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riscv: Fix config KASAN && DEBUG_VIRTUAL

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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: 8ad8b72721 (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>
This commit is contained in:
Alexandre Ghiti 2022-02-25 13:39:51 +01:00 committed by Greg Kroah-Hartman
parent 7211aab288
commit dd9dd24fd7
1 changed files with 3 additions and 0 deletions
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3
arch/riscv/mm/Makefile
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@ -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