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* kconfig: Fix automatic menu creation mem leakUlf Magnusson2018-05-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit ae7440ef0c8013d68c00dad6900e7cce5311bb1c ] expr_trans_compare() always allocates and returns a new expression, giving the following leak outline: ... *Allocate* basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); ... for (menu = parent->next; menu; menu = menu->next) { ... *Copy* dep2 = expr_copy(basedep); ... *Free copy* expr_free(dep2); } *basedep lost!* Fix by freeing 'basedep' after the loop. Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix: LEAK SUMMARY: definitely lost: 344,376 bytes in 14,349 blocks ... Summary after the fix: LEAK SUMMARY: definitely lost: 44,448 bytes in 1,852 blocks ... Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kconfig: Don't leak main menus during parsingUlf Magnusson2018-05-301-9/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit 0724a7c32a54e3e50d28e19e30c59014f61d4e2c ] If a 'mainmenu' entry appeared in the Kconfig files, two things would leak: - The 'struct property' allocated for the default "Linux Kernel Configuration" prompt. - The string for the T_WORD/T_WORD_QUOTE prompt after the T_MAINMENU token, allocated on the heap in zconf.l. To fix it, introduce a new 'no_mainmenu_stmt' nonterminal that matches if there's no 'mainmenu' and adds the default prompt. That means the prompt only gets allocated once regardless of whether there's a 'mainmenu' statement or not, and managing it becomes simple. Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix: LEAK SUMMARY: definitely lost: 344,568 bytes in 14,352 blocks ... Summary after the fix: LEAK SUMMARY: definitely lost: 344,440 bytes in 14,350 blocks ... Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tags: honor COMPILED_SOURCE with apart output directoryRobert Jarzmik2018-04-131-0/+1
| | | | | | | | | | | | | | | [ Upstream commit cbf52a3e6a8a92beec6e0c70abf4111cd8f8faf7 ] When the kernel is compiled with an "O=" argument, the object files are not in the source tree, but in the build tree. This patch fixes O= build by looking for object files in the build tree. Fixes: 923e02ecf3f8 ("scripts/tags.sh: Support compiled source") Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kbuild: Handle builtin dtb file names containing hyphensJames Hogan2018-03-181-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 55fe6da9efba102866e2fb5b40b04b6a4b26c19e upstream. cmd_dt_S_dtb constructs the assembly source to incorporate a devicetree FDT (that is, the .dtb file) as binary data in the kernel image. This assembly source contains labels before and after the binary data. The label names incorporate the file name of the corresponding .dtb file. Hyphens are not legal characters in labels, so .dtb files built into the kernel with hyphens in the file name result in errors like the following: bcm3368-netgear-cvg834g.dtb.S: Assembler messages: bcm3368-netgear-cvg834g.dtb.S:5: Error: : no such section bcm3368-netgear-cvg834g.dtb.S:5: Error: junk at end of line, first unrecognized character is `-' bcm3368-netgear-cvg834g.dtb.S:6: Error: unrecognized opcode `__dtb_bcm3368-netgear-cvg834g_begin:' bcm3368-netgear-cvg834g.dtb.S:8: Error: unrecognized opcode `__dtb_bcm3368-netgear-cvg834g_end:' bcm3368-netgear-cvg834g.dtb.S:9: Error: : no such section bcm3368-netgear-cvg834g.dtb.S:9: Error: junk at end of line, first unrecognized character is `-' Fix this by updating cmd_dt_S_dtb to transform all hyphens from the file name to underscores when constructing the labels. As of v4.16-rc2, 1139 .dts files across ARM64, ARM, MIPS and PowerPC contain hyphens in their names, but the issue only currently manifests on Broadcom MIPS platforms, as that is the only place where such files are built into the kernel. For example when CONFIG_DT_NETGEAR_CVG834G=y, or on BMIPS kernels when the dtbs target is used (in the latter case it admittedly shouldn't really build all the dtb.o files, but thats a separate issue). Fixes: 695835511f96 ("MIPS: BMIPS: rename bcm96358nb4ser to bcm6358-neufbox4-sercom") Signed-off-by: James Hogan <jhogan@kernel.org> Reviewed-by: Frank Rowand <frowand.list@gmail.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: <stable@vger.kernel.org> # 4.9+ Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* module/retpoline: Warn about missing retpoline in moduleAndi Kleen2018-02-251-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (cherry picked from commit caf7501a1b4ec964190f31f9c3f163de252273b8) There's a risk that a kernel which has full retpoline mitigations becomes vulnerable when a module gets loaded that hasn't been compiled with the right compiler or the right option. To enable detection of that mismatch at module load time, add a module info string "retpoline" at build time when the module was compiled with retpoline support. This only covers compiled C source, but assembler source or prebuilt object files are not checked. If a retpoline enabled kernel detects a non retpoline protected module at load time, print a warning and report it in the sysfs vulnerability file. [ tglx: Massaged changelog ] Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: David Woodhouse <dwmw2@infradead.org> Cc: gregkh@linuxfoundation.org Cc: torvalds@linux-foundation.org Cc: jeyu@kernel.org Cc: arjan@linux.intel.com Link: https://lkml.kernel.org/r/20180125235028.31211-1-andi@firstfloor.org Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> [jwang: port to 4.4] Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* genksyms: Fix segfault with invalid declarationsMichal Marek2018-02-253-964/+853
| | | | | | | | | | | | | | | | | | | | commit d920f7c6628c63a390009c237fb80a203c2e400a upstream. Do not try to recover too early and segfault when parsing invalid declarations such as echo 'int (int);' | scripts/genksyms/genksyms echo 'int a, (int);' | scripts/genksyms/genksyms echo 'extern void *__inline_memcpy((void *), (const void *), (__kernel_size_t));' | scripts/genksyms/genksyms The last one was a real-life bug with include/asm-generic/asm-prototypes.h on x86_64. Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Michal Marek <mmarek@suse.com> [arnd: rebase to 4.4, regenerate parse.tab.{c,h}] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scripts/kernel-doc: Don't fail with status != 0 if error encountered with -noneWill Deacon2018-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit e814bccbafece52a24e152d2395b5d49eef55841 ] My bisect scripts starting running into build failures when trying to compile 4.15-rc1 with the builds failing with things like: drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:2078: error: Cannot parse struct or union! The line in question is actually just a #define, but after some digging it turns out that my scripts pass W=1 and since commit 3a025e1d1c2ea ("Add optional check for bad kernel-doc comments") that results in kernel-doc running on each source file. The file in question has a badly formatted comment immediately before the #define: /** * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for * bus layer usage. */ which causes the regex in dump_struct to fail (lack of braces following struct declaration) and kernel-doc returns 1, which causes the build to fail. Fix the issue by always returning 0 from kernel-doc when invoked with -none. It successfully generates no documentation, and prints out any issues. Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* powerpc: Simplify module TOC handlingAlan Modra2018-02-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit c153693d7eb9eeb28478aa2deaaf0b4e7b5ff5e9 upstream. PowerPC64 uses the symbol .TOC. much as other targets use _GLOBAL_OFFSET_TABLE_. It identifies the value of the GOT pointer (or in powerpc parlance, the TOC pointer). Global offset tables are generally local to an executable or shared library, or in the kernel, module. Thus it does not make sense for a module to resolve a relocation against .TOC. to the kernel's .TOC. value. A module has its own .TOC., and indeed the powerpc64 module relocation processing ignores the kernel value of .TOC. and instead calculates a module-local value. This patch removes code involved in exporting the kernel .TOC., tweaks modpost to ignore an undefined .TOC., and the module loader to twiddle the section symbol so that .TOC. isn't seen as undefined. Note that if the kernel was compiled with -msingle-pic-base then ELFv2 would not have function global entry code setting up r2. In that case the module call stubs would need to be modified to set up r2 using the kernel .TOC. value, requiring some of this code to be reinstated. mpe: Furthermore a change in binutils master (not yet released) causes the current way we handle the TOC to no longer work when building with MODVERSIONS=y and RELOCATABLE=n. The symptom is that modules can not be loaded due to there being no version found for TOC. Signed-off-by: Alan Modra <amodra@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kbuild: modversions for EXPORT_SYMBOL() for asmNicholas Piggin2018-01-231-7/+80
| | | | | | | | | | | | | | commit 4efca4ed05cbdfd13ec3e8cb623fb77d6e4ab187 upstream. Allow architectures to create asm/asm-prototypes.h file that provides C prototypes for exported asm functions, which enables proper CRC versions to be generated for them. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com> [jkosina@suse.cz: folded cc6acc11cad1 fixup in as well ] Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* genksyms: Handle string literals with spaces in reference filesMichal Marek2018-01-101-2/+4
| | | | | | | | | | | | | | | | | commit a78f70e8d65e88b9f631d073f68cb26dcd746298 upstream. The reference files use spaces to separate tokens, however, we must preserve spaces inside string literals. Currently the only case in the tree is struct edac_raw_error_desc in <linux/edac.h>: $ KBUILD_SYMTYPES=1 make -s drivers/edac/amd64_edac.symtypes $ mv drivers/edac/amd64_edac.{symtypes,symref} $ KBUILD_SYMTYPES=1 make -s drivers/edac/amd64_edac.symtypes drivers/edac/amd64_edac.c:527: warning: amd64_get_dram_hole_info: modversion changed because of changes in struct edac_raw_error_desc Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kbuild: pkg: use --transform option to prefix paths in tarMasahiro Yamada2017-12-161-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit 2dbc644ac62bbcb9ee78e84719953f611be0413d ] For rpm-pkg and deb-pkg, a source tar file is created. All paths in the archive must be prefixed with the base name of the tar so that everything is contained in the directory when you extract it. Currently, scripts/package/Makefile uses a symlink for that, and removes it after the tar is created. If you terminate the build during the tar creation, the symlink is left over. Then, at the next package build, you will see a warning like follows: ln: '.' and 'kernel-4.14.0+/.' are the same file It is possible to fix it by adding -n (--no-dereference) option to the "ln" command, but a cleaner way is to use --transform option of "tar" command. This option is GNU extension, but it should not hurt to use it in the Linux build system. The 'S' flag is needed to exclude symlinks from the path fixup. Without it, symlinks in the kernel are broken. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* module: set __jump_table alignment to 8David Daney2017-12-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit ab42632156becd35d3884ee5c14da2bedbf3149a ] For powerpc the __jump_table section in modules is not aligned, this causes a WARN_ON() splat when loading a module containing a __jump_table. Strict alignment became necessary with commit 3821fd35b58d ("jump_label: Reduce the size of struct static_key"), currently in linux-next, which uses the two least significant bits of pointers to __jump_table elements. Fix by forcing __jump_table to 8, which is the same alignment used for this section in the kernel proper. Link: http://lkml.kernel.org/r/20170301220453.4756-1-david.daney@cavium.com Reviewed-by: Jason Baron <jbaron@akamai.com> Acked-by: Jessica Yu <jeyu@redhat.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Tested-by: Sachin Sant <sachinp@linux.vnet.ibm.com> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* checkpatch: silence perl 5.26.0 unescaped left brace warningsCyril Bur2017-07-211-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 8d81ae05d0176da1c54aeaed697fa34be5c5575e upstream. As of perl 5, version 26, subversion 0 (v5.26.0) some new warnings have occurred when running checkpatch. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(.\s*){ <-- HERE \s*/ at scripts/checkpatch.pl line 3544. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(.\s*){ <-- HERE \s*/ at scripts/checkpatch.pl line 3885. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(\+.*(?:do|\))){ <-- HERE / at scripts/checkpatch.pl line 4374. It seems perfectly reasonable to do as the warning suggests and simply escape the left brace in these three locations. Link: http://lkml.kernel.org/r/20170607060135.17384-1-cyrilbur@gmail.com Signed-off-by: Cyril Bur <cyrilbur@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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kconfig/nconf: Fix hang when editing symbol with a long promptBen Hutchings2017-01-091-4/+11
| | | | | | | | | | | | | | | | | | | | | commit 79e51b5c2deea542b3bb8c66e0d502230b017dde upstream. Currently it is impossible to edit the value of a config symbol with a prompt longer than (terminal width - 2) characters. dialog_inputbox() calculates a negative x-offset for the input window and newwin() fails as this is invalid. It also doesn't check for this failure, so it busy-loops calling wgetch(NULL) which immediately returns -1. The additions in the offset calculations also don't match the intended size of the window. Limit the window size and calculate the offset similarly to show_scroll_win(). Fixes: 692d97c380c6 ("kconfig: new configuration interface (nconfig)") Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scripts/has-stack-protector: add -fno-PIESebastian Andrzej Siewior2016-11-261-1/+1
| | | | | | | | | | | | | | | | | | | | commit 82031ea29e454b574bc6f49a33683a693ca5d907 upstream. Adding -no-PIE to the fstack protector check. -no-PIE was introduced before -fstack-protector so there is no need for a runtime check. Without it the build stops: |Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong available but compiler is broken due to -mcmodel=kernel + -fPIE if -fPIE is enabled by default. Tagging it stable so it is possible to compile recent stable kernels as well. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Revert "x86/mm: Expand the exception table logic to allow new handling options"Greg Kroah-Hartman2016-10-311-32/+0
| | | | | | | | | | | | | This reverts commit fcf5e5198b447969ed2a56ec335dae3c695a6b46 which is 548acf19234dbda5a52d5a8e7e205af46e9da840 upstream. Cc: Tony Luck <tony.luck@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* x86/mm: Expand the exception table logic to allow new handling optionsTony Luck2016-10-311-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 548acf19234dbda5a52d5a8e7e205af46e9da840 upstream. Huge amounts of help from Andy Lutomirski and Borislav Petkov to produce this. Andy provided the inspiration to add classes to the exception table with a clever bit-squeezing trick, Boris pointed out how much cleaner it would all be if we just had a new field. Linus Torvalds blessed the expansion with: ' I'd rather not be clever in order to save just a tiny amount of space in the exception table, which isn't really criticial for anybody. ' The third field is another relative function pointer, this one to a handler that executes the actions. We start out with three handlers: 1: Legacy - just jumps the to fixup IP 2: Fault - provide the trap number in %ax to the fixup code 3: Cleaned up legacy for the uaccess error hack Signed-off-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/f6af78fcbd348cf4939875cfda9c19689b5e50b8.1455732970.git.tony.luck@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ftrace/recordmcount: Work around for addition of metag magic but not relocationsLaura Abbott2016-08-201-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit b2e1c26f0b62531636509fbcb6dab65617ed8331 upstream. glibc recently did a sync up (94e73c95d9b5 "elf.h: Sync with the gabi webpage") that added a #define for EM_METAG but did not add relocations This triggers build errors: scripts/recordmcount.c: In function 'do_file': scripts/recordmcount.c:466:28: error: 'R_METAG_ADDR32' undeclared (first use in this function) case EM_METAG: reltype = R_METAG_ADDR32; ^~~~~~~~~~~~~~ scripts/recordmcount.c:466:28: note: each undeclared identifier is reported only once for each function it appears in scripts/recordmcount.c:468:20: error: 'R_METAG_NONE' undeclared (first use in this function) rel_type_nop = R_METAG_NONE; ^~~~~~~~~~~~ Work around this change with some more #ifdefery for the relocations. Fedora Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1354034 Link: http://lkml.kernel.org/r/1468005530-14757-1-git-send-email-labbott@redhat.com Cc: James Hogan <james.hogan@imgtec.com> Fixes: 00512bdd4573 ("metag: ftrace support") Reported-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* of: fix autoloading due to broken modalias with no 'compatible'Wolfram Sang2016-07-271-1/+1
| | | | | | | | | | | | | | | | | | | commit b3c0a4dab7e35a9b6d69c0415641d2280fdefb2b upstream. Because of an improper dereference, a stray 'C' character was output to the modalias when no 'compatible' was specified. This is the case for some old PowerMac drivers which only set the 'name' property. Fix it to let them match again. Reported-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Tested-by: Mathieu Malaterre <malat@debian.org> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Andreas Schwab <schwab@linux-m68k.org> Fixes: 6543becf26fff6 ("mod/file2alias: make modalias generation safe for cross compiling") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scripts/package/Makefile: rpmbuild add support of RPMOPTSSrinivas Pandruvada2016-06-071-2/+2
| | | | | | | | | | | | | | | | commit 65a9f31c5042e5bb50d30ed8ae374044be561054 upstream. After commit 21a59991ce0c ("scripts/package/Makefile: rpmbuild is needed for rpm targets"), it is no longer possible to specify RPMOPTS. For example, we can no longer able to control _topdir using the following make command. make RPMOPTS="--define '_topdir /home/xyz/workspace/'" binrpm-pkg Fixes: 21a59991ce0c ("scripts/package/Makefile: rpmbuild is needed for rpm targets") Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kbuild: move -Wunused-const-variable to W=1 warning levelArnd Bergmann2016-06-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit c9c6837d39311b0cc14cdbe7c18e815ab44aefb1 upstream. gcc-6 started warning by default about variables that are not used anywhere and that are marked 'const', generating many false positives in an allmodconfig build, e.g.: arch/arm/mach-davinci/board-da830-evm.c:282:20: warning: 'da830_evm_emif25_pins' defined but not used [-Wunused-const-variable=] arch/arm/plat-omap/dmtimer.c:958:34: warning: 'omap_timer_match' defined but not used [-Wunused-const-variable=] drivers/bluetooth/hci_bcm.c:625:39: warning: 'acpi_bcm_default_gpios' defined but not used [-Wunused-const-variable=] drivers/char/hw_random/omap-rng.c:92:18: warning: 'reg_map_omap4' defined but not used [-Wunused-const-variable=] drivers/devfreq/exynos/exynos5_bus.c:381:32: warning: 'exynos5_busfreq_int_pm' defined but not used [-Wunused-const-variable=] drivers/dma/mv_xor.c:1139:34: warning: 'mv_xor_dt_ids' defined but not used [-Wunused-const-variable=] This is similar to the existing -Wunused-but-set-variable warning that was added in an earlier release and that we disable by default now and only enable when W=1 is set, so it makes sense to do the same here. Once we have eliminated the majority of the warnings for both, we can put them back into the default list. We probably want this in backport kernels as well, to allow building them with gcc-6 without introducing extra warnings. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* unbreak allmodconfig KCONFIG_ALLCONFIG=...Al Viro2016-05-041-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | commit 6b87b70c5339f30e3c5b32085e69625906513dc2 upstream. Prior to 3.13 make allmodconfig KCONFIG_ALLCONFIG=/dev/null used to be equivalent to make allmodconfig; these days it hardwires MODULES to n. In fact, any KCONFIG_ALLCONFIG that doesn't set MODULES explicitly is treated as if it set it to n. Regression had been introduced by commit cfa98f ("kconfig: do not override symbols already set"); what happens is that conf_read_simple() does sym_calc_value(modules_sym) on exit, which leaves SYMBOL_VALID set and has conf_set_all_new_symbols() skip modules_sym. It's pretty easy to fix - simply move that call of sym_calc_value() into the callers, except for the ones in KCONFIG_ALLCONFIG handling. Objections? Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Fixes: cfa98f2e0ae9 ("kconfig: do not override symbols already set") Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kbuild/mkspec: fix grub2 installkernel issueJiri Kosina2016-04-121-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | commit c8b08ca558c0067bc9e15ce3f1e70af260410bb2 upstream. mkspec is copying built kernel to temporrary location /boot/vmlinuz-$KERNELRELEASE-rpm and runs installkernel on it. This however directly leads to grub2 menuentry for this suffixed binary being generated as well during the run of installkernel script. Later in the process the temporary -rpm suffixed files are removed, and therefore we end up with spurious (and non-functional) grub2 menu entries for each installed kernel RPM. Fix that by using a different temporary name (prefixed by '.'), so that the binary is not recognized as an actual kernel binary and no menuentry is created for it. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Fixes: 3c9c7a14b627 ("rpm-pkg: add %post section to create initramfs and grub hooks") Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scripts/kconfig: allow building with make 3.80 againJan Beulich2016-04-121-1/+3
| | | | | | | | | | | | | | commit 42f9d3c6888bceef6dc7ba72c77acf47347dcf05 upstream. Documentation/Changes still lists this as the minimal required version, so it ought to remain usable for the time being. Fixes: d2036f30cf ("scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target") Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scripts/coccinelle: modernize &Julia Lawall2016-04-121-1/+1
| | | | | | | | | | | | commit 1b669e713f277a4d4b3cec84e13d16544ac8286d upstream. & is no longer allowed in column 0, since Coccinelle 1.0.4. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Michal Marek <mmarek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ld-version: Fix awk regex compile failureJames Hogan2016-03-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 4b7b1ef2c2f83d702272555e8adb839a50ba0f8e upstream. The ld-version.sh script fails on some versions of awk with the following error, resulting in build failures for MIPS: awk: scripts/ld-version.sh: line 4: regular expression compile failed (missing '(') This is due to the regular expression ".*)", meant to strip off the beginning of the ld version string up to the close bracket, however brackets have a meaning in regular expressions, so lets escape it so that awk doesn't expect a corresponding open bracket. Fixes: ccbef1674a15 ("Kbuild, lto: add ld-version and ld-ifversion ...") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Hogan <james.hogan@imgtec.com> Tested-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Cc: Michal Marek <mmarek@suse.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: linux-mips@linux-mips.org Cc: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12838/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* um: link with -lpthreadVegard Nossum2016-03-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | commit a7df4716d19594b7b3f106f0bc0ca1c548e508e6 upstream. Similarly to commit fb1770aa78a43530940d0c2dd161e77bc705bdac, with gcc 5 on Ubuntu and CONFIG_STATIC_LINK=y I was seeing these linker errors: /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/librt.a(timer_create.o): In function `__timer_create_new': (.text+0xcd): undefined reference to `pthread_once' /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/librt.a(timer_create.o): In function `__timer_create_new': (.text+0x126): undefined reference to `pthread_attr_init' /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/librt.a(timer_create.o): In function `__timer_create_new': (.text+0x168): undefined reference to `pthread_attr_setdetachstate' [...] Obviously we also need -lpthread for librt.a. Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scripts/bloat-o-meter: fix python3 syntax errorSergey Senozhatsky2016-02-251-4/+4
| | | | | | | | | | | | | | | | | | | | | | | commit 72214a24a7677d4c7501eecc9517ed681b5f2db2 upstream. In Python3+ print is a function so the old syntax is not correct anymore: $ ./scripts/bloat-o-meter vmlinux.o vmlinux.o.old File "./scripts/bloat-o-meter", line 61 print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ ^ SyntaxError: invalid syntax Fix by calling print as a function. Tested on python 2.7.11, 3.5.1 Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scripts/recordmcount.pl: support data in text section on powerpcUlrich Weigand2016-01-311-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | commit 2e50c4bef77511b42cc226865d6bc568fa7f8769 upstream. If a text section starts out with a data blob before the first function start label, disassembly parsing doing in recordmcount.pl gets confused on powerpc, leading to creation of corrupted module objects. This was not a problem so far since the compiler would never create such text sections. However, this has changed with a recent change in GCC 6 to support distances of > 2GB between a function and its assoicated TOC in the ELFv2 ABI, exposing this problem. There is already code in recordmcount.pl to handle such data blobs on the sparc64 platform. This patch uses the same method to handle those on powerpc as well. Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ulrich Weigand <ulrich.weigand@de.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ftrace/scripts: Fix incorrect use of sprintf in recordmcountColin Ian King2016-01-041-1/+1
| | | | | | | | | | | | | | | | | | Fix build warning: scripts/recordmcount.c:589:4: warning: format not a string literal and no format arguments [-Wformat-security] sprintf("%s: failed\n", file); Fixes: a50bd43935586 ("ftrace/scripts: Have recordmcount copy the object file") Link: http://lkml.kernel.org/r/1451516801-16951-1-git-send-email-colin.king@canonical.com Cc: Li Bin <huawei.libin@huawei.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Cc: stable@vger.kernel.org # 2.6.37+ Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftrace/scripts: Have recordmcount copy the object fileSteven Rostedt (Red Hat)2015-12-161-35/+110
| | | | | | | | | | | | | | | | | | Russell King found that he had weird side effects when compiling the kernel with hard linked ccache. The reason was that recordmcount modified the kernel in place via mmap, and when a file gets modified twice by recordmcount, it will complain about it. To fix this issue, Russell wrote a patch that checked if the file was hard linked more than once and would unlink it if it was. Linus Torvalds was not happy with the fact that recordmcount does this in place modification. Instead of doing the unlink only if the file has two or more hard links, it does the unlink all the time. In otherwords, it always does a copy if it changed something. That is, it does the write out if a change was made. Cc: stable@vger.kernel.org # 2.6.37+ Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* scripts: recordmcount: break hardlinksRussell King2015-12-161-0/+14
| | | | | | | | | | | | recordmcount edits the file in-place, which can cause problems when using ccache in hardlink mode. Arrange for recordmcount to break a hardlinked object. Link: http://lkml.kernel.org/r/E1a7MVT-0000et-62@rmk-PC.arm.linux.org.uk Cc: stable@vger.kernel.org # 2.6.37+ Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* arch: um: fix error when linking vmlinux.Lorenzo Colitti2015-12-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | On gcc Ubuntu 4.8.4-2ubuntu1~14.04, linking vmlinux fails with: arch/um/os-Linux/built-in.o: In function `os_timer_create': /android/kernel/android/arch/um/os-Linux/time.c:51: undefined reference to `timer_create' arch/um/os-Linux/built-in.o: In function `os_timer_set_interval': /android/kernel/android/arch/um/os-Linux/time.c:84: undefined reference to `timer_settime' arch/um/os-Linux/built-in.o: In function `os_timer_remain': /android/kernel/android/arch/um/os-Linux/time.c:109: undefined reference to `timer_gettime' arch/um/os-Linux/built-in.o: In function `os_timer_one_shot': /android/kernel/android/arch/um/os-Linux/time.c:132: undefined reference to `timer_settime' arch/um/os-Linux/built-in.o: In function `os_timer_disable': /android/kernel/android/arch/um/os-Linux/time.c:145: undefined reference to `timer_settime' This is because -lrt appears in the generated link commandline after arch/um/os-Linux/built-in.o. Fix this by removing -lrt from arch/um/Makefile and adding it to the UM-specific section of scripts/link-vmlinux.sh. Signed-off-by: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
* kernel-doc: Make it compatible with Perl versions below 5.12 againMauro Carvalho Chehab2015-11-171-1/+1
| | | | | | | | | | | | | | Changeset 4d73270192ec('scripts/kernel-doc: Replacing highlights hash by an array') broke compatibility of the kernel-doc script with older versions of perl by using "keys ARRAY" syntax with is available only on Perl 5.12 or newer, according with: http://perldoc.perl.org/functions/keys.html Restore backward compatibility by replacing "foreach my $k (keys ARRAY)" by a C-like variant: "for (my $k = 0; $k < !ARRAY; $k++)" Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Merge branch 'misc' of ↵Linus Torvalds2015-11-1010-234/+415
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull misc kbuild updates from Michal Marek: "This is the non-critical part of kbuild: - several coccinelle updates - make deb-pkg creates an armhf package if CONFIG_VFP=y - make tags understands some more powerpc macros" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: coccinelle: Improve checking for missing NULL terminators coccinelle: ifnullfree: handle various destroy functions coccinelle: ifnullfree: various cleanups cocinelle: iterators: semantic patch to delete unneeded of_node_put deb-pkg: Add automatic support for armhf architecture scripts/coccinelle: fix typos coccinelle: misc: remove "complex return code" warnings Coccinelle: fix incorrect -include option transformation coccinelle: tests: improve odd_ptr_err.cocci coccinelle: misc: move constants to the right scripts/tags.sh: Teach tags about some powerpc macros
| * coccinelle: Improve checking for missing NULL terminatorsDaniel Granat2015-10-261-5/+28
| | | | | | | | | | | | | | | | | | | | Extend checking on tables containing structures which are initialized without specifying member name. Added new tables for checking: i2c_device_id and platform_device_id. Signed-off-by: Daniel Granat <d.granat@samsung.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * coccinelle: ifnullfree: handle various destroy functionsJulia Lawall2015-10-261-1/+9
| | | | | | | | | | | | | | | | Extend ifnullfree to the various destroy functions that were recently extended to tolerate NULL arguments. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * coccinelle: ifnullfree: various cleanupsJulia Lawall2015-10-261-11/+7
| | | | | | | | | | | | | | | | | | | | | | | | Adjust tests to compare against NULL, to match cases that explicitly make that comparison. Remove removal and re-addition of freeing functions. Add position variable on usb_free_urb in the non-patch case. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * cocinelle: iterators: semantic patch to delete unneeded of_node_putJulia Lawall2015-10-261-0/+100
| | | | | | | | | | | | | | | | Device node iterators perform an of_node_put on each iteration, so putting an of_node_put before a continue results in a double put. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * deb-pkg: Add automatic support for armhf architectureBen Hutchings2015-10-261-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Debian armhf architecture uses the ARM EABI hard-float variant, whereas armel uses the soft-float variant. Although the kernel doesn't use FP itself, CONFIG_VFP must be enabled to support hard-float userland and will probably be disabled when supporting a soft-float userland. So set the architecture to armhf by default when CONFIG_AEABI and CONFIG_VFP are both enabled. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Fathi Boudra <fathi.boudra@linaro.org> Reviewed-by: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * scripts/coccinelle: fix typosJulia Lawall2015-10-261-2/+2
| | | | | | | | | | | | | | Fix a couple spelling mistakes. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * coccinelle: misc: remove "complex return code" warningsJohan Hovold2015-10-261-180/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This effectively reverts 932058a5d5f9 ("coccinelle: misc: semantic patch to delete overly complex return code processing"). There can be both symmetry and readability reasons for not wanting to do the final function call as part of the return statement and to maintain a clear separation of success and error paths. Since this is in no way mandated by the coding standard, let's just remove this semantic patch to avoid having "clean up" patches being posted over and over in response to these Coccinelle warnings. Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * Coccinelle: fix incorrect -include option transformationAndrzej Hajda2015-10-261-1/+1
| | | | | | | | | | | | | | | | | | | | kbuild/gcc uses -include option to include files and -I to provide paths for #include <> directive. In case of spatch latter option should be prefixed with two -. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * coccinelle: tests: improve odd_ptr_err.cocciJulia Lawall2015-10-261-34/+86
| | | | | | | | | | | | | | | | | | The original version only considered the case where the then branch contains only one call to PTR_ERR. Reimplement the whole thing to allow multiple calls, with potentially different arguments. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * coccinelle: misc: move constants to the rightJulia Lawall2015-10-261-0/+171
| | | | | | | | | | | | | | Move constants to the right in binary operators. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.com>
| * scripts/tags.sh: Teach tags about some powerpc macrosMichael Ellerman2015-10-131-0/+2
| | | | | | | | | | | | | | | | | | The IO accessors on powerpc are generated using macro fu, ie. out_be32() etc. Also there are some debugger related symbols that are macro generated. Teach scripts/tags.sh about both. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michal Marek <mmarek@suse.com>
* | Merge branch 'kconfig' of ↵Linus Torvalds2015-11-106-436/+480
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kconfig updates from Michal Marek: - 'make xconfig' ported to Qt5, dropping support for Qt3 - merge_config.sh supports a single-input-file mode and also respects $KCONFIG_CONFIG - Fix for incorrect display of >= and > in dependency expressions * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (44 commits) Add current selection check. Use pkg-config to find Qt 4 and 5 instead of direct qmake kconfig: Fix copy&paste error kconfig/merge_config.sh: Accept a single file kconfig/merge_config.sh: Support KCONFIG_CONFIG Update the buildsystem for KConfig finding Qt Port xconfig to Qt5 - Update copyright. Port xconfig to Qt5 - Fix goParent issue. Port xconfig to Qt5 - on Back clicked, deselect old item. Port xconfig to Qt5 - Add(back) one click checkbox toggle. Port xconfig to Qt5 - Add(back) lineedit editing. Port xconfig to Qt5 - Remove some commented code. Port xconfig to Qt5 - Source format. Port xconfig to Qt5 - Add horizontal scrollbar, and scroll per pixel. Port xconfig to Qt5 - Change ConfigItem constructor parent type. Port xconfig to Qt5 - Disable ConfigList soring Port xconfig to Qt5 - Remove ConfigList::updateMenuList template. Port xconfig to Qt5 - Add ConfigList::mode to initializer list. Port xconfig to Qt5 - Add ConfigItem::nextItem to initializer list. Port xconfig to Qt5 - Tree widget set column titles. ...
| * | Add current selection check.Boris Barbulovski2015-11-021-0/+7
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com> Signed-off-by: Thiago Macieira <thiago.macieira@intel.com> [mmarek: I missed it in the original Qt5 patch set, which caused a crash] Signed-off-by: Michal Marek <mmarek@suse.com>
| * | Use pkg-config to find Qt 4 and 5 instead of direct qmakeThiago Macieira2015-11-021-24/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Qt Project recommendation is that there should always be a "qmake" binary and it should never be renamed. If it's necessary to handle multiple Qt versions, the Qt Project recommends using qtchooser. Unfortunately, some distros do not follow the recommendation, so we would need to check qmake-qt4, qmake-qt5, etc. So, instead, let's try pkg-config. Signed-off-by: Thiago Macieira <thiago.macieira@intel.com> Reported-by: Alexey Brodkin <abrodkin@synopsys.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Michal Marek <mmarek@suse.com>
| * | kconfig: Fix copy&paste errorMichal Sojka2015-10-201-1/+1
| | | | | | | | | | | | | | | | | | | | | Fixes: 31847b67bec0 ("kconfig: allow use of relations other than (in)equality") Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz> Reviewed-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
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