机器放久了，会出现oops出错死机问题。
Unable to handle kernel NULL pointer dereference at virtual address 00000004
pgd = c0004000
[00000004] *pgd=00000000
Internal error: Oops: 817 [#1]
last sysfs file: /sys/devices/w1 bus master/01-000000000000/bq27000-battery.1/power_supply/vpos3xx-bat/health
Modules linked in: wl12xx mac80211 cfg80211 compat omaplfb pvrsrvkm module_com_drv tca6416_key print_ss205 picc_drv magcard icc_driver
buzzer TCD50_TCS misc xr20_uart
CPU: 0 Not tainted (2.6.37-00099-g59e3cbe-dirty #478)
PC is at unlink_anon_vmas+0x40/0xac
LR is at unlink_anon_vmas+0x88/0xac
pc : [<c00f59e4>] lr : [<c00f5a2c>] psr: a0000013
sp : c6f55e78 ip : c6f55e78 fp : c6f55e9c
r10: c07553b0 r9 : c6f66910 r8 : 00100100
r7 : 00200200 r6 : c6f65948 r5 : c6f65788 r4 : c6f65788
r3 : c051056c r2 : 00000000 r1 : ceaf212c r0 : ceaf2128
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 83928019 DAC: 00000015
PC: 0xc00f5964:
5964 ebff7c24 ea000000 e3a05000 e1a00005 e24bd028 e89daff0 c061cd69 e1a0c00d
5984 e92dd800 e24cb004 e59f300c e1a01000 e5930000 eb0023f6 e89da800 c07553b0
59a4 e1a0c00d e92dddf0 e24cb004 e1a06000 e59f8088 e59f7088 e5b64038 e59fa084
59c4 e4145008 ea000018 e5940004 e3500000 e2801004 0a000009 e5943014 e5942010
59e4 e5823004 e5832000 e5848010 e5847014 e5903004 e1530001 1a000000 ebffffde
5a04 e594300c e1a01004 e5942008 e5823004 e5832000 e5848008 e584700c e1a04005
5a24 e59a0004 eb0023d2 e5955008 e2843008 e2455008 e1560003 1affffe2 e89dadf0
5a44 00100100 00200200 c07553b0 e1a0c00d e92dddf0 e24cb004 e59f6098 e1a04000
LR: 0xc00f59ac:
59ac e24cb004 e1a06000 e59f8088 e59f7088 e5b64038 e59fa084 e4145008 ea000018
59cc e5940004 e3500000 e2801004 0a000009 e5943014 e5942010 e5823004 e5832000
59ec e5848010 e5847014 e5903004 e1530001 1a000000 ebffffde e594300c e1a01004
5a0c e5942008 e5823004 e5832000 e5848008 e584700c e1a04005 e59a0004 eb0023d2
5a2c e5955008 e2843008 e2455008 e1560003 1affffe2 e89dadf0 00100100 00200200
5a4c c07553b0 e1a0c00d e92dddf0 e24cb004 e59f6098 e1a04000 e2818038 e2807038
5a6c e591503c ea000014 e5960004 eb00264a e3500000 e2802008 e2801010 0a000017
5a8c e5953004 e5804000 e283c004 e5803004 e594a038 e58a2004 e580a008 e580700c
SP: 0xc6f55df8:
5df8 c6f55e24 c6f55e08 c00d9994 c00d7d4c 00000000 c0876da0 ffffffff c6f55e64
5e18 c6f65948 00200200 c6f55e9c c6f55e30 c04f406c c003f274 ceaf2128 ceaf212c
5e38 00000000 c051056c c6f65788 c6f65788 c6f65948 00200200 00100100 c6f66910
5e58 c07553b0 c6f55e9c c6f55e78 c6f55e78 c00f5a2c c00f59e4 a0000013 ffffffff
5e78 c6f65910 00001000 c06b48f0 00000000 c6f65758 00008000 c6f55ed4 c6f55ea0
5e98 c00ef5e8 c00f59b0 ffffffff 00000000 c004aa28 c6f17c80 c6f65758 000412a9
5eb8 00000000 00041364 00000000 00000000 c6f55f14 c6f55ed8 c00f1290 c00ef5ac
5ed8 c6f55ee0 00000000 000000bb c06b48f0 c6f17c80 c6f17c80 00000000 00000000
IP: 0xc6f55df8:
5df8 c6f55e24 c6f55e08 c00d9994 c00d7d4c 00000000 c0876da0 ffffffff c6f55e64
5e18 c6f65948 00200200 c6f55e9c c6f55e30 c04f406c c003f274 ceaf2128 ceaf212c
5e38 00000000 c051056c c6f65788 c6f65788 c6f65948 00200200 00100100 c6f66910
5e58 c07553b0 c6f55e9c c6f55e78 c6f55e78 c00f5a2c c00f59e4 a0000013 ffffffff
5e78 c6f65910 00001000 c06b48f0 00000000 c6f65758 00008000 c6f55ed4 c6f55ea0
5e98 c00ef5e8 c00f59b0 ffffffff 00000000 c004aa28 c6f17c80 c6f65758 000412a9
5eb8 00000000 00041364 00000000 00000000 c6f55f14 c6f55ed8 c00f1290 c00ef5ac
5ed8 c6f55ee0 00000000 000000bb c06b48f0 c6f17c80 c6f17c80 00000000 00000000
FP: 0xc6f55e1c:
5e1c 00200200 c6f55e9c c6f55e30 c04f406c c003f274 ceaf2128 ceaf212c 00000000
5e3c c051056c c6f65788 c6f65788 c6f65948 00200200 00100100 c6f66910 c07553b0
5e5c c6f55e9c c6f55e78 c6f55e78 c00f5a2c c00f59e4 a0000013 ffffffff c6f65910
5e7c 00001000 c06b48f0 00000000 c6f65758 00008000 c6f55ed4 c6f55ea0 c00ef5e8
5e9c c00f59b0 ffffffff 00000000 c004aa28 c6f17c80 c6f65758 000412a9 00000000
5ebc 00041364 00000000 00000000 c6f55f14 c6f55ed8 c00f1290 c00ef5ac c6f55ee0
5edc 00000000 000000bb c06b48f0 c6f17c80 c6f17c80 00000000 00000000 c6f17cb4
5efc c004aa28 c6f54000 00000001 c6f55f2c c6f55f18 c0078d6c c00f1168 c6f17c80
R0: 0xceaf20a8:
20a8 00000024 00000025 00000026 00000001 0000002b 00000029 ffffffff 00000027
20c8 00000005 00000000 ce8a5380 ad389000 ad38a000 ceb0b5f8 ceb0bf40 0000010f
20e8 00100073 00000001 cea61dfc ceb0beac 00000000 00000000 00000000 00000000
2108 ceaf2108 ceaf2108 00000000 00000000 000ad389 00000000 00000000 00000000
2128 c6f17500 00008000 0001b000 c894a2e0 00000000 0000030f 08001875 c894a2fd
2148 00000000 00000000 ceaf2150 ceaf2150 c894a308 00000000 ceaf2160 ceaf2160
2168 00000000 c051056c 00000000 ca110ec0 00000000 00000000 c6f17c80 afd40000
2188 afd43000 c6f65de0 c6f653e8 0000010f 08100073 c6f65405 c6f65dfc 00000000
R1: 0xceaf20ac:
20ac 00000025 00000026 00000001 0000002b 00000029 ffffffff 00000027 00000005
20cc 00000000 ce8a5380 ad389000 ad38a000 ceb0b5f8 ceb0bf40 0000010f 00100073
20ec 00000001 cea61dfc ceb0beac 00000000 00000000 00000000 00000000 ceaf2108
210c ceaf2108 00000000 00000000 000ad389 00000000 00000000 00000000 c6f17500
212c 00008000 0001b000 c894a2e0 00000000 0000030f 08001875 c894a2fd 00000000
214c 00000000 ceaf2150 ceaf2150 c894a308 00000000 ceaf2160 ceaf2160 00000000
216c c051056c 00000000 ca110ec0 00000000 00000000 c6f17c80 afd40000 afd43000
218c c6f65de0 c6f653e8 0000010f 08100073 c6f65405 c6f65dfc 00000000 cea08d00
R3: 0xc05104ec:
04ec 75735f32 72775f6d 5f657469 61746164 00000000 7366666a 75735f32 72705f6d
050c 7365636f 75735f73 61645f6d 00006174 7366666a 75735f32 63735f6d 735f6e61
052c 6f6e6d75 00006564 7366666a 75735f32 64615f6d 766b5f64 00006365 7366666a
054c 75735f32 6e695f6d 00007469 656b616d 7365725f 61767265 6e6f6974 00000000
056c 00000000 00000000 c00d5088 c01d3f98 00000000 66696275 6d765f73 6761705f
058c 6b6d5f65 74697277 00000065 75706f70 6574616c 6761705f 00000065 64616572
05ac 6f6c625f 00006b63 725f6f64 70646165 00656761 66696275 6f645f73 6c75625f
05cc 65725f6b 00006461 775f6f64 65746972 65676170 00000000 c01d5538 c01d4fb8
R4: 0xc6f65708:
5708 b0013000 c3965230 c6f65288 0000010f 00100073 c6f65c9d c396524c c6f652a4
5728 00000000 00000000 00000000 00000000 c39bcf70 c39bcf70 c6f6a5c8 00000000
5748 000b000a 00000000 00000000 00000000 c6f17c80 00008000 0001b000 c6f65910
5768 00000000 0000030f 08001875 c6f6592d 00000000 00000000 c6f65780 c6f65780
5788 00000000 ceaf2128 c6f65790 c6f65790 00000000 c051056c 00000000 ca134f40
57a8 00000000 00000000 c8325840 b0009000 b000a000 c6f65338 c39655f8 0000010f
57c8 08100873 c6f65355 00000000 00000000 c39650f8 c6f66360 00000000 00000000
57e8 c39bcb08 c39bcb08 c6f6a468 c051056c 00000009 ceaf3c40 00000000 00000000
R5: 0xc6f65708:
5708 b0013000 c3965230 c6f65288 0000010f 00100073 c6f65c9d c396524c c6f652a4
5728 00000000 00000000 00000000 00000000 c39bcf70 c39bcf70 c6f6a5c8 00000000
5748 000b000a 00000000 00000000 00000000 c6f17c80 00008000 0001b000 c6f65910
5768 00000000 0000030f 08001875 c6f6592d 00000000 00000000 c6f65780 c6f65780
5788 00000000 ceaf2128 c6f65790 c6f65790 00000000 c051056c 00000000 ca134f40
57a8 00000000 00000000 c8325840 b0009000 b000a000 c6f65338 c39655f8 0000010f
57c8 08100873 c6f65355 00000000 00000000 c39650f8 c6f66360 00000000 00000000
57e8 c39bcb08 c39bcb08 c6f6a468 c051056c 00000009 ceaf3c40 00000000 00000000
R6: 0xc6f658c8:
58c8 c6f66650 0000010f 00100071 c6f65a34 00000000 00000000 00000000 00000000
58e8 00000000 00000000 c39bc610 c39bc610 c6f6a948 00000000 0004002b 00000000
5908 00000000 00000000 c6f17c80 0001b000 0001c000 c6f66910 c6f65758 0000010f
5928 08101873 c39652a4 c6f6692c c6f65774 c6f65938 c6f65938 00000000 c894a2e0
5948 c39bc4d8 c39bc4d8 c6f6a8b8 c051056c 00000013 ca134f40 00000000 00000000
5968 c6f17980 00008000 00009000 c6f65ee8 00000000 0000030f 08001875 c6f65f05
5988 00000000 00000000 c6f65990 c6f65990 c6f65f10 00000000 c6f659a0 c6f659a0
59a8 00000000 c051056c 00000000 ca1349c0 00000000 00000000 c6f17c80 afa03000
R9: 0xc6f66890:
6890 00000000 00000000 c6f66898 c6f66898 c6f6a5c8 00000000 0000000a 00000000
68b0 00000000 00000000 c8325840 b0001000 b0009000 c6f66338 ca10a338 0000030f
68d0 08000875 00000001 c6f651f4 c6f65cf4 c3965620 cea795c8 00000000 00000000
68f0 c6f668f0 c6f668f0 00000000 c051056c 00000001 ca143740 00000000 00000000
6910 c6f17c80 0001c000 00021000 c3965288 c6f65910 0000010f 00100073 c6f6592d
6930 00000000 00000000 00000000 00000000 00000000 00000000 c6f66948 c6f66948
6950 00000000 00000000 0000001c 00000000 00000000 00000000 c8325840 afc00000
6970 afc01000 c6f66c80 c6f65128 0000030f 08100075 c6f66c44 c6f66c9c ca1066c4
R10: 0xc0755330:
5330 0000000f 00000000 c09ed100 00000000 c09ed180 00000000 00000000 00000001
5350 00000001 c09ed000 c09ed040 c09ed080 c09ed0c0 00000008 00008000 0000002c
5370 00000000 c09e5000 0008f7fc c07e3000 00000000 00000000 00000000 0008ffff
5390 00010000 0000f800 d0000000 00000000 000412a9 00000000 00000001 00000000
53b0 cf000e40 cf000dc0 00000ac4 ce80d3c0 c81f360c f8000000 c6f072c0 00000001
53d0 b0000000 0f800000 00000001 00000080 c07553f0 00000002 00000080 c07557f8
53f0 80000000 0f800000 00000000 00000000 00000000 00000000 00000000 00000000
5410 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Process sleep (pid: 4225, stack limit = 0xc6f542f0)
Stack: (0xc6f55e78 to 0xc6f56000)
5e60: c6f65910 00001000
5e80: c06b48f0 00000000 c6f65758 00008000 c6f55ed4 c6f55ea0 c00ef5e8 c00f59b0
5ea0: ffffffff 00000000 c004aa28 c6f17c80 c6f65758 000412a9 00000000 00041364
5ec0: 00000000 00000000 c6f55f14 c6f55ed8 c00f1290 c00ef5ac c6f55ee0 00000000
5ee0: 000000bb c06b48f0 c6f17c80 c6f17c80 00000000 00000000 c6f17cb4 c004aa28
5f00: c6f54000 00000001 c6f55f2c c6f55f18 c0078d6c c00f1168 c6f17c80 c896f0c0
5f20: c6f55f54 c6f55f30 c007cab8 c0078d3c c896f0c0 00000000 c896f0c0 00000000
5f40: 00000002 000000f8 c6f55f7c c6f55f58 c007e238 c007c984 400ab000 c004aa28
5f60: c6f54000 00000000 c6f55f84 c6f55f78 c6f55f94 c6f55f80 c007e730 c007e080
5f80: 00000000 bed67ce4 c6f55fa4 c6f55f98 c007e778 c007e6b8 00000000 c6f55fa8
5fa0: c004a880 c007e76c 00000000 bed67ce4 00000000 00001000 afd46300 afd46300
5fc0: 00000000 bed67ce4 00000002 000000f8 00000000 00000000 00000000 00000000
5fe0: ffffff44 bed67cc0 afd1ceeb afd0af4c 60000010 00000000 00010074 000026f0
Backtrace:
[<c00f59a4>] (unlink_anon_vmas+0x0/0xac) from [<c00ef5e8>] (free_pgtables+0x48/0xac)
[<c00ef5a0>] (free_pgtables+0x0/0xac) from [<c00f1290>] (exit_mmap+0x134/0x1a0)
[<c00f115c>] (exit_mmap+0x0/0x1a0) from [<c0078d6c>] (mmput+0x3c/0xd8)
[<c0078d30>] (mmput+0x0/0xd8) from [<c007cab8>] (exit_mm+0x140/0x14c)
r5:c896f0c0 r4:c6f17c80
[<c007c978>] (exit_mm+0x0/0x14c) from [<c007e238>] (do_exit+0x1c4/0x638)
r7:000000f8 r6:00000002 r5:00000000 r4:c896f0c0
[<c007e074>] (do_exit+0x0/0x638) from [<c007e730>] (do_group_exit+0x84/0xb4)
[<c007e6ac>] (do_group_exit+0x0/0xb4) from [<c007e778>] (sys_exit_group+0x18/0x20)
r5:bed67ce4 r4:00000000
[<c007e760>] (sys_exit_group+0x0/0x20) from [<c004a880>] (ret_fast_syscall+0x0/0x30)
Code: e2801004 0a000009 e5943014 e5942010 (e5823004)
---[ end trace ff8af2fde797dcc4 ]---
Kernel panic - not syncing: Fatal exception
Backtrace:
[<c004ee1c>] (dump_backtrace+0x0/0x110) from [<c04f1e6c>] (dump_stack+0x18/0x1c)
r7:00000001 r6:c00f59e6 r5:c071b168 r4:c071b168
[<c04f1e54>] (dump_stack+0x0/0x1c) from [<c04f1ed4>] (panic+0x64/0x180)
[<c04f1e70>] (panic+0x0/0x180) from [<c004f1f8>] (die+0x2cc/0x320)
r3:00000001 r2:c0685ea7 r1:c6f55c58 r0:c0609963
[<c004ef2c>] (die+0x0/0x320) from [<c00524b4>] (__do_kernel_fault+0x6c/0x8c)
[<c0052448>] (__do_kernel_fault+0x0/0x8c) from [<c04f6020>] (do_page_fault+0x294/0x2b8)
r9:20000113 r8:00000000 r7:00000004 r6:c896f0c0 r5:c06b466c
r4:c6f55e30
[<c04f5d8c>] (do_page_fault+0x0/0x2b8) from [<c003f2a4>] (do_DataAbort+0x3c/0xa0)
[<c003f268>] (do_DataAbort+0x0/0xa0) from [<c04f406c>] (__dabt_svc+0x4c/0x60)
Exception stack(0xc6f55e30 to 0xc6f55e78)
5e20: ceaf2128 ceaf212c 00000000 c051056c
5e40: c6f65788 c6f65788 c6f65948 00200200 00100100 c6f66910 c07553b0 c6f55e9c
5e60: c6f55e78 c6f55e78 c00f5a2c c00f59e4 a0000013 ffffffff
r7:00200200 r6:c6f65948 r5:c6f55e64 r4:ffffffff
[<c00f59a4>] (unlink_anon_vmas+0x0/0xac) from [<c00ef5e8>] (free_pgtables+0x48/0xac)
[<c00ef5a0>] (free_pgtables+0x0/0xac) from [<c00f1290>] (exit_mmap+0x134/0x1a0)
[<c00f115c>] (exit_mmap+0x0/0x1a0) from [<c0078d6c>] (mmput+0x3c/0xd8)
[<c0078d30>] (mmput+0x0/0xd8) from [<c007cab8>] (exit_mm+0x140/0x14c)
r5:c896f0c0 r4:c6f17c80
[<c007c978>] (exit_mm+0x0/0x14c) from [<c007e238>] (do_exit+0x1c4/0x638)
r7:000000f8 r6:00000002 r5:00000000 r4:c896f0c0
[<c007e074>] (do_exit+0x0/0x638) from [<c007e730>] (do_group_exit+0x84/0xb4)
[<c007e6ac>] (do_group_exit+0x0/0xb4) from [<c007e778>] (sys_exit_group+0x18/0x20)
r5:bed67ce4 r4:00000000
[<c007e760>] (sys_exit_group+0x0/0x20) from [<c004a880>] (ret_fast_syscall+0x0/0x30)
我用gdb调试，出错行是在函数__list_del()函数里面。
GNU gdb (Sourcery G++ Lite 2009q1-203) 6.8.50.20081022-cvs
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi".
For bug reporting instructions, please see:
<https://support.codesourcery.com/GNUToolchain/>...
(gdb)
(gdb) l *0xc00f59e4
0xc00f59e4 is in unlink_anon_vmas (include/linux/list.h:88).
83 * This is only for internal list manipulation where we know
84 * the prev/next entries already!
85 */
86 static inline void __list_del(struct list_head * prev, struct list_head * next)
87 {
88 next->prev = prev;
89 prev->next = next;
90 }
91
92 /**
(gdb)
是在88行。next->prev = prev;
还有几个其它的oops信息，但是出错行都是在__list_del里面！！！！
请大家帮看一下是什么问题，应该从哪里入手。。
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