Unverified Commit c648c4bb authored Feb 25, 2022 by Alexandre Ghiti Committed by Palmer Dabbelt Mar 03, 2022

riscv: Fix config KASAN && DEBUG_VIRTUAL



__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: 8ad8b727 (riscv: Add KASAN support)
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

parent 5f763b3b

arch/riscv/mm/Makefile

+3 −0

Original line number	Diff line number	Diff line
		@@ -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