kcsan: Instrument memcpy/memset/memmove with newer Clang

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With Clang version 16+, -fsanitize=thread will turn
memcpy/memset/memmove calls in instrumented functions into
__tsan_memcpy/__tsan_memset/__tsan_memmove calls respectively.

Add these functions to the core KCSAN runtime, so that we (a) catch data
races with mem* functions, and (b) won't run into linker errors with
such newer compilers.

Cc: stable@vger.kernel.org # v5.10+
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Marco Elver 2022-09-12 11:45:40 +02:00 • committed by Paul E. McKenney

parent 9abf2313ad

commit 7c201739be

1 changed files with 50 additions and 0 deletions

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kernel/kcsan/core.c

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