Re: [PATCH] Linux-2.5 fix/improve get_pid()

From: Paul Larson (plars@austin.ibm.com)
Date: Fri Aug 09 2002 - 15:13:35 EST


On Fri, 2002-08-09 at 14:34, Paul Larson wrote:
> I suspect that it would actually require more than just this. I tried
> this with the same test I've been using and had several failed attepmts
> at low numbers by getting wierd unexpected signals (like 28), and then
> one that ran for a much longer time and produced an oops with random
> garbage to the console (trying to extract this now).
>
> -Paul Larson
Here's the ksymoops output minus the unprintable chars that got sent
after it:

Unable to handle kernel paging request at virtual address 32313256
c015cb38
*pde = 37184001
Oops: 0000
CPU: 4
0010:[<c015cb38>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010202
eax: d9768090 ebx: d9768090 ecx: 00000020 edx: 32313232
esi: c015cb10 edi: d9768090 ebp: 00000008 esp: f6cb9e34
ds: 0018 es: 0018 ss: 0018
Stack: c0151403 d9768090 d9768090 f6dabaa0 c01515ad d9768090 f6dabab8
c014f49b
d9768090 f6dabaa0 c0139fa3 00000020 00000001 000001d0 c013a21a c013a170
000001f8 f6cb9e7c 00000020 00000001 000001d0 000041e6 c014f8f0 00000010
Call Trace: [<c0151403>] [<c01515ad>] [<c014f49b>] [<c0139fa3>]
[<c013a21a>]
[<c013a170>] [<c014f8f0>] [<c0131f9e>] [<c0131fec>] [<c0132c64>]
[<c0132fa2>]
[<c0133010>] [<c0116717>] [<c0117186>] [<c011793e>] [<c0105bc5>]
[<c0107173>]
Code: 8b 42 24 85 c0 74 0b f0 ff 48 10 8b 42 24 83 48 14 08 52 e8

>>EIP; c015cb38 <proc_delete_inode+28/50> <=====
Trace; c0151403 <generic_delete_inode+83/b0>
Trace; c01515ad <iput+5d/60>
Trace; c014f49b <prune_dcache+eb/180>
Trace; c0139fa3 <pdflush_operation+83/90>
Trace; c013a21a <wakeup_bdflush+1a/20>
Trace; c013a170 <background_writeout+0/90>
Trace; c014f8f0 <shrink_dcache_memory+20/40>
Trace; c0131f9e <shrink_caches+7e/a0>
Trace; c0131fec <try_to_free_pages+2c/50>
Trace; c0132c64 <balance_classzone+44/1f0>
Trace; c0132fa2 <__alloc_pages+192/1f0>
Trace; c0133010 <__get_free_pages+10/20>
Trace; c0116717 <dup_task_struct+17/70>
Trace; c0117186 <copy_process+56/7f0>
Trace; c011793e <do_fork+1e/a0>
Trace; c0105bc5 <sys_fork+15/30>
Trace; c0107173 <syscall_call+7/b>
Code; c015cb38 <proc_delete_inode+28/50>
00000000 <_EIP>:
Code; c015cb38 <proc_delete_inode+28/50> <=====
   0: 8b 42 24 mov 0x24(%edx),%eax <=====
Code; c015cb3b <proc_delete_inode+2b/50>
   3: 85 c0 test %eax,%eax
Code; c015cb3d <proc_delete_inode+2d/50>
   5: 74 0b je 12 <_EIP+0x12> c015cb4a
<proc_delete_inode+3a/50>
Code; c015cb3f <proc_delete_inode+2f/50>
   7: f0 ff 48 10 lock decl 0x10(%eax)
Code; c015cb43 <proc_delete_inode+33/50>
   b: 8b 42 24 mov 0x24(%edx),%eax
Code; c015cb46 <proc_delete_inode+36/50>
   e: 83 48 14 08 orl $0x8,0x14(%eax)
Code; c015cb4a <proc_delete_inode+3a/50>
  12: 52 push %edx
Code; c015cb4b <proc_delete_inode+3b/50>
  13: e8 00 00 00 00 call 18 <_EIP+0x18> c015cb50
<proc_delete_inode+40/50>

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This archive was generated by hypermail 2b29 : Thu Aug 15 2002 - 22:00:20 EST