[PATCH 00/22] objtool: CONFIG_OBJTOOL_WERROR fixes and cleanups

[Josh Poimboeuf]

Since CONFIG_OBJTOOL_WERROR got merged into -tip, a lot of warnings have
been reported.  Fix those along with several other improvements.

Cc: Raju Rangoju <Raju.Rangoju@xxxxxxx>
CC: Mark Brown <broonie@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Sagi Grimberg <sagi@xxxxxxxxxxx>
Cc: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Kees Cook <kees@xxxxxxxxxx>

Josh Poimboeuf (22):
  objtool: Fix detection of consecutive jump tables
  objtool: Warn when disabling unreachable warnings
  objtool: Ignore entire functions rather than instructions
  objtool: Fix X86_FEATURE_SMAP alternative handling
  objtool: Fix CONFIG_OBJTOOL_WERROR for vmlinux.o
  objtool: Fix init_module() handling
  objtool: Silence more KCOV warnings
  objtool: Properly disable uaccess validation
  objtool: Improve error handling
  objtool: Reduce CONFIG_OBJTOOL_WERROR verbosity
  objtool: Fix up some outdated references to ENTRY/ENDPROC
  objtool: Remove --no-unreachable for noinstr-only vmlinux.o runs
  objtool: Remove redundant opts.noinstr dependency
  spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq()
  nvmet: Fix out-of-bounds stack access in nvmet_ctrl_state_show()
  media: dib8000: Prevent divide-by-zero in dib8000_set_dds()
  panic: Disable SMAP in __stack_chk_fail()
  Input: cyapa - remove undefined behavior in cyapa_update_fw_store()
  ASoC: codecs: wcd934x: Remove undefined behavior in
    wcd934x_slim_irq_handler()
  regulator: rk808: Remove undefined behavior in rk806_set_mode_dcdc()
  pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()
  lkdtm: Obfuscate do_nothing() pointer

 arch/x86/include/asm/arch_hweight.h     |   8 +-
 arch/x86/include/asm/smap.h             |  23 +-
 arch/x86/include/asm/xen/hypercall.h    |   6 +-
 drivers/input/mouse/cyapa.c             |   4 +-
 drivers/media/dvb-frontends/dib8000.c   |   5 +-
 drivers/misc/lkdtm/perms.c              |  14 +-
 drivers/nvme/target/debugfs.c           |   2 +-
 drivers/pwm/pwm-mediatek.c              |   8 +-
 drivers/regulator/rk808-regulator.c     |   4 +-
 drivers/spi/spi-amd.c                   |   2 +-
 include/linux/linkage.h                 |   4 -
 include/linux/objtool.h                 |   2 +-
 kernel/panic.c                          |   6 +
 scripts/Makefile.lib                    |   2 +-
 scripts/Makefile.vmlinux_o              |  15 +-
 sound/soc/codecs/wcd934x.c              |   2 +-
 tools/objtool/Documentation/objtool.txt |  10 +-
 tools/objtool/arch/x86/special.c        |  38 +-
 tools/objtool/builtin-check.c           | 146 ++++---
 tools/objtool/check.c                   | 525 ++++++++++++------------
 tools/objtool/elf.c                     |  28 +-
 tools/objtool/include/objtool/builtin.h |   6 +-
 tools/objtool/include/objtool/check.h   |   3 +-
 tools/objtool/include/objtool/elf.h     |  28 +-
 tools/objtool/include/objtool/objtool.h |   2 +-
 tools/objtool/include/objtool/special.h |   4 +-
 tools/objtool/include/objtool/warn.h    |  13 +-
 tools/objtool/objtool.c                 |  11 +-
 tools/objtool/special.c                 |  12 +-
 29 files changed, 477 insertions(+), 456 deletions(-)

-- 
2.48.1