linux-kernel - [GIT PULL kcsan] KCSAN commits for v5.7

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Date:   Tue, 17 Mar 2020 10:37:19 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     mingo@...nel.org
Cc:     kasan-dev@...glegroups.com, elver@...gle.com,
        linux-kernel@...r.kernel.org
Subject: [GIT PULL kcsan] KCSAN commits for v5.7

Hello, Ingo,

This pull request contains KCSAN updates for v5.7.

https://lore.kernel.org/lkml/20200309190359.GA5822@paulmck-ThinkPad-P72/

All of these have been subjected to the kbuild test robot and -next
testing, and are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git kcsan-for-mingo

for you to fetch changes up to 31bbbb841768f369301d6f65782dffd65d22aa5b:

  kcsan, trace: Make KCSAN compatible with tracing (2020-03-09 13:18:49 -0700)

----------------------------------------------------------------
Marco Elver (25):
      kcsan: Prefer __always_inline for fast-path
      kcsan: Show full access type in report
      kcsan: Rate-limit reporting per data races
      kcsan: Make KCSAN compatible with lockdep
      kcsan: Address missing case with KCSAN_REPORT_VALUE_CHANGE_ONLY
      include/linux: Add instrumented.h infrastructure
      asm-generic, atomic-instrumented: Use generic instrumented.h
      asm-generic, kcsan: Add KCSAN instrumentation for bitops
      iov_iter: Use generic instrumented.h
      copy_to_user, copy_from_user: Use generic instrumented.h
      kcsan: Add option to assume plain aligned writes up to word size are atomic
      kcsan: Clarify Kconfig option KCSAN_IGNORE_ATOMICS
      kcsan: Cleanup of main KCSAN Kconfig option
      kcsan: Fix 0-sized checks
      kcsan: Introduce KCSAN_ACCESS_ASSERT access type
      kcsan: Introduce ASSERT_EXCLUSIVE_* macros
      kcsan: Add test to generate conflicts via debugfs
      kcsan: Expose core configuration parameters as module params
      kcsan: Fix misreporting if concurrent races on same address
      kcsan: Move interfaces that affects checks to kcsan-checks.h
      compiler.h, seqlock.h: Remove unnecessary kcsan.h includes
      kcsan: Introduce kcsan_value_change type
      kcsan: Add kcsan_set_access_mask() support
      kcsan: Introduce ASSERT_EXCLUSIVE_BITS(var, mask)
      kcsan, trace: Make KCSAN compatible with tracing

Paul E. McKenney (1):
      kcsan: Add docbook header for data_race()

 arch/x86/lib/Makefile                              |   5 +
 include/asm-generic/atomic-instrumented.h          | 395 ++++++++++-----------
 include/asm-generic/bitops/instrumented-atomic.h   |  14 +-
 include/asm-generic/bitops/instrumented-lock.h     |  10 +-
 .../asm-generic/bitops/instrumented-non-atomic.h   |  16 +-
 include/linux/compiler.h                           |  16 +-
 include/linux/instrumented.h                       | 109 ++++++
 include/linux/kcsan-checks.h                       | 174 ++++++++-
 include/linux/kcsan.h                              |  46 +--
 include/linux/seqlock.h                            |   2 +-
 include/linux/uaccess.h                            |  14 +-
 init/init_task.c                                   |   1 +
 kernel/kcsan/Makefile                              |   2 +
 kernel/kcsan/atomic.h                              |   2 +-
 kernel/kcsan/core.c                                | 183 ++++++++--
 kernel/kcsan/debugfs.c                             |  65 +++-
 kernel/kcsan/encoding.h                            |  14 +-
 kernel/kcsan/kcsan.h                               |  33 +-
 kernel/kcsan/report.c                              | 255 +++++++++++--
 kernel/kcsan/test.c                                |  10 +
 kernel/locking/Makefile                            |   3 +
 kernel/trace/Makefile                              |   3 +
 lib/Kconfig.kcsan                                  |  70 +++-
 lib/iov_iter.c                                     |   7 +-
 lib/usercopy.c                                     |   7 +-
 scripts/atomic/gen-atomic-instrumented.sh          |  19 +-
 26 files changed, 1068 insertions(+), 407 deletions(-)
 create mode 100644 include/linux/instrumented.h