Memtest daily report

["Juan J. Quintela" <quintela@fi.udc.es>]

Hi
        I have been testing today pre7-1 with semicolon fix from Rik.
        I have found the following problems:

Problem 1:
        Executing:
                 while (true); do time ./mmap001; done 
        with the size of the mmaped file the same than the size of the
        memory.  It takes here to run the process normally around 25
        seconds, but sometimes it takes something like 5/8 minutes.
        This happens 1 each 6/7 times.  This problem was worst with
        pre6, there the times was 25 seconds and 54 minutes (yes one
        hour).  That machine is idle except for that process, no X, no
        console, ....  And now with pre7-1 that machine freezes, no
        console messages, nothing in the logs, no answer to network
        (only to ping).

Problem 2:
        Executing:
                 while (true); do time ./mmap002; done 
        I trigger the BUGs (in that order):
        kernel BUG at page_alloc.c:102!
        kernel BUG at page_alloc.c:104!
invalid operand: 0000
CPU:    0
EIP:    0010:[<c0125e0d>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 00000020   ebx: 00004883   ecx: 00000019   edx: 00000000
esi: c1000128   edi: 00000000   ebp: c5464d20   esp: c5fd7ed4
ds: 0018   es: 0018   ss: 0018
Process kswapd (pid: 2, stackpage=c5fd7000)
Stack: c01cb662 c01cb950 00000066 00004883 c1000128 c26ef6d8 c5464d20 00066400 
       c10eec40 c0125512 00000001 c10eec40 c0125421 4c1b7000 c26ef6d8 4c0b3000 
       4c400000 00066400 c0125664 c5f95e00 c5464d20 4c1b6000 c26ef6d8 00000004 
Call Trace: [<c01cb662>] [<c01cb950>] [<c0125512>] [<c0125421>] [<c0125664>] [<c
012572d>] [<c01258c5>] 
       [<c012599a>] [<c0125a5d>] [<c0107474>] 
Code: 0f 0b 83 c4 0c 83 7e 08 00 74 18 6a 68 68 50 b9 1c c0 68 62 
>>EIP; c0125e0d <__free_pages_ok+2d/2fc>   <=====
Trace; c01cb662 <tvecs+3462/1ade0>
Trace; c01cb950 <tvecs+3750/1ade0>
Trace; c0125512 <try_to_swap_out+1d2/204>
Trace; c0125421 <try_to_swap_out+e1/204>
Trace; c0125664 <swap_out_vma+120/1b0>
Trace; c012572d <swap_out_mm+39/64>
Trace; c01258c5 <swap_out+16d/1c0>
Trace; c012599a <do_try_to_free_pages+82/9c>
Trace; c0125a5d <kswapd+a9/12c>
Trace; c0107474 <kernel_thread+28/38>
Code;  c0125e0d <__free_pages_ok+2d/2fc>
00000000 <_EIP>:
Code;  c0125e0d <__free_pages_ok+2d/2fc>   <=====
   0:   0f 0b             ud2a      <=====
Code;  c0125e0f <__free_pages_ok+2f/2fc>
   2:   83 c4 0c          addl   $0xc,%esp
Code;  c0125e12 <__free_pages_ok+32/2fc>
   5:   83 7e 08 00       cmpl   $0x0,0x8(%esi)
Code;  c0125e16 <__free_pages_ok+36/2fc>
   9:   74 18             je     23 <_EIP+0x23> c0125e30 <__free_pages_ok+50/2fc
>
Code;  c0125e18 <__free_pages_ok+38/2fc>
   b:   6a 68             pushl  $0x68
Code;  c0125e1a <__free_pages_ok+3a/2fc>
   d:   68 50 b9 1c c0    pushl  $0xc01cb950
Code;  c0125e1f <__free_pages_ok+3f/2fc>
  12:   68 62 00 00 00    pushl  $0x62

and the second one:

invalid operand: 0000
CPU:    0
EIP:    0010:[<c0125e29>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 00000020   ebx: c1000144   ecx: 0000001b   edx: c5f95e00
esi: c1000128   edi: 00000000   ebp: c4be6980   esp: c4cb9d84
ds: 0018   es: 0018   ss: 0018
Process mmap002 (pid: 389, stackpage=c4cb9000)
Stack: c01cb662 c01cb950 00000068 c1000144 c4be6800 c4be6980 c4be6980 c0206ba4 
       c0206ba4 00000286 00000023 c4be6980 c012d317 c1000144 c1000128 c4cb9df8 
       0000007f 00000001 c011e3e7 c1000128 00000020 00000006 00000005 c0204cec 
Call Trace: [<c01cb662>] [<c01cb950>] [<c012d317>] [<c011e3e7>] [<c012594b>] [<c
0125b05>] [<c01263cc>] 
       [<c01264a4>] [<c011e9f0>] [<c011ff27>] [<c011c935>] [<c011caa0>] [<c010f1
f7>] [<c011a78a>] [<c011a891>] 
       [<c0117bd3>] [<c0117b28>] [<c0117a22>] [<c010a555>] [<c010964d>] 
Code: 0f 0b 83 c4 0c 89 f6 89 f1 2b 0d 2c 49 20 c0 8d 14 cd 00 00 


>>EIP; c0125e29 <__free_pages_ok+49/2fc>   <=====
Trace; c01cb662 <tvecs+3462/1ade0>
Trace; c01cb950 <tvecs+3750/1ade0>
Trace; c012d317 <try_to_free_buffers+11b/13c>
Trace; c011e3e7 <shrink_mmap+ff/2a0>
Trace; c012594b <do_try_to_free_pages+33/9c>
Trace; c0125b05 <try_to_free_pages+25/30>
Trace; c01263cc <zone_balance_memory+5c/8c>
Trace; c01264a4 <__alloc_pages+a8/dc>
Trace; c011e9f0 <read_cluster_nonblocking+b8/140>
Trace; c011ff27 <filemap_nopage+1a7/3ac>
Trace; c011c935 <do_no_page+4d/d0>
Trace; c011caa0 <handle_mm_fault+e8/154>
Trace; c010f1f7 <do_page_fault+187/4d0>
Trace; c011a78a <update_process_times+5a/60>
Trace; c011a891 <timer_bh+cd/2b4>
Trace; c0117bd3 <bh_action+1b/5c>
Trace; c0117b28 <tasklet_hi_action+38/60>
Trace; c0117a22 <do_softirq+52/78>
Trace; c010a555 <do_IRQ+a5/b4>
Trace; c010964d <error_code+2d/40>
Code;  c0125e29 <__free_pages_ok+49/2fc>
00000000 <_EIP>:
Code;  c0125e29 <__free_pages_ok+49/2fc>   <=====
   0:   0f 0b             ud2a      <=====
Code;  c0125e2b <__free_pages_ok+4b/2fc>
   2:   83 c4 0c          addl   $0xc,%esp
Code;  c0125e2e <__free_pages_ok+4e/2fc>
   5:   89 f6             movl   %esi,%esi
Code;  c0125e30 <__free_pages_ok+50/2fc>
   7:   89 f1             movl   %esi,%ecx
Code;  c0125e32 <__free_pages_ok+52/2fc>
   9:   2b 0d 2c 49 20    subl   0xc020492c,%ecx
Code;  c0125e37 <__free_pages_ok+57/2fc>
   e:   c0 
Code;  c0125e38 <__free_pages_ok+58/2fc>
   f:   8d 14 cd 00 00    leal   0x0(,%ecx,8),%edx
Code;  c0125e3d <__free_pages_ok+5d/2fc>
  14:   00 00 

Later, Juan.



-- 
In theory, practice and theory are the same, but in practice they 
are different -- Larry McVoy
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