Re: 2.4.x SMP Kernel Exception (Bug?)

From: Aaron M. Folmsbee (
Date: Mon Apr 30 2001 - 01:30:01 EST

----- Original Message -----
From: "Ville Herva" <>
To: "Aaron M. Folmsbee" <>
Sent: Sunday, April 29, 2001 12:39 AM
Subject: Re: 2.4.x SMP Kernel Exception (Bug?)

> Please feed it through ksymoops (see Documentation/oops-tracing.txt and
> sure your matches the kernel in question).
> You are sure that your hardware is not faulty? Has it been running
> with other kernels? What happens if you swap the CPU's and run in in UP
> mode? Have you run memtest86?

The hardware has run 2.3x SMP kernels successfully for over a year.

I tried running the 2.4.4 kernel that is crashing with the 'nosmp' option,
and it booted ok.

The ksymoops output:

ksymoops 2.4.0 on i686 2.4.4. Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.4/ (default)
     -m (specified)

Warning (compare_maps): ksyms_base symbol
__VERSIONED_SYMBOL(shmem_file_setup) not found in Ignoring
ksyms_base entry
invalid operand: 0000
CPU: 0
EIP: 0010:[<c010c630>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 0183fbff ebx: cba52000 ecx: c02d0000 edx: cba52000
esi: c02d0000 edi: c02d0350 edp: 00000000 esp: c02d1f74
ds: 0018 es:0018 ss:0018
Process swapper (pid: 0, stackpage=c02d1000)
Stack: c010581d cba52000 c0305800 cba52350 cba52000 cbd87a40 00000000
        c0110e66 c02d1fd4 00000001 cdb87a40 c01051b0 cba52000 c02d0000
        c02d0000 00000030 00000000 c02d0000 c0309440 c01051b0 c02d0000
           [<c01051b0>] [<c010526e>] [<c0105000>] [<c01001cf>]
Code: 0f ae 82 90 03 00 00 db e2 eb 0c 90 8d 74 26 00 dd b2 90 03

>>EIP; c010c630 <save_init_fpu+10/40> <=====
Code; c010c630 <save_init_fpu+10/40>
00000000 <_EIP>:
Code; c010c630 <save_init_fpu+10/40> <=====
   0: 0f ae 82 90 03 00 00 fxsave 0x390(%edx) <=====
Code; c010c637 <save_init_fpu+17/40>
   7: db e2 fnclex
Code; c010c639 <save_init_fpu+19/40>
   9: eb 0c jmp 17 <_EIP+0x17> c010c647
Code; c010c63b <save_init_fpu+1b/40>
   b: 90 nop
Code; c010c63c <save_init_fpu+1c/40>
   c: 8d 74 26 00 lea 0x0(%esi,1),%esi
Code; c010c640 <save_init_fpu+20/40>
  10: dd b2 90 03 00 00 fnsave 0x390(%edx)

Kernel panic: Attempted to kill the idle task!

1 warning issued. Results may not be reliable.

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This archive was generated by hypermail 2b29 : Mon Apr 30 2001 - 21:00:23 EST