On Wed, 16 Oct 2019 at 10:41, Marco Elver <elver@xxxxxxxxxx> wrote: > > This is the patch-series for the Kernel Concurrency Sanitizer (KCSAN). > KCSAN is a sampling watchpoint-based data-race detector. More details > are included in Documentation/dev-tools/kcsan.rst. This patch-series > only enables KCSAN for x86, but we expect adding support for other > architectures is relatively straightforward (we are aware of > experimental ARM64 and POWER support). > > To gather early feedback, we announced KCSAN back in September, and > have integrated the feedback where possible: > http://lkml.kernel.org/r/CANpmjNPJ_bHjfLZCAPV23AXFfiPiyXXqqu72n6TgWzb2Gnu1eA@xxxxxxxxxxxxxx > > We want to point out and acknowledge the work surrounding the LKMM, > including several articles that motivate why data-races are dangerous > [1, 2], justifying a data-race detector such as KCSAN. > [1] https://lwn.net/Articles/793253/ > [2] https://lwn.net/Articles/799218/ > > The current list of known upstream fixes for data-races found by KCSAN > can be found here: > https://github.com/google/ktsan/wiki/KCSAN#upstream-fixes-of-data-races-found-by-kcsan Sent v2: http://lkml.kernel.org/r/20191017141305.146193-1-elver@xxxxxxxxxx Many thanks, -- Marco > Marco Elver (8): > kcsan: Add Kernel Concurrency Sanitizer infrastructure > objtool, kcsan: Add KCSAN runtime functions to whitelist > build, kcsan: Add KCSAN build exceptions > seqlock, kcsan: Add annotations for KCSAN > seqlock: Require WRITE_ONCE surrounding raw_seqcount_barrier > asm-generic, kcsan: Add KCSAN instrumentation for bitops > locking/atomics, kcsan: Add KCSAN instrumentation > x86, kcsan: Enable KCSAN for x86 > > Documentation/dev-tools/kcsan.rst | 202 ++++++++++ > MAINTAINERS | 11 + > Makefile | 3 +- > arch/x86/Kconfig | 1 + > arch/x86/boot/Makefile | 1 + > arch/x86/boot/compressed/Makefile | 1 + > arch/x86/entry/vdso/Makefile | 1 + > arch/x86/include/asm/bitops.h | 2 +- > arch/x86/kernel/Makefile | 6 + > arch/x86/kernel/cpu/Makefile | 3 + > arch/x86/lib/Makefile | 2 + > arch/x86/mm/Makefile | 3 + > arch/x86/purgatory/Makefile | 1 + > arch/x86/realmode/Makefile | 1 + > arch/x86/realmode/rm/Makefile | 1 + > drivers/firmware/efi/libstub/Makefile | 1 + > include/asm-generic/atomic-instrumented.h | 192 ++++++++- > include/asm-generic/bitops-instrumented.h | 18 + > include/linux/compiler-clang.h | 9 + > include/linux/compiler-gcc.h | 7 + > include/linux/compiler.h | 35 +- > include/linux/kcsan-checks.h | 116 ++++++ > include/linux/kcsan.h | 85 ++++ > include/linux/sched.h | 7 + > include/linux/seqlock.h | 51 ++- > init/init_task.c | 6 + > init/main.c | 2 + > kernel/Makefile | 6 + > kernel/kcsan/Makefile | 14 + > kernel/kcsan/atomic.c | 21 + > kernel/kcsan/core.c | 458 ++++++++++++++++++++++ > kernel/kcsan/debugfs.c | 225 +++++++++++ > kernel/kcsan/encoding.h | 94 +++++ > kernel/kcsan/kcsan.c | 81 ++++ > kernel/kcsan/kcsan.h | 140 +++++++ > kernel/kcsan/report.c | 307 +++++++++++++++ > kernel/kcsan/test.c | 117 ++++++ > kernel/sched/Makefile | 6 + > lib/Kconfig.debug | 2 + > lib/Kconfig.kcsan | 88 +++++ > lib/Makefile | 3 + > mm/Makefile | 8 + > scripts/Makefile.kcsan | 6 + > scripts/Makefile.lib | 10 + > scripts/atomic/gen-atomic-instrumented.sh | 9 +- > tools/objtool/check.c | 17 + > 46 files changed, 2364 insertions(+), 16 deletions(-) > create mode 100644 Documentation/dev-tools/kcsan.rst > create mode 100644 include/linux/kcsan-checks.h > create mode 100644 include/linux/kcsan.h > create mode 100644 kernel/kcsan/Makefile > create mode 100644 kernel/kcsan/atomic.c > create mode 100644 kernel/kcsan/core.c > create mode 100644 kernel/kcsan/debugfs.c > create mode 100644 kernel/kcsan/encoding.h > create mode 100644 kernel/kcsan/kcsan.c > create mode 100644 kernel/kcsan/kcsan.h > create mode 100644 kernel/kcsan/report.c > create mode 100644 kernel/kcsan/test.c > create mode 100644 lib/Kconfig.kcsan > create mode 100644 scripts/Makefile.kcsan > > -- > 2.23.0.700.g56cf767bdb-goog >
