* Borislav Petkov <bp@xxxxxxxxx> wrote:
> On Mon, Mar 16, 2015 at 11:20:38PM +0100, Denys Vlasenko wrote:
> > What's your config?
>
> Attached.
Could you try just this patch (on top of broken tip:master):
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 66a1954439ea..997e6a1c288f 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -496,6 +496,7 @@ struct thread_struct {
#ifdef CONFIG_X86_32
unsigned long sysenter_cs;
#else
+ unsigned long usersp; /* Copy from PDA */
unsigned short es;
unsigned short ds;
unsigned short fsindex;
to see whether it's the changed values of old_rsp, or the change in
sizeof(thread_struct), that causes the regression?
Thanks,
Ingo
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