21 Jan, 2019
3 commits
-
Pull gcc-plugins fixes from Kees Cook:
"Fix ARM per-task stack protector plugin under GCC 9 (Ard Biesheuvel)"* tag 'gcc-plugins-v5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
gcc-plugins: arm_ssp_per_task_plugin: fix for GCC 9+
gcc-plugins: arm_ssp_per_task_plugin: sign extend the SP mask -
GCC 9 reworks the way the references to the stack canary are
emitted, to prevent the value from being spilled to the stack
before the final comparison in the epilogue, defeating the
purpose, given that the spill slot is under control of the
attacker that we are protecting ourselves from.Since our canary value address is obtained without accessing
memory (as opposed to pre-v7 code that will obtain it from a
literal pool), it is unlikely (although not guaranteed) that
the compiler will spill the canary value in the same way, so
let's just disable this improvement when building with GCC9+.Signed-off-by: Ard Biesheuvel
Signed-off-by: Kees Cook -
The ARM per-task stack protector GCC plugin hits an assert in
the compiler in some case, due to the fact the the SP mask
expression is not sign-extended as it should be. So fix that.Suggested-by: Kugan Vivekanandarajah
Signed-off-by: Ard Biesheuvel
Signed-off-by: Kees Cook
14 Jan, 2019
2 commits
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Commit eea199b445f6 ("kbuild: remove unnecessary LEX_PREFIX and
YACC_PREFIX") removed the last users of this macro.Signed-off-by: Masahiro Yamada
-
I accidentally dropped '*' in the previous renaming patch.
Revive it so that 'make mrproper' can clean the generated files.
Fixes: d86271af6460 ("kconfig: rename generated .*conf-cfg to *conf-cfg")
Signed-off-by: Masahiro Yamada
13 Jan, 2019
1 commit
-
Pull dma_zalloc_coherent() removal from Christoph Hellwig:
"We've always had a weird situation around dma_zalloc_coherent. To
safely support mapping the allocations to userspace major
architectures like x86 and arm have always zeroed allocations from
dma_alloc_coherent, but a couple other architectures were missing that
zeroing either always or in corner cases.Then later we grew anothe dma_zalloc_coherent interface to explicitly
request zeroing, but that just added __GFP_ZERO to the allocation
flags, which for some allocators that didn't end up using the page
allocator ended up being a no-op and still not zeroing the
allocations.So for this merge window I fixed up all remaining architectures to
zero the memory in dma_alloc_coherent, and made dma_zalloc_coherent a
no-op wrapper around dma_alloc_coherent, which fixes all of the above
issues.dma_zalloc_coherent is now pointless and can go away, and Luis helped
me writing a cocchinelle script and patch series to kill it, which I
think we should apply now just after -rc1 to finally settle these
issue"* tag 'remove-dma_zalloc_coherent-5.0' of git://git.infradead.org/users/hch/dma-mapping:
dma-mapping: remove dma_zalloc_coherent()
cross-tree: phase out dma_zalloc_coherent() on headers
cross-tree: phase out dma_zalloc_coherent()
09 Jan, 2019
1 commit
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Commit
4cd24de3a098 ("x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support")
replaced the RETPOLINE define with CONFIG_RETPOLINE checks. Remove the
remaining pieces.[ bp: Massage commit message. ]
Fixes: 4cd24de3a098 ("x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support")
Signed-off-by: WANG Chao
Signed-off-by: Borislav Petkov
Reviewed-by: Zhenzhong Duan
Reviewed-by: Masahiro Yamada
Cc: "H. Peter Anvin"
Cc: Andi Kleen
Cc: Andrew Morton
Cc: Andy Lutomirski
Cc: Arnd Bergmann
Cc: Daniel Borkmann
Cc: David Woodhouse
Cc: Geert Uytterhoeven
Cc: Jessica Yu
Cc: Jiri Kosina
Cc: Kees Cook
Cc: Konrad Rzeszutek Wilk
Cc: Luc Van Oostenryck
Cc: Michal Marek
Cc: Miguel Ojeda
Cc: Peter Zijlstra
Cc: Tim Chen
Cc: Vasily Gorbik
Cc: linux-kbuild@vger.kernel.org
Cc: srinivas.eeda@oracle.com
Cc: stable
Cc: x86-ml
Link: https://lkml.kernel.org/r/20181210163725.95977-1-chao.wang@ucloud.cn
08 Jan, 2019
1 commit
-
dma_zalloc_coherent() is no longer needed as it has no users because
dma_alloc_coherent() already zeroes out memory for us.The Coccinelle grammar rule that used to check for dma_alloc_coherent()
+ memset() is modified so that it just tells the user that the memset is
not needed anymore.Suggested-by: Christoph Hellwig
Signed-off-by: Luis Chamberlain
Signed-off-by: Christoph Hellwig
06 Jan, 2019
13 commits
-
Remove the dot-prefixing since it is just a matter of the
.gitignore file.Signed-off-by: Masahiro Yamada
-
You do not have to use define ... endef for filechk_* rules.
For simple cases, the use of assignment looks cleaner, IMHO.
I updated the usage for scripts/Kbuild.include in case somebody
misunderstands the 'define ... endif' is the requirement.Signed-off-by: Masahiro Yamada
Acked-by: Heiko Carstens -
Some time ago, Sam pointed out a certain degree of overwrap between
generic-y and mandatory-y. (https://lkml.org/lkml/2017/7/10/121)I tweaked the meaning of mandatory-y a little bit; now it defines the
minimum set of ASM headers that all architectures must have.If arch does not have specific implementation of a mandatory header,
Kbuild will let it fallback to the asm-generic one by automatically
generating a wrapper. This will allow to drop lots of redundant
generic-y defines.Previously, "mandatory" was used in the context of UAPI, but I guess
this can be extended to kernel space ASM headers.Suggested-by: Sam Ravnborg
Signed-off-by: Masahiro Yamada
Acked-by: Sam Ravnborg -
filechk_* rules often consist of multiple 'echo' lines. They must be
surrounded with { } or ( ) to work correctly. Otherwise, only the
string from the last 'echo' would be written into the target.Let's take care of that in the 'filechk' in scripts/Kbuild.include
to clean up filechk_* rules.Signed-off-by: Masahiro Yamada
-
Since commit 9c2af1c7377a ("kbuild: add .DELETE_ON_ERROR special
target"), the target file is automatically deleted on failure.The boilerplate code
... || { rm -f $@; false; }
is unneeded.
Signed-off-by: Masahiro Yamada
-
Commit 3a2429e1faf4 ("kbuild: change if_changed_rule for multi-line
recipe") and commit 4f0e3a57d6eb ("kbuild: Add support for DT binding
schema checks") came in via different sub-systems.This is a follow-up cleanup.
Signed-off-by: Masahiro Yamada
-
The only/last user of UIMAGE_IN/OUT was removed by commit 4722a3e6b716
("microblaze: fix multiple bugs in arch/microblaze/boot/Makefile").The input and output should always be $< and $@.
Signed-off-by: Masahiro Yamada
-
Currently, CONFIG_JUMP_LABEL just means "I _want_ to use jump label".
The jump label is controlled by HAVE_JUMP_LABEL, which is defined
like this:#if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL)
# define HAVE_JUMP_LABEL
#endifWe can improve this by testing 'asm goto' support in Kconfig, then
make JUMP_LABEL depend on CC_HAS_ASM_GOTO.Ugly #ifdef HAVE_JUMP_LABEL will go away, and CONFIG_JUMP_LABEL will
match to the real kernel capability.Signed-off-by: Masahiro Yamada
Acked-by: Michael Ellerman (powerpc)
Tested-by: Sedat Dilek -
As mentioned in the info pages of gas, the '.align' pseudo op's
interpretation of the alignment value is architecture specific.
It might either be a byte value or taken to the power of two.On ARM it's actually the latter which leads to unnecessary large
alignments of 16 bytes for 32 bit builds or 256 bytes for 64 bit
builds.Fix this by switching to '.balign' instead which is consistent
across all architectures.Signed-off-by: Mathias Krause
Cc: Catalin Marinas
Cc: Will Deacon
Signed-off-by: Masahiro Yamada -
Coccinelle doesn't always have access to the values of named
(#define) constants, and they may likely often be bound to true
and false values anyway, resulting in false positives. So stop
warning about them.Signed-off-by: Julia Lawall
Signed-off-by: Masahiro Yamada -
Avoid reporting on the use of an iterator index variable when
the variable is redeclared.Signed-off-by: Julia Lawall
Signed-off-by: Masahiro Yamada -
This has never been used.
Signed-off-by: Masahiro Yamada
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Pull trivial vfs updates from Al Viro:
"A few cleanups + Neil's namespace_unlock() optimization"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
exec: make prepare_bprm_creds static
genheaders: %-s had been there since v6; %-*s - since v7
VFS: use synchronize_rcu_expedited() in namespace_unlock()
iov_iter: reduce code duplication
05 Jan, 2019
3 commits
-
As per Documentation/process/submitting-patches, Co-developed-by is a
valid signature.This commit removes the warning.
Link: http://lkml.kernel.org/r/1544808928-20002-3-git-send-email-jorge.ramirez-ortiz@linaro.org
Signed-off-by: Jorge Ramirez-Ortiz
Cc: Greg Kroah-Hartman
Cc: Himanshu Jha
Cc: Joe Perches
Cc: Jonathan Cameron
Cc: Jonathan Corbet
Cc: Niklas Cassel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A bug is present in GDB which causes early string termination when
parsing variables. This has been reported [0], but we should ensure
that we can support at least basic printing of the core kernel strings.For current gdb version (has been tested with 7.3 and 8.1), 'lx-version'
only prints one character.(gdb) lx-version
L(gdb)This can be fixed by casting 'linux_banner' as (char *).
(gdb) lx-version
Linux version 4.19.0-rc1+ (changbin@acer) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21 SMP Sat Sep 1 21:43:30 CST 2018[0] https://sourceware.org/bugzilla/show_bug.cgi?id=20077
[kbingham@kernel.org: add detail to commit message]
Link: http://lkml.kernel.org/r/20181111162035.8356-1-kieran.bingham@ideasonboard.com
Fixes: 2d061d999424 ("scripts/gdb: add version command")
Signed-off-by: Du Changbin
Signed-off-by: Kieran Bingham
Acked-by: Jan Kiszka
Cc: Jan Kiszka
Cc: Jason Wessel
Cc: Daniel Thompson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
These declarations should generally be static const to avoid poor
compilation and runtime performance where compilers tend to initialize
the const declaration for every call instead of using .rodata for the
string.Miscellanea:
- Convert spaces to tabs for indentation in 2 adjacent checks
Link: http://lkml.kernel.org/r/10ea5f4b087dc911e41e187a4a2b5e79c7529aa3.camel@perches.com
Signed-off-by: Joe Perches
Cc: Rasmus Villemoes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jan, 2019
1 commit
-
Pull tracing updates from Steven Rostedt:
- Rework of the kprobe/uprobe and synthetic events to consolidate all
the dynamic event code. This will make changes in the future easier.- Partial rewrite of the function graph tracing infrastructure. This
will allow for multiple users of hooking onto functions to get the
callback (return) of the function. This is the ground work for having
kprobes and function graph tracer using one code base.- Clean up of the histogram code that will facilitate adding more
features to the histograms in the future.- Addition of str_has_prefix() and a few use cases. There currently is
a similar function strstart() that is used in a few places, but only
returns a bool and not a length. These instances will be removed in
the future to use str_has_prefix() instead.- A few other various clean ups as well.
* tag 'trace-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (57 commits)
tracing: Use the return of str_has_prefix() to remove open coded numbers
tracing: Have the historgram use the result of str_has_prefix() for len of prefix
tracing: Use str_has_prefix() instead of using fixed sizes
tracing: Use str_has_prefix() helper for histogram code
string.h: Add str_has_prefix() helper function
tracing: Make function ‘ftrace_exports’ static
tracing: Simplify printf'ing in seq_print_sym
tracing: Avoid -Wformat-nonliteral warning
tracing: Merge seq_print_sym_short() and seq_print_sym_offset()
tracing: Add hist trigger comments for variable-related fields
tracing: Remove hist trigger synth_var_refs
tracing: Use hist trigger's var_ref array to destroy var_refs
tracing: Remove open-coding of hist trigger var_ref management
tracing: Use var_refs[] for hist trigger reference checking
tracing: Change strlen to sizeof for hist trigger static strings
tracing: Remove unnecessary hist trigger struct field
tracing: Fix ftrace_graph_get_ret_stack() to use task and not current
seq_buf: Use size_t for len in seq_buf_puts()
seq_buf: Make seq_buf_puts() null-terminate the buffer
arm64: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack
...
30 Dec, 2018
3 commits
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Pull Kconfig updates from Masahiro Yamada:
- support -y option for merge_config.sh to avoid downgrading =y to =m
- remove S_OTHER symbol type, and touch include/config/*.h files correctly
- fix file name and line number in lexer warnings
- fix memory leak when EOF is encountered in quotation
- resolve all shift/reduce conflicts of the parser
- warn no new line at end of file
- make 'source' statement more strict to take only string literal
- rewrite the lexer and remove the keyword lookup table
- convert to SPDX License Identifier
- compile C files independently instead of including them from zconf.y
- fix various warnings of gconfig
- misc cleanups
* tag 'kconfig-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (39 commits)
kconfig: surround dbg_sym_flags with #ifdef DEBUG to fix gconf warning
kconfig: split images.c out of qconf.cc/gconf.c to fix gconf warnings
kconfig: add static qualifiers to fix gconf warnings
kconfig: split the lexer out of zconf.y
kconfig: split some C files out of zconf.y
kconfig: convert to SPDX License Identifier
kconfig: remove keyword lookup table entirely
kconfig: update current_pos in the second lexer
kconfig: switch to ASSIGN_VAL state in the second lexer
kconfig: stop associating kconf_id with yylval
kconfig: refactor end token rules
kconfig: stop supporting '.' and '/' in unquoted words
treewide: surround Kconfig file paths with double quotes
microblaze: surround string default in Kconfig with double quotes
kconfig: use T_WORD instead of T_VARIABLE for variables
kconfig: use specific tokens instead of T_ASSIGN for assignments
kconfig: refactor scanning and parsing "option" properties
kconfig: use distinct tokens for type and default properties
kconfig: remove redundant token defines
kconfig: rename depends_list to comment_option_list
... -
Pull Kbuild updates from Masahiro Yamada:
"Kbuild core:
- remove unneeded $(call cc-option,...) switches
- consolidate Clang compiler flags into CLANG_FLAGS
- announce the deprecation of SUBDIRS
- fix single target build for external module
- simplify the dependencies of 'prepare' stage targets
- allow fixdep to directly write to .*.cmd files
- simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
- change if_changed_rule to accept multi-line recipe
- move .SECONDARY special target to scripts/Kbuild.include
- remove redundant 'set -e'
- improve parallel execution for CONFIG_HEADERS_CHECK
- misc cleanupsTreewide fixes and cleanups
- set Clang flags correctly for PowerPC boot images
- fix UML build error with CONFIG_GCC_PLUGINS
- remove unneeded patterns from .gitignore files
- refactor firmware/Makefile
- remove unneeded rules for *offsets.s
- avoid unneeded regeneration of intermediate .s files
- clean up ./KbuildModpost:
- remove unused -M, -K options
- fix false positive warnings about section mismatch
- use simple devtable lookup instead of linker magic
- misc cleanupsCoccinelle:
- relax boolinit.cocci checks for overall consistency
- fix warning messages of boolinit.cocciOther tools:
- improve -dirty check of scripts/setlocalversion
- add a tool to generate compile_commands.json from .*.cmd files"* tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
kbuild: remove unused cmd_gentimeconst
kbuild: remove $(obj)/ prefixes in ./Kbuild
treewide: add intermediate .s files to targets
treewide: remove explicit rules for *offsets.s
firmware: refactor firmware/Makefile
firmware: remove unnecessary patterns from .gitignore
scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore
um: remove unused filechk_gen_header in Makefile
scripts: add a tool to produce a compile_commands.json file
kbuild: add -Werror=implicit-int flag unconditionally
kbuild: add -Werror=strict-prototypes flag unconditionally
kbuild: add -fno-PIE flag unconditionally
scripts: coccinelle: Correct warning message
scripts: coccinelle: only suggest true/false in files that already use them
kbuild: handle part-of-module correctly for *.ll and *.symtypes
kbuild: refactor part-of-module
kbuild: refactor quiet_modtag
kbuild: remove redundant quiet_modtag for $(obj-m)
kbuild: refactor Makefile.asm-generic
user/Makefile: Fix typo and capitalization in comment section
... -
Pull documentation update from Jonathan Corbet:
"A fairly normal cycle for documentation stuff. We have a new document
on perf security, more Italian translations, more improvements to the
memory-management docs, improvements to the pathname lookup
documentation, and the usual array of smaller fixes.As is often the case, there are a few reaches outside of
Documentation/ to adjust kerneldoc comments"* tag 'docs-5.0' of git://git.lwn.net/linux: (38 commits)
docs: improve pathname-lookup document structure
configfs: fix wrong name of struct in documentation
docs/mm-api: link slab_common.c to "The Slab Cache" section
slab: make kmem_cache_create{_usercopy} description proper kernel-doc
doc:process: add links where missing
docs/core-api: make mm-api.rst more structured
x86, boot: documentation whitespace fixup
Documentation: devres: note checking needs when converting
doc:it: add some process/* translations
doc:it: fixes in process/1.Intro
Documentation: convert path-lookup from markdown to resturctured text
Documentation/admin-guide: update admin-guide index.rst
Documentation/admin-guide: introduce perf-security.rst file
scripts/kernel-doc: Fix struct and struct field attribute processing
Documentation: dev-tools: Fix typos in index.rst
Correct gen_init_cpio tool's documentation
Document /proc/pid PID reuse behavior
Documentation: update path-lookup.md for parallel lookups
Documentation: Use "while" instead of "whilst"
dmaengine: Add mailing list address to the documentation
...
29 Dec, 2018
8 commits
-
Pull Devicetree updates from Rob Herring:
"The biggest highlight here is the start of using json-schema for DT
bindings. Being able to validate bindings has been discussed for years
with little progress.- Initial support for DT bindings using json-schema language. This is
the start of converting DT bindings from free-form text to a
structured format.- Reworking of initrd address initialization. This moves to using the
phys address instead of virt addr in the DT parsing code. This
rework was motivated by CONFIG_DEV_BLK_INITRD causing unnecessary
rebuilding of lots of files.- Fix stale phandle entries in phandle cache
- DT overlay validation improvements. This exposed several memory
leak bugs which have been fixed.- Use node name and device_type helper functions in DT code
- Last remaining conversions to using %pOFn printk specifier instead
of device_node.name directly- Create new common RTC binding doc and move all trivial RTC devices
out of trivial-devices.txt.- New bindings for Freescale MAG3110 magnetometer, Cadence Sierra
PHY, and Xen shared memory- Update dtc to upstream version v1.4.7-57-gf267e674d145"
* tag 'devicetree-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (68 commits)
of: __of_detach_node() - remove node from phandle cache
of: of_node_get()/of_node_put() nodes held in phandle cache
gpio-omap.txt: add reg and interrupts properties
dt-bindings: mrvl,intc: fix a trivial typo
dt-bindings: iio: magnetometer: add dt-bindings for freescale mag3110
dt-bindings: Convert trivial-devices.txt to json-schema
dt-bindings: arm: mrvl: amend Browstone compatible string
dt-bindings: arm: Convert Tegra board/soc bindings to json-schema
dt-bindings: arm: Convert ZTE board/soc bindings to json-schema
dt-bindings: arm: Add missing Xilinx boards
dt-bindings: arm: Convert Xilinx board/soc bindings to json-schema
dt-bindings: arm: Convert VIA board/soc bindings to json-schema
dt-bindings: arm: Convert ST STi board/soc bindings to json-schema
dt-bindings: arm: Convert SPEAr board/soc bindings to json-schema
dt-bindings: arm: Convert CSR SiRF board/soc bindings to json-schema
dt-bindings: arm: Convert QCom board/soc bindings to json-schema
dt-bindings: arm: Convert TI nspire board/soc bindings to json-schema
dt-bindings: arm: Convert TI davinci board/soc bindings to json-schema
dt-bindings: arm: Convert Calxeda board/soc bindings to json-schema
dt-bindings: arm: Convert Altera board/soc bindings to json-schema
... -
New declarations and identifier (__always_inline).
Link: http://lkml.kernel.org/r/154505048571.504.18330420599768007443.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai
Cc: Masahiro Yamada
Cc: Constantine Shulyupin
Cc: Kirill Tkhai
Cc: Joey Pabalinas
Cc: Matthew Wilcox
Cc: Arend van Spriel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a script that will run spdxcheck.py through a couple of self tests to
simplify validation in the future. The tests are run for both Python 2
and Python 3 to make sure all changes to the script remain compatible
across both versions.The script tests a regular text file (Makefile) for basic sanity checks
and then runs it on a binary file (Documentation/logo.gif) to make sure it
works in both cases. It also tests opening files passed on the command
line as well as piped files read from standard input. Finally a run on
the complete tree will be performed to catch any other potential issues.Link: http://lkml.kernel.org/r/20181212131210.28024-2-thierry.reding@gmail.com
Signed-off-by: Thierry Reding
Thomas Gleixner
Cc: Jonathan Corbet
Cc: Joe Perches
Cc: Jeremy Cline
Cc: Uwe Kleine-König
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is to track dynamic amount of stack growth for aarch64, so it is
possible to print out offensive functions that may consume too much stack.
For example,0xffff2000084d1270 try_to_unmap_one [vmlinux]: Dynamic (0xcf0)
0xffff200008538358 migrate_page_move_mapping [vmlinux]: Dynamic (0xc60)
0xffff2000081276c8 copy_process.isra.2 [vmlinux]: Dynamic (0xb20)
0xffff200008424958 show_free_areas [vmlinux]: Dynamic (0xb40)
0xffff200008545178 __split_huge_pmd_locked [vmlinux]: Dynamic (0xb30)
0xffff200008555120 collapse_shmem [vmlinux]: Dynamic (0xbc0)
0xffff20000862e0d0 do_direct_IO [vmlinux]: Dynamic (0xb70)
0xffff200008cc0aa0 md_do_sync [vmlinux]: Dynamic (0xb90)Link: http://lkml.kernel.org/r/20181208025143.39363-1-cai@lca.pw
Signed-off-by: Qian Cai
Cc: Catalin Marinas
Cc: Will Deacon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Running something like:
decodecode vmlinux .
leads to interested results where not only the leading "." gets stripped
from the displayed paths, but also anywhere in the string, displaying
something like:kvm_vcpu_check_block (arch/arm64/kvm/virt/kvm/kvm_mainc:2141)
which doesn't help further processing.
Fix it by only stripping the base path if it is a prefix of the path.
Link: http://lkml.kernel.org/r/20181210174659.31054-3-marc.zyngier@arm.com
Signed-off-by: Marc Zyngier
Cc: Will Deacon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When running decodecode natively on arm64, ARCH is likely not to be set,
and we end-up with .4byte instead of .inst when generating the
disassembly.Similar effects would occur if running natively on a 32bit ARM platform,
although that's even less popular.A simple workaround is to populate ARCH when it is not set and that we're
running on an arm/arm64 system.Link: http://lkml.kernel.org/r/20181210174659.31054-2-marc.zyngier@arm.com
Signed-off-by: Marc Zyngier
Acked-by: Will Deacon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Since __LINE__ is part of the symbol created by __ADDRESSABLE, almost
any change causes those symbols to disappear and get reincarnated, e.g.add/remove: 4/4 grow/shrink: 0/3 up/down: 32/-171 (-139)
Function old new delta
__addressable_tracing_set_default_clock8649 - 8 +8
__addressable_tracer_init_tracefs8631 - 8 +8
__addressable_ftrace_dump8383 - 8 +8
__addressable_clear_boot_tracer8632 - 8 +8
__addressable_tracing_set_default_clock8650 8 - -8
__addressable_tracer_init_tracefs8632 8 - -8
__addressable_ftrace_dump8384 8 - -8
__addressable_clear_boot_tracer8633 8 - -8
trace_default_header 663 642 -21
tracing_mark_raw_write 406 355 -51
tracing_mark_write 624 557 -67
Total: Before=63889, After=63750, chg -0.22%They're small and in .discard, so ignore them, leading to more useful
add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-139 (-139)
Function old new delta
trace_default_header 663 642 -21
tracing_mark_raw_write 406 355 -51
tracing_mark_write 624 557 -67
Total: Before=63721, After=63582, chg -0.22%Link: http://lkml.kernel.org/r/20181102210030.8383-1-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes
Reviewed-by: Andy Shevchenko
Cc: Alexey Dobriyan
Cc: Ingo Molnar
Cc: Dominik Brodowski
Cc: Maninder Singh
Cc: Matteo Croce
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This commit splits the current CONFIG_KASAN config option into two:
1. CONFIG_KASAN_GENERIC, that enables the generic KASAN mode (the one
that exists now);
2. CONFIG_KASAN_SW_TAGS, that enables the software tag-based KASAN mode.The name CONFIG_KASAN_SW_TAGS is chosen as in the future we will have
another hardware tag-based KASAN mode, that will rely on hardware memory
tagging support in arm64.With CONFIG_KASAN_SW_TAGS enabled, compiler options are changed to
instrument kernel files with -fsantize=kernel-hwaddress (except the ones
for which KASAN_SANITIZE := n is set).Both CONFIG_KASAN_GENERIC and CONFIG_KASAN_SW_TAGS support both
CONFIG_KASAN_INLINE and CONFIG_KASAN_OUTLINE instrumentation modes.This commit also adds empty placeholder (for now) implementation of
tag-based KASAN specific hooks inserted by the compiler and adjusts
common hooks implementation.While this commit adds the CONFIG_KASAN_SW_TAGS config option, this option
is not selectable, as it depends on HAVE_ARCH_KASAN_SW_TAGS, which we will
enable once all the infrastracture code has been added.Link: http://lkml.kernel.org/r/b2550106eb8a68b10fefbabce820910b115aa853.1544099024.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov
Reviewed-by: Andrey Ryabinin
Reviewed-by: Dmitry Vyukov
Cc: Christoph Lameter
Cc: Mark Rutland
Cc: Will Deacon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Dec, 2018
4 commits
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Fix the following warning:
no previous prototype for ‘dbg_sym_flags’ [-Wmissing-prototypes]
Signed-off-by: Masahiro Yamada
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Currently, images.c is included by qconf.cc and gconf.c.
qconf.cc uses all of xpm_* arrays, but gconf.c only some of them.
Hence, lots of "... defined but not used" warnings are displayed
while compiling gconf.cSplitting out images.c fixes the warnings.
Signed-off-by: Masahiro Yamada
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Add "static" to functions that are locally used in gconf.c
This fixes some "no previous prototype for ..." warnings.Signed-off-by: Masahiro Yamada
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Compile zconf.lex.c independently of the other files.
Signed-off-by: Masahiro Yamada