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From: "sanket rathi" <sanket@linuxmail.org>
To: arjanv@redhat.com
Cc: linux-kernel@vger.kernel.org
Date: Wed, 27 Nov 2002 18:45:58 +0800
Subject: kernel bug
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I think i haven't sent the kernel message in my previous mails I am sorry now i am sending that


> On Wed, 2002-11-27 at 10:50, sanket rathi wrote:
> > Hi, 
> > I am a writing a device driver. I have written a pci based driver for kernel 2.2.14-5.0 
> > and that is working fine and now i have ported that to (with minimal changes) kernel 
> > 2.4.18-14 now also it is working. in that i have to reserve memory in kernel (i send user 
> > buffer address and lock (reserve) thart memory in kernel). but whenevr i start any other 
> > appication simultaneously then i got some kernel messages like following  
> 
> It appears that you forgot to attach your code or to put in an URL to
> it; how can anyone try to help you without it ?
> 

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Nov 27 14:36:11 saturn kernel: ------------[ cut here ]------------
Nov 27 14:36:11 saturn kernel: kernel BUG at rmap.c:267!
Nov 27 14:36:11 saturn kernel: invalid operand: 0000
Nov 27 14:36:11 saturn kernel: cs46xx ac97_codec soundcore ccp3k autofs 3c59x iptable_filter ip_tables moused
Nov 27 14:36:11 saturn kernel: CPU:    0
Nov 27 14:36:11 saturn kernel: EIP:    0010:[<c013d197>]    Not tainted
Nov 27 14:36:11 saturn kernel: EFLAGS: 00010206
Nov 27 14:36:11 saturn kernel: 
Nov 27 14:36:11 saturn kernel: EIP is at try_to_unmap [kernel] 0x47 (2.4.18-14)
Nov 27 14:36:11 saturn kernel: eax: 00024099   ebx: c100bd84   ecx: c100bd68   edx: c1000030
Nov 27 14:36:11 saturn kernel: esi: c100bd68   edi: 000001db   ebp: 00000000   esp: cb00ddf8
Nov 27 14:36:11 saturn kernel: ds: 0018   es: 0018   ss: 0018
Nov 27 14:36:11 saturn kernel: Process gnuchess (pid: 2869, stackpage=cb00d000)
Nov 27 14:36:11 saturn kernel: Stack: 00000029 00002900 c100bd68 c0138617 c0305380 00000000 c100bd84 c100bd14 
Nov 27 14:36:11 saturn kernel:        000001db c100bd68 c0136429 c100bd68 00000003 c03053cc 000002a0 000002a0 
Nov 27 14:36:11 saturn kernel:        00000000 c0305380 00000000 000001d2 00000000 c0136658 c0305380 000001d2 
Nov 27 14:36:11 saturn kernel: Call Trace: [<c0138617>] add_to_swap [kernel] 0x67 (0xcb00de04))
Nov 27 14:36:11 saturn kernel: [<c0136429>] page_launder_zone [kernel] 0x419 (0xcb00de20))
Nov 27 14:36:11 saturn kernel: [<c0136658>] page_launder [kernel] 0x68 (0xcb00de4c))
Nov 27 14:36:11 saturn kernel: [<c0136a11>] do_try_to_free_pages [kernel] 0x11 (0xcb00de68))
Nov 27 14:36:11 saturn kernel: [<c0136f29>] try_to_free_pages [kernel] 0x59 (0xcb00de7c))
Nov 27 14:36:11 saturn kernel: [<c0137d1c>] __alloc_pages [kernel] 0x16c (0xcb00de8c))
Nov 27 14:36:11 saturn kernel: [<c0130018>] common_sendfile [kernel] 0xb8 (0xcb00dea4))
Nov 27 14:36:11 saturn kernel: [<c012bb99>] do_anonymous_page [kernel] 0x59 (0xcb00dec0))
Nov 27 14:36:11 saturn kernel: [<c012bee9>] handle_mm_fault [kernel] 0x89 (0xcb00dee0))
Nov 27 14:36:11 saturn kernel: [<c01169f8>] do_page_fault [kernel] 0x138 (0xcb00df0c))
Nov 27 14:36:11 saturn kernel: [<c014ebcd>] __kill_fasync [kernel] 0x4d (0xcb00df34))
Nov 27 14:36:11 saturn kernel: [<c019576d>] handle_kbd_event [kernel] 0x3d (0xcb00df64))
Nov 27 14:36:12 saturn kernel: [<c01957ff>] keyboard_interrupt [kernel] 0xf (0xcb00df7c))
Nov 27 14:36:12 saturn kernel: [<c010a685>] handle_IRQ_event [kernel] 0x45 (0xcb00df80))
Nov 27 14:36:12 saturn kernel: [<c0117ce5>] schedule [kernel] 0x175 (0xcb00df90))
Nov 27 14:36:12 saturn kernel: [<c01168c0>] do_page_fault [kernel] 0x0 (0xcb00dfb0))
Nov 27 14:36:12 saturn kernel: [<c0109200>] error_code [kernel] 0x34 (0xcb00dfb8))
Nov 27 14:36:12 saturn kernel: 
Nov 27 14:36:12 saturn kernel: 
Nov 27 14:36:12 saturn kernel: Code: 0f 0b 0b 01 27 9a 25 c0 8b 46 18 83 e0 01 75 08 0f 0b 0d 01 



Once I got the follwing oops and when i debug with ksymoops then i got the following result

ksymoops 2.4.5 on i686 2.4.18-14.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.18-14/misc/ccp3k.o (specified)
     -m /boot/System.map-2.4.18-14 (default)

Error (expand_objects): cannot stat(/lib/ext3.o) for ext3
Error (expand_objects): cannot stat(/lib/jbd.o) for jbd
Error (expand_objects): cannot stat(/lib/aic7xxx.o) for aic7xxx
Error (expand_objects): cannot stat(/lib/sd_mod.o) for sd_mod
Error (expand_objects): cannot stat(/lib/scsi_mod.o) for scsi_mod
Warning (map_ksym_to_module): cannot match loaded module ext3 to a unique module object.  Trace may not be reliable.
Warning (map_ksym_to_module): cannot match loaded module jbd to a unique module object.  Trace may not be reliable.
Warning (map_ksym_to_module): cannot match loaded module aic7xxx to a unique module object.  Trace may not be reliable.
Warning (map_ksym_to_module): cannot match loaded module sd_mod to a unique module object.  Trace may not be reliable.
Warning (map_ksym_to_module): cannot match loaded module scsi_mod to a unique module object.  Trace may not be reliable.
Nov 27 13:41:06 saturn kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000070
Nov 27 13:41:06 saturn kernel: c013d269
Nov 27 13:41:06 saturn kernel: *pde = 00000000
Nov 27 13:41:06 saturn kernel: Oops: 0000
Nov 27 13:41:06 saturn kernel: CPU:    0
Nov 27 13:41:06 saturn kernel: EIP:    0010:[<c013d269>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Nov 27 13:41:06 saturn kernel: EFLAGS: 00010212
Nov 27 13:41:06 saturn kernel: eax: 00033919   ebx: c1000030   ecx: c03609f8   edx: 00000000
Nov 27 13:41:06 saturn kernel: esi: c1012748   edi: 00000022   ebp: c0305380   esp: c138ffa4
Nov 27 13:41:06 saturn kernel: ds: 0018   es: 0018   ss: 0018
Nov 27 13:41:06 saturn kernel: Process kswapd (pid: 5, stackpage=c138f000)
Nov 27 13:41:06 saturn kernel: Stack: c1012764 c0136841 c0305380 00000002 c03053c4 c138e000 00000000 000002c3 
Nov 27 13:41:06 saturn kernel:        c138e000 c0305380 c138e245 0008e000 c0136c94 c0305380 00000006 c1b00018 
Nov 27 13:41:06 saturn kernel:        00010f00 c1b07fb8 c0105000 c010744e 00000000 c0136b60 00000000 
Nov 27 13:41:06 saturn kernel: Call Trace: [<c0136841>] refill_inactive_zone [kernel] 0x141 (0xc138ffa8))
Nov 27 13:41:06 saturn kernel: [<c0136c94>] kswapd [kernel] 0x134 (0xc138ffd4))
Nov 27 13:41:06 saturn kernel: [<c0105000>] stext [kernel] 0x0 (0xc138ffec))
Nov 27 13:41:06 saturn kernel: [<c010744e>] kernel_thread [kernel] 0x2e (0xc138fff0))
Nov 27 13:41:06 saturn kernel: [<c0136b60>] kswapd [kernel] 0x0 (0xc138fff8))
Nov 27 13:41:06 saturn kernel: Code: 8b 42 70 85 c0 74 12 39 42 5c 76 0d 8b 09 85 c9 75 d5 b8 01 


>>EIP; c013d269 <page_over_rsslimit+29/50>   <=====

>>eax; 00033919 Before first symbol
>>ebx; c1000030 <_end+c2e4b0/104564e0>
>>ecx; c03609f8 <isapnp_setup_reserve_irq+18/40>
>>esi; c1012748 <_end+c40bc8/104564e0>
>>ebp; c0305380 <contig_page_data+0/440>
>>esp; c138ffa4 <_end+fbe424/104564e0>

Trace; c0136841 <refill_inactive_zone+141/1f0>
Trace; c0136c94 <kswapd+134/190>
Trace; c0105000 <_stext+0/0>
Trace; c010744e <kernel_thread+2e/40>
Trace; c0136b60 <kswapd+0/190>

Code;  c013d269 <page_over_rsslimit+29/50>
00000000 <_EIP>:
Code;  c013d269 <page_over_rsslimit+29/50>   <=====
   0:   8b 42 70                  mov    0x70(%edx),%eax   <=====
Code;  c013d26c <page_over_rsslimit+2c/50>
   3:   85 c0                     test   %eax,%eax
Code;  c013d26e <page_over_rsslimit+2e/50>
   5:   74 12                     je     19 <_EIP+0x19>
Code;  c013d270 <page_over_rsslimit+30/50>
   7:   39 42 5c                  cmp    %eax,0x5c(%edx)
Code;  c013d273 <page_over_rsslimit+33/50>
   a:   76 0d                     jbe    19 <_EIP+0x19>
Code;  c013d275 <page_over_rsslimit+35/50>
   c:   8b 09                     mov    (%ecx),%ecx
Code;  c013d277 <page_over_rsslimit+37/50>
   e:   85 c9                     test   %ecx,%ecx
Code;  c013d279 <page_over_rsslimit+39/50>
  10:   75 d5                     jne    ffffffe7 <_EIP+0xffffffe7>
Code;  c013d27b <page_over_rsslimit+3b/50>
  12:   b8 01 00 00 00            mov    $0x1,%eax








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