user/sven/linux.git/scripts, branch v3.15.6

recordmcount/MIPS: Fix possible incorrect mcount_loc table entries in modules

2014-07-07T01:59:09Z

commit 91ad11d7cc6f4472ebf177a6252fbf0fd100d798 upstream. On MIPS calls to _mcount in modules generate 2 instructions to load the _mcount address (and therefore 2 relocations). The mcount_loc table should only reference the first of these, so the second is filtered out by checking the relocation offset and ignoring ones that immediately follow the previous one seen. However if a module has an _mcount call at offset 0, the second relocation would not be filtered out due to old_r_offset == 0 being taken to mean that the current relocation is the first one seen, and both would end up in the mcount_loc table. This results in ftrace_make_nop() patching both (adjacent) instructions to branches over the _mcount call sequence like so: 0xffffffffc08a8000: 04 00 00 10 b 0xffffffffc08a8014 0xffffffffc08a8004: 04 00 00 10 b 0xffffffffc08a8018 0xffffffffc08a8008: 2d 08 e0 03 move at,ra ... The second branch is in the delay slot of the first, which is defined to be unpredictable - on the platform on which this bug was encountered, it triggers a reserved instruction exception. Fix by initializing old_r_offset to ~0 and using that instead of 0 to determine whether the current relocation is the first seen. Signed-off-by: Alex Smith Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7098/ Signed-off-by: Ralf Baechle Signed-off-by: Greg Kroah-Hartman

builddeb: use $OBJCOPY variable instead of objcopy

2014-07-01T03:14:04Z

commit 6b4a144a92ab81a1f45fb9b12aebaaaee0d08120 upstream. In cross-build environment, we expect to use the cross-compiler objcopy instead of the host objcopy. It fixes following build failures: objcopy --only-keep-debug lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko /srv/build/linux/debian/dbgtmp/usr/lib/debug/lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko objcopy: Unable to recognise the format of the input file `lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko' Signed-off-by: Fathi Boudra Fixes: 810e843746b7 ('deb-pkg: split debug symbols in their own package') Reviewed-by: Ben Hutchings Signed-off-by: Michal Marek Signed-off-by: Greg Kroah-Hartman

scripts/checksyscalls.sh: Make renameat optional

2014-05-20T08:59:38Z

The new renameat2 syscall provides all the functionality of renameat with an additional flags argument, so make renameat optional so that future architectures can omit it without getting a warning. This patch doesn't affect existing architectures. Signed-off-by: James Hogan Acked-by: Arnd Bergmann Signed-off-by: Miklos Szeredi Cc: linux-arch@vger.kernel.org

Merge tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux

2014-05-05T22:36:59Z

Pull Xtensa fixes from Chris Zankel: - Fixes allmodconfig, allnoconfig builds - Adds highmem support - Enables build-time exception table sorting. * tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux: xtensa: ISS: don't depend on CONFIG_TTY xtensa: xt2000: drop redundant sysmem initialization xtensa: add support for KC705 xtensa: xtfpga: introduce SoC I/O bus xtensa: add HIGHMEM support xtensa: optimize local_flush_tlb_kernel_range xtensa: dump sysmem from the bootmem_init xtensa: handle memmap kernel option xtensa: keep sysmem banks ordered in mem_reserve xtensa: keep sysmem banks ordered in add_sysmem_bank xtensa: split bootparam and kernel meminfo xtensa: enable sorting extable at build time xtensa: export __{invalidate,flush}_dcache_range xtensa: Export __invalidate_icache_range

Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2014-04-13T01:22:27Z

Pull misc kbuild changes from Michal Marek: "Here is the non-critical part of kbuild: - One bogus coccinelle check removed, one check fixed not to suggest the obsolete PTR_RET macro - scripts/tags.sh does not index the generated *.mod.c files - new objdiff tool to list differences between two versions of an object file - A fix for scripts/bootgraph.pl" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: scripts/coccinelle: Use PTR_ERR_OR_ZERO scripts/bootgraph.pl: Add graphic header scripts: objdiff: detect object code changes between two commits Coccicheck: Remove memcpy to struct assignment test scripts/tags.sh: Ignore *.mod.c

kbuild: LLVMLinux: Fix LINUX_COMPILER definition script for compilation with clang

2014-04-09T20:44:35Z

When building the LINUX_COMPILER definition, instead of merely taking the last line from "$(CC) -v", grep for ' version ' in the output. This supports both gcc and clang. Signed-off-by: Jan-Simon Möller Signed-off-by: Behan Webster Signed-off-by: Mark Charlebois Cc: PaX Team

kbuild: LLVMLinux: Adapt warnings for compilation with clang

2014-04-09T20:44:34Z

When compiling kernel with clang, disable warnings which are too noisy, and add the clang flag catch-undefined-behavior. Signed-off-by: Jan-Simon Möller Signed-off-by: Behan Webster Signed-off-by: Mark Charlebois Cc: PaX Team

scripts/coccinelle: Use PTR_ERR_OR_ZERO

2014-04-08T15:27:01Z

PTR_RET is deprecated. Do not recommend its usage anymore. Use PTR_ERR_OR_ZERO instead. Signed-off-by: Sachin Kamat Signed-off-by: Michal Marek

scripts/bootgraph.pl: Add graphic header

2014-04-08T15:15:15Z

Adding -header + help function like other .pl in /scripts. Signed-off-by: Fabian Frederick Signed-off-by: Michal Marek

scripts: objdiff: detect object code changes between two commits

2014-04-08T14:41:44Z

objdiff is useful when doing large code cleanups. For example, when removing checkpatch warnings and errors from new drivers in the staging tree. objdiff can be used in conjunction with a git rebase to confirm that each commit made no changes to the resulting object code. It has the same return values as diff(1). This was written specifically to support adding the skein and threefish cryto drivers to the staging tree. I needed a programmatic way to confirm that commits changing >90% of the lines didn't inadvertently change the code. Temporary files (objdump output) are stored in /path/to/linux/.tmp_objdiff 'make mrproper' will remove this directory. Signed-off-by: Jason Cooper Signed-off-by: Michal Marek