Commit Graph

6137 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
57dc19a9d6 Revert "kconfig: remove 'kvmconfig' and 'xenconfig' shorthands"
This reverts commit 17a08680ab which is
commit 9bba03d4473df0b707224d4d2067b62d1e1e2a77 upstream.

As Pavel says at Link: https://lore.kernel.org/r/20210119182837.GA18123@duo.ucw.cz
	I don't believe this is suitable for stable.

And he's right.  It is "after" 5.10.0, but we want to keep these targets
for all of the 5.10.y series.

Reported-by: Pavel Machek <pavel@ucw.cz>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-23 16:03:57 +01:00
Masahiro Yamada
17a08680ab kconfig: remove 'kvmconfig' and 'xenconfig' shorthands
[ Upstream commit 9bba03d4473df0b707224d4d2067b62d1e1e2a77 ]

Linux 5.10 is out. Remove the 'kvmconfig' and 'xenconfig' shorthands
as previously announced.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-01-19 18:27:25 +01:00
Linus Torvalds
43dee885be depmod: handle the case of /sbin/depmod without /sbin in PATH
[ Upstream commit cedd1862be7e666be87ec824dabc6a2b05618f36 ]

Commit 436e980e2ed5 ("kbuild: don't hardcode depmod path") stopped
hard-coding the path of depmod, but in the process caused trouble for
distributions that had that /sbin location, but didn't have it in the
PATH (generally because /sbin is limited to the super-user path).

Work around it for now by just adding /sbin to the end of PATH in the
depmod.sh script.

Reported-and-tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-01-12 20:18:16 +01:00
Masahiro Yamada
87c0d2ab8a kconfig: fix return value of do_error_if()
[ Upstream commit 135b4957eac43af2aedf8e2a277b9540f33c2558 ]

$(error-if,...) is expanded to an empty string. Currently, it relies on
eval_clause() returning xstrdup("") when all attempts for expansion fail,
but the correct implementation is to make do_error_if() return xstrdup("").

Fixes: 1d6272e6fe ("kconfig: add 'info', 'warning-if', and 'error-if' built-in functions")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30 11:54:01 +01:00
Dwaipayan Ray
0633094ec7 checkpatch: fix unescaped left brace
[ Upstream commit 03f4935135b9efeb780b970ba023c201f81cf4e6 ]

There is an unescaped left brace in a regex in OPEN_BRACE check.  This
throws a runtime error when checkpatch is run with --fix flag and the
OPEN_BRACE check is executed.

Fix it by escaping the left brace.

Link: https://lkml.kernel.org/r/20201115202928.81955-1-dwaipayanray1@gmail.com
Fixes: 8d1824780f ("checkpatch: add --fix option for a couple OPEN_BRACE misuses")
Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
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>
2020-12-30 11:53:56 +01:00
Mauro Carvalho Chehab
9cee260310 scripts: kernel-doc: fix parsing function-like typedefs
[ Upstream commit 7d2c6b1edf790d96e9017a0b27be2425e1af1532 ]

Changeset 6b80975c63 ("scripts: kernel-doc: fix typedef parsing")
added support for things like:

	typedef unsigned long foo();

However, it caused a regression on this prototype:

	typedef bool v4l2_check_dv_timings_fnc(const struct v4l2_dv_timings *t, void *handle);

This is only noticed after adding a patch that checks if the
kernel-doc identifier matches the typedef:

	./scripts/kernel-doc -none $(git grep '^.. kernel-doc::' Documentation/ |cut -d ' ' -f 3|sort|uniq) 2>&1|grep expecting
	include/media/v4l2-dv-timings.h:38: warning: expecting prototype for typedef v4l2_check_dv_timings_fnc. Prototype was for typedef nc instead

The problem is that, with the new parsing logic, it is not
checking for complete words at the type part.

Fix it by adding a \b at the end of each type word at the
regex.

fixes: 6b80975c63 ("scripts: kernel-doc: fix typedef parsing")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/218ff56dcb8e73755005d3fb64586eb1841a276b.1606896997.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30 11:53:33 +01:00
Andy Shevchenko
5c0aa48d04 scripts: kernel-doc: Restore anonymous enum parsing
[ Upstream commit ae5b17e464146ddb8fee744fa2150922d6072916 ]

The commit d38c8cfb05 ("scripts: kernel-doc: add support for typedef enum")
broke anonymous enum parsing. Restore it by relying on members rather than
its name.

Fixes: d38c8cfb05 ("scripts: kernel-doc: add support for typedef enum")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20201102170637.36138-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30 11:53:10 +01:00
Linus Torvalds
e6585a4939 Kbuild fixes for v5.10 (2nd)
- Move -Wcast-align to W=3, which tends to be false-positive and there
    is no tree-wide solution.
 
  - Pass -fmacro-prefix-map to KBUILD_CPPFLAGS because it is a preprocessor
    option and makes sense for .S files as well.
 
  - Disable -gdwarf-2 for Clang's integrated assembler to avoid warnings.
 
  - Disable --orphan-handling=warn for LLD 10.0.1 to avoid warnings.
 
  - Fix undesirable line breaks in *.mod files.
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Merge tag 'kbuild-fixes-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Move -Wcast-align to W=3, which tends to be false-positive and there
   is no tree-wide solution.

 - Pass -fmacro-prefix-map to KBUILD_CPPFLAGS because it is a
   preprocessor option and makes sense for .S files as well.

 - Disable -gdwarf-2 for Clang's integrated assembler to avoid warnings.

 - Disable --orphan-handling=warn for LLD 10.0.1 to avoid warnings.

 - Fix undesirable line breaks in *.mod files.

* tag 'kbuild-fixes-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: avoid split lines in .mod files
  kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
  kbuild: Hoist '--orphan-handling' into Kconfig
  Kbuild: do not emit debug info for assembly with LLVM_IAS=1
  kbuild: use -fmacro-prefix-map for .S sources
  Makefile.extrawarn: move -Wcast-align to W=3
2020-12-06 10:31:39 -08:00
Masahiro Yamada
7d32358be8 kbuild: avoid split lines in .mod files
"xargs echo" is not a safe way to remove line breaks because the input
may exceed the command line limit and xargs may break it up into
multiple invocations of echo. This should never happen because
scripts/gen_autoksyms.sh expects all undefined symbols are placed in
the second line of .mod files.

One possible way is to replace "xargs echo" with
"sed ':x;N;$!bx;s/\n/ /g'" or something, but I rewrote the code by
using awk because it is more readable.

This issue was reported by Sami Tolvanen; in his Clang LTO patch set,
$(multi-used-m) is no longer an ELF object, but a thin archive that
contains LLVM bitcode files. llvm-nm prints out symbols for each
archive member separately, which results a lot of dupications, in some
places, beyond the system-defined limit.

This problem must be fixed irrespective of LTO, and we must ensure
zero possibility of having this issue.

Link: https://lkml.org/lkml/2020/12/1/1658
Reported-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
2020-12-06 21:09:28 +09:00
Nathan Chancellor
d5750cd3c5 kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
along with a few others. Newer versions of ld.lld do not have these
warnings. As a result, do not add '--orphan-handling=warn' to
LDFLAGS_vmlinux if ld.lld's version is not new enough.

Link: https://github.com/ClangBuiltLinux/linux/issues/1187
Link: https://github.com/ClangBuiltLinux/linux/issues/1193
Reported-by: Arvind Sankar <nivedita@alum.mit.edu>
Reported-by: kernelci.org bot <bot@kernelci.org>
Reported-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-12-01 22:46:06 +09:00
Linus Torvalds
45e885c439 Kbuild fixes for v5.10
- Remove unused OBJSIZE variable.
 
  - Fix rootless deb-pkg build in a setgid directory.
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Merge tag 'kbuild-fixes-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Remove unused OBJSIZE variable.

 - Fix rootless deb-pkg build in a setgid directory.

* tag 'kbuild-fixes-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  builddeb: Fix rootless build in setuid/setgid directory
  kbuild: remove unused OBJSIZE
2020-11-28 10:42:30 -08:00
Arnd Bergmann
095fbca0a9 Makefile.extrawarn: move -Wcast-align to W=3
This warning behaves differently depending on the architecture
and compiler. Using x86 gcc, we get no output at all because
gcc knows the architecture can handle unaligned accesses.

Using x86 clang, or gcc on an architecture that needs to
manually deal with unaligned accesses, the build log is
completely flooded with these warnings, as they are commonly
invoked by inline functions of networking headers, e.g.

include/linux/skbuff.h:1426:26: warning: cast increases required alignment of target type [-Wcast-align]

The compiler is correct to point this out, as we are dealing
with undefined behavior that does cause problems in practice,
but there is also no good way to rewrite the code in commonly
included headers to a safer method.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-11-25 03:36:10 +09:00
Linus Torvalds
db7c953555 Networking fixes for 5.10-rc4, including fixes from the bpf subtree.
Current release - regressions:
 
  - arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for ENETC
 
 Current release - bugs in new features:
 
  - mptcp: provide rmem[0] limit offset to fix oops
 
 Previous release - regressions:
 
  - IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
    calculations
 
  - lan743x: correctly handle chips with internal PHY
 
  - bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
 
  - mlx5e: Fix VXLAN port table synchronization after function reload
 
 Previous release - always broken:
 
  - bpf: Zero-fill re-used per-cpu map element
 
  - net: udp: fix out-of-order packets when forwarding with UDP GSO
              fraglists turned on
    - fix UDP header access on Fast/frag0 UDP GRO
    - fix IP header access and skb lookup on Fast/frag0 UDP GRO
 
  - ethtool: netlink: add missing netdev_features_change() call
 
  - net: Update window_clamp if SOCK_RCVBUF is set
 
  - igc: Fix returning wrong statistics
 
  - ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload
 
  - tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies
 
  - r8169: disable hw csum for short packets on all chip versions
 
  - vrf: Fix fast path output packet handling with async Netfilter rules
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Current release - regressions:

   - arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for
     ENETC

  Current release - bugs in new features:

   - mptcp: provide rmem[0] limit offset to fix oops

  Previous release - regressions:

   - IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
     calculations

   - lan743x: correctly handle chips with internal PHY

   - bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE

   - mlx5e: Fix VXLAN port table synchronization after function reload

  Previous release - always broken:

   - bpf: Zero-fill re-used per-cpu map element

   - fix out-of-order UDP packets when forwarding with UDP GSO fraglists
     turned on:
       - fix UDP header access on Fast/frag0 UDP GRO
       - fix IP header access and skb lookup on Fast/frag0 UDP GRO

   - ethtool: netlink: add missing netdev_features_change() call

   - net: Update window_clamp if SOCK_RCVBUF is set

   - igc: Fix returning wrong statistics

   - ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload

   - tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies

   - r8169: disable hw csum for short packets on all chip versions

   - vrf: Fix fast path output packet handling with async Netfilter
     rules"

* tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
  lan743x: fix use of uninitialized variable
  net: udp: fix IP header access and skb lookup on Fast/frag0 UDP GRO
  net: udp: fix UDP header access on Fast/frag0 UDP GRO
  devlink: Avoid overwriting port attributes of registered port
  vrf: Fix fast path output packet handling with async Netfilter rules
  cosa: Add missing kfree in error path of cosa_write
  net: switch to the kernel.org patchwork instance
  ch_ktls: stop the txq if reaches threshold
  ch_ktls: tcb update fails sometimes
  ch_ktls/cxgb4: handle partial tag alone SKBs
  ch_ktls: don't free skb before sending FIN
  ch_ktls: packet handling prior to start marker
  ch_ktls: Correction in middle record handling
  ch_ktls: missing handling of header alone
  ch_ktls: Correction in trimmed_len calculation
  cxgb4/ch_ktls: creating skbs causes panic
  ch_ktls: Update cheksum information
  ch_ktls: Correction in finding correct length
  cxgb4/ch_ktls: decrypted bit is not enough
  net/x25: Fix null-ptr-deref in x25_connect
  ...
2020-11-12 14:02:04 -08:00
Linus Torvalds
15f5d201c1 Driver core documentation fixes for 5.10-rc3
Here are some small Documentation fixes for 5.10-rc3 that were fallout
 from the larger documentation update we did in 5.10-rc2.  Nothing major
 here at all, but all of these have been in linux-next and resolve build
 warnings when building the documentation files.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core documentation fixes from Greg KH:
 "Some small Documentation fixes that were fallout from the larger
  documentation update we did in 5.10-rc2.

  Nothing major here at all, but all of these have been in linux-next
  and resolve build warnings when building the documentation files"

* tag 'driver-core-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  Documentation: remove mic/index from misc-devices/index.rst
  scripts: get_api.pl: Add sub-titles to ABI output
  scripts: get_abi.pl: Don't let ABI files to create subtitles
  docs: leds: index.rst: add a missing file
  docs: ABI: sysfs-class-net: fix a typo
  docs: ABI: sysfs-driver-dma-ioatdma: what starts with /sys
2020-11-08 11:30:25 -08:00
Jakub Kicinski
86bbf01977 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:

====================
pull-request: bpf 2020-11-06

1) Pre-allocated per-cpu hashmap needs to zero-fill reused element, from David.

2) Tighten bpf_lsm function check, from KP.

3) Fix bpftool attaching to flow dissector, from Lorenz.

4) Use -fno-gcse for the whole kernel/bpf/core.c instead of function attribute, from Ard.

* git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Update verification logic for LSM programs
  bpf: Zero-fill re-used per-cpu map element
  bpf: BPF_PRELOAD depends on BPF_SYSCALL
  tools/bpftool: Fix attaching flow dissector
  libbpf: Fix possible use after free in xsk_socket__delete
  libbpf: Fix null dereference in xsk_socket__delete
  libbpf, hashmap: Fix undefined behavior in hash_bits
  bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
  tools, bpftool: Remove two unused variables.
  tools, bpftool: Avoid array index warnings.
  xsk: Fix possible memory leak at socket close
  bpf: Add struct bpf_redir_neigh forward declaration to BPF helper defs
  samples/bpf: Set rlimit for memlock to infinity in all samples
  bpf: Fix -Wshadow warnings
  selftest/bpf: Fix profiler test using CO-RE relocation for enums
====================

Link: https://lore.kernel.org/r/20201106221759.24143-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 17:49:34 -08:00
Linus Torvalds
e6b0bd61a7 This pull contains a series of warning fixes from Mauro; once applied, the
number of warnings from the once-noisy docs build process is nearly zero.
 Getting to this point has required a lot of work; once there, hopefully we
 can keep things that way.
 
 I have packaged this as a separate pull because it does a fair amount of
 reaching outside of Documentation/.  The changes are all in comments and in
 code placement.  It's all been in linux-next since last week.
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Merge tag 'docs-5.10-warnings' of git://git.lwn.net/linux

Pull documentation build warning fixes from Jonathan Corbet:
 "This contains a series of warning fixes from Mauro; once applied, the
  number of warnings from the once-noisy docs build process is nearly
  zero.

  Getting to this point has required a lot of work; once there,
  hopefully we can keep things that way.

  I have packaged this as a separate pull because it does a fair amount
  of reaching outside of Documentation/. The changes are all in comments
  and in code placement. It's all been in linux-next since last week"

* tag 'docs-5.10-warnings' of git://git.lwn.net/linux: (24 commits)
  docs: SafeSetID: fix a warning
  amdgpu: fix a few kernel-doc markup issues
  selftests: kselftest_harness.h: fix kernel-doc markups
  drm: amdgpu_dm: fix a typo
  gpu: docs: amdgpu.rst: get rid of wrong kernel-doc markups
  drm: amdgpu: kernel-doc: update some adev parameters
  docs: fs: api-summary.rst: get rid of kernel-doc include
  IB/srpt: docs: add a description for cq_size member
  locking/refcount: move kernel-doc markups to the proper place
  docs: lockdep-design: fix some warning issues
  MAINTAINERS: fix broken doc refs due to yaml conversion
  ice: docs fix a devlink info that broke a table
  crypto: sun8x-ce*: update entries to its documentation
  net: phy: remove kernel-doc duplication
  mm: pagemap.h: fix two kernel-doc markups
  blk-mq: docs: add kernel-doc description for a new struct member
  docs: userspace-api: add iommu.rst to the index file
  docs: hwmon: mp2975.rst: address some html build warnings
  docs: net: statistics.rst: remove a duplicated kernel-doc
  docs: kasan.rst: add two missing blank lines
  ...
2020-11-03 13:14:14 -08:00
Linus Torvalds
ce2e33ba41 A small number of fixes, plus a build tweak to respect the desire for
silence in V=0 builds.
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Merge tag 'docs-5.10-3' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A small number of fixes, plus a build tweak to respect the desire for
  silence in V=0 builds"

* tag 'docs-5.10-3' of git://git.lwn.net/linux:
  docs: fix automarkup regression on Python 2
  documentation: arm: sunxi: add Allwinner H6 documents
  scripts: kernel-doc: split typedef complex regex
  scripts: kernel-doc: fix typedef parsing
  docs: Makefile: honor V=0 for docs building
2020-11-03 09:57:30 -08:00
Mauro Carvalho Chehab
9d4fdda334 scripts: get_api.pl: Add sub-titles to ABI output
Instead of adding titles just for the files, add titles
for each part of the ABI output, in order to make easier
to search for a symbol there.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/64752a5de06ab8263c296e3ed01414b25861e1eb.1604312590.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-02 13:45:37 +01:00
Mauro Carvalho Chehab
daaaf58a2b scripts: get_abi.pl: Don't let ABI files to create subtitles
The ReST output should only contain documentation titles
automatically created by the script.

There are two reasons for that:

1) Consistency.

   just a handful ABI docs define titles

2) To avoid critical errors.

   Docutils (which is the basis for Sphinx) allows a free
   assign of documentation title markups. So, one document
   could be doing things like:

	Level 1
	=======

	Level 2
	-------

   While another one could do the reverse:

	Level 1
	-------

	Level 2
	=======

   But the same document can't mix.

   As the output of get_abi.pl will join contents from multiple
   files, if they don't define the levels on a consistent errors,
   errors like this can happen:

	Sphinx parallel build error:
	docutils.utils.SystemMessage: /home/rdunlap/lnx/lnx-510-rc2/Documentation/ABI/testing/sysfs-bus-rapidio:2: (SEVERE/4) Title level inconsistent:

	Attributes Common for All RapidIO Devices
	-----------------------------------------

   Which cause some versions of Sphinx to go into an endless
   loop.

   It should be noticed that an alternative to that would
   be to replace all title occurrences by a single markup,
   but that will make the parser more complex, and, due to
   (1) it would generate an inconsistent output.

   So, better to just remove the titles defined at the ABI
   files from the output.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6c62ef5c01d39dee8d891f8390c816d2a889670a.1604312590.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-02 13:45:37 +01:00
Sven Joachim
d1889589a4 builddeb: Fix rootless build in setuid/setgid directory
Building 5.10-rc1 in a setgid directory failed with the following
error:

dpkg-deb: error: control directory has bad permissions 2755 (must be
>=0755 and <=0775)

When building with fakeroot, the earlier chown call would have removed
the setgid bits, but in a rootless build they remain.

Fixes: 3e85418036 ("builddeb: Enable rootless builds")
Cc: Guillem Jover <guillem@hadrons.org>
Signed-off-by: Sven Joachim <svenjoac@gmx.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-11-02 11:31:00 +09:00
Mauro Carvalho Chehab
2fcce37a3d scripts: get_abi.pl: assume ReST format by default
All ABI files are now compatible with ReST format. So, change
the script default to assume that the ABI source files
are compatible with ReST.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4b0af257010570e0e917d82498e42992bec5e173.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:16:03 +01:00
Mauro Carvalho Chehab
54a19b4d3f docs: ABI: cleanup several ABI documents
There are some ABI documents that, while they don't generate
any warnings, they have issues when parsed by get_abi.pl script
on its output result.

Address them, in order to provide a clean output.

Reviewed-by: Tom Rix <trix@redhat.com> # for fpga-manager
Reviewed-By: Kajol Jain<kjain@linux.ibm.com> # for sysfs-bus-event_source-devices-hv_gpci and sysfs-bus-event_source-devices-hv_24x7
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for IIO
Acked-by: Oded Gabbay <oded.gabbay@gmail.com> # for Habanalabs
Acked-by: Vaibhav Jain <vaibhav@linux.ibm.com> # for sysfs-bus-papr-pmem
Acked-by: Cezary Rojewski <cezary.rojewski@intel.com> # for catpt
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Ilya Dryomov <idryomov@gmail.com> # for rbd
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5bc78e5b68ed1e9e39135173857cb2e753be868f.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:14:29 +01:00
Mauro Carvalho Chehab
75442fb0cc docs: Kconfig/Makefile: add a check for broken ABI files
The files under Documentation/ABI should follow the syntax
as defined at Documentation/ABI/README.

Allow checking if they're following the syntax by running
the ABI parser script on COMPILE_TEST.

With that, when there's a problem with a file under
Documentation/ABI, it would produce a warning like:

	Warning: file ./Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats#14:
		What '/sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_cor' doesn't have a description
	Warning: file ./Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats#21:
		What '/sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_fatal' doesn't have a description

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/57a38de85cb4b548857207cf1fc1bf1ee08613c9.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:08:07 +01:00
Mauro Carvalho Chehab
55e5414f2f scripts: get_abi.pl: auto-generate cross references
There are several cross-references that can be automatically
generated:

	- References to .rst files inside Documentation/
	- References to other ABI files;
	- References to ABI symbols at /sys/*.

Add a logic to automatically parse them and convert into
cross references.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/abe756d4f94fb6ffcc3dd3902a766c7c3990ea89.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab
c01d62d3fe scripts: get_abi.pl: use bold font for ABI definitions
As we're using tables, let's distinguish the ones used by ABI
by using a bold font.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9ed645c2519169817379c1df5b8cf03828e92520.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab
a4ea67bc65 scripts: get_abi.pl: prevent duplicated file names
The same filename may exist on multiple directories within
ABI. Create separate entries at the internal database for
each of them.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/ef760f68f54e132c4be52f0027189b4ba31554ec.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab
a16ab14eb7 scripts: get_abi.pl: output users in ReST format
Right now, the script only outputs Users on search. Print it
also in ReST format.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/83def2a692c4c678f21ee6e76b66a54d2be1e796.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab
c7ba333426 scripts: get_abi.pl: detect duplicated ABI definitions
The ABI should define only once each What. The current script
logic assumes that.

However, that's not the case, currently: there are several
symbols with a generic definition, and per-driver ones.

Better handle such cases, by preserving the cross-references
with the files that define them, but also track such
cases, producing warnings, as they should be fixed.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d7a73b8b3aae5b2bff9279996ff9ca4cdfc89196.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab
234948bf3d scripts: get_abi.pl: cleanup ABI cross-reference logic
Right now, the cross-references are generated on a single
step, when doing ReST output.

While this is nice optimization, it prevents auto-creating
cross-references for ABI symbols.

So, split it into a separate logic.

While here, turn on Perl warnings, as it helps to debug
problems inside the script.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/dbc97c8c2dfd877921f058134c35b2a8b1f8414b.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:25 +01:00
Mauro Carvalho Chehab
f82a8a74ea scripts: get_abi.pl: improve its parser to better catch up indentation
The original parser for indentation were relying on having
just one description for each "what". However, that's not
the case: there are a number of ABI symbols that got defined
multiple times.

Improve the parser for it to better handle descriptions
if entries are duplicated.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/eb458bb30be0e5a89192d6057b2e8a7e910dbcb8.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:25 +01:00
Mauro Carvalho Chehab
61439c4ada scripts: get_abi.pl: Allow optionally record from where a line came from
The get_abi.pl reads a lot of files and can join them on a
single output file. Store where each "What:" output came from,
in order to be able to optionally display it.

This is useful for the Sphinx extension, with can now be
able to blame what ABI file has issues, and on what line
the What: description with problems begin.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/befc387011c5e3c6febd285b7f27610e41c90260.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:25 +01:00
Mauro Carvalho Chehab
e9bca8918e scripts: get_abi.pl: fix parsing on ReST mode
When the source ABI file is using ReST notation, the script
should handle whitespaces and lines with care, as otherwise
the file won't be properly recognized.

Address the bugs that are on such part of the script.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5c22c54fbd0cda797b691d52c568be6d0d1079d8.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:25 +01:00
Mauro Carvalho Chehab
11ce90a45d scripts: get_abi.pl: change script to allow parsing in ReST mode
Right now, several ABI files won't parse as ReST, as they
contain severe violations to the spec, with makes the script
to crash.

So, the code has a sanity logic with escapes bad code and
cleans tags that can cause Sphinx to crash.

Add support for disabling this mode.

Right now, as enabling rst-mode causes crash, it is disabled
by default.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/34b691e3002e8987c24d851fe37640f95e506a92.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:25 +01:00
Andrii Nakryiko
821f5c9013 bpf: Add struct bpf_redir_neigh forward declaration to BPF helper defs
Forward-declare struct bpf_redir_neigh in bpf_helper_defs.h to avoid
compiler warning about unknown structs.

Fixes: ba452c9e99 ("bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20201028181204.111241-1-andrii@kernel.org
2020-10-29 15:19:04 +01:00
Mauro Carvalho Chehab
72b97d0b91 scripts: kernel-doc: use :c:union when needed
Sphinx C domain code after 3.2.1 will start complaning if :c:struct
would be used for an union type:

	.../Documentation/gpu/drm-kms-helpers:352: ../drivers/video/hdmi.c:851: WARNING: C 'identifier' cross-reference uses wrong tag: reference name is 'union hdmi_infoframe' but found name is 'struct hdmi_infoframe'. Full reference name is 'union hdmi_infoframe'. Full found name is 'struct hdmi_infoframe'.

So, let's address this issue too in advance, in order to
avoid future issues.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6e4ec3eec914df62389a299797a3880ae4490f35.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:26:09 -06:00
Mauro Carvalho Chehab
7efc6c4295 scripts: kernel-doc: split typedef complex regex
The typedef regex for function prototypes are very complex.
Split them into 3 separate regex and then join them using
qr.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/3a4af999a0d62d4ab9dfae1cdefdfcad93383356.1603792384.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:13:34 -06:00
Mauro Carvalho Chehab
6b80975c63 scripts: kernel-doc: fix typedef parsing
The include/linux/genalloc.h file defined this typedef:

	typedef unsigned long (*genpool_algo_t)(unsigned long *map,unsigned long size,unsigned long start,unsigned int nr,void *data, struct gen_pool *pool, unsigned long start_addr);

Because it has a type composite of two words (unsigned long),
the parser gets the typedef name wrong:

.. c:macro:: long

   **Typedef**: Allocation callback function type definition

Fix the regex in order to accept composite types when
defining a typedef for a function pointer.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/328e8018041cc44f7a1684e57f8d111230761c4f.1603792384.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:13:29 -06:00
Joe Perches
33def8498f treewide: Convert macro and uses of __section(foo) to __section("foo")
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.

Remove the quote operator # from compiler_attributes.h __section macro.

Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.

Conversion done using the script at:

    https://lore.kernel.org/lkml/75393e5ddc272dc7403de74d645e6c6e0f4e70eb.camel@perches.com/2-convert_section.pl

Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@gooogle.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-25 14:51:49 -07:00
Joe Perches
0f7f635b06 checkpatch: enable GIT_DIR environment use to set git repository location
If set, use the environment variable GIT_DIR to change the default .git
location of the kernel git tree.

If GIT_DIR is unset, keep using the current ".git" default.

Link: https://lkml.kernel.org/r/c5e23b45562373d632fccb8bc04e563abba4dd1d.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-25 11:36:33 -07:00
Linus Torvalds
3cb12d27ff Fixes for 5.10-rc1 from the networking tree:
Cross-tree/merge window issues:
 
  - rtl8150: don't incorrectly assign random MAC addresses; fix late
    in the 5.9 cycle started depending on a return code from
    a function which changed with the 5.10 PR from the usb subsystem
 
 Current release - regressions:
 
  - Revert "virtio-net: ethtool configurable RXCSUM", it was causing
    crashes at probe when control vq was not negotiated/available
 
 Previous releases - regressions:
 
  - ixgbe: fix probing of multi-port 10 Gigabit Intel NICs with an MDIO
    bus, only first device would be probed correctly
 
  - nexthop: Fix performance regression in nexthop deletion by
    effectively switching from recently added synchronize_rcu()
    to synchronize_rcu_expedited()
 
  - netsec: ignore 'phy-mode' device property on ACPI systems;
    the property is not populated correctly by the firmware,
    but firmware configures the PHY so just keep boot settings
 
 Previous releases - always broken:
 
  - tcp: fix to update snd_wl1 in bulk receiver fast path, addressing
    bulk transfers getting "stuck"
 
  - icmp: randomize the global rate limiter to prevent attackers from
    getting useful signal
 
  - r8169: fix operation under forced interrupt threading, make the
    driver always use hard irqs, even on RT, given the handler is
    light and only wants to schedule napi (and do so through
    a _irqoff() variant, preferably)
 
  - bpf: Enforce pointer id generation for all may-be-null register
    type to avoid pointers erroneously getting marked as null-checked
 
  - tipc: re-configure queue limit for broadcast link
 
  - net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN
    tunnels
 
  - fix various issues in chelsio inline tls driver
 
 Misc:
 
  - bpf: improve just-added bpf_redirect_neigh() helper api to support
    supplying nexthop by the caller - in case BPF program has already
    done a lookup we can avoid doing another one
 
  - remove unnecessary break statements
 
  - make MCTCP not select IPV6, but rather depend on it
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
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Merge tag 'net-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Cross-tree/merge window issues:

   - rtl8150: don't incorrectly assign random MAC addresses; fix late in
     the 5.9 cycle started depending on a return code from a function
     which changed with the 5.10 PR from the usb subsystem

  Current release regressions:

   - Revert "virtio-net: ethtool configurable RXCSUM", it was causing
     crashes at probe when control vq was not negotiated/available

  Previous release regressions:

   - ixgbe: fix probing of multi-port 10 Gigabit Intel NICs with an MDIO
     bus, only first device would be probed correctly

   - nexthop: Fix performance regression in nexthop deletion by
     effectively switching from recently added synchronize_rcu() to
     synchronize_rcu_expedited()

   - netsec: ignore 'phy-mode' device property on ACPI systems; the
     property is not populated correctly by the firmware, but firmware
     configures the PHY so just keep boot settings

  Previous releases - always broken:

   - tcp: fix to update snd_wl1 in bulk receiver fast path, addressing
     bulk transfers getting "stuck"

   - icmp: randomize the global rate limiter to prevent attackers from
     getting useful signal

   - r8169: fix operation under forced interrupt threading, make the
     driver always use hard irqs, even on RT, given the handler is light
     and only wants to schedule napi (and do so through a _irqoff()
     variant, preferably)

   - bpf: Enforce pointer id generation for all may-be-null register
     type to avoid pointers erroneously getting marked as null-checked

   - tipc: re-configure queue limit for broadcast link

   - net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN
     tunnels

   - fix various issues in chelsio inline tls driver

  Misc:

   - bpf: improve just-added bpf_redirect_neigh() helper api to support
     supplying nexthop by the caller - in case BPF program has already
     done a lookup we can avoid doing another one

   - remove unnecessary break statements

   - make MCTCP not select IPV6, but rather depend on it"

* tag 'net-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits)
  tcp: fix to update snd_wl1 in bulk receiver fast path
  net: Properly typecast int values to set sk_max_pacing_rate
  netfilter: nf_fwd_netdev: clear timestamp in forwarding path
  ibmvnic: save changed mac address to adapter->mac_addr
  selftests: mptcp: depends on built-in IPv6
  Revert "virtio-net: ethtool configurable RXCSUM"
  rtnetlink: fix data overflow in rtnl_calcit()
  net: ethernet: mtk-star-emac: select REGMAP_MMIO
  net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup
  net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device
  bpf, libbpf: Guard bpf inline asm from bpf_tail_call_static
  bpf, selftests: Extend test_tc_redirect to use modified bpf_redirect_neigh()
  bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop
  mptcp: depends on IPV6 but not as a module
  sfc: move initialisation of efx->filter_sem to efx_init_struct()
  mpls: load mpls_gso after mpls_iptunnel
  net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels
  net/sched: act_gate: Unlock ->tcfa_lock in tc_setup_flow_action()
  net: dsa: bcm_sf2: make const array static, makes object smaller
  mptcp: MPTCP_IPV6 should depend on IPV6 instead of selecting it
  ...
2020-10-23 12:05:49 -07:00
Linus Torvalds
f9893351ac Kconfig updates for v5.10
- Remove unused for useless code from qconf
 
  - Allow to edit "int", "hex", "string" options in place, and remove the
    separate edit box from qconf
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Merge tag 'kconfig-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kconfig updates from Masahiro Yamada:

 - Remove unused or useless code from qconf

 - Allow to edit "int", "hex", "string" options in place, and remove the
   separate edit box from qconf

* tag 'kconfig-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: qconf: create QApplication after option checks
  kconfig: qconf: remove Y, M, N columns
  kconfig: qconf: remove ConfigView class
  kconfig: qconf: move setShowName/Range() to ConfigList from ConfigView
  kconfig: qconf: remove ConfigLineEdit class
  kconfig: qconf: allow to edit "int", "hex", "string" menus in-place
  kconfig: qconf: show data column all the time
  kconfig: qconf: move ConfigView::updateList(All) to ConfigList class
  kconfig: qconf: remove unused ConfigItem::okRename()
  kconfig: qconf: update the intro message to match to the current code
  kconfig: qconf: reformat the intro message
2020-10-22 13:20:39 -07:00
Linus Torvalds
746b25b1aa Kbuild updates for v5.10
- Support 'make compile_commands.json' to generate the compilation
    database more easily, avoiding stale entries
 
  - Support 'make clang-analyzer' and 'make clang-tidy' for static checks
    using clang-tidy
 
  - Preprocess scripts/modules.lds.S to allow CONFIG options in the module
    linker script
 
  - Drop cc-option tests from compiler flags supported by our minimal
    GCC/Clang versions
 
  - Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y
 
  - Use sha1 build id for both BFD linker and LLD
 
  - Improve deb-pkg for reproducible builds and rootless builds
 
  - Remove stale, useless scripts/namespace.pl
 
  - Turn -Wreturn-type warning into error
 
  - Fix build error of deb-pkg when CONFIG_MODULES=n
 
  - Replace 'hostname' command with more portable 'uname -n'
 
  - Various Makefile cleanups
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Merge tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Support 'make compile_commands.json' to generate the compilation
   database more easily, avoiding stale entries

 - Support 'make clang-analyzer' and 'make clang-tidy' for static checks
   using clang-tidy

 - Preprocess scripts/modules.lds.S to allow CONFIG options in the
   module linker script

 - Drop cc-option tests from compiler flags supported by our minimal
   GCC/Clang versions

 - Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y

 - Use sha1 build id for both BFD linker and LLD

 - Improve deb-pkg for reproducible builds and rootless builds

 - Remove stale, useless scripts/namespace.pl

 - Turn -Wreturn-type warning into error

 - Fix build error of deb-pkg when CONFIG_MODULES=n

 - Replace 'hostname' command with more portable 'uname -n'

 - Various Makefile cleanups

* tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
  kbuild: Use uname for LINUX_COMPILE_HOST detection
  kbuild: Only add -fno-var-tracking-assignments for old GCC versions
  kbuild: remove leftover comment for filechk utility
  treewide: remove DISABLE_LTO
  kbuild: deb-pkg: clean up package name variables
  kbuild: deb-pkg: do not build linux-headers package if CONFIG_MODULES=n
  kbuild: enforce -Werror=return-type
  scripts: remove namespace.pl
  builddeb: Add support for all required debian/rules targets
  builddeb: Enable rootless builds
  builddeb: Pass -n to gzip for reproducible packages
  kbuild: split the build log of kallsyms
  kbuild: explicitly specify the build id style
  scripts/setlocalversion: make git describe output more reliable
  kbuild: remove cc-option test of -Werror=date-time
  kbuild: remove cc-option test of -fno-stack-check
  kbuild: remove cc-option test of -fno-strict-overflow
  kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles
  kbuild: remove redundant CONFIG_KASAN check from scripts/Makefile.kasan
  kbuild: do not create built-in objects for external module builds
  ...
2020-10-22 13:13:57 -07:00
Toke Høiland-Jørgensen
ba452c9e99 bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop
Based on the discussion in [0], update the bpf_redirect_neigh() helper to
accept an optional parameter specifying the nexthop information. This makes
it possible to combine bpf_fib_lookup() and bpf_redirect_neigh() without
incurring a duplicate FIB lookup - since the FIB lookup helper will return
the nexthop information even if no neighbour is present, this can simply
be passed on to bpf_redirect_neigh() if bpf_fib_lookup() returns
BPF_FIB_LKUP_RET_NO_NEIGH. Thus fix & extend it before helper API is frozen.

  [0] https://lore.kernel.org/bpf/393e17fc-d187-3a8d-2f0d-a627c7c63fca@iogearbox.net/

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/bpf/160322915615.32199.1187570224032024535.stgit@toke.dk
2020-10-22 01:28:54 +02:00
Chris Down
1e66d50ad3 kbuild: Use uname for LINUX_COMPILE_HOST detection
`hostname` may not be present on some systems as it's not mandated by
POSIX/SUSv4. This isn't just a theoretical problem: on Arch Linux,
`hostname` is provided by `inetutils`, which isn't part of the base
distribution.

    ./scripts/mkcompile_h: line 38: hostname: command not found

Use `uname -n` instead, which is more likely to be available (and
mandated by standards).

Signed-off-by: Chris Down <chris@chrisdown.name>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-10-21 00:46:04 +09:00
Rasmus Villemoes
8402ee182c kbuild: remove leftover comment for filechk utility
After commit 43fee2b238 ("kbuild: do not redirect the first
prerequisite for filechk"), the rule is no longer automatically passed
$< as stdin, so remove the stale comment.

Fixes: 43fee2b238 ("kbuild: do not redirect the first prerequisite for filechk")
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-10-21 00:28:53 +09:00
Sami Tolvanen
0f6372e522 treewide: remove DISABLE_LTO
This change removes all instances of DISABLE_LTO from
Makefiles, as they are currently unused, and the preferred
method of disabling LTO is to filter out the flags instead.

Note added by Masahiro Yamada:
DISABLE_LTO was added as preparation for GCC LTO, but GCC LTO was
not pulled into the mainline. (https://lkml.org/lkml/2014/4/8/272)

Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-10-21 00:28:53 +09:00
Linus Torvalds
f66179ca7a Merge branch 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux
Pull coccinelle updates from Julia Lawall.

* 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
  coccinelle: api: add kfree_mismatch script
  coccinelle: iterators: Add for_each_child.cocci script
  scripts: coccicheck: Change default condition for parallelism
  scripts: coccicheck: Add quotes to improve portability
  coccinelle: api: kfree_sensitive: print memset position
  coccinelle: misc: add flexible_array.cocci script
  coccinelle: api: add kvmalloc script
  scripts: coccicheck: Change default value for parallelism
  coccinelle: misc: add excluded_middle.cocci script
  scripts: coccicheck: Improve error feedback when coccicheck fails
  coccinelle: api: update kzfree script to kfree_sensitive
  coccinelle: misc: add uninitialized_var.cocci script
  coccinelle: ifnullfree: add vfree(), kvfree*() functions
  coccinelle: api: add kobj_to_dev.cocci script
  coccinelle: add patch rule for dma_alloc_coherent
  scripts: coccicheck: Add chain mode to list of modes
2020-10-18 14:20:35 -07:00
Denis Efremov
edc05fe555 coccinelle: api: add kfree_mismatch script
Check that alloc and free types of functions match each other.

Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
2020-10-17 23:11:06 +02:00
Linus Torvalds
54a4c789ca docs updates for v5.10-rc1
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Merge tag 'docs/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull documentation updates from Mauro Carvalho Chehab:
 "A series of patches addressing warnings produced by make htmldocs.
  This includes:

   - kernel-doc markup fixes

   - ReST fixes

   - Updates at the build system in order to support newer versions of
     the docs build toolchain (Sphinx)

  After this series, the number of html build warnings should reduce
  significantly, and building with Sphinx 3.1 or later should now be
  supported (although it is still recommended to use Sphinx 2.4.4).

  As agreed with Jon, I should be sending you a late pull request by the
  end of the merge window addressing remaining issues with docs build,
  as there are a number of warning fixes that depends on pull requests
  that should be happening along the merge window.

  The end goal is to have a clean htmldocs build on Kernel 5.10.

  PS. It should be noticed that Sphinx 3.0 is not currently supported,
  as it lacks support for C domain namespaces. Such feature, needed in
  order to document uAPI system calls with Sphinx 3.x, was added only on
  Sphinx 3.1"

* tag 'docs/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (75 commits)
  PM / devfreq: remove a duplicated kernel-doc markup
  mm/doc: fix a literal block markup
  workqueue: fix a kernel-doc warning
  docs: virt: user_mode_linux_howto_v2.rst: fix a literal block markup
  Input: sparse-keymap: add a description for @sw
  rcu/tree: docs: document bkvcache new members at struct kfree_rcu_cpu
  nl80211: docs: add a description for s1g_cap parameter
  usb: docs: document altmode register/unregister functions
  kunit: test.h: fix a bad kernel-doc markup
  drivers: core: fix kernel-doc markup for dev_err_probe()
  docs: bio: fix a kerneldoc markup
  kunit: test.h: solve kernel-doc warnings
  block: bio: fix a warning at the kernel-doc markups
  docs: powerpc: syscall64-abi.rst: fix a malformed table
  drivers: net: hamradio: fix document location
  net: appletalk: Kconfig: Fix docs location
  dt-bindings: fix references to files converted to yaml
  memblock: get rid of a :c:type leftover
  math64.h: kernel-docs: Convert some markups into normal comments
  media: uAPI: buffer.rst: remove a left-over documentation
  ...
2020-10-16 15:02:21 -07:00
Linus Torvalds
c4cf498dc0 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "155 patches.

  Subsystems affected by this patch series: mm (dax, debug, thp,
  readahead, page-poison, util, memory-hotplug, zram, cleanups), misc,
  core-kernel, get_maintainer, MAINTAINERS, lib, bitops, checkpatch,
  binfmt, ramfs, autofs, nilfs, rapidio, panic, relay, kgdb, ubsan,
  romfs, and fault-injection"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (155 commits)
  lib, uaccess: add failure injection to usercopy functions
  lib, include/linux: add usercopy failure capability
  ROMFS: support inode blocks calculation
  ubsan: introduce CONFIG_UBSAN_LOCAL_BOUNDS for Clang
  sched.h: drop in_ubsan field when UBSAN is in trap mode
  scripts/gdb/tasks: add headers and improve spacing format
  scripts/gdb/proc: add struct mount & struct super_block addr in lx-mounts command
  kernel/relay.c: drop unneeded initialization
  panic: dump registers on panic_on_warn
  rapidio: fix the missed put_device() for rio_mport_add_riodev
  rapidio: fix error handling path
  nilfs2: fix some kernel-doc warnings for nilfs2
  autofs: harden ioctl table
  ramfs: fix nommu mmap with gaps in the page cache
  mm: remove the now-unnecessary mmget_still_valid() hack
  mm/gup: take mmap_lock in get_dump_page()
  binfmt_elf, binfmt_elf_fdpic: use a VMA list snapshot
  coredump: rework elf/elf_fdpic vma_dump_size() into common helper
  coredump: refactor page range dumping into common helper
  coredump: let dump_emit() bail out on short writes
  ...
2020-10-16 11:31:55 -07:00