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authorAlexandre Ghiti <alex@ghiti.fr>2021-03-13 03:45:04 -0500
committerPalmer Dabbelt <palmerdabbelt@google.com>2021-03-16 21:55:18 -0700
commitf3773dd031de7b283227f6104049688f77074a2d (patch)
treed00ee08c022dde7136179bbdb659a114d0104b9d /arch/riscv
parentce989f1472ae350e844b10c880b22543168fbc92 (diff)
downloadlinux-f3773dd031de7b283227f6104049688f77074a2d.tar.gz
riscv: Ensure page table writes are flushed when initializing KASAN vmalloc
Make sure that writes to kernel page table during KASAN vmalloc initialization are made visible by adding a sfence.vma. Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Fixes: e178d670f251 ("riscv/kasan: add KASAN_VMALLOC support") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/mm/kasan_init.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c
index 3fc18f469efb..5c35e0f71e88 100644
--- a/arch/riscv/mm/kasan_init.c
+++ b/arch/riscv/mm/kasan_init.c
@@ -187,6 +187,8 @@ void __init kasan_shallow_populate(void *start, void *end)
}
vaddr += PAGE_SIZE;
}
+
+ local_flush_tlb_all();
}
void __init kasan_init(void)