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There are no callers of vfs_dedupe_file_range_compare, so we might as
well make it a static helper and remove the export.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Plumb in a remap flag that enables the filesystem remap handler to
shorten remapping requests for callers that can handle it. Now
copy_file_range can report partial success (in case we run up against
alignment problems, resource limits, etc.).
We also enable CAN_SHORTEN for fideduperange to maintain existing
userspace-visible behavior where xfs/btrfs shorten the dedupe range to
avoid stale post-eof data exposure.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Plumb a remap_flags argument through the vfs_dedupe_file_range_one
functions so that dedupe can take advantage of it.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Plumb a remap_flags argument through the {do,vfs}_clone_file_range
functions so that clone can take advantage of it.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Change the remap_file_range functions to take a number of bytes to
operate upon and return the number of bytes they operated on. This is a
requirement for allowing fs implementations to return short clone/dedupe
results to the user, which will enable us to obey resource limits in a
graceful manner.
A subsequent patch will enable copy_file_range to signal to the
->clone_file_range implementation that it can handle a short length,
which will be returned in the function's return value. For now the
short return is not implemented anywhere so the behavior won't change --
either copy_file_range manages to clone the entire range or it tries an
alternative.
Neither clone ioctl can take advantage of this, alas.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Extend generic_remap_file_range_prep to handle inode metadata updates
when remapping into a file. If the operation can possibly alter the
file contents, we must update the ctime and mtime and remove security
privileges, just like we do for regular file writes.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Pass the same remap flags to generic_remap_checks for consistency.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Plumb the remap flags through the filesystem from the vfs function
dispatcher all the way to the prep function to prepare for behavior
changes in subsequent patches.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Combine the clone_file_range and dedupe_file_range operations into a
single remap_file_range file operation dispatch since they're
fundamentally the same operation. The differences between the two can
be made in the prep functions.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Since we use clone_verify_area for both clone and dedupe range checks,
rename the function to make it clear that it's for both.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
The vfs_clone_file_prep is a generic function to be called by filesystem
implementations only. Rename the prefix to generic_ and make it more
clear that it applies to remap operations, not just clones.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Don't bother calling the filesystem for a zero-length dedupe request;
we can return zero and exit.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
A deduplication data corruption is exposed in XFS and btrfs. It is
caused by extending the block match range to include the partial EOF
block, but then allowing unknown data beyond EOF to be considered a
"match" to data in the destination file because the comparison is only
made to the end of the source file. This corrupts the destination file
when the source extent is shared with it.
The VFS remapping prep functions only support whole block dedupe, but
we still need to appear to support whole file dedupe correctly. Hence
if the dedupe request includes the last block of the souce file, don't
include it in the actual dedupe operation. If the rest of the range
dedupes successfully, then reject the entire request. A subsequent
patch will enable us to shorten dedupe requests correctly.
When reflinking sub-file ranges, a data corruption can occur when the
source file range includes a partial EOF block. This shares the unknown
data beyond EOF into the second file at a position inside EOF, exposing
stale data in the second file.
If the reflink request includes the last block of the souce file, only
proceed with the reflink operation if it lands at or past the
destination file's current EOF. If it lands within the destination file
EOF, reject the entire request with -EINVAL and make the caller go the
hard way. A subsequent patch will enable us to shorten reflink requests
correctly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
File range remapping, if allowed to run past the destination file's EOF,
is an optimization on a regular file write. Regular file writes that
extend the file length are subject to various constraints which are not
checked by range cloning.
This is a correctness problem because we're never allowed to touch
ranges that the page cache can't support (s_maxbytes); we're not
supposed to deal with large offsets (MAX_NON_LFS) if O_LARGEFILE isn't
set; and we must obey resource limits (RLIMIT_FSIZE).
Therefore, add these checks to the new generic_remap_checks function so
that we curtail unexpected behavior.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
If a remap caller asks us to remap to the source file's EOF and the
source file length leaves us with a zero byte request, exit early.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Move the file range checks from vfs_clone_file_prep into a separate
generic_remap_checks function so that all the checks are collected in a
central location. This forms the basis for adding more checks from
generic_write_checks that will make cloning's input checking more
consistent with write input checking.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
vfs_clone_file_prep_inodes cannot return 0 if it is asked to remap from
a zero byte file because that's what btrfs does.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
As I introduced these files, I'm willing to be the maintainer of them as
well.
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The contact point for the kernel's Code of Conduct should now be the
Code of Conduct Committee, not the full TAB. Change the email address
in the file to properly reflect this.
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There was a blank <URL> reference for how to find the Code of Conduct
Committee. Fix that up by pointing it to the correct kernel.org website
page location.
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Create a link between the Code of Conduct and the Code of Conduct
Interpretation so that people can see that they are related.
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We use the term "TAB" before defining it later in the document. Fix
that up by defining it at the first location.
Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Contributor Covenant Code of Conduct is a general document meant to
provide a set of rules for almost any open source community. Every
open-source community is unique and the Linux kernel is no exception.
Because of this, this document describes how we in the Linux kernel
community will interpret it. We also do not expect this interpretation
to be static over time, and will adjust it as needed.
This document was created with the input and feedback of the TAB as well
as many current kernel maintainers.
Co-Developed-by: Thomas Gleixner <tglx@linutronix.de>
Co-Developed-by: Olof Johansson <olof@lixom.net>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Borislav Petkov <bp@kernel.org>
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Acked-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: David Sterba <kdave@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.de>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Hans de Goede <j.w.r.degoede@gmail.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Acked-by: James Smart <james.smart@broadcom.com>
Acked-by: James Smart <jsmart2021@gmail.com>
Acked-by: Jan Kara <jack@ucw.cz>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Jiri Kosina <jikos@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Lina Iyer <ilina@codeaurora.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Matias Bjørling <mb@lightnvm.io>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Mishi Choudhary <mishi@linux.com>
Acked-by: Nikolay Borisov <n.borisov.lkml@gmail.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Acked-by: Palmer Dabbelt <palmer@dabbelt.com>
Acked-by: Paul E. McKenney <paulmck@linux.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Richard Weinberger <richard@nod.at>
Acked-by: Rik van Riel <riel@surriel.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Sean Paul <sean@poorly.run>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Shuah Khan <shuah@kernel.org>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Takashi Iwai <tiwai@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As it was originally worded, this paragraph requires maintainers to
enforce the code of conduct, or face potential repercussions. It sends
the wrong message, when really we just want maintainers to be part of
the solution and not violate the code of conduct themselves.
Removing it doesn't limit our ability to enforce the code of conduct,
and we can still encourage maintainers to help maintain high standards
for the level of discourse in their subsystem.
Signed-off-by: Chris Mason <clm@fb.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Borislav Petkov <bp@kernel.org>
Acked-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: David Sterba <kdave@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.de>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Hans de Goede <j.w.r.degoede@gmail.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Acked-by: James Smart <james.smart@broadcom.com>
Acked-by: James Smart <jsmart2021@gmail.com>
Acked-by: Jan Kara <jack@ucw.cz>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Jiri Kosina <jikos@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Lina Iyer <ilina@codeaurora.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Matias Bjørling <mb@lightnvm.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Nikolay Borisov <n.borisov.lkml@gmail.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Palmer Dabbelt <palmer@dabbelt.com>
Acked-by: Paul E. McKenney <paulmck@linux.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Richard Weinberger <richard@nod.at>
Acked-by: Rik van Riel <riel@surriel.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Shuah Khan <shuah@kernel.org>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Takashi Iwai <tiwai@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Tim Bird <tim.bird@sony.com>
Acked-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Wolfram writes:
"i2c for 4.19
Another driver bugfix and MAINTAINERS addition from I2C."
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: rcar: cleanup DMA for all kinds of failure
MAINTAINERS: Add entry for Broadcom STB I2C controller
David writes:
"Networking:
A few straggler bug fixes:
1) Fix indexing of multi-pass dumps of ipv6 addresses, from David
Ahern.
2) Revert RCU locking change for bonding netpoll, causes worse
problems than it solves.
3) pskb_trim_rcsum_slow() doesn't handle odd trim offsets, resulting
in erroneous bad hw checksum triggers with CHECKSUM_COMPLETE
devices. From Dimitris Michailidis.
4) a revert to some neighbour code changes that adjust notifications
in a way that confuses some apps."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
Revert "neighbour: force neigh_invalidate when NUD_FAILED update is from admin"
net/ipv6: Fix index counter for unicast addresses in in6_dump_addrs
net: fix pskb_trim_rcsum_slow() with odd trim offset
Revert "bond: take rcu lock in netpoll_send_skb_on_dev"
This reverts commit 8e326289e3.
This patch results in unnecessary netlink notification when one
tries to delete a neigh entry already in NUD_FAILED state. Found
this with a buggy app that tries to delete a NUD_FAILED entry
repeatedly. While the notification issue can be fixed with more
checks, adding more complexity here seems unnecessary. Also,
recent tests with other changes in the neighbour code have
shown that the INCOMPLETE and PROBE checks are good enough for
the original issue.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The loop wants to skip previously dumped addresses, so loops until
current index >= saved index. If the message fills it wants to save
the index for the next address to dump - ie., the one that did not
fit in the current message.
Currently, it is incrementing the index counter before comparing to the
saved index, and then the saved index is off by 1 - it assumes the
current address is going to fit in the message.
Change the index handling to increment only after a succesful dump.
Fixes: 502a2ffd73 ("ipv6: convert idev_list to list macros")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
DMA needs to be cleaned up not only on timeout, but on all errors where
it has been setup before.
Fixes: 73e8b05283 ("i2c: rcar: add DMA support")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Add an entry for the Broadcom STB I2C controller in the MAINTAINERS file.
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
[wsa: fixed sorting and a whitespace error]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Ingo writes:
"x86 fixes:
It's 4 misc fixes, 3 build warning fixes and 3 comment fixes.
In hindsight I'd have left out the 3 comment fixes to make the pull
request look less scary at such a late point in the cycle. :-/"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/swiotlb: Enable swiotlb for > 4GiG RAM on 32-bit kernels
x86/fpu: Fix i486 + no387 boot crash by only saving FPU registers on context switch if there is an FPU
x86/fpu: Remove second definition of fpu in __fpu__restore_sig()
x86/entry/64: Further improve paranoid_entry comments
x86/entry/32: Clear the CS high bits
x86/boot: Add -Wno-pointer-sign to KBUILD_CFLAGS
x86/time: Correct the attribute on jiffies' definition
x86/entry: Add some paranoid entry/exit CR3 handling comments
x86/percpu: Fix this_cpu_read()
x86/tsc: Force inlining of cyc2ns bits
Ingo writes:
"scheduler fixes:
Two fixes: a CFS-throttling bug fix, and an interactivity fix."
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix the min_vruntime update logic in dequeue_entity()
sched/fair: Fix throttle_list starvation with low CFS quota
Ingo writes:
"perf fixes:
Misc perf tooling fixes."
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Stop fallbacking to kallsyms for vdso symbols lookup
perf tools: Pass build flags to traceevent build
perf report: Don't crash on invalid inline debug information
perf cpu_map: Align cpu map synthesized events properly.
perf tools: Fix tracing_path_mount proper path
perf tools: Fix use of alternatives to find JDIR
perf evsel: Store ids for events with their own cpus perf_event__synthesize_event_update_cpus
perf vendor events intel: Fix wrong filter_band* values for uncore events
Revert "perf tools: Fix PMU term format max value calculation"
tools headers uapi: Sync kvm.h copy
tools arch uapi: Sync the x86 kvm.h copy
We've been getting checksum errors involving small UDP packets, usually
59B packets with 1 extra non-zero padding byte. netdev_rx_csum_fault()
has been complaining that HW is providing bad checksums. Turns out the
problem is in pskb_trim_rcsum_slow(), introduced in commit 88078d98d1
("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends").
The source of the problem is that when the bytes we are trimming start
at an odd address, as in the case of the 1 padding byte above,
skb_checksum() returns a byte-swapped value. We cannot just combine this
with skb->csum using csum_sub(). We need to use csum_block_sub() here
that takes into account the parity of the start address and handles the
swapping.
Matches existing code in __skb_postpull_rcsum() and esp_remove_trailer().
Fixes: 88078d98d1 ("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends")
Signed-off-by: Dimitris Michailidis <dmichail@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'drm-fixes-2018-10-20-1' of git://anongit.freedesktop.org/drm/drm
Dave writes:
"drm fixes for 4.19 final (part 2)
Looked like two stragglers snuck in, one very urgent the pageflipping
was missing a reference that could result in a GPF on non-i915
drivers, the other is an overflow in the sun4i dotclock calcs
resulting in a mode not getting set."
* tag 'drm-fixes-2018-10-20-1' of git://anongit.freedesktop.org/drm/drm:
drm/sun4i: Fix an ulong overflow in the dotclock driver
drm: Get ref on CRTC commit object when waiting for flip_done
The first two patches fix handling of unsigned type, and handling
of a space before an ending semi-colon.
The third patch adds a selftest to test the processing of synthetic events.
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Merge tag 'trace-v4.19-rc8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Steven writes:
"tracing: A few small fixes to synthetic events
Masami found some issues with the creation of synthetic events. The
first two patches fix handling of unsigned type, and handling of a
space before an ending semi-colon.
The third patch adds a selftest to test the processing of synthetic
events."
* tag 'trace-v4.19-rc8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
selftests: ftrace: Add synthetic event syntax testcase
tracing: Fix synthetic event to allow semicolon at end
tracing: Fix synthetic event to accept unsigned modifier
Dmitry writes:
"Input updates for 4.19-rc8
Just an addition to elan touchpad driver ACPI table."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15IGM
- Fix ulong overflow in sun4i
- Fix a serious GPF in waiting for flip_done from commit_tail().
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Merge tag 'drm-misc-fixes-2018-10-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Second pull request for v4.19:
- Fix ulong overflow in sun4i
- Fix a serious GPF in waiting for flip_done from commit_tail().
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/97d1ed42-1d99-fcc5-291e-cd1dc29a4252@linux.intel.com
Add a testcase to check the syntax and field types for
synthetic_events interface.
Link: http://lkml.kernel.org/r/153986838264.18251.16627517536956299922.stgit@devbox
Acked-by: Shuah Khan <shuah@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Fix synthetic event to allow independent semicolon at end.
The synthetic_events interface accepts a semicolon after the
last word if there is no space.
# echo "myevent u64 var;" >> synthetic_events
But if there is a space, it returns an error.
# echo "myevent u64 var ;" > synthetic_events
sh: write error: Invalid argument
This behavior is difficult for users to understand. Let's
allow the last independent semicolon too.
Link: http://lkml.kernel.org/r/153986835420.18251.2191216690677025744.stgit@devbox
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: stable@vger.kernel.org
Fixes: commit 4b147936fa ("tracing: Add support for 'synthetic' events")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Fix synthetic event to accept unsigned modifier for its field type
correctly.
Currently, synthetic_events interface returns error for "unsigned"
modifiers as below;
# echo "myevent unsigned long var" >> synthetic_events
sh: write error: Invalid argument
This is because argv_split() breaks "unsigned long" into "unsigned"
and "long", but parse_synth_field() doesn't expected it.
With this fix, synthetic_events can handle the "unsigned long"
correctly like as below;
# echo "myevent unsigned long var" >> synthetic_events
# cat synthetic_events
myevent unsigned long var
Link: http://lkml.kernel.org/r/153986832571.18251.8448135724590496531.stgit@devbox
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: stable@vger.kernel.org
Fixes: commit 4b147936fa ("tracing: Add support for 'synthetic' events")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This reverts commit 6fe9487892.
It is causing more serious regressions than the RCU warning
it is fixing.
Signed-off-by: David S. Miller <davem@davemloft.net>
Here are a small number of last-minute USB driver fixes
Included here are:
- spectre fix for usb storage gadgets
- xhci fixes
- cdc-acm fixes
- usbip fixes for reported problems
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
I wrote:
"USB fixes for 4.19-final
Here are a small number of last-minute USB driver fixes
Included here are:
- spectre fix for usb storage gadgets
- xhci fixes
- cdc-acm fixes
- usbip fixes for reported problems
All of these have been in linux-next with no reported issues."
* tag 'usb-4.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: gadget: storage: Fix Spectre v1 vulnerability
USB: fix the usbfs flag sanitization for control transfers
usb: xhci: pci: Enable Intel USB role mux on Apollo Lake platforms
usb: roles: intel_xhci: Fix Unbalanced pm_runtime_enable
cdc-acm: correct counting of UART states in serial state notification
cdc-acm: do not reset notification buffer index upon urb unlinking
cdc-acm: fix race between reset and control messaging
usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in vhci_hub_control()
selftests: usbip: add wait after attach and before checking port status
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Merge tag 'for-linus-20181019' of git://git.kernel.dk/linux-block
Jens writes:
"Block fixes for 4.19-final
Two small fixes that should go into this release."
* tag 'for-linus-20181019' of git://git.kernel.dk/linux-block:
block: don't deal with discard limit in blkdev_issue_discard()
nvme: remove ns sibling before clearing path
The calculated ideal rate can easily overflow an unsigned long, thus
making the best div selection buggy as soon as no ideal match is found
before the overflow occurs.
Fixes: 4731a72df2 ("drm/sun4i: request exact rates to our parents")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181018100250.12565-1-boris.brezillon@bootlin.com
David writes:
"Networking
1) Fix gro_cells leak in xfrm layer, from Li RongQing.
2) BPF selftests change RLIMIT_MEMLOCK blindly, don't do that. From
Eric Dumazet.
3) AF_XDP calls synchronize_net() under RCU lock, fix from Björn
Töpel.
4) Out of bounds packet access in _decode_session6(), from Alexei
Starovoitov.
5) Several ethtool bugs, where we copy a struct into the kernel twice
and our validations of the values in the first copy can be
invalidated by the second copy due to asynchronous updates to the
memory by the user. From Wenwen Wang.
6) Missing netlink attribute validation in cls_api, from Davide
Caratti.
7) LLC SAP sockets neet to be SOCK_RCU FREE, from Cong Wang.
8) rxrpc operates on wrong kvec, from Yue Haibing.
9) A regression was introduced by the disassosciation of route
neighbour references in rt6_probe(), causing probe for
neighbourless routes to not be properly rate limited. Fix from
Sabrina Dubroca.
10) Unsafe RCU locking in tipc, from Tung Nguyen.
11) Use after free in inet6_mc_check(), from Eric Dumazet.
12) PMTU from icmp packets should update the SCTP transport pathmtu,
from Xin Long.
13) Missing peer put on error in rxrpc, from David Howells.
14) Fix pedit in nfp driver, from Pieter Jansen van Vuuren.
15) Fix overflowing shift statement in qla3xxx driver, from Nathan
Chancellor.
16) Fix Spectre v1 in ptp code, from Gustavo A. R. Silva.
17) udp6_unicast_rcv_skb() interprets udpv6_queue_rcv_skb() return
value in an inverted manner, fix from Paolo Abeni.
18) Fix missed unresolved entries in ipmr dumps, from Nikolay
Aleksandrov.
19) Fix NAPI handling under high load, we can completely miss events
when NAPI has to loop more than one time in a cycle. From Heiner
Kallweit."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (49 commits)
ip6_tunnel: Fix encapsulation layout
tipc: fix info leak from kernel tipc_event
net: socket: fix a missing-check bug
net: sched: Fix for duplicate class dump
r8169: fix NAPI handling under high load
net: ipmr: fix unresolved entry dumps
net: mscc: ocelot: Fix comment in ocelot_vlant_wait_for_completion()
sctp: fix the data size calculation in sctp_data_size
virtio_net: avoid using netif_tx_disable() for serializing tx routine
udp6: fix encap return code for resubmitting
mlxsw: core: Fix use-after-free when flashing firmware during init
sctp: not free the new asoc when sctp_wait_for_connect returns err
sctp: fix race on sctp_id2asoc
r8169: re-enable MSI-X on RTL8168g
net: bpfilter: use get_pid_task instead of pid_task
ptp: fix Spectre v1 vulnerability
net: qla3xxx: Remove overflowing shift statement
geneve, vxlan: Don't set exceptions if skb->len < mtu
geneve, vxlan: Don't check skb_dst() twice
sctp: get pr_assoc and pr_stream all status with SCTP_PR_SCTP_ALL instead
...
David writes:
"Sparc fixes:
The main bit here is fixing how fallback system calls are handled in
the sparc vDSO.
Unfortunately, I fat fingered the commit and some perf debugging
hacks slipped into the vDSO fix, which I revert in the very next
commit."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: Revert unintended perf changes.
sparc: vDSO: Silence an uninitialized variable warning
sparc: Fix syscall fallback bugs in VDSO.
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Merge tag 'drm-fixes-2018-10-19' of git://anongit.freedesktop.org/drm/drm
Dave writes:
"drm fixes for 4.19 final
Just a last set of misc core fixes for final.
4 fixes, one use after free, one fb integration fix, one EDID fix,
and one laptop panel quirk,"
* tag 'drm-fixes-2018-10-19' of git://anongit.freedesktop.org/drm/drm:
drm/edid: VSDB yCBCr420 Deep Color mode bit definitions
drm: fix use of freed memory in drm_mode_setcrtc
drm: fb-helper: Reject all pixel format changing requests
drm/edid: Add 6 bpc quirk for BOE panel in HP Pavilion 15-n233sl
Ok, so last week I thought we had sent our final pull request for 4.19.
Well, wouldn't ya know someone went and found a couple Spectre v1 fixes
were needed :-/. So, a couple *very* small specter patches for this
(hopefully) final -rc week.
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Merge tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Doug writes:
"Really final for-rc pull request for 4.19
Ok, so last week I thought we had sent our final pull request for
4.19. Well, wouldn't ya know someone went and found a couple Spectre
v1 fixes were needed :-/. So, a couple *very* small specter patches
for this (hopefully) final -rc week."
* tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/ucma: Fix Spectre v1 vulnerability
IB/ucm: Fix Spectre v1 vulnerability
