Hi,
I hit this kernel BUG while playing a little with mrtg on a vanilla
2.4.20-rc1-ac1.
ksymoops 2.4.6 on i686 2.4.20-rc1-ac1. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.20-rc1-ac1/ (default)
-m /boot/System.map (specified)
Nov 15 01:45:03 pikelot kernel: kernel BUG at page_alloc.c:127!
Nov 15 01:45:03 pikelot kernel: invalid operand: 0000
Nov 15 01:45:03 pikelot kernel: CPU: 0
Nov 15 01:45:03 pikelot kernel: EIP: 0010:[__free_pages_ok+217/912] Not tainted
Nov 15 01:45:03 pikelot kernel: EFLAGS: 00010286
Nov 15 01:45:03 pikelot kernel: eax: 01000010 ebx: c127a9a8 ecx: c127a9c4 edx: c127a990
Nov 15 01:45:03 pikelot kernel: esi: 00000000 edi: 086f6000 ebp: 00100000 esp: cd38bee0
Nov 15 01:45:03 pikelot kernel: ds: 0018 es: 0018 ss: 0018
Nov 15 01:45:03 pikelot kernel: Process mrtg (pid: 2357, stackpage=cd38b000)
Nov 15 01:45:03 pikelot kernel: Stack: c127a9a8 00080000 086f6000 00100000 0001eff0 c100000c c127a9dc c103400c
Nov 15 01:45:03 pikelot kernel: c0220b98 00000212 c127a9a8 c0220b00 c01313fe c012e163 c012e603 c127a9a8
Nov 15 01:45:03 pikelot kernel: c0121b70 c127a9a8 cbf22dd8 c0121fdd 0c343067 d94b4940 db4cf680 0045d000
Nov 15 01:45:03 pikelot kernel: Call Trace: [page_remove_rmap+126/160] [__free_pages+19/32] [free_page_and_swap_cache+51/64] [__free_pte+64/80] [zap_page_range+429/624]
Nov 15 01:45:03 pikelot kernel: Code: 0f 0b 7f 00 43 6e 1f c0 8b 43 18 24 eb 89 43 18 c6 43 24 05
>>ebx; c127a9a8 <_end+fdca90/2056f148>
>>ecx; c127a9c4 <_end+fdcaac/2056f148>
>>edx; c127a990 <_end+fdca78/2056f148>
>>esp; cd38bee0 <_end+d0edfc8/2056f148>
Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 0f 0b ud2a
Code; 00000002 Before first symbol
2: 7f 00 jg 4 <_EIP+0x4> 00000004 Before first symbol
Code; 00000004 Before first symbol
4: 43 inc %ebx
Code; 00000005 Before first symbol
5: 6e outsb %ds:(%esi),(%dx)
Code; 00000006 Before first symbol
6: 1f pop %ds
Code; 00000007 Before first symbol
7: c0 8b 43 18 24 eb 89 rorb $0x89,0xeb241843(%ebx)
Code; 0000000e Before first symbol
e: 43 inc %ebx
Code; 0000000f Before first symbol
f: 18 c6 sbb %al,%dh
Code; 00000011 Before first symbol
11: 43 inc %ebx
Code; 00000012 Before first symbol
12: 24 05 and $0x5,%al
Karsten