[PATCH v2 0/2] UBSan: run-time undefined behavior sanity checker

[Andrey Ryabinin <a.ryabinin@samsung.com>]

Next spin of UBSan and there are two patches from now.
"Two there should be; no more, no less. One to embody the UBSan,
the other to not deadlock it."

Patches on top of v3.18-rc4. As usual they are available in git:
	git://github.com/aryabinin/linux ubsan/v2

Changes since v1:
   - Refactoring and cleanups in lib/ubsan.c including Sasha's complains.
   - Some spelling fixes from Randy
   - Fixed possible memory corruption on 64 big endian machines, spotted by Rasmus.
   - Links to the relevant GCC documentation added into changelog (Peter).
   - Added documentation.
   - Fix deadlock caused by kernel/printk/printk.c instrumentation
        (patch "kernel: printk: specify alignment for struct printk_log").
   - Dropped useless 'Indirect call of a function through a function pointer of the wrong type'
     checker. GCC doesn't support this, and as clang manual says it's for C++ only.
   - Added checker for __builtin_unreachable() calls.
   - Removed redundant -fno-sanitize=float-cast-overflow from CFLAGS.
   - Added lock to prevent mixing reports.

Andrey Ryabinin (2):
  kernel: printk: specify alignment for struct printk_log
  UBSan: run-time undefined behavior sanity checker

 Documentation/ubsan.txt               |  69 +++++
 Makefile                              |  10 +-
 arch/x86/Kconfig                      |   1 +
 arch/x86/boot/Makefile                |   1 +
 arch/x86/boot/compressed/Makefile     |   1 +
 arch/x86/realmode/rm/Makefile         |   1 +
 arch/x86/vdso/Makefile                |   2 +
 drivers/firmware/efi/libstub/Makefile |   1 +
 include/linux/sched.h                 |   3 +
 kernel/printk/printk.c                |  10 +-
 lib/Kconfig.debug                     |  22 ++
 lib/Makefile                          |   3 +
 lib/ubsan.c                           | 567 ++++++++++++++++++++++++++++++++++
 lib/ubsan.h                           |  84 +++++
 scripts/Makefile.lib                  |   6 +
 15 files changed, 775 insertions(+), 6 deletions(-)
 create mode 100644 Documentation/ubsan.txt
 create mode 100644 lib/ubsan.c
 create mode 100644 lib/ubsan.h

-- 
2.1.3