On Sat, 2012-01-21 at 20:49 -0800, Eric W. Biederman wrote:
> Sasha Levin <[email protected]> writes:
> 
> > Hi All,
> >
> > I got the following BUG() while running trinity within KVM tool.
> >
> > It looks like the result of a kexec_load(), but I couldn't find any
> > mention of it in the logs - which is strange since logs are supposed
> > to be flushed before actual syscall runs.
> 
> Interesting.
> 
> The fact that this happens in native_set_pte would suggest that we are
> trying to write to a page table that does not exist.  So this might
> be a layer below kexec_load that has the problem.
> 
> Do you have the kernel you were testing?    A disassembly of the
> native_set_pte, machine_kexec_prepare and sys_kexec_load
> would be interesting, for attempting to trace this back to what went
> wrong.

Yup, It's a pretty simple build of linux-next from today.

>From what I gather, native_set_pte is a simple short function, it also
gets inlined so the disassembly is pretty trivial. I've attached
disassembly of other two functions.

-- 

Sasha.
0000000000000c00 <sys_kexec_load>:
     c00:       55                      push   %rbp
     c01:       48 89 e5                mov    %rsp,%rbp
     c04:       48 81 ec 90 00 00 00    sub    $0x90,%rsp
     c0b:       48 89 5d d8             mov    %rbx,-0x28(%rbp)
     c0f:       4c 89 6d e8             mov    %r13,-0x18(%rbp)
     c13:       4c 89 75 f0             mov    %r14,-0x10(%rbp)
     c17:       4c 89 7d f8             mov    %r15,-0x8(%rbp)
     c1b:       4c 89 65 e0             mov    %r12,-0x20(%rbp)
     c1f:       49 89 d7                mov    %rdx,%r15
     c22:       49 89 fe                mov    %rdi,%r14
     c25:       48 89 f3                mov    %rsi,%rbx
     c28:       49 89 cd                mov    %rcx,%r13
     c2b:       bf 16 00 00 00          mov    $0x16,%edi
     c30:       e8 00 00 00 00          callq  c35 <sys_kexec_load+0x35>
     c35:       89 c2                   mov    %eax,%edx
     c37:       48 c7 c0 ff ff ff ff    mov    $0xffffffffffffffff,%rax
     c3e:       84 d2                   test   %dl,%dl
     c40:       75 1e                   jne    c60 <sys_kexec_load+0x60>
     c42:       48 8b 5d d8             mov    -0x28(%rbp),%rbx
     c46:       4c 8b 65 e0             mov    -0x20(%rbp),%r12
     c4a:       4c 8b 6d e8             mov    -0x18(%rbp),%r13
     c4e:       4c 8b 75 f0             mov    -0x10(%rbp),%r14
     c52:       4c 8b 7d f8             mov    -0x8(%rbp),%r15
     c56:       c9                      leaveq 
     c57:       c3                      retq   
     c58:       0f 1f 84 00 00 00 00    nopl   0x0(%rax,%rax,1)
     c5f:       00 
     c60:       b0 ea                   mov    $0xea,%al
     c62:       41 f7 c5 fc ff 00 00    test   $0xfffc,%r13d
     c69:       75 d7                   jne    c42 <sys_kexec_load+0x42>
     c6b:       4c 89 ea                mov    %r13,%rdx
     c6e:       81 e2 00 00 ff ff       and    $0xffff0000,%edx
     c74:       74 09                   je     c7f <sys_kexec_load+0x7f>
     c76:       48 81 fa 00 00 3e 00    cmp    $0x3e0000,%rdx
     c7d:       75 c3                   jne    c42 <sys_kexec_load+0x42>
     c7f:       48 c7 c0 ea ff ff ff    mov    $0xffffffffffffffea,%rax
     c86:       48 83 fb 10             cmp    $0x10,%rbx
     c8a:       77 b6                   ja     c42 <sys_kexec_load+0x42>
     c8c:       48 c7 c7 00 00 00 00    mov    $0x0,%rdi
     c93:       e8 00 00 00 00          callq  c98 <sys_kexec_load+0x98>
     c98:       89 c2                   mov    %eax,%edx
     c9a:       48 c7 c0 f0 ff ff ff    mov    $0xfffffffffffffff0,%rax
     ca1:       85 d2                   test   %edx,%edx
     ca3:       74 9d                   je     c42 <sys_kexec_load+0x42>
     ca5:       48 c7 45 a0 00 00 00    movq   $0x0,-0x60(%rbp)
     cac:       00 
     cad:       44 89 e8                mov    %r13d,%eax
     cb0:       83 e0 01                and    $0x1,%eax
     cb3:       89 45 94                mov    %eax,-0x6c(%rbp)
     cb6:       48 c7 c0 00 00 00 00    mov    $0x0,%rax
     cbd:       48 0f 44 45 a0          cmove  -0x60(%rbp),%rax
     cc2:       45 31 e4                xor    %r12d,%r12d
     cc5:       48 89 45 a0             mov    %rax,-0x60(%rbp)
     cc9:       48 85 db                test   %rbx,%rbx
     ccc:       0f 84 04 03 00 00       je     fd6 <sys_kexec_load+0x3d6>
     cd2:       41 f6 c5 01             test   $0x1,%r13b
     cd6:       0f 84 fd 03 00 00       je     10d9 <sys_kexec_load+0x4d9>
     cdc:       31 c0                   xor    %eax,%eax
     cde:       83 7d 94 00             cmpl   $0x0,-0x6c(%rbp)
     ce2:       0f 85 75 01 00 00       jne    e5d <sys_kexec_load+0x25d>
     ce8:       49 89 c4                mov    %rax,%r12
     ceb:       41 80 e5 02             and    $0x2,%r13b
     cef:       74 09                   je     cfa <sys_kexec_load+0xfa>
     cf1:       41 80 8c 24 78 02 00    orb    $0x2,0x278(%r12)
     cf8:       00 02 
     cfa:       4c 89 e7                mov    %r12,%rdi
     cfd:       e8 00 00 00 00          callq  d02 <sys_kexec_load+0x102>
     d02:       85 c0                   test   %eax,%eax
     d04:       0f 85 95 01 00 00       jne    e9f <sys_kexec_load+0x29f>
     d0a:       4d 89 e5                mov    %r12,%r13
     d0d:       48 c7 45 98 00 00 00    movq   $0x0,-0x68(%rbp)
     d14:       00 
     d15:       48 89 5d 80             mov    %rbx,-0x80(%rbp)
     d19:       41 f6 84 24 78 02 00    testb  $0x1,0x278(%r12)
     d20:       00 01 
     d22:       0f 85 bc 02 00 00       jne    fe4 <sys_kexec_load+0x3e4>
     d28:       49 8b 45 40             mov    0x40(%r13),%rax
     d2c:       4c 89 e7                mov    %r12,%rdi
     d2f:       48 89 45 b8             mov    %rax,-0x48(%rbp)
     d33:       49 8b 45 48             mov    0x48(%r13),%rax
     d37:       48 89 45 b0             mov    %rax,-0x50(%rbp)
     d3b:       4d 8b 75 50             mov    0x50(%r13),%r14
     d3f:       4d 8b 7d 58             mov    0x58(%r13),%r15
     d43:       4c 89 f3                mov    %r14,%rbx
     d46:       48 81 e3 00 f0 ff ff    and    $0xfffffffffffff000,%rbx
     d4d:       48 89 de                mov    %rbx,%rsi
     d50:       48 83 ce 01             or     $0x1,%rsi
     d54:       e8 c7 f8 ff ff          callq  620 <kimage_add_entry>
     d59:       83 f8 00                cmp    $0x0,%eax
     d5c:       0f 85 15 04 00 00       jne    1177 <sys_kexec_load+0x577>
     d62:       49 89 5c 24 18          mov    %rbx,0x18(%r12)
     d67:       4c 89 6d a8             mov    %r13,-0x58(%rbp)
     d6b:       4d 85 ff                test   %r15,%r15
     d6e:       0f 84 1a 02 00 00       je     f8e <sys_kexec_load+0x38e>
     d74:       4c 89 f2                mov    %r14,%rdx
     d77:       be d2 00 02 00          mov    $0x200d2,%esi
     d7c:       4c 89 e7                mov    %r12,%rdi
     d7f:       e8 dc f5 ff ff          callq  360 <kimage_alloc_page>
     d84:       48 85 c0                test   %rax,%rax
     d87:       0f 84 39 03 00 00       je     10c6 <sys_kexec_load+0x4c6>
     d8d:       48 bb 00 00 00 00 00    movabs $0x160000000000,%rbx
     d94:       16 00 00 
     d97:       4c 89 e7                mov    %r12,%rdi
     d9a:       48 8d 1c 18             lea    (%rax,%rbx,1),%rbx
     d9e:       48 c1 fb 06             sar    $0x6,%rbx
     da2:       48 c1 e3 0c             shl    $0xc,%rbx
     da6:       48 89 de                mov    %rbx,%rsi
     da9:       48 83 ce 08             or     $0x8,%rsi
     dad:       e8 6e f8 ff ff          callq  620 <kimage_add_entry>
     db2:       83 f8 00                cmp    $0x0,%eax
     db5:       0f 85 cd 01 00 00       jne    f88 <sys_kexec_load+0x388>
     dbb:       49 81 44 24 18 00 10    addq   $0x1000,0x18(%r12)
     dc2:       00 00 
     dc4:       31 d2                   xor    %edx,%edx
     dc6:       be 32 00 00 00          mov    $0x32,%esi
     dcb:       48 c7 c7 00 00 00 00    mov    $0x0,%rdi
     dd2:       e8 00 00 00 00          callq  dd7 <sys_kexec_load+0x1d7>
     dd7:       48 b8 00 00 00 00 00    movabs $0xffff880000000000,%rax
     dde:       88 ff ff 
     de1:       48 8d 04 03             lea    (%rbx,%rax,1),%rax
     de5:       bb 00 10 00 00          mov    $0x1000,%ebx
     dea:       48 89 c7                mov    %rax,%rdi
     ded:       48 89 85 78 ff ff ff    mov    %rax,-0x88(%rbp)
     df4:       e8 00 00 00 00          callq  df9 <sys_kexec_load+0x1f9>
     df9:       4c 8b 6d b0             mov    -0x50(%rbp),%r13
     dfd:       4c 89 f7                mov    %r14,%rdi
     e00:       81 e7 ff 0f 00 00       and    $0xfff,%edi
     e06:       48 29 fb                sub    %rdi,%rbx
     e09:       48 89 bd 70 ff ff ff    mov    %rdi,-0x90(%rbp)
     e10:       4c 39 fb                cmp    %r15,%rbx
     e13:       49 0f 47 df             cmova  %r15,%rbx
     e17:       48 3b 5d b0             cmp    -0x50(%rbp),%rbx
     e1b:       4c 0f 46 eb             cmovbe %rbx,%r13
     e1f:       e8 00 00 00 00          callq  e24 <sys_kexec_load+0x224>
     e24:       48 8b 85 78 ff ff ff    mov    -0x88(%rbp),%rax
     e2b:       48 8b bd 70 ff ff ff    mov    -0x90(%rbp),%rdi
     e32:       44 89 ea                mov    %r13d,%edx
     e35:       48 8d 3c 38             lea    (%rax,%rdi,1),%rdi
     e39:       48 8b 75 b8             mov    -0x48(%rbp),%rsi
     e3d:       e8 00 00 00 00          callq  e42 <sys_kexec_load+0x242>
     e42:       85 c0                   test   %eax,%eax
     e44:       0f 85 12 01 00 00       jne    f5c <sys_kexec_load+0x35c>
     e4a:       4c 29 6d b0             sub    %r13,-0x50(%rbp)
     e4e:       49 01 de                add    %rbx,%r14
     e51:       48 01 5d b8             add    %rbx,-0x48(%rbp)
     e55:       49 29 df                sub    %rbx,%r15
     e58:       e9 0e ff ff ff          jmpq   d6b <sys_kexec_load+0x16b>
     e5d:       4c 89 e7                mov    %r12,%rdi
     e60:       48 87 3d 00 00 00 00    xchg   %rdi,0x0(%rip)        # e67 
<sys_kexec_load+0x267>
     e67:       e8 f4 f3 ff ff          callq  260 <kimage_free>
     e6c:       48 c7 45 c8 00 00 00    movq   $0x0,-0x38(%rbp)
     e73:       00 
     e74:       b8 9d ff ff ff          mov    $0xffffff9d,%eax
     e79:       4c 3b 35 00 00 00 00    cmp    0x0(%rip),%r14        # e80 
<sys_kexec_load+0x280>
     e80:       73 44                   jae    ec6 <sys_kexec_load+0x2c6>
     e82:       89 85 78 ff ff ff       mov    %eax,-0x88(%rbp)
     e88:       48 8b 7d c8             mov    -0x38(%rbp),%rdi
     e8c:       45 31 e4                xor    %r12d,%r12d
     e8f:       e8 00 00 00 00          callq  e94 <sys_kexec_load+0x294>
     e94:       e8 00 00 00 00          callq  e99 <sys_kexec_load+0x299>
     e99:       8b 85 78 ff ff ff       mov    -0x88(%rbp),%eax
     e9f:       89 85 78 ff ff ff       mov    %eax,-0x88(%rbp)
     ea5:       48 c7 c7 00 00 00 00    mov    $0x0,%rdi
     eac:       e8 00 00 00 00          callq  eb1 <sys_kexec_load+0x2b1>
     eb1:       4c 89 e7                mov    %r12,%rdi
     eb4:       e8 a7 f3 ff ff          callq  260 <kimage_free>
     eb9:       8b 85 78 ff ff ff       mov    -0x88(%rbp),%eax
     ebf:       48 98                   cltq   
     ec1:       e9 7c fd ff ff          jmpq   c42 <sys_kexec_load+0x42>
     ec6:       4c 3b 35 00 00 00 00    cmp    0x0(%rip),%r14        # ecd 
<sys_kexec_load+0x2cd>
     ecd:       77 b3                   ja     e82 <sys_kexec_load+0x282>
     ecf:       48 8d 7d c8             lea    -0x38(%rbp),%rdi
     ed3:       4c 89 f9                mov    %r15,%rcx
     ed6:       48 89 da                mov    %rbx,%rdx
     ed9:       4c 89 f6                mov    %r14,%rsi
     edc:       e8 1f f8 ff ff          callq  700 <do_kimage_alloc>
     ee1:       85 c0                   test   %eax,%eax
     ee3:       75 9d                   jne    e82 <sys_kexec_load+0x282>
     ee5:       4c 8b 65 c8             mov    -0x38(%rbp),%r12
     ee9:       48 8b 0d 00 00 00 00    mov    0x0(%rip),%rcx        # ef0 
<sys_kexec_load+0x2f0>
     ef0:       4c 89 e0                mov    %r12,%rax
     ef3:       41 80 8c 24 78 02 00    orb    $0x1,0x278(%r12)
     efa:       00 01 
     efc:       49 89 8c 24 70 02 00    mov    %rcx,0x270(%r12)
     f03:       00 
     f04:       48 8b 3d 00 00 00 00    mov    0x0(%rip),%rdi        # f0b 
<sys_kexec_load+0x30b>
     f0b:       31 d2                   xor    %edx,%edx
     f0d:       48 8b 70 50             mov    0x50(%rax),%rsi
     f11:       4c 8b 40 58             mov    0x58(%rax),%r8
     f15:       48 39 f1                cmp    %rsi,%rcx
     f18:       77 4c                   ja     f66 <sys_kexec_load+0x366>
     f1a:       4a 8d 74 06 ff          lea    -0x1(%rsi,%r8,1),%rsi
     f1f:       48 39 fe                cmp    %rdi,%rsi
     f22:       77 42                   ja     f66 <sys_kexec_load+0x366>
     f24:       48 ff c2                inc    %rdx
     f27:       48 83 c0 20             add    $0x20,%rax
     f2b:       48 39 d3                cmp    %rdx,%rbx
     f2e:       77 dd                   ja     f0d <sys_kexec_load+0x30d>
     f30:       4c 89 e7                mov    %r12,%rdi
     f33:       be 01 00 00 00          mov    $0x1,%esi
     f38:       e8 00 00 00 00          callq  f3d <sys_kexec_load+0x33d>
     f3d:       49 89 44 24 28          mov    %rax,0x28(%r12)
     f42:       4c 8b 65 c8             mov    -0x38(%rbp),%r12
     f46:       49 83 7c 24 28 00       cmpq   $0x0,0x28(%r12)
     f4c:       74 22                   je     f70 <sys_kexec_load+0x370>
     f4e:       e8 00 00 00 00          callq  f53 <sys_kexec_load+0x353>
     f53:       e9 93 fd ff ff          jmpq   ceb <sys_kexec_load+0xeb>
     f58:       4c 8b 65 a8             mov    -0x58(%rbp),%r12
     f5c:       b8 f2 ff ff ff          mov    $0xfffffff2,%eax
     f61:       e9 39 ff ff ff          jmpq   e9f <sys_kexec_load+0x29f>
     f66:       b8 9d ff ff ff          mov    $0xffffff9d,%eax
     f6b:       e9 12 ff ff ff          jmpq   e82 <sys_kexec_load+0x282>
     f70:       48 c7 c7 00 00 00 00    mov    $0x0,%rdi
     f77:       31 c0                   xor    %eax,%eax
     f79:       e8 00 00 00 00          callq  f7e <sys_kexec_load+0x37e>
     f7e:       b8 f4 ff ff ff          mov    $0xfffffff4,%eax
     f83:       e9 fa fe ff ff          jmpq   e82 <sys_kexec_load+0x282>
     f88:       0f 8d 36 fe ff ff       jge    dc4 <sys_kexec_load+0x1c4>
     f8e:       4c 8b 6d a8             mov    -0x58(%rbp),%r13
     f92:       85 c0                   test   %eax,%eax
     f94:       0f 85 05 ff ff ff       jne    e9f <sys_kexec_load+0x29f>
     f9a:       48 ff 45 98             incq   -0x68(%rbp)
     f9e:       49 83 c5 20             add    $0x20,%r13
     fa2:       48 8b 45 98             mov    -0x68(%rbp),%rax
     fa6:       48 39 45 80             cmp    %rax,-0x80(%rbp)
     faa:       0f 87 69 fd ff ff       ja     d19 <sys_kexec_load+0x119>
     fb0:       49 8b 44 24 08          mov    0x8(%r12),%rax
     fb5:       48 83 38 00             cmpq   $0x0,(%rax)
     fb9:       74 09                   je     fc4 <sys_kexec_load+0x3c4>
     fbb:       48 83 c0 08             add    $0x8,%rax
     fbf:       49 89 44 24 08          mov    %rax,0x8(%r12)
     fc4:       48 c7 00 04 00 00 00    movq   $0x4,(%rax)
     fcb:       83 7d 94 00             cmpl   $0x0,-0x6c(%rbp)
     fcf:       74 05                   je     fd6 <sys_kexec_load+0x3d6>
     fd1:       e8 00 00 00 00          callq  fd6 <sys_kexec_load+0x3d6>
     fd6:       48 8b 45 a0             mov    -0x60(%rbp),%rax
     fda:       4c 87 20                xchg   %r12,(%rax)
     fdd:       31 c0                   xor    %eax,%eax
     fdf:       e9 bb fe ff ff          jmpq   e9f <sys_kexec_load+0x29f>
     fe4:       49 8b 45 40             mov    0x40(%r13),%rax
     fe8:       48 89 45 b0             mov    %rax,-0x50(%rbp)
     fec:       4d 8b 75 48             mov    0x48(%r13),%r14
     ff0:       49 8b 5d 58             mov    0x58(%r13),%rbx
     ff4:       49 8b 45 50             mov    0x50(%r13),%rax
     ff8:       4c 89 65 a8             mov    %r12,-0x58(%rbp)
     ffc:       48 89 45 b8             mov    %rax,-0x48(%rbp)
    1000:       48 85 db                test   %rbx,%rbx
    1003:       0f 84 c7 00 00 00       je     10d0 <sys_kexec_load+0x4d0>
    1009:       4c 8b 65 b8             mov    -0x48(%rbp),%r12
    100d:       48 b8 00 00 00 00 00    movabs $0xffffea0000000000,%rax
    1014:       ea ff ff 
    1017:       49 c1 ec 0c             shr    $0xc,%r12
    101b:       49 c1 e4 06             shl    $0x6,%r12
    101f:       49 8d 04 04             lea    (%r12,%rax,1),%rax
    1023:       48 85 c0                test   %rax,%rax
    1026:       0f 84 96 00 00 00       je     10c2 <sys_kexec_load+0x4c2>
    102c:       31 d2                   xor    %edx,%edx
    102e:       be 32 00 00 00          mov    $0x32,%esi
    1033:       48 c7 c7 00 00 00 00    mov    $0x0,%rdi
    103a:       41 bf 00 10 00 00       mov    $0x1000,%r15d
    1040:       e8 00 00 00 00          callq  1045 <sys_kexec_load+0x445>
    1045:       4c 89 e2                mov    %r12,%rdx
    1048:       48 b8 00 00 00 00 00    movabs $0xffff880000000000,%rax
    104f:       88 ff ff 
    1052:       48 c1 e2 06             shl    $0x6,%rdx
    1056:       48 01 c2                add    %rax,%rdx
    1059:       48 8b 45 b8             mov    -0x48(%rbp),%rax
    105d:       25 ff 0f 00 00          and    $0xfff,%eax
    1062:       48 01 c2                add    %rax,%rdx
    1065:       49 29 c7                sub    %rax,%r15
    1068:       48 89 55 88             mov    %rdx,-0x78(%rbp)
    106c:       49 39 df                cmp    %rbx,%r15
    106f:       4c 0f 47 fb             cmova  %rbx,%r15
    1073:       4d 89 fc                mov    %r15,%r12
    1076:       4d 39 f7                cmp    %r14,%r15
    1079:       76 17                   jbe    1092 <sys_kexec_load+0x492>
    107b:       48 8b 7d 88             mov    -0x78(%rbp),%rdi
    107f:       4c 89 fa                mov    %r15,%rdx
    1082:       4c 01 f7                add    %r14,%rdi
    1085:       4c 29 f2                sub    %r14,%rdx
    1088:       31 f6                   xor    %esi,%esi
    108a:       4d 89 f4                mov    %r14,%r12
    108d:       e8 00 00 00 00          callq  1092 <sys_kexec_load+0x492>
    1092:       e8 00 00 00 00          callq  1097 <sys_kexec_load+0x497>
    1097:       44 89 e2                mov    %r12d,%edx
    109a:       48 8b 75 b0             mov    -0x50(%rbp),%rsi
    109e:       48 8b 7d 88             mov    -0x78(%rbp),%rdi
    10a2:       e8 00 00 00 00          callq  10a7 <sys_kexec_load+0x4a7>
    10a7:       85 c0                   test   %eax,%eax
    10a9:       0f 85 a9 fe ff ff       jne    f58 <sys_kexec_load+0x358>
    10af:       4d 29 e6                sub    %r12,%r14
    10b2:       4c 01 7d b8             add    %r15,-0x48(%rbp)
    10b6:       4c 01 7d b0             add    %r15,-0x50(%rbp)
    10ba:       4c 29 fb                sub    %r15,%rbx
    10bd:       e9 3e ff ff ff          jmpq   1000 <sys_kexec_load+0x400>
    10c2:       4c 8b 65 a8             mov    -0x58(%rbp),%r12
    10c6:       b8 f4 ff ff ff          mov    $0xfffffff4,%eax
    10cb:       e9 cf fd ff ff          jmpq   e9f <sys_kexec_load+0x29f>
    10d0:       4c 8b 65 a8             mov    -0x58(%rbp),%r12
    10d4:       e9 c1 fe ff ff          jmpq   f9a <sys_kexec_load+0x39a>
    10d9:       48 c7 45 c8 00 00 00    movq   $0x0,-0x38(%rbp)
    10e0:       00 
    10e1:       48 8d 7d c8             lea    -0x38(%rbp),%rdi
    10e5:       4c 89 f9                mov    %r15,%rcx
    10e8:       48 89 da                mov    %rbx,%rdx
    10eb:       4c 89 f6                mov    %r14,%rsi
    10ee:       e8 0d f6 ff ff          callq  700 <do_kimage_alloc>
    10f3:       85 c0                   test   %eax,%eax
    10f5:       75 51                   jne    1148 <sys_kexec_load+0x548>
    10f7:       4c 8b 65 c8             mov    -0x38(%rbp),%r12
    10fb:       be 01 00 00 00          mov    $0x1,%esi
    1100:       4c 89 e7                mov    %r12,%rdi
    1103:       e8 00 00 00 00          callq  1108 <sys_kexec_load+0x508>
    1108:       49 89 44 24 28          mov    %rax,0x28(%r12)
    110d:       4c 8b 75 c8             mov    -0x38(%rbp),%r14
    1111:       49 83 7e 28 00          cmpq   $0x0,0x28(%r14)
    1116:       74 4a                   je     1162 <sys_kexec_load+0x562>
    1118:       31 f6                   xor    %esi,%esi
    111a:       4c 89 f7                mov    %r14,%rdi
    111d:       e8 00 00 00 00          callq  1122 <sys_kexec_load+0x522>
    1122:       49 89 46 30             mov    %rax,0x30(%r14)
    1126:       48 8b 45 c8             mov    -0x38(%rbp),%rax
    112a:       48 83 78 30 00          cmpq   $0x0,0x30(%rax)
    112f:       0f 85 b3 fb ff ff       jne    ce8 <sys_kexec_load+0xe8>
    1135:       48 c7 c7 00 00 00 00    mov    $0x0,%rdi
    113c:       31 c0                   xor    %eax,%eax
    113e:       e8 00 00 00 00          callq  1143 <sys_kexec_load+0x543>
    1143:       b8 f4 ff ff ff          mov    $0xfffffff4,%eax
    1148:       89 85 78 ff ff ff       mov    %eax,-0x88(%rbp)
    114e:       48 8b 7d c8             mov    -0x38(%rbp),%rdi
    1152:       e8 00 00 00 00          callq  1157 <sys_kexec_load+0x557>
    1157:       8b 85 78 ff ff ff       mov    -0x88(%rbp),%eax
    115d:       e9 3d fd ff ff          jmpq   e9f <sys_kexec_load+0x29f>
    1162:       48 c7 c7 00 00 00 00    mov    $0x0,%rdi
    1169:       31 c0                   xor    %eax,%eax
    116b:       e8 00 00 00 00          callq  1170 <sys_kexec_load+0x570>
    1170:       b8 f4 ff ff ff          mov    $0xfffffff4,%eax
    1175:       eb d1                   jmp    1148 <sys_kexec_load+0x548>
    1177:       0f 8d ea fb ff ff       jge    d67 <sys_kexec_load+0x167>
    117d:       0f 1f 00                nopl   (%rax)
    1180:       e9 0d fe ff ff          jmpq   f92 <sys_kexec_load+0x392>
    1185:       66 66 2e 0f 1f 84 00    data32 nopw %cs:0x0(%rax,%rax,1)
    118c:       00 00 00 00 

0000000000000040 <machine_kexec_prepare>:
  40:   55                      push   %rbp
  41:   48 b9 00 00 00 00 00    movabs $0x160000000000,%rcx
  48:   16 00 00 
  4b:   48 89 e5                mov    %rsp,%rbp
  4e:   48 89 c8                mov    %rcx,%rax
  51:   41 57                   push   %r15
  53:   48 ba 00 00 00 00 00    movabs $0xffff880000000000,%rdx
  5a:   88 ff ff 
  5d:   41 56                   push   %r14
  5f:   41 55                   push   %r13
  61:   41 54                   push   %r12
  63:   53                      push   %rbx
  64:   48 83 ec 58             sub    $0x58,%rsp
  68:   48 89 7d c0             mov    %rdi,-0x40(%rbp)
  6c:   48 03 47 28             add    0x28(%rdi),%rax
  70:   48 c1 f8 06             sar    $0x6,%rax
  74:   48 c1 e0 0c             shl    $0xc,%rax
  78:   48 01 d0                add    %rdx,%rax
  7b:   48 89 45 98             mov    %rax,-0x68(%rbp)
  7f:   48 8b 05 00 00 00 00    mov    0x0(%rip),%rax        # 86 
<machine_kexec_prepare+0x46>
  86:   48 c1 e0 0c             shl    $0xc,%rax
  8a:   48 89 45 b8             mov    %rax,-0x48(%rbp)
  8e:   48 85 c0                test   %rax,%rax
  91:   0f 84 b1 07 00 00       je     848 <machine_kexec_prepare+0x808>
  97:   48 8b 7d 98             mov    -0x68(%rbp),%rdi
  9b:   48 c7 45 a8 00 00 00    movq   $0x0,-0x58(%rbp)
  a2:   00 
  a3:   48 89 7d a0             mov    %rdi,-0x60(%rbp)
  a7:   31 f6                   xor    %esi,%esi
  a9:   48 8b 7d c0             mov    -0x40(%rbp),%rdi
  ad:   e8 00 00 00 00          callq  b2 <machine_kexec_prepare+0x72>
  b2:   48 85 c0                test   %rax,%rax
  b5:   0f 84 c1 05 00 00       je     67c <machine_kexec_prepare+0x63c>
  bb:   48 ba 00 00 00 00 00    movabs $0x160000000000,%rdx
  c2:   16 00 00 
  c5:   48 bf 00 00 00 00 00    movabs $0xffff880000000000,%rdi
  cc:   88 ff ff 
  cf:   48 01 d0                add    %rdx,%rax
  d2:   4c 8b 75 a8             mov    -0x58(%rbp),%r14
  d6:   48 c1 f8 06             sar    $0x6,%rax
  da:   49 81 e6 00 f0 ff ff    and    $0xfffffffffffff000,%r14
  e1:   48 c1 e0 0c             shl    $0xc,%rax
  e5:   48 01 c7                add    %rax,%rdi
  e8:   48 b8 00 00 00 00 80    movabs $0x8000000000,%rax
  ef:   00 00 00 
  f2:   48 89 7d 90             mov    %rdi,-0x70(%rbp)
  f6:   4c 01 f0                add    %r14,%rax
  f9:   48 89 7d c8             mov    %rdi,-0x38(%rbp)
  fd:   48 89 45 b0             mov    %rax,-0x50(%rbp)
 101:   49 39 c6                cmp    %rax,%r14
 104:   0f 83 22 01 00 00       jae    22c <machine_kexec_prepare+0x1ec>
 10a:   66 0f 1f 44 00 00       nopw   0x0(%rax,%rax,1)
 110:   4c 39 75 b8             cmp    %r14,-0x48(%rbp)
 114:   0f 86 12 01 00 00       jbe    22c <machine_kexec_prepare+0x1ec>
 11a:   31 f6                   xor    %esi,%esi
 11c:   48 8b 7d c0             mov    -0x40(%rbp),%rdi
 120:   e8 00 00 00 00          callq  125 <machine_kexec_prepare+0xe5>
 125:   48 85 c0                test   %rax,%rax
 128:   0f 84 4e 05 00 00       je     67c <machine_kexec_prepare+0x63c>
 12e:   49 bf 00 00 00 00 00    movabs $0x160000000000,%r15
 135:   16 00 00 
 138:   48 ba 00 00 00 00 00    movabs $0xffff880000000000,%rdx
 13f:   88 ff ff 
 142:   4e 8d 3c 38             lea    (%rax,%r15,1),%r15
 146:   4c 89 f3                mov    %r14,%rbx
 149:   49 c1 ff 06             sar    $0x6,%r15
 14d:   48 81 e3 00 f0 ff ff    and    $0xfffffffffffff000,%rbx
 154:   49 c1 e7 0c             shl    $0xc,%r15
 158:   4c 8d ab 00 00 00 40    lea    0x40000000(%rbx),%r13
 15f:   49 01 d7                add    %rdx,%r15
 162:   4c 39 eb                cmp    %r13,%rbx
 165:   73 6b                   jae    1d2 <machine_kexec_prepare+0x192>
 167:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 16f 
<machine_kexec_prepare+0x12f>
 16e:   00 
 16f:   0f 84 1b 05 00 00       je     690 <machine_kexec_prepare+0x650>
 175:   48 89 df                mov    %rbx,%rdi
 178:   4d 89 fc                mov    %r15,%r12
 17b:   48 81 cf e3 01 00 00    or     $0x1e3,%rdi
 182:   eb 20                   jmp    1a4 <machine_kexec_prepare+0x164>
 184:   0f 1f 40 00             nopl   0x0(%rax)
 188:   49 83 c4 08             add    $0x8,%r12
 18c:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 194 
<machine_kexec_prepare+0x154>
 193:   00 
 194:   0f 84 f6 04 00 00       je     690 <machine_kexec_prepare+0x650>
 19a:   48 89 df                mov    %rbx,%rdi
 19d:   48 81 cf e3 01 00 00    or     $0x1e3,%rdi
 1a4:   ff 14 25 00 00 00 00    callq  *0x0
 1ab:   48 89 c6                mov    %rax,%rsi
 1ae:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 1b6 
<machine_kexec_prepare+0x176>
 1b5:   00 
 1b6:   0f 84 d6 04 00 00       je     692 <machine_kexec_prepare+0x652>
 1bc:   4c 89 e7                mov    %r12,%rdi
 1bf:   ff 14 25 00 00 00 00    callq  *0x0
 1c6:   48 81 c3 00 00 20 00    add    $0x200000,%rbx
 1cd:   49 39 dd                cmp    %rbx,%r13
 1d0:   77 b6                   ja     188 <machine_kexec_prepare+0x148>
 1d2:   4c 89 ff                mov    %r15,%rdi
 1d5:   e8 00 00 00 00          callq  1da <machine_kexec_prepare+0x19a>
 1da:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 1e2 
<machine_kexec_prepare+0x1a2>
 1e1:   00 
 1e2:   0f 84 5e 06 00 00       je     846 <machine_kexec_prepare+0x806>
 1e8:   48 89 c7                mov    %rax,%rdi
 1eb:   48 83 cf 63             or     $0x63,%rdi
 1ef:   ff 14 25 00 00 00 00    callq  *0x0
 1f6:   48 89 c6                mov    %rax,%rsi
 1f9:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 201 
<machine_kexec_prepare+0x1c1>
 200:   00 
 201:   0f 84 28 06 00 00       je     82f <machine_kexec_prepare+0x7ef>
 207:   48 83 45 c8 08          addq   $0x8,-0x38(%rbp)
 20c:   48 8b 7d c8             mov    -0x38(%rbp),%rdi
 210:   48 83 ef 08             sub    $0x8,%rdi
 214:   ff 14 25 00 00 00 00    callq  *0x0
 21b:   49 81 c6 00 00 00 40    add    $0x40000000,%r14
 222:   4c 39 75 b0             cmp    %r14,-0x50(%rbp)
 226:   0f 87 e4 fe ff ff       ja     110 <machine_kexec_prepare+0xd0>
 22c:   4c 39 75 b0             cmp    %r14,-0x50(%rbp)
 230:   76 65                   jbe    297 <machine_kexec_prepare+0x257>
 232:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 23a 
<machine_kexec_prepare+0x1fa>
 239:   00 
 23a:   0f 84 06 06 00 00       je     846 <machine_kexec_prepare+0x806>
 240:   48 8b 5d c8             mov    -0x38(%rbp),%rbx
 244:   48 8b 55 c8             mov    -0x38(%rbp),%rdx
 248:   48 83 c3 08             add    $0x8,%rbx
 24c:   4c 8b 65 b0             mov    -0x50(%rbp),%r12
 250:   eb 15                   jmp    267 <machine_kexec_prepare+0x227>
 252:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 25a 
<machine_kexec_prepare+0x21a>
 259:   00 
 25a:   0f 84 e6 05 00 00       je     846 <machine_kexec_prepare+0x806>
 260:   48 89 da                mov    %rbx,%rdx
 263:   48 83 c3 08             add    $0x8,%rbx
 267:   31 ff                   xor    %edi,%edi
 269:   ff 14 25 00 00 00 00    callq  *0x0
 270:   48 89 c6                mov    %rax,%rsi
 273:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 27b 
<machine_kexec_prepare+0x23b>
 27a:   00 
 27b:   0f 84 ae 05 00 00       je     82f <machine_kexec_prepare+0x7ef>
 281:   48 89 d7                mov    %rdx,%rdi
 284:   ff 14 25 00 00 00 00    callq  *0x0
 28b:   49 81 c6 00 00 00 40    add    $0x40000000,%r14
 292:   4d 39 f4                cmp    %r14,%r12
 295:   77 bb                   ja     252 <machine_kexec_prepare+0x212>
 297:   48 8b 7d 90             mov    -0x70(%rbp),%rdi
 29b:   e8 00 00 00 00          callq  2a0 <machine_kexec_prepare+0x260>
 2a0:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 2a8 
<machine_kexec_prepare+0x268>
 2a7:   00 
 2a8:   0f 84 96 05 00 00       je     844 <machine_kexec_prepare+0x804>
 2ae:   48 89 c6                mov    %rax,%rsi
 2b1:   48 83 ce 63             or     $0x63,%rsi
 2b5:   48 89 f7                mov    %rsi,%rdi
 2b8:   ff 14 25 00 00 00 00    callq  *0x0
 2bf:   48 89 c6                mov    %rax,%rsi
 2c2:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 2ca 
<machine_kexec_prepare+0x28a>
 2c9:   00 
 2ca:   0f 84 8d 05 00 00       je     85d <machine_kexec_prepare+0x81d>
 2d0:   48 83 45 a0 08          addq   $0x8,-0x60(%rbp)
 2d5:   48 8b 7d a0             mov    -0x60(%rbp),%rdi
 2d9:   48 83 ef 08             sub    $0x8,%rdi
 2dd:   ff 14 25 00 00 00 00    callq  *0x0
 2e4:   48 b8 00 00 00 00 80    movabs $0x8000000000,%rax
 2eb:   00 00 00 
 2ee:   48 ba ff ff ff ff ff    movabs $0xffffffffffff,%rdx
 2f5:   ff 00 00 
 2f8:   48 01 45 a8             add    %rax,-0x58(%rbp)
 2fc:   48 39 55 a8             cmp    %rdx,-0x58(%rbp)
 300:   77 0e                   ja     310 <machine_kexec_prepare+0x2d0>
 302:   48 8b 7d a8             mov    -0x58(%rbp),%rdi
 306:   48 39 7d b8             cmp    %rdi,-0x48(%rbp)
 30a:   0f 87 97 fd ff ff       ja     a7 <machine_kexec_prepare+0x67>
 310:   48 8b 5d a0             mov    -0x60(%rbp),%rbx
 314:   49 bd ff ff ff ff ff    movabs $0xffffffffffff,%r13
 31b:   ff 00 00 
 31e:   45 31 e4                xor    %r12d,%r12d
 321:   49 be 00 00 00 00 80    movabs $0x8000000000,%r14
 328:   00 00 00 
 32b:   4c 8b 7d a8             mov    -0x58(%rbp),%r15
 32f:   eb 3a                   jmp    36b <machine_kexec_prepare+0x32b>
 331:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 339 
<machine_kexec_prepare+0x2f9>
 338:   00 
 339:   0f 84 05 05 00 00       je     844 <machine_kexec_prepare+0x804>
 33f:   4c 89 e7                mov    %r12,%rdi
 342:   ff 14 25 00 00 00 00    callq  *0x0
 349:   48 89 c6                mov    %rax,%rsi
 34c:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 354 
<machine_kexec_prepare+0x314>
 353:   00 
 354:   0f 84 03 05 00 00       je     85d <machine_kexec_prepare+0x81d>
 35a:   48 89 df                mov    %rbx,%rdi
 35d:   ff 14 25 00 00 00 00    callq  *0x0
 364:   4d 01 f7                add    %r14,%r15
 367:   48 83 c3 08             add    $0x8,%rbx
 36b:   4d 39 ef                cmp    %r13,%r15
 36e:   76 c1                   jbe    331 <machine_kexec_prepare+0x2f1>
 370:   48 8b 45 c0             mov    -0x40(%rbp),%rax
 374:   48 8b 58 20             mov    0x20(%rax),%rbx
 378:   48 81 e3 00 00 e0 ff    and    $0xffffffffffe00000,%rbx
 37f:   49 89 dc                mov    %rbx,%r12
 382:   49 c1 ec 24             shr    $0x24,%r12
 386:   41 81 e4 f8 0f 00 00    and    $0xff8,%r12d
 38d:   4c 03 65 98             add    -0x68(%rbp),%r12
 391:   41 f6 04 24 01          testb  $0x1,(%r12)
 396:   0f 84 16 04 00 00       je     7b2 <machine_kexec_prepare+0x772>
 39c:   49 8b 04 24             mov    (%r12),%rax
 3a0:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 3a8 
<machine_kexec_prepare+0x368>
 3a7:   00 
 3a8:   0f 84 02 04 00 00       je     7b0 <machine_kexec_prepare+0x770>
 3ae:   48 89 c7                mov    %rax,%rdi
 3b1:   ff 14 25 00 00 00 00    callq  *0x0
 3b8:   49 bd 00 00 00 00 00    movabs $0xffff880000000000,%r13
 3bf:   88 ff ff 
 3c2:   48 89 da                mov    %rbx,%rdx
 3c5:   48 b9 00 f0 ff ff ff    movabs $0x3ffffffff000,%rcx
 3cc:   3f 00 00 
 3cf:   48 c1 ea 1b             shr    $0x1b,%rdx
 3d3:   48 21 c8                and    %rcx,%rax
 3d6:   81 e2 f8 0f 00 00       and    $0xff8,%edx
 3dc:   4c 01 ea                add    %r13,%rdx
 3df:   4c 8d 24 02             lea    (%rdx,%rax,1),%r12
 3e3:   41 f6 04 24 01          testb  $0x1,(%r12)
 3e8:   0f 84 46 03 00 00       je     734 <machine_kexec_prepare+0x6f4>
 3ee:   49 8b 04 24             mov    (%r12),%rax
 3f2:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 3fa 
<machine_kexec_prepare+0x3ba>
 3f9:   00 
 3fa:   0f 84 32 03 00 00       je     732 <machine_kexec_prepare+0x6f2>
 400:   48 89 c7                mov    %rax,%rdi
 403:   ff 14 25 00 00 00 00    callq  *0x0
 40a:   48 b9 00 00 00 00 00    movabs $0xffff880000000000,%rcx
 411:   88 ff ff 
 414:   48 89 da                mov    %rbx,%rdx
 417:   48 c1 ea 12             shr    $0x12,%rdx
 41b:   81 e2 f8 0f 00 00       and    $0xff8,%edx
 421:   48 01 ca                add    %rcx,%rdx
 424:   48 b9 00 f0 ff ff ff    movabs $0x3ffffffff000,%rcx
 42b:   3f 00 00 
 42e:   48 21 c8                and    %rcx,%rax
 431:   48 01 c2                add    %rax,%rdx
 434:   f6 02 01                testb  $0x1,(%rdx)
 437:   0f 84 57 02 00 00       je     694 <machine_kexec_prepare+0x654>
 43d:   48 8b 55 c0             mov    -0x40(%rbp),%rdx
 441:   49 c7 c4 00 00 00 00    mov    $0x0,%r12
 448:   48 b8 00 00 00 00 00    movabs $0x160000000000,%rax
 44f:   16 00 00 
 452:   4c 89 e3                mov    %r12,%rbx
 455:   48 03 42 28             add    0x28(%rdx),%rax
 459:   48 c1 eb 24             shr    $0x24,%rbx
 45d:   48 c1 f8 06             sar    $0x6,%rax
 461:   48 ba 00 00 00 00 00    movabs $0xffff880000000000,%rdx
 468:   88 ff ff 
 46b:   48 c1 e0 0c             shl    $0xc,%rax
 46f:   81 e3 f8 0f 00 00       and    $0xff8,%ebx
 475:   48 8d bc 10 00 10 00    lea    0x1000(%rax,%rdx,1),%rdi
 47c:   00 
 47d:   e8 00 00 00 00          callq  482 <machine_kexec_prepare+0x442>
 482:   48 03 5d 98             add    -0x68(%rbp),%rbx
 486:   49 89 c5                mov    %rax,%r13
 489:   f6 03 01                testb  $0x1,(%rbx)
 48c:   75 60                   jne    4ee <machine_kexec_prepare+0x4ae>
 48e:   bf d0 00 00 00          mov    $0xd0,%edi
 493:   e8 00 00 00 00          callq  498 <machine_kexec_prepare+0x458>
 498:   48 85 c0                test   %rax,%rax
 49b:   0f 84 90 03 00 00       je     831 <machine_kexec_prepare+0x7f1>
 4a1:   48 8b 55 c0             mov    -0x40(%rbp),%rdx
 4a5:   48 89 c7                mov    %rax,%rdi
 4a8:   48 89 82 80 02 00 00    mov    %rax,0x280(%rdx)
 4af:   e8 00 00 00 00          callq  4b4 <machine_kexec_prepare+0x474>
 4b4:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 4bc 
<machine_kexec_prepare+0x47c>
 4bb:   00 
 4bc:   0f 84 82 03 00 00       je     844 <machine_kexec_prepare+0x804>
 4c2:   48 89 c6                mov    %rax,%rsi
 4c5:   48 83 ce 63             or     $0x63,%rsi
 4c9:   48 89 f7                mov    %rsi,%rdi
 4cc:   ff 14 25 00 00 00 00    callq  *0x0
 4d3:   48 89 c6                mov    %rax,%rsi
 4d6:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 4de 
<machine_kexec_prepare+0x49e>
 4dd:   00 
 4de:   0f 84 79 03 00 00       je     85d <machine_kexec_prepare+0x81d>
 4e4:   48 89 df                mov    %rbx,%rdi
 4e7:   ff 14 25 00 00 00 00    callq  *0x0
 4ee:   48 8b 03                mov    (%rbx),%rax
 4f1:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 4f9 
<machine_kexec_prepare+0x4b9>
 4f8:   00 
 4f9:   0f 84 b1 02 00 00       je     7b0 <machine_kexec_prepare+0x770>
 4ff:   48 89 c7                mov    %rax,%rdi
 502:   ff 14 25 00 00 00 00    callq  *0x0
 509:   48 b9 00 00 00 00 00    movabs $0xffff880000000000,%rcx
 510:   88 ff ff 
 513:   4c 89 e2                mov    %r12,%rdx
 516:   48 c1 ea 1b             shr    $0x1b,%rdx
 51a:   81 e2 f8 0f 00 00       and    $0xff8,%edx
 520:   48 01 ca                add    %rcx,%rdx
 523:   48 b9 00 f0 ff ff ff    movabs $0x3ffffffff000,%rcx
 52a:   3f 00 00 
 52d:   48 21 c8                and    %rcx,%rax
 530:   48 8d 1c 02             lea    (%rdx,%rax,1),%rbx
 534:   f6 03 01                testb  $0x1,(%rbx)
 537:   75 60                   jne    599 <machine_kexec_prepare+0x559>
 539:   bf d0 00 00 00          mov    $0xd0,%edi
 53e:   e8 00 00 00 00          callq  543 <machine_kexec_prepare+0x503>
 543:   48 85 c0                test   %rax,%rax
 546:   0f 84 e5 02 00 00       je     831 <machine_kexec_prepare+0x7f1>
 54c:   48 8b 55 c0             mov    -0x40(%rbp),%rdx
 550:   48 89 c7                mov    %rax,%rdi
 553:   48 89 82 88 02 00 00    mov    %rax,0x288(%rdx)
 55a:   e8 00 00 00 00          callq  55f <machine_kexec_prepare+0x51f>
 55f:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 567 
<machine_kexec_prepare+0x527>
 566:   00 
 567:   0f 84 d9 02 00 00       je     846 <machine_kexec_prepare+0x806>
 56d:   48 89 c6                mov    %rax,%rsi
 570:   48 83 ce 63             or     $0x63,%rsi
 574:   48 89 f7                mov    %rsi,%rdi
 577:   ff 14 25 00 00 00 00    callq  *0x0
 57e:   48 89 c6                mov    %rax,%rsi
 581:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 589 
<machine_kexec_prepare+0x549>
 588:   00 
 589:   0f 84 a0 02 00 00       je     82f <machine_kexec_prepare+0x7ef>
 58f:   48 89 df                mov    %rbx,%rdi
 592:   ff 14 25 00 00 00 00    callq  *0x0
 599:   48 8b 03                mov    (%rbx),%rax
 59c:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 5a4 
<machine_kexec_prepare+0x564>
 5a3:   00 
 5a4:   0f 84 88 01 00 00       je     732 <machine_kexec_prepare+0x6f2>
 5aa:   48 89 c7                mov    %rax,%rdi
 5ad:   ff 14 25 00 00 00 00    callq  *0x0
 5b4:   48 b9 00 00 00 00 00    movabs $0xffff880000000000,%rcx
 5bb:   88 ff ff 
 5be:   4c 89 e2                mov    %r12,%rdx
 5c1:   48 c1 ea 12             shr    $0x12,%rdx
 5c5:   81 e2 f8 0f 00 00       and    $0xff8,%edx
 5cb:   48 01 ca                add    %rcx,%rdx
 5ce:   48 b9 00 f0 ff ff ff    movabs $0x3ffffffff000,%rcx
 5d5:   3f 00 00 
 5d8:   48 21 c8                and    %rcx,%rax
 5db:   48 8d 1c 02             lea    (%rdx,%rax,1),%rbx
 5df:   f6 03 01                testb  $0x1,(%rbx)
 5e2:   0f 84 e9 00 00 00       je     6d1 <machine_kexec_prepare+0x691>
 5e8:   48 8b 13                mov    (%rbx),%rdx
 5eb:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 5f3 
<machine_kexec_prepare+0x5b3>
 5f2:   00 
 5f3:   0f 84 d6 00 00 00       je     6cf <machine_kexec_prepare+0x68f>
 5f9:   48 89 d7                mov    %rdx,%rdi
 5fc:   ff 14 25 00 00 00 00    callq  *0x0
 603:   48 89 c2                mov    %rax,%rdx
 606:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 60e 
<machine_kexec_prepare+0x5ce>
 60d:   00 
 60e:   48 8b 05 00 00 00 00    mov    0x0(%rip),%rax        # 615 
<machine_kexec_prepare+0x5d5>
 615:   0f 84 b2 00 00 00       je     6cd <machine_kexec_prepare+0x68d>
 61b:   4c 89 ee                mov    %r13,%rsi
 61e:   25 63 01 00 00          and    $0x163,%eax
 623:   48 81 e6 00 f0 ff ff    and    $0xfffffffffffff000,%rsi
 62a:   48 09 c6                or     %rax,%rsi
 62d:   48 89 f7                mov    %rsi,%rdi
 630:   ff 14 25 00 00 00 00    callq  *0x0
 637:   48 89 c6                mov    %rax,%rsi
 63a:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 642 
<machine_kexec_prepare+0x602>
 641:   00 
 642:   0f 84 83 00 00 00       je     6cb <machine_kexec_prepare+0x68b>
 648:   49 c1 ec 09             shr    $0x9,%r12
 64c:   48 b8 00 f0 ff ff ff    movabs $0x3ffffffff000,%rax
 653:   3f 00 00 
 656:   41 81 e4 f8 0f 00 00    and    $0xff8,%r12d
 65d:   48 21 c2                and    %rax,%rdx
 660:   48 bf 00 00 00 00 00    movabs $0xffff880000000000,%rdi
 667:   88 ff ff 
 66a:   49 8d 3c 3c             lea    (%r12,%rdi,1),%rdi
 66e:   48 01 d7                add    %rdx,%rdi
 671:   ff 14 25 00 00 00 00    callq  *0x0
 678:   31 c0                   xor    %eax,%eax
 67a:   eb 05                   jmp    681 <machine_kexec_prepare+0x641>
 67c:   b8 f4 ff ff ff          mov    $0xfffffff4,%eax
 681:   48 83 c4 58             add    $0x58,%rsp
 685:   5b                      pop    %rbx
 686:   41 5c                   pop    %r12
 688:   41 5d                   pop    %r13
 68a:   41 5e                   pop    %r14
 68c:   41 5f                   pop    %r15
 68e:   c9                      leaveq 
 68f:   c3                      retq   
 690:   0f 0b                   ud2    
 692:   0f 0b                   ud2    
 694:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 69c 
<machine_kexec_prepare+0x65c>
 69b:   00 
 69c:   74 f2                   je     690 <machine_kexec_prepare+0x650>
 69e:   48 81 cb e3 01 00 00    or     $0x1e3,%rbx
 6a5:   48 89 df                mov    %rbx,%rdi
 6a8:   ff 14 25 00 00 00 00    callq  *0x0
 6af:   48 89 c6                mov    %rax,%rsi
 6b2:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 6ba 
<machine_kexec_prepare+0x67a>
 6b9:   00 
 6ba:   74 d6                   je     692 <machine_kexec_prepare+0x652>
 6bc:   48 89 d7                mov    %rdx,%rdi
 6bf:   ff 14 25 00 00 00 00    callq  *0x0
 6c6:   e9 72 fd ff ff          jmpq   43d <machine_kexec_prepare+0x3fd>
 6cb:   0f 0b                   ud2    
 6cd:   0f 0b                   ud2    
 6cf:   0f 0b                   ud2    
 6d1:   bf d0 00 00 00          mov    $0xd0,%edi
 6d6:   e8 00 00 00 00          callq  6db <machine_kexec_prepare+0x69b>
 6db:   48 85 c0                test   %rax,%rax
 6de:   0f 84 4d 01 00 00       je     831 <machine_kexec_prepare+0x7f1>
 6e4:   48 8b 55 c0             mov    -0x40(%rbp),%rdx
 6e8:   48 89 c7                mov    %rax,%rdi
 6eb:   48 89 82 90 02 00 00    mov    %rax,0x290(%rdx)
 6f2:   e8 00 00 00 00          callq  6f7 <machine_kexec_prepare+0x6b7>
 6f7:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 6ff 
<machine_kexec_prepare+0x6bf>
 6fe:   00 
 6ff:   74 8f                   je     690 <machine_kexec_prepare+0x650>
 701:   48 89 c6                mov    %rax,%rsi
 704:   48 83 ce 63             or     $0x63,%rsi
 708:   48 89 f7                mov    %rsi,%rdi
 70b:   ff 14 25 00 00 00 00    callq  *0x0
 712:   48 89 c6                mov    %rax,%rsi
 715:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 71d 
<machine_kexec_prepare+0x6dd>
 71c:   00 
 71d:   0f 84 6f ff ff ff       je     692 <machine_kexec_prepare+0x652>
 723:   48 89 df                mov    %rbx,%rdi
 726:   ff 14 25 00 00 00 00    callq  *0x0
 72d:   e9 b6 fe ff ff          jmpq   5e8 <machine_kexec_prepare+0x5a8>
 732:   0f 0b                   ud2    
 734:   31 f6                   xor    %esi,%esi
 736:   48 8b 7d c0             mov    -0x40(%rbp),%rdi
 73a:   e8 00 00 00 00          callq  73f <machine_kexec_prepare+0x6ff>
 73f:   48 85 c0                test   %rax,%rax
 742:   0f 84 34 ff ff ff       je     67c <machine_kexec_prepare+0x63c>
 748:   48 ba 00 00 00 00 00    movabs $0x160000000000,%rdx
 74f:   16 00 00 
 752:   48 01 d0                add    %rdx,%rax
 755:   48 c1 f8 06             sar    $0x6,%rax
 759:   48 c1 e0 0c             shl    $0xc,%rax
 75d:   4e 8d 2c 28             lea    (%rax,%r13,1),%r13
 761:   4c 89 ef                mov    %r13,%rdi
 764:   e8 00 00 00 00          callq  769 <machine_kexec_prepare+0x729>
 769:   4c 89 ef                mov    %r13,%rdi
 76c:   e8 00 00 00 00          callq  771 <machine_kexec_prepare+0x731>
 771:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 779 
<machine_kexec_prepare+0x739>
 778:   00 
 779:   0f 84 c7 00 00 00       je     846 <machine_kexec_prepare+0x806>
 77f:   48 89 c6                mov    %rax,%rsi
 782:   48 83 ce 63             or     $0x63,%rsi
 786:   48 89 f7                mov    %rsi,%rdi
 789:   ff 14 25 00 00 00 00    callq  *0x0
 790:   48 89 c6                mov    %rax,%rsi
 793:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 79b 
<machine_kexec_prepare+0x75b>
 79a:   00 
 79b:   0f 84 8e 00 00 00       je     82f <machine_kexec_prepare+0x7ef>
 7a1:   4c 89 e7                mov    %r12,%rdi
 7a4:   ff 14 25 00 00 00 00    callq  *0x0
 7ab:   e9 3e fc ff ff          jmpq   3ee <machine_kexec_prepare+0x3ae>
 7b0:   0f 0b                   ud2    
 7b2:   31 f6                   xor    %esi,%esi
 7b4:   48 89 c7                mov    %rax,%rdi
 7b7:   e8 00 00 00 00          callq  7bc <machine_kexec_prepare+0x77c>
 7bc:   48 85 c0                test   %rax,%rax
 7bf:   0f 84 b7 fe ff ff       je     67c <machine_kexec_prepare+0x63c>
 7c5:   48 ba 00 00 00 00 00    movabs $0x160000000000,%rdx
 7cc:   16 00 00 
 7cf:   49 bd 00 00 00 00 00    movabs $0xffff880000000000,%r13
 7d6:   88 ff ff 
 7d9:   48 01 d0                add    %rdx,%rax
 7dc:   48 c1 f8 06             sar    $0x6,%rax
 7e0:   48 c1 e0 0c             shl    $0xc,%rax
 7e4:   4e 8d 2c 28             lea    (%rax,%r13,1),%r13
 7e8:   4c 89 ef                mov    %r13,%rdi
 7eb:   e8 00 00 00 00          callq  7f0 <machine_kexec_prepare+0x7b0>
 7f0:   4c 89 ef                mov    %r13,%rdi
 7f3:   e8 00 00 00 00          callq  7f8 <machine_kexec_prepare+0x7b8>
 7f8:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 800 
<machine_kexec_prepare+0x7c0>
 7ff:   00 
 800:   74 42                   je     844 <machine_kexec_prepare+0x804>
 802:   48 89 c6                mov    %rax,%rsi
 805:   48 83 ce 63             or     $0x63,%rsi
 809:   48 89 f7                mov    %rsi,%rdi
 80c:   ff 14 25 00 00 00 00    callq  *0x0
 813:   48 89 c6                mov    %rax,%rsi
 816:   48 83 3d 00 00 00 00    cmpq   $0x0,0x0(%rip)        # 81e 
<machine_kexec_prepare+0x7de>
 81d:   00 
 81e:   74 3d                   je     85d <machine_kexec_prepare+0x81d>
 820:   4c 89 e7                mov    %r12,%rdi
 823:   ff 14 25 00 00 00 00    callq  *0x0
 82a:   e9 6d fb ff ff          jmpq   39c <machine_kexec_prepare+0x35c>
 82f:   0f 0b                   ud2    
 831:   48 8b 7d c0             mov    -0x40(%rbp),%rdi
 835:   e8 c6 f7 ff ff          callq  0 <free_transition_pgtable>
 83a:   b8 f4 ff ff ff          mov    $0xfffffff4,%eax
 83f:   e9 3d fe ff ff          jmpq   681 <machine_kexec_prepare+0x641>
 844:   0f 0b                   ud2    
 846:   0f 0b                   ud2    
 848:   48 8b 45 98             mov    -0x68(%rbp),%rax
 84c:   48 c7 45 a8 00 00 00    movq   $0x0,-0x58(%rbp)
 853:   00 
 854:   48 89 45 a0             mov    %rax,-0x60(%rbp)
 858:   e9 b3 fa ff ff          jmpq   310 <machine_kexec_prepare+0x2d0>
 85d:   0f 0b                   ud2    
 85f:   90                      nop

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