<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/arch/arm/kernel, branch v4.14.2</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm</title>
<updated>2017-11-10T01:41:39+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2017-11-10T01:41:39+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e7a7912a91cc1a274fab17f8a66b1e9dcfe00047'/>
<id>e7a7912a91cc1a274fab17f8a66b1e9dcfe00047</id>
<content type='text'>
Pull ARM fix from Russell King:
 "Last ARM fix for 4.14.

  This plugs a hole in dump_instr(), which, with certain conditions
  satisfied, can dump instructions from kernel space"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8720/1: ensure dump_instr() checks addr_limit
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull ARM fix from Russell King:
 "Last ARM fix for 4.14.

  This plugs a hole in dump_instr(), which, with certain conditions
  satisfied, can dump instructions from kernel space"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8720/1: ensure dump_instr() checks addr_limit
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: 8720/1: ensure dump_instr() checks addr_limit</title>
<updated>2017-11-06T12:00:38+00:00</updated>
<author>
<name>Mark Rutland</name>
<email>mark.rutland@arm.com</email>
</author>
<published>2017-11-02T17:44:28+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b9dd05c7002ee0ca8b676428b2268c26399b5e31'/>
<id>b9dd05c7002ee0ca8b676428b2268c26399b5e31</id>
<content type='text'>
When CONFIG_DEBUG_USER is enabled, it's possible for a user to
deliberately trigger dump_instr() with a chosen kernel address.

Let's avoid problems resulting from this by using get_user() rather than
__get_user(), ensuring that we don't erroneously access kernel memory.

So that we can use the same code to dump user instructions and kernel
instructions, the common dumping code is factored out to __dump_instr(),
with the fs manipulated appropriately in dump_instr() around calls to
this.

Signed-off-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Cc: stable@vger.kernel.org
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
When CONFIG_DEBUG_USER is enabled, it's possible for a user to
deliberately trigger dump_instr() with a chosen kernel address.

Let's avoid problems resulting from this by using get_user() rather than
__get_user(), ensuring that we don't erroneously access kernel memory.

So that we can use the same code to dump user instructions and kernel
instructions, the common dumping code is factored out to __dump_instr(),
with the fs manipulated appropriately in dump_instr() around calls to
this.

Signed-off-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Cc: stable@vger.kernel.org
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>License cleanup: add SPDX GPL-2.0 license identifier to files with no license</title>
<updated>2017-11-02T10:10:55+00:00</updated>
<author>
<name>Greg Kroah-Hartman</name>
<email>gregkh@linuxfoundation.org</email>
</author>
<published>2017-11-01T14:07:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b24413180f5600bcb3bb70fbed5cf186b60864bd'/>
<id>b24413180f5600bcb3bb70fbed5cf186b60864bd</id>
<content type='text'>
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode &amp; Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained &gt;5
   lines of source
 - File already had some variant of a license header in it (even if &lt;5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart &lt;kstewart@linuxfoundation.org&gt;
Reviewed-by: Philippe Ombredanne &lt;pombredanne@nexb.com&gt;
Reviewed-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode &amp; Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained &gt;5
   lines of source
 - File already had some variant of a license header in it (even if &lt;5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart &lt;kstewart@linuxfoundation.org&gt;
Reviewed-by: Philippe Ombredanne &lt;pombredanne@nexb.com&gt;
Reviewed-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm</title>
<updated>2017-10-20T22:20:17+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2017-10-20T22:20:17+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=9c323bff13f92832e03657cabdd70d731408d621'/>
<id>9c323bff13f92832e03657cabdd70d731408d621</id>
<content type='text'>
Pull ARM fixes from Russell King:
 "Three fixes this time around:

   - ensure sparse realises that we're building for a 32-bit arch on
     64-bit hosts.

   - use the correct instruction for semihosting on v7m (nommu) CPUs.

   - reserve address 0 to prevent the first page of memory being used on
     nommu systems"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8704/1: semihosting: use proper instruction on v7m processors
  ARM: 8701/1: fix sparse flags for build on 64bit machines
  ARM: 8700/1: nommu: always reserve address 0 away
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull ARM fixes from Russell King:
 "Three fixes this time around:

   - ensure sparse realises that we're building for a 32-bit arch on
     64-bit hosts.

   - use the correct instruction for semihosting on v7m (nommu) CPUs.

   - reserve address 0 to prevent the first page of memory being used on
     nommu systems"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8704/1: semihosting: use proper instruction on v7m processors
  ARM: 8701/1: fix sparse flags for build on 64bit machines
  ARM: 8700/1: nommu: always reserve address 0 away
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: 8704/1: semihosting: use proper instruction on v7m processors</title>
<updated>2017-10-12T10:28:29+00:00</updated>
<author>
<name>Nicolas Pitre</name>
<email>nicolas.pitre@linaro.org</email>
</author>
<published>2017-10-06T18:39:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ee3eaee6a1dafb7ed7213ec2fad22552b4d58ed1'/>
<id>ee3eaee6a1dafb7ed7213ec2fad22552b4d58ed1</id>
<content type='text'>
The svc instruction doesn't exist on v7m processors. Semihosting ops are
invoked with the bkpt instruction instead.

Signed-off-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The svc instruction doesn't exist on v7m processors. Semihosting ops are
invoked with the bkpt instruction instead.

Signed-off-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>arm/syscalls: Optimize address limit check</title>
<updated>2017-09-17T17:45:33+00:00</updated>
<author>
<name>Thomas Garnier</name>
<email>thgarnie@google.com</email>
</author>
<published>2017-09-07T15:30:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e33f8d32677fa4f4f8996ef46748f86aac81ccff'/>
<id>e33f8d32677fa4f4f8996ef46748f86aac81ccff</id>
<content type='text'>
Disable the generic address limit check in favor of an architecture
specific optimized implementation. The generic implementation using
pending work flags did not work well with ARM and alignment faults.

The address limit is checked on each syscall return path to user-mode
path as well as the irq user-mode return function. If the address limit
was changed, a function is called to report data corruption (stopping
the kernel or process based on configuration).

The address limit check has to be done before any pending work because
they can reset the address limit and the process is killed using a
SIGKILL signal. For example the lkdtm address limit check does not work
because the signal to kill the process will reset the user-mode address
limit.

Signed-off-by: Thomas Garnier &lt;thgarnie@google.com&gt;
Signed-off-by: Kees Cook &lt;keescook@chromium.org&gt;
Tested-by: Kees Cook &lt;keescook@chromium.org&gt;
Tested-by: Leonard Crestez &lt;leonard.crestez@nxp.com&gt;
Reviewed-by: Kees Cook &lt;keescook@chromium.org&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Pratyush Anand &lt;panand@redhat.com&gt;
Cc: Dave Martin &lt;Dave.Martin@arm.com&gt;
Cc: Will Drewry &lt;wad@chromium.org&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Will Deacon &lt;will.deacon@arm.com&gt;
Cc: Russell King &lt;linux@armlinux.org.uk&gt;
Cc: Andy Lutomirski &lt;luto@amacapital.net&gt;
Cc: David Howells &lt;dhowells@redhat.com&gt;
Cc: Dave Hansen &lt;dave.hansen@intel.com&gt;
Cc: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
Cc: linux-api@vger.kernel.org
Cc: Yonghong Song &lt;yhs@fb.com&gt;
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1504798247-48833-4-git-send-email-keescook@chromium.org

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Disable the generic address limit check in favor of an architecture
specific optimized implementation. The generic implementation using
pending work flags did not work well with ARM and alignment faults.

The address limit is checked on each syscall return path to user-mode
path as well as the irq user-mode return function. If the address limit
was changed, a function is called to report data corruption (stopping
the kernel or process based on configuration).

The address limit check has to be done before any pending work because
they can reset the address limit and the process is killed using a
SIGKILL signal. For example the lkdtm address limit check does not work
because the signal to kill the process will reset the user-mode address
limit.

Signed-off-by: Thomas Garnier &lt;thgarnie@google.com&gt;
Signed-off-by: Kees Cook &lt;keescook@chromium.org&gt;
Tested-by: Kees Cook &lt;keescook@chromium.org&gt;
Tested-by: Leonard Crestez &lt;leonard.crestez@nxp.com&gt;
Reviewed-by: Kees Cook &lt;keescook@chromium.org&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Pratyush Anand &lt;panand@redhat.com&gt;
Cc: Dave Martin &lt;Dave.Martin@arm.com&gt;
Cc: Will Drewry &lt;wad@chromium.org&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Will Deacon &lt;will.deacon@arm.com&gt;
Cc: Russell King &lt;linux@armlinux.org.uk&gt;
Cc: Andy Lutomirski &lt;luto@amacapital.net&gt;
Cc: David Howells &lt;dhowells@redhat.com&gt;
Cc: Dave Hansen &lt;dave.hansen@intel.com&gt;
Cc: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
Cc: linux-api@vger.kernel.org
Cc: Yonghong Song &lt;yhs@fb.com&gt;
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1504798247-48833-4-git-send-email-keescook@chromium.org

</pre>
</div>
</content>
</entry>
<entry>
<title>Revert "arm/syscalls: Check address limit on user-mode return"</title>
<updated>2017-09-17T17:45:33+00:00</updated>
<author>
<name>Thomas Garnier</name>
<email>thgarnie@google.com</email>
</author>
<published>2017-09-07T15:30:45+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=2404269bc4e77a67875c8db6667be34c9913c96e'/>
<id>2404269bc4e77a67875c8db6667be34c9913c96e</id>
<content type='text'>
This reverts commit 73ac5d6a2b6ac3ae8d1e1818f3e9946f97489bc9.

The work pending loop can call set_fs after addr_limit_user_check
removed the _TIF_FSCHECK flag. This may happen at anytime based on how
ARM handles alignment exceptions. It leads to an infinite loop condition.

After discussion, it has been agreed that the generic approach is not
tailored to the ARM architecture and any fix might not be complete. This
patch will be replaced by an architecture specific implementation. The
work flag approach will be kept for other architectures.

Reported-by: Leonard Crestez &lt;leonard.crestez@nxp.com&gt;
Signed-off-by: Thomas Garnier &lt;thgarnie@google.com&gt;
Signed-off-by: Kees Cook &lt;keescook@chromium.org&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Pratyush Anand &lt;panand@redhat.com&gt;
Cc: Dave Martin &lt;Dave.Martin@arm.com&gt;
Cc: Will Drewry &lt;wad@chromium.org&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Will Deacon &lt;will.deacon@arm.com&gt;
Cc: Russell King &lt;linux@armlinux.org.uk&gt;
Cc: Andy Lutomirski &lt;luto@amacapital.net&gt;
Cc: David Howells &lt;dhowells@redhat.com&gt;
Cc: Dave Hansen &lt;dave.hansen@intel.com&gt;
Cc: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
Cc: linux-api@vger.kernel.org
Cc: Yonghong Song &lt;yhs@fb.com&gt;
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1504798247-48833-3-git-send-email-keescook@chromium.org

</content>
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<pre>
This reverts commit 73ac5d6a2b6ac3ae8d1e1818f3e9946f97489bc9.

The work pending loop can call set_fs after addr_limit_user_check
removed the _TIF_FSCHECK flag. This may happen at anytime based on how
ARM handles alignment exceptions. It leads to an infinite loop condition.

After discussion, it has been agreed that the generic approach is not
tailored to the ARM architecture and any fix might not be complete. This
patch will be replaced by an architecture specific implementation. The
work flag approach will be kept for other architectures.

Reported-by: Leonard Crestez &lt;leonard.crestez@nxp.com&gt;
Signed-off-by: Thomas Garnier &lt;thgarnie@google.com&gt;
Signed-off-by: Kees Cook &lt;keescook@chromium.org&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Pratyush Anand &lt;panand@redhat.com&gt;
Cc: Dave Martin &lt;Dave.Martin@arm.com&gt;
Cc: Will Drewry &lt;wad@chromium.org&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Will Deacon &lt;will.deacon@arm.com&gt;
Cc: Russell King &lt;linux@armlinux.org.uk&gt;
Cc: Andy Lutomirski &lt;luto@amacapital.net&gt;
Cc: David Howells &lt;dhowells@redhat.com&gt;
Cc: Dave Hansen &lt;dave.hansen@intel.com&gt;
Cc: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
Cc: linux-api@vger.kernel.org
Cc: Yonghong Song &lt;yhs@fb.com&gt;
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1504798247-48833-3-git-send-email-keescook@chromium.org

</pre>
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</content>
</entry>
<entry>
<title>Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm</title>
<updated>2017-09-12T13:10:44+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2017-09-12T13:10:44+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=8fac2f96ab86b0e14ec4e42851e21e9b518bdc55'/>
<id>8fac2f96ab86b0e14ec4e42851e21e9b518bdc55</id>
<content type='text'>
Pull ARM updates from Russell King:
 "Low priority fixes and updates for ARM:

   - add some missing includes

   - efficiency improvements in system call entry code when tracing is
     enabled

   - ensure ARMv6+ is always built as EABI

   - export save_stack_trace_tsk()

   - fix fatal signal handling during mm fault

   - build translation table base address register from scratch

   - appropriately align the .data section to a word boundary where we
     rely on that data being word aligned"

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8691/1: Export save_stack_trace_tsk()
  ARM: 8692/1: mm: abort uaccess retries upon fatal signal
  ARM: 8690/1: lpae: build TTB control register value from scratch in v7_ttb_setup
  ARM: align .data section
  ARM: always enable AEABI for ARMv6+
  ARM: avoid saving and restoring registers unnecessarily
  ARM: move PC value into r9
  ARM: obtain thread info structure later
  ARM: use aliases for registers in entry-common
  ARM: 8689/1: scu: add missing errno include
  ARM: 8688/1: pm: add missing types include
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<pre>
Pull ARM updates from Russell King:
 "Low priority fixes and updates for ARM:

   - add some missing includes

   - efficiency improvements in system call entry code when tracing is
     enabled

   - ensure ARMv6+ is always built as EABI

   - export save_stack_trace_tsk()

   - fix fatal signal handling during mm fault

   - build translation table base address register from scratch

   - appropriately align the .data section to a word boundary where we
     rely on that data being word aligned"

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8691/1: Export save_stack_trace_tsk()
  ARM: 8692/1: mm: abort uaccess retries upon fatal signal
  ARM: 8690/1: lpae: build TTB control register value from scratch in v7_ttb_setup
  ARM: align .data section
  ARM: always enable AEABI for ARMv6+
  ARM: avoid saving and restoring registers unnecessarily
  ARM: move PC value into r9
  ARM: obtain thread info structure later
  ARM: use aliases for registers in entry-common
  ARM: 8689/1: scu: add missing errno include
  ARM: 8688/1: pm: add missing types include
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'armsoc-platforms' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc</title>
<updated>2017-09-11T03:35:46+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2017-09-11T03:35:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=7f1b9be13a7dbe8e51ea541bbcd6c47adae39c71'/>
<id>7f1b9be13a7dbe8e51ea541bbcd6c47adae39c71</id>
<content type='text'>
Pull ARM/arm64 SoC platform updates from Olof Johansson: "This branch
  contains platform updates for 32- and 64-bit ARM, including defconfig
  updates to enable new options, drivers and platforms. There are also a
  few fixes and cleanups for some existing vendors.

  Some of the things worth highlighting here are:

   - Enabling new crypt drivers on arm64 defconfig

   - QCOM IPQ8074 clocks and pinctrl drivers on arm64 defconfig

   - Debug support enabled for Renesas r8a7743

   - Various config updates for Renesas platforms (sound, USB, other
     drivers)

   - Platform support (including SMP) for TI dra762

   - OMAP cleanups: Move to use generic 8250 debug_ll, removal of stale
     DMA code"

* tag 'armsoc-platforms' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (109 commits)
  ARM: multi_v7_defconfig: make eSDHC driver built-in
  arm64: defconfig: enable rockchip graphics
  MAINTAINERS: Update Cavium ThunderX2 entry
  ARM: config: aspeed: Add I2C, VUART, LPC Snoop
  ARM: configs: aspeed: Update Aspeed G4 with VMSPLIT_2G
  ARM: s3c24xx: Fix NAND ECC mode for mini2440 board
  ARM: davinci_all_defconfig: enable tinydrm and ST7586
  arm64: defconfig: Enable QCOM IPQ8074 clock and pinctrl
  ARM: defconfig: tegra: Enable ChipIdea UDC driver
  ARM: configs: Add Tegra I2S interfaces to multi_v7_defconfig
  ARM: tegra: Add Tegra I2S interfaces to defconfig
  ARM: tegra: Update default configuration for v4.13-rc1
  MAINTAINERS: update ARM/ZTE entry
  soc: versatile: remove unnecessary static in realview_soc_probe()
  ARM: Convert to using %pOF instead of full_name
  ARM: hisi: Fix typo in comment
  ARM: multi_v7_defconfig: add CONFIG_BRCMSTB_THERMAL
  arm64: defconfig: add CONFIG_BRCMSTB_THERMAL
  arm64: defconfig: add recently added crypto drivers as modules
  arm64: defconfig: enable CONFIG_UNIPHIER_WATCHDOG
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull ARM/arm64 SoC platform updates from Olof Johansson: "This branch
  contains platform updates for 32- and 64-bit ARM, including defconfig
  updates to enable new options, drivers and platforms. There are also a
  few fixes and cleanups for some existing vendors.

  Some of the things worth highlighting here are:

   - Enabling new crypt drivers on arm64 defconfig

   - QCOM IPQ8074 clocks and pinctrl drivers on arm64 defconfig

   - Debug support enabled for Renesas r8a7743

   - Various config updates for Renesas platforms (sound, USB, other
     drivers)

   - Platform support (including SMP) for TI dra762

   - OMAP cleanups: Move to use generic 8250 debug_ll, removal of stale
     DMA code"

* tag 'armsoc-platforms' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (109 commits)
  ARM: multi_v7_defconfig: make eSDHC driver built-in
  arm64: defconfig: enable rockchip graphics
  MAINTAINERS: Update Cavium ThunderX2 entry
  ARM: config: aspeed: Add I2C, VUART, LPC Snoop
  ARM: configs: aspeed: Update Aspeed G4 with VMSPLIT_2G
  ARM: s3c24xx: Fix NAND ECC mode for mini2440 board
  ARM: davinci_all_defconfig: enable tinydrm and ST7586
  arm64: defconfig: Enable QCOM IPQ8074 clock and pinctrl
  ARM: defconfig: tegra: Enable ChipIdea UDC driver
  ARM: configs: Add Tegra I2S interfaces to multi_v7_defconfig
  ARM: tegra: Add Tegra I2S interfaces to defconfig
  ARM: tegra: Update default configuration for v4.13-rc1
  MAINTAINERS: update ARM/ZTE entry
  soc: versatile: remove unnecessary static in realview_soc_probe()
  ARM: Convert to using %pOF instead of full_name
  ARM: hisi: Fix typo in comment
  ARM: multi_v7_defconfig: add CONFIG_BRCMSTB_THERMAL
  arm64: defconfig: add CONFIG_BRCMSTB_THERMAL
  arm64: defconfig: add recently added crypto drivers as modules
  arm64: defconfig: enable CONFIG_UNIPHIER_WATCHDOG
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge branches 'fixes' and 'misc' into for-linus</title>
<updated>2017-09-09T15:34:41+00:00</updated>
<author>
<name>Russell King</name>
<email>rmk+kernel@armlinux.org.uk</email>
</author>
<published>2017-09-09T15:34:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e558bdc21ae1f0db520eccd84015e17d8a589973'/>
<id>e558bdc21ae1f0db520eccd84015e17d8a589973</id>
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</content>
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<pre>
</pre>
</div>
</content>
</entry>
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