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2018-07-18kbuild: Add build salt to the kernel and modulesLaura Abbott1-0/+3
In Fedora, the debug information is packaged separately (foo-debuginfo) and can be installed separately. There's been a long standing issue where only one version of a debuginfo info package can be installed at a time. There's been an effort for Fedora for parallel debuginfo to rectify this problem. Part of the requirement to allow parallel debuginfo to work is that build ids are unique between builds. The existing upstream rpm implementation ensures this by re-calculating the build-id using the version and release as a seed. This doesn't work 100% for the kernel because of the vDSO which is its own binary and doesn't get updated when embedded. Fix this by adding some data in an ELF note for both the kernel and modules. The data is controlled via a Kconfig option so distributions can set it to an appropriate value to ensure uniqueness between builds. Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18kbuild: verify that $DEPMOD is installedRandy Dunlap1-1/+7
Verify that 'depmod' ($DEPMOD) is installed. This is a partial revert of commit 620c231c7a7f ("kbuild: do not check for ancient modutils tools"). Also update Documentation/process/changes.rst to refer to kmod instead of module-init-tools. Fixes kernel bugzilla #198965: https://bugzilla.kernel.org/show_bug.cgi?id=198965 Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi> Cc: Lucas De Marchi <lucas.de.marchi@gmail.com> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Jessica Yu <jeyu@kernel.org> Cc: Chih-Wei Huang <cwhuang@linux.org.tw> Cc: stable@vger.kernel.org # any kernel since 2012 Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18kbuild: move bin2c back to scripts/ from scripts/basic/Masahiro Yamada5-2/+2
Commit 8370edea81e3 ("bin2c: move bin2c in scripts/basic") moved bin2c to the scripts/basic/ directory, incorrectly stating "Kexec wants to use bin2c and it wants to use it really early in the build process. See arch/x86/purgatory/ code in later patches." Commit bdab125c9301 ("Revert "kexec/purgatory: Add clean-up for purgatory directory"") and commit d6605b6bbee8 ("x86/build: Remove unnecessary preparation for purgatory") removed the redundant purgatory build magic entirely. That means that the move of bin2c was unnecessary in the first place. fixdep is the only host program that deserves to sit in the scripts/basic/ directory. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18Coccinelle: add atomic_as_refcounter scriptElena Reshetova1-0/+129
atomic_as_refcounter.cocci script allows detecting cases when refcount_t type and API should be used instead of atomic_t. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-16scripts/tags.sh: Add BPF_CALLConstantine Shulyupin1-0/+1
Signed-off-by: Constantine Shulyupin <const@MakeLinux.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-16Merge 4.18-rc5 into usb-nextGreg Kroah-Hartman11-27/+8
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-16Merge 4.18-rc5 into char-misc-nextGreg Kroah-Hartman15-37/+19
We want the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-14checkpatch: fix duplicate invalid vsprintf pointer extension '%p<foo>' messagesJoe Perches1-3/+3
Multiline statements with invalid %p<foo> uses produce multiple warnings. Fix that. e.g.: $ cat t_block.c void foo(void) { MY_DEBUG(drv->foo, "%pk", foo->boo); } $ ./scripts/checkpatch.pl -f t_block.c WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 #1: FILE: t_block.c:1: +void foo(void) WARNING: Invalid vsprintf pointer extension '%pk' #3: FILE: t_block.c:3: + MY_DEBUG(drv->foo, + "%pk", + foo->boo); WARNING: Invalid vsprintf pointer extension '%pk' #3: FILE: t_block.c:3: + MY_DEBUG(drv->foo, + "%pk", + foo->boo); total: 0 errors, 3 warnings, 6 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. t_block.c has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Link: http://lkml.kernel.org/r/9e8341bbe4c9877d159cb512bb701043cbfbb10b.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: "Tobin C. Harding" <me@tobin.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-13Merge tag 'kbuild-fixes-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds9-23/+4
Pull Kbuild fixes from Masahiro Yamada: - update Kbuild and Kconfig documents - sanitize -I compiler option handling - update extract-vmlinux script to recognize LZ4 and ZSTD - fix tools Makefiles - update tags.sh to handle __ro_after_init - suppress warnings in case getconf does not recognize LFS_* parameters * tag 'kbuild-fixes-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: suppress warnings from 'getconf LFS_*' scripts/tags.sh: add __ro_after_init tools: build: Use HOSTLDFLAGS with fixdep tools: build: Fixup host c flags tools build: fix # escaping in .cmd files for future Make scripts: teach extract-vmlinux about LZ4 and ZSTD kbuild: remove duplicated comments about PHONY kbuild: .PHONY is not a variable, but PHONY is kbuild: do not drop -I without parameter kbuild: document the KBUILD_KCONFIG env. variable kconfig: update user kconfig tools doc. kbuild: delete INSTALL_FW_PATH from kbuild documentation kbuild: update ARCH alias info for sparc kbuild: update ARCH alias info for sh
2018-07-13scripts/tags.sh: add __ro_after_initConstantine Shulyupin1-1/+1
Signed-off-by: Constantine Shulyupin <const@MakeLinux.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-08scripts: teach extract-vmlinux about LZ4 and ZSTDAdam Borowski1-0/+2
Note that the LZ4 signature is different than that of modern LZ4 as we use the "legacy" format which suffers from some downsides like inability to disable compression. Signed-off-by: Adam Borowski <kilobyte@angband.pl> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-07ver_linux: Do not check for ver_linux pattern in version functionAlexander Kapshuk1-1/+1
Checking whether output of commands matches the ver_linux pattern in the version function is original shell implementation legacy code. When the original implementation failed to locate a particular utility, it generated error output along the lines of: ver_linux:line number: command not found. The awk implementation, does not contain the name of the script within the body of the error message returned by the subshell when a given utility fails to be located. The error message returned is along the lines of: sh: name of utility: command not found Safeguarding against the ver_linux pattern being found in the output being parsed may thus be safely omitted. Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-07ver_linux: Process input coming from procmaps that matches libc onlyAlexander Kapshuk1-5/+7
Currently, input coming from /proc/self/maps is split into fields without checking whether or not it matches libc.so. This is not efficient. All text processing should only be performed on lines of input that match libc.so. Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-06kbuild: remove duplicated comments about PHONYMasahiro Yamada6-21/+0
The comment is the same as in the top-level Makefile. Also, the comments contain typos: - the .PHONY variable -> the PHONY variable - se we can ... -> so we can ... Instead of fixing the typos, just remove the duplicated comments. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-06kbuild: do not drop -I without parameterMasahiro Yamada1-1/+1
The comment line for addtree says "skip if -I has no parameter". What it actually does is "drop if -I has no parameter". For example, if you have the compiler flag '-I foo' (a space between), it will be converted to 'foo'. This completely changes the meaning. What we want is, "do nothing" for -I without parameter so that '-I foo' is kept as-is. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-02gcc-plugins: remove unused GCC_PLUGIN_SUBDIRMasahiro Yamada2-7/+1
GCC_PLUGIN_SUBDIR has never been used. If you really need this in the future, please re-add it then. For now, the code is unused. Remove. 'export HOSTLIBS' is not necessary either. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Kees Cook <keescook@chromium.org>
2018-07-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds1-1/+1
Pull networking fixes from David Miller: 1) Verify netlink attributes properly in nf_queue, from Eric Dumazet. 2) Need to bump memory lock rlimit for test_sockmap bpf test, from Yonghong Song. 3) Fix VLAN handling in lan78xx driver, from Dave Stevenson. 4) Fix uninitialized read in nf_log, from Jann Horn. 5) Fix raw command length parsing in mlx5, from Alex Vesker. 6) Cleanup loopback RDS connections upon netns deletion, from Sowmini Varadhan. 7) Fix regressions in FIB rule matching during create, from Jason A. Donenfeld and Roopa Prabhu. 8) Fix mpls ether type detection in nfp, from Pieter Jansen van Vuuren. 9) More bpfilter build fixes/adjustments from Masahiro Yamada. 10) Fix XDP_{TX,REDIRECT} flushing in various drivers, from Jesper Dangaard Brouer. 11) fib_tests.sh file permissions were broken, from Shuah Khan. 12) Make sure BH/preemption is disabled in data path of mac80211, from Denis Kenzior. 13) Don't ignore nla_parse_nested() return values in nl80211, from Johannes berg. 14) Properly account sock objects ot kmemcg, from Shakeel Butt. 15) Adjustments to setting bpf program permissions to read-only, from Daniel Borkmann. 16) TCP Fast Open key endianness was broken, it always took on the host endiannness. Whoops. Explicitly make it little endian. From Yuching Cheng. 17) Fix prefix route setting for link local addresses in ipv6, from David Ahern. 18) Potential Spectre v1 in zatm driver, from Gustavo A. R. Silva. 19) Various bpf sockmap fixes, from John Fastabend. 20) Use after free for GRO with ESP, from Sabrina Dubroca. 21) Passing bogus flags to crypto_alloc_shash() in ipv6 SR code, from Eric Biggers. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (87 commits) qede: Adverstise software timestamp caps when PHC is not available. qed: Fix use of incorrect size in memcpy call. qed: Fix setting of incorrect eswitch mode. qed: Limit msix vectors in kdump kernel to the minimum required count. ipvlan: call dev_change_flags when ipvlan mode is reset ipv6: sr: fix passing wrong flags to crypto_alloc_shash() net: fix use-after-free in GRO with ESP tcp: prevent bogus FRTO undos with non-SACK flows bpf: sockhash, add release routine bpf: sockhash fix omitted bucket lock in sock_close bpf: sockmap, fix smap_list_map_remove when psock is in many maps bpf: sockmap, fix crash when ipv6 sock is added net: fib_rules: bring back rule_exists to match rule during add hv_netvsc: split sub-channel setup into async and sync net: use dev_change_tx_queue_len() for SIOCSIFTXQLEN atm: zatm: Fix potential Spectre v1 s390/qeth: consistently re-enable device features s390/qeth: don't clobber buffer on async TX completion s390/qeth: avoid using is_multicast_ether_addr_64bits on (u8 *)[6] s390/qeth: fix race when setting MAC address ...
2018-07-02scripts/documentation-file-ref-check: ignore sched-pelt false positiveMauro Carvalho Chehab1-0/+3
When Documentation/scheduler/sched-pelt.c is compiled, it generates a file called Documentation/scheduler/sched-pelt. As this only exists after building such tool, we need an explict check to remove the false-positive. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-07-02scripts/documentation-file-ref-check: remove some false positivesMauro Carvalho Chehab1-0/+3
There are several false positives at tcm_mod_builder.txt: Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000 Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000 Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_base.h Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../include/target/target_core_fabric_ops.h Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_fabric.c Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_fabric.h Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_configfs.c Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/Kbuild Documentation/target/tcm_mod_builder.txt: mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/Kconfig Ignore them. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-07-02usb: typec: Bus type for alternate modesHeikki Krogerus2-0/+17
Introducing a simple bus for the alternate modes. Bus allows binding drivers to the discovered alternate modes the partners support. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Tested-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-02scripts: Add ppc64le support for checkstack.plBreno Leitao1-7/+4
64-bit ELF v2 ABI specification for POWER describes, on section "General Stack Frame Requirements", that the stack should use the following instructions when compiled with backchain: mflr r0 std r0, 16(r1) stdu r1, -XX(r1) Where XX is the frame size for that function, and this is the value checkstack.pl will find the stack size for each function. This patch also simplifies the entire Powerpc section, since just two type of instructions are used, 'stdu' for 64 bits and 'stwu' for 32 bits platform. Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-06-30Merge tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds4-4/+11
Pull Kbuild fixes from Masahiro Yamada: - introduce __diag_* macros and suppress -Wattribute-alias warnings from GCC 8 - fix stack protector test script for x86_64 - fix line number handling in Kconfig - document that '#' starts a comment in Kconfig - handle P_SYMBOL property in dump debugging of Kconfig - correct help message of LD_DEAD_CODE_DATA_ELIMINATION - fix occasional segmentation faults in Kconfig * tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: loop boundary condition fix kbuild: reword help of LD_DEAD_CODE_DATA_ELIMINATION kconfig: handle P_SYMBOL in print_symbol() kconfig: document Kconfig source file comments kconfig: fix line numbers for if-entries in menu tree stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y powerpc: Remove -Wattribute-alias pragmas disable -Wattribute-alias warning for SYSCALL_DEFINEx() kbuild: add macro for controlling warnings to linux/compiler.h
2018-06-28kconfig: loop boundary condition fixJerry James1-1/+1
If buf[-1] just happens to hold the byte 0x0A, then nread can wrap around to (size_t)-1, leading to invalid memory accesses. This has caused segmentation faults when trying to build the latest kernel snapshots for i686 in Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=1592374 Signed-off-by: Jerry James <loganjerry@gmail.com> [alexpl@fedoraproject.org: reformatted patch for submission] Signed-off-by: Alexander Ploumistos <alexpl@fedoraproject.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-06-28kconfig: handle P_SYMBOL in print_symbol()Dirk Gouders2-0/+7
Each symbol has a property of type P_SYMBOL since commit 59e89e3ddf85 (kconfig: save location of config symbols). Handle those properties in print_symbol(). Further, place a pointer to print_symbol() in the comment above the list of known property type. Signed-off-by: Dirk Gouders <dirk@gouders.net> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-06-28bpfilter: check compiler capability in KconfigMasahiro Yamada1-1/+1
With the brand-new syntax extension of Kconfig, we can directly check the compiler capability in the configuration phase. If the cc-can-link.sh fails, the BPFILTER_UMH is automatically hidden by the dependency. I also deleted 'default n', which is no-op. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-27checkpatch: remove warning for 'old' stable@kernel.org addressLinus Torvalds1-6/+0
It may not be the actual real stable mailing list address, but the stable scripts to actually pick up on the traditional way to mark stable patches. There are also reasons to explicitly avoid using the actual mailing list address, since security patches with embargo dates generally do want the stable marking, but don't want tools etc to mistakenly send the patch out to the mailing list early. So don't warn for things that are still actively used and explicitly supported. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-25kconfig: fix line numbers for if-entries in menu treeDirk Gouders1-2/+2
The line numers for if-entries in the menu tree are off by one or more lines which is confusing when debugging for correctness of unrelated changes. According to the git log, commit a02f0570ae201c49 (kconfig: improve error handling in the parser) was the last one that changed that part of the parser and replaced "if_entry: T_IF expr T_EOL" by "if_entry: T_IF expr nl" but the commit message does not state why this has been done. When reverting that part of the commit, only the line numers are corrected (checked with cdebug = DEBUG_PARSE in zconf.y), otherwise the menu tree remains unchanged (checked with zconfdump() enabled in conf.c). An example for the corrected line numbers: drivers/soc/Kconfig:15:source drivers/soc/tegra/Kconfig drivers/soc/tegra/Kconfig:4:if drivers/soc/tegra/Kconfig:6:if changes to: drivers/soc/Kconfig:15:source drivers/soc/tegra/Kconfig drivers/soc/tegra/Kconfig:1:if drivers/soc/tegra/Kconfig:4:if Signed-off-by: Dirk Gouders <dirk@gouders.net> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-06-25stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=ySven Joachim1-1/+1
When building a 64-bit 4.18-rc1 kernel with a 32-bit userland, I noticed that stack protection was silently disabled. Adding -m64 in gcc-x86_64-has-stack-protector.sh fixed that, similar to what has been noticed in commit 2a61f4747eea ("stack-protector: test compiler capability in Kconfig and drop AUTO mode") for gcc-x86_32-has-stack-protector.sh. Signed-off-by: Sven Joachim <svenjoac@gmx.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-06-21tracing: Fix SKIP_STACK_VALIDATION=1 build due to bad merge with -mrecord-mcountGreg Thelen1-1/+1
Non gcc-5 builds with CONFIG_STACK_VALIDATION=y and SKIP_STACK_VALIDATION=1 fail. Example output: /bin/sh: init/.tmp_main.o: Permission denied commit 96f60dfa5819 ("trace: Use -mcount-record for dynamic ftrace"), added a mismatched endif. This causes cmd_objtool to get mistakenly set. Relocate endif to balance the newly added -record-mcount check. Link: http://lkml.kernel.org/r/20180608214746.136554-1-gthelen@google.com Fixes: 96f60dfa5819 ("trace: Use -mcount-record for dynamic ftrace") Acked-by: Andi Kleen <ak@linux.intel.com> Tested-by: David Rientjes <rientjes@google.com> Signed-off-by: Greg Thelen <gthelen@google.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2018-06-15scripts/documentation-file-ref-check: check tools/*/DocumentationMauro Carvalho Chehab1-0/+7
Some files, like tools/memory-model/README has references to a Documentation file that is locale to it. Handle references that are relative to them too. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15scripts/documentation-file-ref-check: get rid of false-positivesMauro Carvalho Chehab1-3/+18
Now that the number of broken refs are smaller, improve the logic that gets rid of false-positives. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15scripts/documentation-file-ref-check: hint: dash or underlineMauro Carvalho Chehab1-0/+6
Sometimes, people use dash instead of underline or vice-versa. Try to autocorrect it. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15scripts/documentation-file-ref-check: add a fix logic for DTMauro Carvalho Chehab1-3/+17
There are several links broken due to DT file movements. Add a hint logic to seek for those changes. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15scripts/documentation-file-ref-check: accept more wildcards at filenamesMauro Carvalho Chehab1-1/+1
at MAINTAINERS, some filename paths use '?' and things like [7,9]. So, accept more wildcards, in order to avoid false-positives. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15scripts/documentation-file-ref-check: fix help messageMauro Carvalho Chehab1-1/+1
The name of the --fix option was renamed, but it was not changed at the quick help message. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-13Merge tag 'kbuild-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds8-104/+39
Pull more Kbuild updates from Masahiro Yamada: - fix some bugs introduced by the recent Kconfig syntax extension - add some symbols about compiler information in Kconfig, such as CC_IS_GCC, CC_IS_CLANG, GCC_VERSION, etc. - test compiler capability for the stack protector in Kconfig, and clean-up Makefile - test compiler capability for GCC-plugins in Kconfig, and clean-up Makefile - allow to enable GCC-plugins for COMPILE_TEST - test compiler capability for KCOV in Kconfig and correct dependency - remove auto-detect mode of the GCOV format, which is now more nicely handled in Kconfig - test compiler capability for mprofile-kernel on PowerPC, and clean-up Makefile - misc cleanups * tag 'kbuild-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: linux/linkage.h: replace VMLINUX_SYMBOL_STR() with __stringify() kconfig: fix localmodconfig sh: remove no-op macro VMLINUX_SYMBOL() powerpc/kbuild: move -mprofile-kernel check to Kconfig Documentation: kconfig: add recommended way to describe compiler support gcc-plugins: disable GCC_PLUGIN_STRUCTLEAK_BYREF_ALL for COMPILE_TEST gcc-plugins: allow to enable GCC_PLUGINS for COMPILE_TEST gcc-plugins: test plugin support in Kconfig and clean up Makefile gcc-plugins: move GCC version check for PowerPC to Kconfig kcov: test compiler capability in Kconfig and correct dependency gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT arm64: move GCC version check for ARCH_SUPPORTS_INT128 to Kconfig kconfig: add CC_IS_CLANG and CLANG_VERSION kconfig: add CC_IS_GCC and GCC_VERSION stack-protector: test compiler capability in Kconfig and drop AUTO mode kbuild: fix endless syncconfig in case arch Makefile sets CROSS_COMPILE
2018-06-11kconfig: fix localmodconfigSam Ravnborg1-2/+2
When kconfig syntax moved to use $(FOO) for environment variables localmodconfig was not updated. Fix so it now works with the new syntax $(FOO) Fixes: 104daea149c4 ("kconfig: reference environment variables directly and remove 'option env='") Reported-by: Kevin Locke <kevin@kevinlocke.name> Reported-by: Andrei Vagin <avagin@virtuozzo.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Tested-by: Kevin Locke <kevin@kevinlocke.name> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-06-11gcc-plugins: test plugin support in Kconfig and clean up MakefileMasahiro Yamada3-57/+26
Run scripts/gcc-plugin.sh from Kconfig so that users can enable GCC_PLUGINS only when the compiler supports building plugins. Kconfig defines a new symbol, PLUGIN_HOSTCC. This will contain the compiler (g++ or gcc) used for building plugins, or empty if the plugin can not be supported at all. This allows us to remove all ugly testing in Makefile.gcc-plugins. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kees Cook <keescook@chromium.org>
2018-06-11gcc-plugins: move GCC version check for PowerPC to KconfigMasahiro Yamada1-8/+0
For PowerPC, GCC 5.2 is the requirement for GCC plugins. Move the version check to Kconfig so that the GCC plugin menus will be hidden if an older compiler is in use. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org>
2018-06-11kcov: test compiler capability in Kconfig and correct dependencyMasahiro Yamada3-14/+8
As Documentation/kbuild/kconfig-language.txt notes, 'select' should be be used with care - it forces a lower limit of another symbol, ignoring the dependency. Currently, KCOV can select GCC_PLUGINS even if arch does not select HAVE_GCC_PLUGINS. This could cause the unmet direct dependency. Now that Kconfig can test compiler capability, let's handle this in a more sophisticated way. There are two ways to enable KCOV; use the compiler that natively supports -fsanitize-coverage=trace-pc, or build the SANCOV plugin if the compiler has ability to build GCC plugins. Hence, the correct dependency for KCOV is: depends on CC_HAS_SANCOV_TRACE_PC || GCC_PLUGINS You do not need to build the SANCOV plugin if the compiler already supports -fsanitize-coverage=trace-pc. Hence, the select should be: select GCC_PLUGIN_SANCOV if !CC_HAS_SANCOV_TRACE_PC With this, GCC_PLUGIN_SANCOV is selected only when necessary, so scripts/Makefile.gcc-plugins can be cleaner. I also cleaned up Kconfig and scripts/Makefile.kcov as well. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Kees Cook <keescook@chromium.org>
2018-06-09Merge tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds1-1/+0
Pull staging/IIO updates from Greg KH: "Here is the big staging and IIO driver update for 4.18-rc1. It was delayed as I wanted to make sure the final driver deletions did not cause any major merge issues, and all now looks good. There are a lot of patches here, just over 1000. The diffstat summary shows the major changes here: 1007 files changed, 16828 insertions(+), 227770 deletions(-) Because of this, we might be close to shrinking the overall kernel source code size for two releases in a row. There was loads of work in this release cycle, primarily: - tons of ks7010 driver cleanups - lots of mt7621 driver fixes and cleanups - most driver cleanups - wilc1000 fixes and cleanups - lots and lots of IIO driver cleanups and new additions - debugfs cleanups for all staging drivers - lots of other staging driver cleanups and fixes, the shortlog has the full details. but the big user-visable things here are the removal of 3 chunks of code: - ncpfs and ipx were removed on schedule, no one has cared about this code since it moved to staging last year, and if it needs to come back, it can be reverted. - lustre file system is removed. I've ranted at the lustre developers about once a year for the past 5 years, with no real forward progress at all to clean things up and get the code into the "real" part of the kernel. Given that the lustre developers continue to work on an external tree and try to port those changes to the in-kernel tree every once in a while, this whole thing really really is not working out at all. So I'm deleting it so that the developers can spend the time working in their out-of-tree location and get things cleaned up properly to get merged into the tree correctly at a later date. Because of these file removals, you will have merge issues on some of these files (2 in the ipx code, 1 in the ncpfs code, and 1 in the atomisp driver). Just delete those files, it's a simple merge :) All of this has been in linux-next for a while with no reported problems" * tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1011 commits) staging: ipx: delete it from the tree ncpfs: remove uapi .h files ncpfs: remove Documentation ncpfs: remove compat functionality staging: ncpfs: delete it staging: lustre: delete the filesystem from the tree. staging: vc04_services: no need to save the log debufs dentries staging: vc04_services: vchiq_debugfs_log_entry can be a void * staging: vc04_services: remove struct vchiq_debugfs_info staging: vc04_services: move client dbg directory into static variable staging: vc04_services: remove odd vchiq_debugfs_top() wrapper staging: vc04_services: no need to check debugfs return values staging: mt7621-gpio: reorder includes alphabetically staging: mt7621-gpio: change gc_map to don't use pointers staging: mt7621-gpio: use GPIOF_DIR_OUT and GPIOF_DIR_IN macros instead of custom values staging: mt7621-gpio: change 'to_mediatek_gpio' to make just a one line return staging: mt7621-gpio: dt-bindings: update documentation for #interrupt-cells property staging: mt7621-gpio: update #interrupt-cells for the gpio node staging: mt7621-gpio: dt-bindings: complete documentation for the gpio staging: mt7621-dts: add missing properties to gpio node ...
2018-06-08kconfig: add CC_IS_CLANG and CLANG_VERSIONMasahiro Yamada1-14/+4
This will be useful to describe the clang version dependency. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Kees Cook <keescook@chromium.org>
2018-06-08stack-protector: test compiler capability in Kconfig and drop AUTO modeMasahiro Yamada2-11/+1
Move the test for -fstack-protector(-strong) option to Kconfig. If the compiler does not support the option, the corresponding menu is automatically hidden. If STRONG is not supported, it will fall back to REGULAR. If REGULAR is not supported, it will be disabled. This means, AUTO is implicitly handled by the dependency solver of Kconfig, hence removed. I also turned the 'choice' into only two boolean symbols. The use of 'choice' is not a good idea here, because all of all{yes,mod,no}config would choose the first visible value, while we want allnoconfig to disable as many features as possible. X86 has additional shell scripts in case the compiler supports those options, but generates broken code. I added CC_HAS_SANE_STACKPROTECTOR to test this. I had to add -m32 to gcc-x86_32-has-stack-protector.sh to make it work correctly. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kees Cook <keescook@chromium.org>
2018-06-07Merge branch 'akpm' (patches from Andrew)Linus Torvalds3-7/+28
Merge updates from Andrew Morton: - a few misc things - ocfs2 updates - v9fs updates - MM - procfs updates - lib/ updates - autofs updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) autofs: small cleanup in autofs_getpath() autofs: clean up includes autofs: comment on selinux changes needed for module autoload autofs: update MAINTAINERS entry for autofs autofs: use autofs instead of autofs4 in documentation autofs: rename autofs documentation files autofs: create autofs Kconfig and Makefile autofs: delete fs/autofs4 source files autofs: update fs/autofs4/Makefile autofs: update fs/autofs4/Kconfig autofs: copy autofs4 to autofs autofs4: use autofs instead of autofs4 everywhere autofs4: merge auto_fs.h and auto_fs4.h fs/binfmt_misc.c: do not allow offset overflow checkpatch: improve patch recognition lib/ucs2_string.c: add MODULE_LICENSE() lib/mpi: headers cleanup lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lock lib/idr.c: remove simple_ida_lock lib/bitmap.c: micro-optimization for __bitmap_complement() ...
2018-06-07checkpatch: improve patch recognitionJoe Perches1-0/+8
There are mode change and rename only patches that are unrecognized by checkpatch. Recognize them. [joe@perches.com: fix missing close parenthesis] Link: http://lkml.kernel.org/r/af44c893f6973393f2a5b11f1a8e5cd4c8bbbba5.camel@perches.com Link: http://lkml.kernel.org/r/974a407e6fa18abd5a965da39cc68986a4c4f091.1526949367.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07get_maintainer: improve patch recognitionJoe Perches1-1/+12
There are mode change and rename only patches that are unrecognized by the get_maintainer.pl script. Recognize them. Link: http://lkml.kernel.org/r/bf63101a908d0ff51948164aa60e672368066186.1526949367.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07mm: split page_type out from _mapcountMatthew Wilcox1-3/+3
We're already using a union of many fields here, so stop abusing the _mapcount and make page_type its own field. That implies renaming some of the machinery that creates PageBuddy, PageBalloon and PageKmemcg; bring back the PG_buddy, PG_balloon and PG_kmemcg names. As suggested by Kirill, make page_type a bitmask. Because it starts out life as -1 (thanks to sharing the storage with _mapcount), setting a page flag means clearing the appropriate bit. This gives us space for probably twenty or so extra bits (depending how paranoid we want to be about _mapcount underflow). Link: http://lkml.kernel.org/r/20180518194519.3820-3-willy@infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Jérôme Glisse <jglisse@redhat.com> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07scripts: use SPDX tag in get_maintainer and checkpatchJoe Perches2-3/+5
Add the appropriate SPDX tag to these scripts. Miscellanea: o Add my copyright to checkpatch Link: http://lkml.kernel.org/r/d08e49e8f6562c58a63792aa64306d1851f81f4b.camel@perches.com Signed-off-by: Joe Perches <joe@perches.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>
2018-06-07Merge tag 'devicetree-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linuxLinus Torvalds7-16/+264
Pull DeviceTree updates from Rob Herring: - Sync dtc with upstream version v1.4.6-21-g84e414b0b5bc. This adds new warnings which are either fixed or disabled by default (enabled with W=1). - Validate an untrusted offset in DT overlay function update_usages_of_a_phandle_reference - Fix a use after free error of_platform_device_destroy - Fix an off by 1 string errors in unittest - Avoid creating a struct device for OPP nodes - Update DT specific submitting-patches.txt with patch content and subject requirements. - Move some bindings to their proper subsystem locations - Add vendor prefixes for Kaohsiung, SiFive, Avnet, Wi2Wi, Logic PD, and ArcherMind - Add documentation for "no-gpio-delays" property in FSI bus GPIO master - Add compatible for r8a77990 SoC ravb ethernet block - More wack-a-mole removal of 'status' property in examples * tag 'devicetree-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (25 commits) dt-bindings: submitting-patches: add guidance on patch content and subject of: platform: stop accessing invalid dev in of_platform_device_destroy dt-bindings: net: ravb: Add support for r8a77990 SoC dt-bindings: Add vendor prefix for ArcherMind dt-bindings: fsi-master-gpio: Document "no-gpio-delays" property dt-bindings: Add vendor prefix for Logic PD of: overlay: validate offset from property fixups of: unittest: for strings, account for trailing \0 in property length field drm: rcar-du: disable dtc graph-endpoint warnings on DT overlays kbuild: disable new dtc graph and unit-address warnings scripts/dtc: Update to upstream version v1.4.6-21-g84e414b0b5bc MAINTAINERS: add keyword for devicetree overlay notifiers dt-bindings: define vendor prefix for Wi2Wi, Inc. dt-bindings: Add vendor prefix for Avnet, Inc. dt-bindings: Relocate Tegra20 memory controller bindings dt-bindings: Add "sifive" vendor prefix dt-bindings: exynos: move ADC binding to iio/adc/ directory dt-bindings: powerpc/4xx: move 4xx NDFC and EMAC bindings to subsystem directories dt-bindings: move various RNG bindings to rng/ directory dt-bindings: move various timer bindings to timer/ directory ...
2018-06-07Merge tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds1-1/+17
Pull powerpc updates from Michael Ellerman: "Notable changes: - Support for split PMD page table lock on 64-bit Book3S (Power8/9). - Add support for HAVE_RELIABLE_STACKTRACE, so we properly support live patching again. - Add support for patching barrier_nospec in copy_from_user() and syscall entry. - A couple of fixes for our data breakpoints on Book3S. - A series from Nick optimising TLB/mm handling with the Radix MMU. - Numerous small cleanups to squash sparse/gcc warnings from Mathieu Malaterre. - Several series optimising various parts of the 32-bit code from Christophe Leroy. - Removal of support for two old machines, "SBC834xE" and "C2K" ("GEFanuc,C2K"), which is why the diffstat has so many deletions. And many other small improvements & fixes. There's a few out-of-area changes. Some minor ftrace changes OK'ed by Steve, and a fix to our powernv cpuidle driver. Then there's a series touching mm, x86 and fs/proc/task_mmu.c, which cleans up some details around pkey support. It was ack'ed/reviewed by Ingo & Dave and has been in next for several weeks. Thanks to: Akshay Adiga, Alastair D'Silva, Alexey Kardashevskiy, Al Viro, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Arnd Bergmann, Balbir Singh, Cédric Le Goater, Christophe Leroy, Christophe Lombard, Colin Ian King, Dave Hansen, Fabio Estevam, Finn Thain, Frederic Barrat, Gautham R. Shenoy, Haren Myneni, Hari Bathini, Ingo Molnar, Jonathan Neuschäfer, Josh Poimboeuf, Kamalesh Babulal, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Greer, Mathieu Malaterre, Matthew Wilcox, Michael Neuling, Michal Suchanek, Naveen N. Rao, Nicholas Piggin, Nicolai Stange, Olof Johansson, Paul Gortmaker, Paul Mackerras, Peter Rosin, Pridhiviraj Paidipeddi, Ram Pai, Rashmica Gupta, Ravi Bangoria, Russell Currey, Sam Bobroff, Samuel Mendoza-Jonas, Segher Boessenkool, Shilpasri G Bhat, Simon Guo, Souptick Joarder, Stewart Smith, Thiago Jung Bauermann, Torsten Duwe, Vaibhav Jain, Wei Yongjun, Wolfram Sang, Yisheng Xie, YueHaibing" * tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (251 commits) powerpc/64s/radix: Fix missing ptesync in flush_cache_vmap cpuidle: powernv: Fix promotion from snooze if next state disabled powerpc: fix build failure by disabling attribute-alias warning in pci_32 ocxl: Fix missing unlock on error in afu_ioctl_enable_p9_wait() powerpc-opal: fix spelling mistake "Uniterrupted" -> "Uninterrupted" powerpc: fix spelling mistake: "Usupported" -> "Unsupported" powerpc/pkeys: Detach execute_only key on !PROT_EXEC powerpc/powernv: copy/paste - Mask SO bit in CR powerpc: Remove core support for Marvell mv64x60 hostbridges powerpc/boot: Remove core support for Marvell mv64x60 hostbridges powerpc/boot: Remove support for Marvell mv64x60 i2c controller powerpc/boot: Remove support for Marvell MPSC serial controller powerpc/embedded6xx: Remove C2K board support powerpc/lib: optimise PPC32 memcmp powerpc/lib: optimise 32 bits __clear_user() powerpc/time: inline arch_vtime_task_switch() powerpc/Makefile: set -mcpu=860 flag for the 8xx powerpc: Implement csum_ipv6_magic in assembly powerpc/32: Optimise __csum_partial() powerpc/lib: Adjust .balign inside string functions for PPC32 ...
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