The relevant system recently is generally "unstable": and locks up about
once a week.
The system is Mandrake 8.1. It originally had kernel 2.4.18-6mdk (from
mandrake 8.2). After some unexplained incidents I decided to move to
2.4.20-pre5 .
In the mandrake kernel I got no oops messages in my logs. I did get one
occasion where the system hanged due to memory allocation problems, e.g:
kernel: ENOMEM in journal_start_R6facca98, retrying.
(which kept appearing)
What follows refers to the 2.4.20-pre5 kernel:
I am not sure exactly how to reproduce the bug. running 'memtest' seems to
help creating instabilities, but I think it takes some extra load.
The system generally becomes unstable: segfaulting many processes. After I
pressed 'alt-sysrq-M' (show memory) on one occasion it hanged the system
hard.
It seems that running two 'memtest' instances' at the same time hangs the
system immidiately and freezes all the processes: only a alt-sysreq reboot
helps. memtester-2.93.1-3mdk from mandrake 8.1 . Is this expected? This
was the only easily-reproducable way I could find to hang the system, but
it did not produce any oops report, so I'm not sure it is exactly the same
problem.
I tried testing the system with memtest86 (version memtest86-2.7-1mdk). in
some 3 hours of testing I once got a series of errors in test #5, but
could not reproduce it. Any indication of what can I make from that?
(memtester has not yet found any error. It seems it only managed to lock
128MB of memory for its tests)
Does this look like a hardware issue? Any indication of what hardware it
may be?
Please CC me any replies.
Rest of the details follow:
Kernel Version:
Linux version 2.4.20-pre5 (root@yarden.gadot.org.il) (gcc version 2.96
20000731 (Mandrake Linux 8.1 2.96-0.63.1mdk)) #1 Mon Sep 9 01:50:30 IDT
2002
Memory: 256MB ram, 256MB swap.
Sample errors:
Both of those are were the first oopses, and seem to got the system into
an unstablestate. Though processes only stated bailing out a couple of
hours later in each case:
Sep 27 02:25:12 yarden kernel: kernel BUG at page_alloc.c:231!
Sep 27 02:25:12 yarden kernel: invalid operand: 0000
Sep 27 02:25:12 yarden kernel: CPU: 0
Sep 27 02:25:12 yarden kernel: EIP: 0010:[rmqueue+507/576] Not tainted
Sep 27 02:25:12 yarden kernel: EIP: 0010:[<c012e81b>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Sep 27 02:25:12 yarden kernel: EFLAGS: 00010202
Sep 27 02:25:12 yarden kernel: eax: 00000040 ebx: c1221190 ecx: 00001000 edx: 0000c637
Sep 27 02:25:12 yarden kernel: esi: c0239470 edi: 0000ef00 ebp: c100001c esp: cbb75ec0
Sep 27 02:25:12 yarden kernel: ds: 0018 es: 0018 ss: 0018
Sep 27 02:25:12 yarden kernel: Process gzip (pid: 22541, stackpage=cbb75000)
Sep 27 02:25:12 yarden kernel: Stack: 00001000 0000b637 00000286 00000000 c0239470 c02395f4 000001ff 00000000
Sep 27 02:25:12 yarden kernel: 00000000 c012ea90 c0239470 c02395f0 000001d2 00000008 00000000 cfe77dbc
Sep 27 02:25:12 yarden kernel: 00000008 00000000 c012a286 cbb75f34 c681c000 00000000 00001000 fffffff4
Sep 27 02:25:12 yarden kernel: Call Trace: [__alloc_pages+64/368] [generic_file_write+1062/1824] [update_process_times+32/144] [process_timeout+0/80] [af_packet:__insmod_af_packet_O/lib/modules/2.4.20-pre5/kernel/net/pac+-83454/96]
Sep 27 02:25:12 yarden kernel: Call Trace: [<c012ea90>] [<c012a286>] [<c011f0c0>] [<c0115080>] [<d0834a02>]
Sep 27 02:25:12 yarden kernel: [<c01345f6>] [<c010893b>]
Sep 27 02:25:12 yarden kernel: Code: 0f 0b e7 00 7c df 20 c0 8b 43 18 a9 80 00 00 00 74 08 0f 0b
>>EIP; c012e81b <rmqueue+1fb/240> <=====
Trace; c012ea90 <__alloc_pages+40/170>
Trace; c012a286 <generic_file_write+426/720>
Trace; c011f0c0 <update_process_times+20/90>
Trace; c0115080 <process_timeout+0/50>
Trace; d0834a02 <[ext3]ext3_file_write+22/b0>
Trace; c01345f6 <sys_write+96/f0>
Trace; c010893b <system_call+33/38>
Code; c012e81b <rmqueue+1fb/240>
00000000 <_EIP>:
Code; c012e81b <rmqueue+1fb/240> <=====
0: 0f 0b ud2a <=====
Code; c012e81d <rmqueue+1fd/240>
2: e7 00 out %eax,$0x0
Code; c012e81f <rmqueue+1ff/240>
4: 7c df jl ffffffe5 <_EIP+0xffffffe5> c012e800 <rmqueue+1e0/240>
Code; c012e821 <rmqueue+201/240>
6: 20 c0 and %al,%al
Code; c012e823 <rmqueue+203/240>
8: 8b 43 18 mov 0x18(%ebx),%eax
Code; c012e826 <rmqueue+206/240>
b: a9 80 00 00 00 test $0x80,%eax
Code; c012e82b <rmqueue+20b/240>
10: 74 08 je 1a <_EIP+0x1a> c012e835 <rmqueue+215/240>
Code; c012e82d <rmqueue+20d/240>
12: 0f 0b ud2a
Sep 27 22:16:47 yarden kernel: kernel BUG at page_alloc.c:102!
Sep 27 22:16:47 yarden kernel: invalid operand: 0000
Sep 27 22:16:47 yarden kernel: CPU: 0
Sep 27 22:16:47 yarden kernel: EIP: 0010:[__free_pages_ok+73/656] Not tainted
Sep 27 22:16:47 yarden kernel: EIP: 0010:[<c012e3d9>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Sep 27 22:16:47 yarden kernel: EFLAGS: 00010286
Sep 27 22:16:47 yarden kernel: eax: c1000c40 ebx: c11cf018 ecx: c9cd27e4 edx: c02392d8
Sep 27 22:16:47 yarden kernel: esi: 00000000 edi: 00000000 ebp: 00000000 esp: cfea7f04
Sep 27 22:16:47 yarden kernel: ds: 0018 es: 0018 ss: 0018
Sep 27 22:16:47 yarden kernel: Process kswapd (pid: 5, stackpage=cfea7000)
Sep 27 22:16:47 yarden kernel: Stack: c0138128 cfe8b960 c11cf018 000001d0 c013651f 000001d0 c11cf018 000001d0
Sep 27 22:16:47 yarden kernel: c11cf018 00000001 000009ea c012dc9e 00000202 cfea6000 000000fd 000001d0
Sep 27 22:16:47 yarden kernel: c0239470 c12c30c0 c4b416c0 c12c3564 00000002 00000020 000001d0 00000006
Sep 27 22:16:47 yarden kernel: Call Trace: [try_to_free_buffers+152/240] [try_to_release_page+47/80] [shrink_cache+558/768] [shrink_caches+82/144] [try_to_free_pages+60/96]
Sep 27 22:16:47 yarden kernel: Call Trace: [<c0138128>] [<c013651f>] [<c012dc9e>] [<c012deb2>] [<c012df2c>]
Sep 27 22:16:47 yarden kernel: [<c012dfd1>] [<c012e046>] [<c012e181>] [<c012e0e0>] [<c0105000>] [<c0107186>]
Sep 27 22:16:47 yarden kernel: [<c012e0e0>]
Sep 27 22:16:47 yarden kernel: Code: 0f 0b 66 00 7c df 20 c0 8b 15 f0 45 29 c0 89 d8 29 d0 69 c0
>>EIP; c012e3d9 <__free_pages_ok+49/290> <=====
Trace; c0138128 <try_to_free_buffers+98/f0>
Trace; c013651f <try_to_release_page+2f/50>
Trace; c012dc9e <shrink_cache+22e/300>
Trace; c012deb2 <shrink_caches+52/90>
Trace; c012df2c <try_to_free_pages+3c/60>
Trace; c012dfd1 <kswapd_balance_pgdat+51/a0>
Trace; c012e046 <kswapd_balance+26/40>
Trace; c012e181 <kswapd+a1/c0>
Trace; c012e0e0 <kswapd+0/c0>
Trace; c0105000 <_stext+0/0>
Trace; c0107186 <kernel_thread+26/30>
Trace; c012e0e0 <kswapd+0/c0>
Code; c012e3d9 <__free_pages_ok+49/290>
00000000 <_EIP>:
Code; c012e3d9 <__free_pages_ok+49/290> <=====
0: 0f 0b ud2a <=====
Code; c012e3db <__free_pages_ok+4b/290>
2: 66 data16
Code; c012e3dc <__free_pages_ok+4c/290>
3: 00 7c df 20 add %bh,0x20(%edi,%ebx,8)
Code; c012e3e0 <__free_pages_ok+50/290>
7: c0 8b 15 f0 45 29 c0 rorb $0xc0,0x2945f015(%ebx)
Code; c012e3e7 <__free_pages_ok+57/290>
e: 89 d8 mov %ebx,%eax
Code; c012e3e9 <__free_pages_ok+59/290>
10: 29 d0 sub %edx,%eax
Code; c012e3eb <__free_pages_ok+5b/290>
12: 69 c0 00 00 00 00 imul $0x0,%eax,%eax
Software:
Linux yarden.gadot.org.il 2.4.20-pre5 #1 ב' ספט 9 01:50:30 IDT 2002 i686 unknown
Gnu C 2.96
Gnu make 3.79.1
binutils 2.11.90.0.8
util-linux 2.11h
mount 2.11h
modutils 2.4.11
e2fsprogs 1.24a
PPP 2.4.1
Linux C Library 2.2.4
Dynamic linker (ldd) 2.2.4
Procps 2.0.7
Net-tools 1.60
Console-tools 0.2.3
Sh-utils 2.0.11
Modules Loaded af_packet ne2k-pci 8390 ext3 jbd rtc
CPU:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 6
model name : Celeron (Mendocino)
stepping : 5
cpu MHz : 467.739
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr
bogomips : 933.88
PCI Bus:
00:00.0 Host bridge: Intel Corporation 82810-DC100 GMCH [Graphics Memory Controller Hub] (rev 03)
Subsystem: Intel Corporation 82810-DC100 GMCH [Graphics Memory Controller Hub]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
Latency: 0
00:01.0 VGA compatible controller: Intel Corporation 82810-DC100 CGC [Chipset Graphics Controller] (rev 03) (prog-if 00 [VGA])
Subsystem: Intel Corporation 82810-DC100 CGC [Chipset Graphics Controller]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: Memory at d8000000 (32-bit, prefetchable) [size=64M]
Region 1: Memory at dc000000 (32-bit, non-prefetchable) [size=512K]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:1e.0 PCI bridge: Intel Corporation 82801AA PCI Bridge (rev 02) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000c000-0000cfff
Memory behind bridge: fff00000-000fffff
Prefetchable memory behind bridge: fff00000-000fffff
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
00:1f.0 ISA bridge: Intel Corporation 82801AA ISA Bridge (LPC) (rev 02)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
00:1f.1 IDE interface: Intel Corporation 82801AA IDE (rev 02) (prog-if 80 [Master])
Subsystem: Intel Corporation 82801AA IDE
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Region 4: I/O ports at f000 [size=16]
00:1f.2 USB Controller: Intel Corporation 82801AA USB (rev 02) (prog-if 00 [UHCI])
Subsystem: Intel Corporation 82801AA USB
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin D routed to IRQ 12
Region 4: I/O ports at d000 [size=32]
01:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8029(AS)
Subsystem: Realtek Semiconductor Co., Ltd. RT8029(AS)
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c000 [size=32]
(No SCSI)
-- Tzafrir Cohen mailto:tzafrir@technion.ac.il http://www.technion.ac.il/~tzafrir
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