On Tue, Jul 11, 2017 at 07:45:48PM +0300, Andrey Ryabinin wrote: > On 07/11/2017 06:15 PM, Andrey Ryabinin wrote: > > > > I reproduced this, and this is kasan bug: > > > > │0xffffffff84864897 <x86_early_init_platform_quirks+5> mov > > $0xffffffff83f1d0b8,%rdi > > │0xffffffff8486489e <x86_early_init_platform_quirks+12> movabs > > $0xdffffc0000000000,%rax > > │0xffffffff848648a8 <x86_early_init_platform_quirks+22> push %rbp > > │0xffffffff848648a9 <x86_early_init_platform_quirks+23> mov > > %rdi,%rdx > > │0xffffffff848648ac <x86_early_init_platform_quirks+26> shr $0x3,%rdx > > │0xffffffff848648b0 <x86_early_init_platform_quirks+30> mov %rsp,%rbp > > >│0xffffffff848648b3 <x86_early_init_platform_quirks+33> mov > > (%rdx,%rax,1),%al > > > > we crash on the last move which is a read from shadow > > > Ughh, I forgot about phys_base.
Thanks! Works for me. Can use your Signed-off-by for a [cleaned up version of your] patch? -- Kirill A. Shutemov
