selftests/bpf: Add arena ASAN runtime to libarena

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Add an address sanitizer (ASAN) runtime to the arena library. The
ASAN runtime implements the functions injected into BPF binaries
by LLVM sanitization when ASAN is enabled during compilation.

The runtime also includes functions called explicitly by memory
allocation code to mark memory as poisoned/unpoisoned to ASAN.
This code is a no-op when sanitization is turned off.

Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260426190338.4615-5-emil@etsalapatis.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Emil Tsalapatis 2026-04-26 15:03:34 -04:00 • committed by Alexei Starovoitov

parent 8c1e1c33fe

commit 9ab78691eb

3 changed files with 657 additions and 0 deletions

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103

tools/testing/selftests/bpf/libarena/include/libarena/asan.h

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1

tools/testing/selftests/bpf/libarena/include/libarena/common.h

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553

tools/testing/selftests/bpf/libarena/src/asan.bpf.c

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