kernel bug

sanket rathi (sanket@linuxmail.org)
Wed, 27 Nov 2002 17:50:57 +0800

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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

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

The above message i got maximum time

but one time i got oops so i run ksymoops and that has given me 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

Can anybody knows something about it

Thanks in advance

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Next message: John Bradford: "Re: A Kernel Configuration Tale of Woe"
Previous message: Joshua Kwan: "Re: [OOPS] 2.4.20-rc4-ac1 (also occurs 2.4.20-rc2-ac3) in radeon DRI for XFree86"