• Naohiro Aota's avatar
    x86/mm: disable instrumentations of mm/pgprot.c · 818c4fda
    Naohiro Aota authored
    Commit 4867fbbd ("x86/mm: move protection_map[] inside the platform")
    moved accesses to protection_map[] from mem_encrypt_amd.c to pgprot.c.  As
    a result, the accesses are now targets of KASAN (and other
    instrumentations), leading to the crash during the boot process.
    
    Disable the instrumentations for pgprot.c like commit 67bb8e99
    ("x86/mm: Disable various instrumentations of mm/mem_encrypt.c and
    mm/tlb.c").
    
    Before this patch, my AMD machine cannot boot since v6.0-rc1 with KASAN
    enabled, without anything printed.  After the change, it successfully
    boots up.
    
    Fixes: 4867fbbd ("x86/mm: move protection_map[] inside the platform")
    Link: https://lkml.kernel.org/r/20220824084726.2174758-1-naohiro.aota@wdc.comSigned-off-by: default avatarNaohiro Aota <naohiro.aota@wdc.com>
    Cc: Anshuman Khandual <anshuman.khandual@arm.com>
    Cc: Andy Lutomirski <luto@kernel.org>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Dave Hansen <dave.hansen@linux.intel.com>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    818c4fda
Makefile 2.04 KB