From: Alexandre Ghiti alexandre.ghiti@canonical.com
commit c648c4bb7d02ceb53ee40172fdc4433b37cee9c6 upstream.
__virt_to_phys function is called very early in the boot process (ie kasan_early_init) so it should not be instrumented by KASAN otherwise it bugs.
Fix this by declaring phys_addr.c as non-kasan instrumentable.
Signed-off-by: Alexandre Ghiti alexandre.ghiti@canonical.com Fixes: 8ad8b72721d0 (riscv: Add KASAN support) Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt palmer@rivosinc.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/riscv/mm/Makefile | 3 +++ 1 file changed, 3 insertions(+)
--- a/arch/riscv/mm/Makefile +++ b/arch/riscv/mm/Makefile @@ -24,6 +24,9 @@ obj-$(CONFIG_KASAN) += kasan_init.o ifdef CONFIG_KASAN KASAN_SANITIZE_kasan_init.o := n KASAN_SANITIZE_init.o := n +ifdef CONFIG_DEBUG_VIRTUAL +KASAN_SANITIZE_physaddr.o := n +endif endif
obj-$(CONFIG_DEBUG_VIRTUAL) += physaddr.o