Physical addresses in KASan shadow region page tables need fixup: kernel halts without it if phys_base is not zero.
Signed-off-by: Alexander Popov <[email protected]> --- arch/x86/kernel/head_64.S | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index ae6588b..f7711bb 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -95,6 +95,20 @@ startup_64: addq %rbp, level2_fixmap_pgt + (506*8)(%rip) +#ifdef CONFIG_KASAN + xor %rax, %rax + leaq kasan_zero_pud(%rip), %rbx + leaq kasan_zero_pmd(%rip), %rcx + leaq kasan_zero_pte(%rip), %rdx +1: + addq %rbp, (%rbx,%rax,8) + addq %rbp, (%rcx,%rax,8) + addq %rbp, (%rdx,%rax,8) + inc %rax + cmp $512, %rax + jne 1b +#endif + /* * Set up the identity mapping for the switchover. These * entries should *NOT* have the global bit set! This also -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
