It might be annoying to constantly see this:
scripts/Makefile.kasan:16: Cannot use CONFIG_KASAN: -fsanitize=kernel-address is not supported by compiler
while performing allmodconfig/allyesconfig build tests.
Disable this warning if CONFIG_COMPILE_TEST=y.
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since commit 1f65f947a6 ("checkpatch: add checks for question mark and
colon spacing") back in 2008, checkpatch has reported false positive for
asm volatile uses of "::" checkpatch thinks colons should always have
spaces around it.
Add an exception for colons with colons on either side for this valid asm
volatile (and c++) use.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Yehuda Yitschak <yehuday@marvell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If a patch touches multiple files, the --fix and --fix-inplace option
doesn't keep the proper line count and makes the new patch file not able
to be applied via bad offset line numbers when lines are added or deleted
by the --fix option.
Dunno how that extra backslash snuck in there.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ENOSYS means that a nonexistent system call was called. We have a
bad habit of using it for things like invalid operations on
otherwise valid syscalls. We should avoid this in new code.
Pervasive incorrect usage of ENOSYS came up at the kernel summit ABI
review discussion. Let's see if checkpatch can help.
I'll submit a separate patch for include/uapi/asm-generic/errno.h.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
const objects shouldn't be __read_mostly. They are read-only.
Marking these objects as __read_mostly causes section conflicts with LTO
linking.
So add a test to try to avoid this issue.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Code such as:
x = timercmp(&now, &end, <);
Will currently trigger a checkpatch error. e.g.
ERROR: spaces required around that '<'
This is because the "Ignore operators passed as parameters" check looks
only for a comma following the operator. Improve the check by also
looking for a close parenthesis.
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There are #defines with long string constants like:
#define foo "some really long string > 80 columns"
Add a long line exception for them.
Miscellanea:
Use the $String variable for slightly better readability
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit messages lines are sometimes overly long.
Suggest line wrapping at 75 columns so the default git commit log
indentation of 4 plus the commit message text still fits on an 80 column
screen.
Add a checkpatch test for long commit messages lines too.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: David Miller <davem@davemloft.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently checkpatch warns when asm/file.h is included and linux/file.h
exists. That conversion can be made when linux/file.h includes asm/file.h
which is not always the case.(See signal.h)
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Andy Whitcroft <apw@canonical.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>
Using 'const <type> const *' is generally meant to be written 'const
<type> * const'.
Add a test for the miswritten form.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently checkpatch will fuss if one uses world writable settings in
debugfs files and DEVICE_ATTR uses by testing S_IWUGO but not testing
S_IWOTH, S_IRWXUGO or S_IALLUGO.
Extend the check to catch all cases exporting world writable permissions
including octal values.
[akpm@linux-foundation.org: remove stray $]
Signed-off-by: Joe Perches <joe@perches.com>
Original-patch-by: Nicholas Mc Guire <hofrat@osadl.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If a codespell dictionary exists, use it if desired. default is off,
maybe it could be turned on later.
codespell's dictionary format allows multiple possible corrections, ignore
that for now and only use the first suggestion.
Also add \b to spelling test so that consecutive misspelled words
are found properly.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Masanari Iida <standby24x7@gmail.com>
Cc: Lucas De Marchi <lucas.de.marchi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The "no space is necessary after a cast" sizeof exclusion doesn't work
properly.
The test reports a false positive for code like:
BUILD_BUG_ON(sizeof(struct batadv_bla_claim_dst) != 6);
Make it work, simplify the exclusions, and add some comments.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull kconfig updates from Michal Marek:
"Here is the kconfig stuff for v4.1-rc1:
- fixes for mergeconfig (used by make kvmconfig/tinyconfig)
- header cleanup
- make -s *config is silent now"
* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
kconfig: Do not print status messages in make -s mode
kconfig: Simplify Makefile
kbuild: add generic mergeconfig target, %.config
merge_config.sh: rename MAKE to RUNMAKE
merge_config.sh: improve indentation
kbuild: mergeconfig: remove redundant $(objtree)
kbuild: mergeconfig: move an error check to merge_config.sh
kbuild: mergeconfig: fix "jobserver unavailable" warning
kconfig: Remove unnecessary prototypes from headers
kconfig: Remove dead code
kconfig: Get rid of the P() macro in headers
kconfig: fix a misspelling in scripts/kconfig/merge_config.sh
Pull kbuild updates from Michal Marek:
"Here is the first round of kbuild changes for v4.1-rc1:
- kallsyms fix for ARM and cleanup
- make dep(end) removed (developers have no sense of nostalgia these
days...)
- include Makefiles by relative path
- stop useless rebuilds of asm-offsets.h and bounds.h"
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
Kbuild: kallsyms: drop special handling of pre-3.0 GCC symbols
Kbuild: kallsyms: ignore veneers emitted by the ARM linker
kbuild: ia64: use $(src)/Makefile.gate rather than particular path
kbuild: include $(src)/Makefile rather than $(obj)/Makefile
kbuild: use relative path more to include Makefile
kbuild: use relative path to include Makefile
kbuild: do not add $(bounds-file) and $(offsets-file) to targets
kbuild: remove warning about "make depend"
kbuild: Don't reset timestamps in include/generated if not needed
Add an -s option to the various frontends and pass it when make -s is
used. Also, use $(kecho) instead of @echo in the Makefile.
Signed-off-by: Michal Marek <mmarek@suse.cz>
Since we have required at least GCC v3.2 for some time now, we
can drop the special handling of the 'gcc[0-9]_compiled.' label
which is not emitted anymore since GCC v3.0.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
When linking large kernels on ARM, the linker will insert veneers
(i.e., PLT like stubs) when function symbols are out of reach for
the ordinary relative branch/branch-and-link instructions.
However, due to the fact that the kallsyms region sits in .rodata,
which is between .text and .init.text, additional veneers may be
emitted in the second pass due to the fact that the size of the
kallsyms region itself has pushed the .init.text section further
apart, requiring even more veneers.
So ignore the veneers when generating the symbol table. Veneers
have no corresponding source code, and they will not turn up in
backtraces anyway.
This patch also lightly refactors the symbol_valid() function
to use a local 'sym_name' rather than the obfuscated 'sym + 1'
and 'sym + offset'
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
