8173: Fix refcount leak in mt8173_rt5650_rt5676_dev_probe
jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted
ext4: recover csum seed of tmp_inode after migrating to extents
null_blk: fix ida error handling in null_add_dev()
RDMA/rxe: Fix error unwind in rxe_create_qp()
mm/mmap.c: fix missing call to vm_unacct_memory in mmap_region
platform/olpc: Fix uninitialized data in debugfs write
USB: serial: fix tty-port initialized comments
HID: alps: Declare U1_UNICORN_LEGACY support
mmc: cavium-thunderx: Add of_node_put() when breaking out of loop
mmc: cavium-octeon: Add of_node_put() when breaking out of loop
gpio: gpiolib-of: Fix refcount bugs in of_mm_gpiochip_add_data()
RDMA/hfi1: fix potential memory leak in setup_base_ctxt()
usb: gadget: udc: amd5536 depends on HAS_DMA
scsi: smartpqi: Fix DMA direction for RAID requests
mmc: sdhci-of-at91: fix set_uhs_signaling rewriting of MC1R
memstick/ms_block: Fix a memory leak
memstick/ms_block: Fix some incorrect memory allocation
mmc: sdhci-of-esdhc: Fix refcount leak in esdhc_signal_voltage_switch
staging: rtl8192u: Fix sleep in atomic context bug in dm_fsync_timer_callback
soundwire: bus_type: fix remove and shutdown support
clk: qcom: ipq8074: set BRANCH_HALT_DELAY flag for UBI clocks
clk: qcom: ipq8074: fix NSS port frequency tables
misc: rtsx: Fix an error handling path in rtsx_pci_probe()
usb: ohci-nxp: Fix refcount leak in ohci_hcd_nxp_probe
usb: host: Fix refcount leak in ehci_hcd_ppc_of_probe
fpga: altera-pr-ip: fix unsigned comparison with less than zero
mtd: st_spi_fsm: Add a clk_disable_unprepare() in .probe()'s error path
mtd: sm_ftl: Fix deadlock caused by cancel_work_sync in sm_release
HID: cp2112: prevent a buffer overflow in cp2112_xfer()
mtd: maps: Fix refcount leak in ap_flash_init
mtd: maps: Fix refcount leak in of_flash_probe_versatile
clk: renesas: r9a06g032: Fix UART clkgrp bitsel
dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
net: rose: fix netdev reference changes
netdevsim: Avoid allocation warnings triggered from user space
net/mlx5e: Fix the value of MLX5E_MAX_RQ_NUM_MTTS
wifi: libertas: Fix possible refcount leak in if_usb_probe()
wifi: wil6210: debugfs: fix uninitialized variable use in `wil_write_file_wmi()`
i2c: mux-gpmux: Add of_node_put() when breaking out of loop
i2c: cadence: Support PEC for SMBus block read
Bluetooth: hci_intel: Add check for platform_driver_register
can: pch_can: pch_can_error(): initialize errc before using it
can: error: specify the values of data[5..7] of CAN error frames
can: usb_8dev: do not report txerr and rxerr during bus-off
can: kvaser_usb_leaf: do not report txerr and rxerr during bus-off
can: kvaser_usb_hydra: do not report txerr and rxerr during bus-off
can: sun4i_can: do not report txerr and rxerr during bus-off
can: hi311x: do not report txerr and rxerr during bus-off
can: sja1000: do not report txerr and rxerr during bus-off
can: rcar_can: do not report txerr and rxerr during bus-off
can: pch_can: do not report txerr and rxerr during bus-off
wifi: p54: add missing parentheses in p54_flush()
wifi: p54: Fix an error handling path in p54spi_probe()
selftests: timers: clocksource-switch: fix passing errors from child
wifi: wil6210: debugfs: fix info leak in wil_write_file_wmi()
selftests: timers: valid-adjtimex: build fix for newer toolchains
fs: check FMODE_LSEEK to control internal pipe splicing
libbpf: Fix the name of a reused map
tcp: make retransmitted SKB fit into the send window
mediatek: mt76: mac80211: Fix missing of_node_put() in mt76_led_init()
media: platform: mtk-mdp: Fix mdp_ipi_comm structure alignment
crypto: hisilicon - Kunpeng916 crypto driver don't sleep when in softirq
Change-Id: I1a4bb33f07f7ac850e069a5ac664d668f42b377f
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Conflicts:
drivers/usb/dwc3/core.c
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Merge 4.19.257 into android-4.19-stable
Changes in 4.19.257
audit: fix potential double free on error path from fsnotify_add_inode_mark
parisc: Fix exception handler for fldw and fstw instructions
kernel/sys_ni: add compat entry for fadvise64_64
pinctrl: amd: Don't save/restore interrupt status and wake status bits
sched/deadline: Unthrottle PI boosted threads while enqueuing
sched/deadline: Fix stale throttling on de-/boosted tasks
sched/deadline: Fix priority inheritance with multiple scheduling classes
kernel/sched: Remove dl_boosted flag comment
xfrm: fix refcount leak in __xfrm_policy_check()
af_key: Do not call xfrm_probe_algs in parallel
rose: check NULL rose_loopback_neigh->loopback
bonding: 802.3ad: fix no transmission of LACPDUs
net: ipvtap - add __init/__exit annotations to module init/exit funcs
netfilter: ebtables: reject blobs that don't provide all entry points
netfilter: nft_payload: report ERANGE for too long offset and length
netfilter: nft_payload: do not truncate csum_offset and csum_type
netfilter: nft_osf: restrict osf to ipv4, ipv6 and inet families
netfilter: nft_tunnel: restrict it to netdev family
net: Fix data-races around weight_p and dev_weight_[rt]x_bias.
net: Fix data-races around netdev_tstamp_prequeue.
ratelimit: Fix data-races in ___ratelimit().
net: Fix a data-race around sysctl_tstamp_allow_data.
net: Fix a data-race around sysctl_net_busy_poll.
net: Fix a data-race around sysctl_net_busy_read.
net: Fix a data-race around netdev_budget.
net: Fix a data-race around netdev_budget_usecs.
net: Fix a data-race around sysctl_somaxconn.
ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter
btrfs: check if root is readonly while setting security xattr
x86/unwind/orc: Unwind ftrace trampolines with correct ORC entry
loop: Check for overflow while configuring loop
asm-generic: sections: refactor memory_intersects
s390: fix double free of GS and RI CBs on fork() failure
mm/hugetlb: fix hugetlb not supporting softdirty tracking
md: call __md_stop_writes in md_stop
scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq
mm: Force TLB flush for PFNMAP mappings before unlink_file_vma()
arm64: map FDT as RW for early_init_dt_scan()
bpf: Fix the off-by-two error in range markings
selftests/bpf: Fix test_align verifier log patterns
s390/mm: do not trigger write fault when vma does not allow VM_WRITE
x86/bugs: Add "unknown" reporting for MMIO Stale Data
kbuild: Fix include path in scripts/Makefile.modpost
Bluetooth: L2CAP: Fix build errors in some archs
HID: steam: Prevent NULL pointer dereference in steam_{recv,send}_report
media: pvrusb2: fix memory leak in pvr_probe
HID: hidraw: fix memory leak in hidraw_release()
fbdev: fb_pm2fb: Avoid potential divide by zero error
ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead
mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse
drm/amd/display: clear optc underflow before turn off odm clock
neigh: fix possible DoS due to net iface start/stop loop
s390/hypfs: avoid error message under KVM
netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y
kprobes: don't call disarm_kprobe() for disabled kprobes
net: neigh: don't call kfree_skb() under spin_lock_irqsave()
Linux 4.19.257
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Idb88277f6113c70ac63bb9d515be36f4e93972ec
