58ff537109ac863d4ec83baf8413b17dcc10101c - linux

commit	58ff537109ac863d4ec83baf8413b17dcc10101c	[log] [tgz]
author	Samuel Holland <samuel.holland@sifive.com>	Wed Jul 31 20:36:59 2024 -0700
committer	Palmer Dabbelt <palmer@rivosinc.com>	Thu Sep 19 01:10:00 2024 -0700
tree	9bd118c81ca4582e270c84a880b298c195e35b1e
parent	8400291e289ee6b2bf9779ff1c83a291501f017b [diff]

riscv: Omit optimized string routines when using KASAN

The optimized string routines are implemented in assembly, so they are
not instrumented for use with KASAN. Fall back to the C version of the
routines in order to improve KASAN coverage. This fixes the
kasan_strings() unit test.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240801033725.28816-2-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

arch/riscv/include/asm/string.h[diff]
arch/riscv/kernel/riscv_ksyms.c[diff]
arch/riscv/lib/Makefile[diff]
arch/riscv/lib/strcmp.S[diff]
arch/riscv/lib/strlen.S[diff]
arch/riscv/lib/strncmp.S[diff]
arch/riscv/purgatory/Makefile[diff]

7 files changed

tree: 9bd118c81ca4582e270c84a880b298c195e35b1e