On Fri, 13 May, at 10:06:10AM, Steven Rostedt wrote:
> Matt,
>
> This bug looks very similar to what you were hitting with the function
> profiler. Can you apply this patch and see if it fixes the issue for
> you.
Yep, this patch fixes it for me.
For the record, this is what objdump tells me (with patch applied),
00000000000000b6 <ftrace_epilogue>:
b6: eb 03 jmp bb <ftrace_stub>
b8: 90 nop
b9: 90 nop
ba: 90 nop
So my toolchain is definitely generating a short jump. This is
binutils 2.26.
But on one of my other test machines with binutils 2.24 I see this,
00000000000000aa <ftrace_epilogue>:
aa: e9 00 00 00 00 jmpq af <ftrace_stub>
ab: R_X86_64_PC32 ftrace_stub-0x4
i.e. a near jump.
