[Crash-utility] Re: source line numbers and modules

[Bryn M. Reeves]

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Dave Anderson wrote:
> RHEL4 x86_64 doesn't appear to work though...
>

That's what I'm seeing - broken on RHEL4 x86_64 (on various kernels:
- -55.EL, -67.EL)

      KERNEL: /usr/lib/debug/lib/modules/2.6.9-55.ELsmp/vmlinux
    DUMPFILE: /dev/crash
        CPUS: 8
        DATE: Wed Jan 16 18:53:23 2008
      UPTIME: 8 days, 20:14:38
LOAD AVERAGE: 0.98, 0.36, 0.12
       TASKS: 127
    NODENAME: hs21-8853-1.gsslab.rdu.redhat.com
     RELEASE: 2.6.9-55.ELsmp
     VERSION: #1 SMP Fri Apr 20 16:36:54 EDT 2007
     MACHINE: x86_64  (1866 Mhz)
      MEMORY: 1 GB
         PID: 23313
     COMMAND: "crash"
        TASK: 1003c2057f0  [THREAD_INFO: 1001aa52000]
         CPU: 1
       STATE: TASK_RUNNING (ACTIVE)

crash> mod -S
<snip>

crash> dis -l ext3_count_dirs
include/linux/seqlock.h: 77
0xffffffffa00a81e2 <ext3_count_dirs>:   push   %r12
0xffffffffa00a81e4 <ext3_count_dirs+2>: xor    %r12d,%r12d
0xffffffffa00a81e7 <ext3_count_dirs+5>: push   %rbp
0xffffffffa00a81e8 <ext3_count_dirs+6>: xor    %ebp,%ebp
0xffffffffa00a81ea <ext3_count_dirs+8>: push   %rbx
0xffffffffa00a81eb <ext3_count_dirs+9>: mov    0x260(%rdi),%rax
0xffffffffa00a81f2 <ext3_count_dirs+16>:        mov    %rdi,%rbx
0xffffffffa00a81f5 <ext3_count_dirs+19>:        cmp    0x48(%rax),%r12
0xffffffffa00a81f9 <ext3_count_dirs+23>:        jae
0xffffffffa00a8226 <ext3_count_dirs+68>
0xffffffffa00a81fb <ext3_count_dirs+25>:        xor    %edx,%edx
0xffffffffa00a81fd <ext3_count_dirs+27>:        mov    %ebp,%esi
0xffffffffa00a81ff <ext3_count_dirs+29>:        mov    %rbx,%rdi
0xffffffffa00a8202 <ext3_count_dirs+32>:        callq
0xffffffffa00a5000 <ext3_get_group_desc>
0xffffffffa00a8207 <ext3_count_dirs+37>:        test   %rax,%rax
0xffffffffa00a820a <ext3_count_dirs+40>:        je
0xffffffffa00a8214 <ext3_count_dirs+50>
0xffffffffa00a820c <ext3_count_dirs+42>:        movzwq 0x10(%rax),%rax
0xffffffffa00a8211 <ext3_count_dirs+47>:        add    %rax,%r12
0xffffffffa00a8214 <ext3_count_dirs+50>:        mov    0x260(%rbx),%rax
0xffffffffa00a821b <ext3_count_dirs+57>:        inc    %ebp
0xffffffffa00a821d <ext3_count_dirs+59>:        movslq %ebp,%rdx
0xffffffffa00a8220 <ext3_count_dirs+62>:        cmp    0x48(%rax),%rdx
0xffffffffa00a8224 <ext3_count_dirs+66>:        jmp
0xffffffffa00a81f9 <ext3_count_dirs+23>
0xffffffffa00a8226 <ext3_count_dirs+68>:        pop    %rbx
0xffffffffa00a8227 <ext3_count_dirs+69>:        pop    %rbp
0xffffffffa00a8228 <ext3_count_dirs+70>:        mov    %r12,%rax
0xffffffffa00a822b <ext3_count_dirs+73>:        pop    %r12
0xffffffffa00a822d <ext3_count_dirs+75>:        retq
0xffffffffa00a822e <ext3_count_dirs+76>:        nop
0xffffffffa00a822f <ext3_count_dirs+77>:        nop

Regards,
Bryn.

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