Messages in this thread | | | Date | Tue, 13 Dec 2016 18:51:29 +0100 | From | Borislav Petkov <> | Subject | Re: WARNING: kernel stack frame pointer at ffffffff82e03f40 in swapper:0 has bad value (null) |
| |
On Tue, Dec 13, 2016 at 08:55:53AM -0800, Andy Lutomirski wrote: > I want to file a GCC bug, though. This code sucks.
Looks like it started doing that with gcc-5. gcc-4.9 output looks fine here:
.globl x86_64_start_kernel .type x86_64_start_kernel, @function x86_64_start_kernel: .LFB2013: .loc 1 134 0 .cfi_startproc pushq %rbp # .cfi_def_cfa_offset 16 .cfi_offset 6, -16 movq %rsp, %rbp #, .cfi_def_cfa_register 6 pushq %rbx # .cfi_offset 3, -24 .loc 1 134 0 movq %rdi, %rbx # real_mode_data, real_mode_data .LBB157: .LBB158: .LBB159: .LBB160: .LBB161: .loc 3 69 0 #APP # 69 "./arch/x86/include/asm/special_insns.h" 1 mov %cr4,%rax # val
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
| |