hi,
i got some oops last time.
it happens with kernel 2.2.14. suse linux 6.4
my config :
supermicro p6dgs board w/ adaptec-dual-uw-scsi, 1 proc. installed, pIII/600
coppermine
2x intel etherexpress 100
3 x ibm uw-hd 9 gb
im running raid5, reiserfs.
it happens when the machine has to handle lots of data (copying, backup etc..)
it also happens with raid, reiser etc. removed from the kernel, only copying a
cd to hd (ext2-fs to be sure its not reiser making trouble....)
here are two outputs.....
first :
Reading Oops report from the terminal
Apr 19 02:21:28 mustang kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000
Apr 19 02:21:28 mustang kernel: current->tss.cr3 = 00101000, %cr3 = 00101000
Apr 19 02:21:28 mustang kernel: *pde = 00000000
Apr 19 02:21:28 mustang kernel: Oops: 0002
Apr 19 02:21:28 mustang kernel: CPU: 0
Apr 19 02:21:28 mustang kernel: EIP: 0010:[kmem_cache_free+148/360]
Apr 19 02:21:28 mustang kernel: EFLAGS: 00010286
Apr 19 02:21:28 mustang kernel: eax: 0000003d ebx: c691eec0 ecx: ffffffff edx: 0000003c
Apr 19 02:21:28 mustang kernel: esi: cffff740 edi: 00000286 ebp: c0348028 esp: cffe3ecc
Apr 19 02:21:28 mustang kernel: ds: 0018 es: 0018 ss: 0018
Apr 19 02:21:28 mustang kernel: Process kswapd (pid: 5, process nr: 5, stackpage=cffe3000)
Apr 19 02:21:29 mustang kernel: Stack: c691eec0 c0348028 0000000e 00000030 cffe3f38 00000001 c028b6e0 c028b6c4
Apr 19 02:21:29 mustang kernel: c010a072 c012736e cffff740 c691eec0 cffff920 00000013 c691eec0 c0342060
Apr 19 02:21:29 mustang kernel: c010a098 00000206 c691eec0 c691eec0 c4494480 c012812d c691eec0 c4494480
Apr 19 02:21:29 mustang kernel: Call Trace: [do_8259A_IRQ+94/156] [breada+270/404] [do_8259A_IRQ+132/156] [grow_buffers+169/248] [grow_buffers+160/248] [grow_buffers+217/248] [shrink_mmap+53/312]
Apr 19 02:21:29 mustang kernel: [cdrom_ioctl+550/3404] [schedule+166/632] [swap_out+61/184] [cdrom_ioctl+550/3404] [cdrom_ioctl+550/3404] [do_try_to_free_pages+82/148] [do_try_to_free_pages+58/148] [kernel_thread+31/56]
Apr 19 02:21:29 mustang kernel: [kernel_thread+40/56]
Apr 19 02:21:29 mustang kernel: Code: c7 05 00 00 00 00 00 00 00 00 eb 12 83 c4 fc 56 53 68 be 35
Apr 19 02:21:28 mustang kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000
Apr 19 02:21:28 mustang kernel: current->tss.cr3 = 00101000, %cr3 = 00101000
Apr 19 02:21:28 mustang kernel: *pde = 00000000
Apr 19 02:21:28 mustang kernel: Oops: 0002
Apr 19 02:21:28 mustang kernel: CPU: 0
Apr 19 02:21:28 mustang kernel: EIP: 0010:[kmem_cache_free+148/360]
Apr 19 02:21:28 mustang kernel: EFLAGS: 00010286
Apr 19 02:21:28 mustang kernel: eax: 0000003d ebx: c691eec0 ecx: ffffffff edx: 0000003c
Apr 19 02:21:28 mustang kernel: esi: cffff740 edi: 00000286 ebp: c0348028 esp: cffe3ecc
Apr 19 02:21:28 mustang kernel: ds: 0018 es: 0018 ss: 0018
Apr 19 02:21:28 mustang kernel: Process kswapd (pid: 5, process nr: 5, stackpage=cffe3000)
Apr 19 02:21:29 mustang kernel: Stack: c691eec0 c0348028 0000000e 00000030 cffe3f38 00000001 c028b6e0 c028b6c4
Apr 19 02:21:29 mustang kernel: c010a072 c012736e cffff740 c691eec0 cffff920 00000013 c691eec0 c0342060
Apr 19 02:21:29 mustang kernel: c010a098 00000206 c691eec0 c691eec0 c4494480 c012812d c691eec0 c4494480
Apr 19 02:21:29 mustang kernel: Call Trace: [do_8259A_IRQ+94/156] [breada+270/404] [do_8259A_IRQ+132/156] [grow_buffers+169/248] [grow_buffers+160/248] [grow_buffers+217/248] [shrink_mmap+53/312]
Apr 19 02:21:29 mustang kernel: Code: c7 05 00 00 00 00 00 00 00 00 eb 12 83 c4 fc 56 53 68 be 35
Using defaults from ksymoops -t elf32-i386 -a i386
Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: c7 05 00 00 00 00 00 movl $0x0,0x0
Code; 00000007 Before first symbol
7: 00 00 00
Code; 0000000a Before first symbol
a: eb 12 jmp 1e <_EIP+0x1e> 0000001e Before first symbol
Code; 0000000c Before first symbol
c: 83 c4 fc add $0xfffffffc,%esp
Code; 0000000f Before first symbol
f: 56 push %esi
Code; 00000010 Before first symbol
10: 53 push %ebx
Code; 00000011 Before first symbol
11: 68 be 35 00 00 push $0x35be
and here the second
Apr 28 13:33:55 mustang kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000014
Apr 28 13:33:55 mustang kernel: current->tss.cr3 = 00101000, %cr3 = 00101000
Apr 28 13:33:55 mustang kernel: *pde = 00000000
Apr 28 13:33:55 mustang kernel: Oops: 0000
Apr 28 13:33:55 mustang kernel: CPU: 0
Apr 28 13:33:55 mustang kernel: EIP: 0010:[add_vfsmnt+182/348]
Apr 28 13:33:55 mustang kernel: EFLAGS: 00010207
Apr 28 13:33:55 mustang kernel: eax: 00000000 ebx: c0394cc8 ecx: c0263c00 edx: 00000000
Apr 28 13:33:55 mustang kernel: esi: 00000000 edi: ca572860 ebp: c0394cc8 esp: cdfe3f4c
Apr 28 13:33:55 mustang kernel: ds: 0018 es: 0018 ss: 0018
Apr 28 13:33:55 mustang kernel: Process kswapd (pid: 5, process nr: 5, stackpage=cdfe3000)
Apr 28 13:33:55 mustang kernel: Stack: 00000030 00001000 cdfff320 c6212220 00730018 c011dbc5 c0394cc8 c01fc6ee
Apr 28 13:33:55 mustang kernel: 00000030 00001000 00000019 00000005 c0263be4 00000000 c0110fbe cdfe3fac
Apr 28 13:33:Apr 28 13:33:55 mustang kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000014
55 mustang kernel: Apr 28 13:33:55 mustang kernel: current->tss.cr3 = 00101000, %cr3 = 00101000
Apr 28 13:33:55 mustang kernel: *pde = 00000000
Apr 28 13:33:55 mustang kernel: Oops: 0000
Apr 28 13:33:55 mustang kernel: CPU: 0
Apr 28 13:33:55 mustang kernel: EIP: 0010:[add_vfsmnt+182/348]
Apr 28 13:33:55 mustang kernel: EFLAGS: 00010207
Apr 28 13:33:55 mustang kernel: eax: 00000000 ebx: c0394cc8 ecx: c0263c00 edx: 00000000
Apr 28 13:33:55 mustang kernel: esi: 00000000 edi: ca572860 ebp: c0394cc8 esp: cdfe3f4c
Apr 28 13:33:55 mustang kernel: ds: 0018 es: 0018 ss: 0018
Apr 28 13:33:55 mustang kernel: Process kswapd (pid: 5, process nr: 5, stackpage=cdfe3000)
Apr 28 13:33:55 mustang kernel: Stack: 00000030 00001000 cdfff320 c6212220 00730018 c011dbc5 c0394cc8 c01fc6ee
Apr 28 13:33:55 mustang kernel: 00000030 00001000 00000019 00000005 c0263be4 00000000 c0110fbe cdfe3fac
00000036 c01229d3 00000005 00000030 cdfe21c1 cdfe8000 cdfe2000 c01fc6ee
Apr 28 13:33:56 mustang kernel: Call Trace: [filemap_nopage+301/792] [handle_kbd_event+210/316] [second_overflow+42/576] [swap_in+359/368] [handle_kbd_event+210/316]
[handle_kbd_event+210/316] [add_to_swap_cache+149/296]
Apr 28 13:33:56 mustang kernel: [add_to_swap_cache+126/296] [copy_segments+19/152] [copy_segments+28/152]
Apr 28 13:33:56 mustang kernel: Code: 8b 76 14 83 78 20 00 75 06 f6 40 18 46 74 1f 8b 47 18 a8 02 Apr 28 13:33:55 mustang kernel: 00000036 c01229d3 00000005
00000030 cdfe21c1 cdfe8000 cdfe2000 c01fc6ee
Apr 28 13:33:56 mustang kernel: Call Trace: [filemap_nopage+301/792] [handle_kbd_event+210/316] [second_overflow+42/576] [swap_in+359/368] [handle_kbd_event+210/316]
[handle_kbd_event+210/316] [add_to_swap_cache+149/296]
Apr 28 13:33:56 mustang kernel: Code: 8b 76 14 83 78 20 00 75 06 f6 40 18 46 74 1f 8b 47 18 a8 02
Using defaults from ksymoops -t elf32-i386 -a i386
Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 8b 76 14 mov 0x14(%esi),%esi
Code; 00000003 Before first symbol
3: 83 78 20 00 cmpl $0x0,0x20(%eax)
Code; 00000007 Before first symbol
7: 75 06 jne f <_EIP+0xf> 0000000f Before first symbol
Code; 00000009 Before first symbol
9: f6 40 18 46 testb $0x46,0x18(%eax)
Code; 0000000d Before first symbol
d: 74 1f je 2e <_EIP+0x2e> 0000002e Before first symbol
Code; 0000000f Before first symbol
f: 8b 47 18 mov 0x18(%edi),%eax
Code; 00000012 Before first symbol
12: a8 02 test $0x2,%al
sometimes the machine crashes completely, sometimes its still accessible..
one other interresting thing is /proc/meminfo :
mustang:~ # cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 230633472 225800192 4833280 306806784 61325312 112611328
Swap: 106889216 0 106889216
MemTotal: 225228 kB
MemFree: 4720 kB
MemShared: 299616 kB
Buffers: 59888 kB
Cached: 109972 kB
BigTotal: 0 kB
BigFree: 0 kB
SwapTotal: 104384 kB
SwapFree: 104384 kB
i boot with mem=224 option, look at the shared-info above !
how can i have more shared mem then available ??
thanks a lot in advance,
chris
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