依据linux Oops信息准确定位错误代码所在行

在linux下调tvp5150am1的过程中，遇到了一kernel oops，内容如下：

[   66.714603] Unable to handle kernel paging request at virtual address 00100104

[   66.721658] pgd = d37d0000

[   66.724344] [00100104] *pgd=950c2831, *pte=00000000, *ppte=00000000

[   66.730587] Internal error: Oops: 817 [#1] PREEMPT

[   66.735351] Modules linked in: vpu_encoder vpu_decoder_ext vpu_decoder vpu_manager ufsd(P) ohci_hcd ehci_hcd tcc_ndd(P) tcc_mtd tcc_nand(P)

[   66.747835] CPU: 0    Tainted: P             (3.0.8-tcc #31)

[   66.753481] PC is at cif_cam_isr_in8920+0x5c/0x368

[   66.758234] LR is at cif_cam_isr_in8920+0x28/0x368

[   66.763003] pc : [<c02acfb4>]    lr : [<c02acf80>]    psr: a0000193

[   66.763013] sp : d0055f18  ip : 00000001  fp : 00000001

[   66.774439] r10: 408b3f90  r9 : c0666058  r8 : 00000000

[   66.779640] r7 : 00000000  r6 : 00000000  r5 : 00000085  r4 : c0673d70

[   66.786141] r3 : c0673ee0  r2 : 00200200  r1 : 00100100  r0 : c0673ed8

[   66.792642] Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user

[   66.799835] Control: 10c53c7d  Table: 937d0059  DAC: 00000015

[   66.805552]

[   66.805556] PC: 0xc02acf34:

[   66.809797] cf34  aa000001 e59f0014 eb04e57b e1a00006 e8bd807c c0673d70 c0591780 c02acf58

[   66.817943] cf54  c0591c93 e92d47f0 e59f433c e5946014 e3560000 1a000080 e594372c e5933040

[   66.826090] cf74  e3130040 0a0000c6 eb0006b3 e5d43000 e3530000 1a000069 e5d42001 e3520000

[   66.834237] cf94  15c43000 1a000069 e5943748 e3530000 0a000008 e5932004 e2840f5a e5931000

[   66.842384] cfb4  e5812004 e5821000 e594216c e584316c e8830005 e5823000 e59f42cc e3a0e05c

[   66.850531] cfd4  e1a02004 e5d43120 e594c678 e5b20160 e5d41120 e023c39e e584174c e5843748

[   66.858678] cff4  e5900000 e1500002 0a00003b e1530000 0a000039 e5933008 e1510003 0a000008

[   66.866825] d014  e59f0288 eb04e544 e5943748 e59f0280 e5931008 eb04e540 e594274c e5943748

[   66.874973]

[   66.874978] LR: 0xc02acf00:

[   66.879219] cf00  1a00000e e59fc040 e3a03020 e3a00085 e59f1038 e1a02005 e58d5004 e58dc000

[   66.887365] cf20  ebf794b7 e2506000 a3a03001 a1a06005 a5c43744 aa000001 e59f0014 eb04e57b

[   66.895512] cf40  e1a00006 e8bd807c c0673d70 c0591780 c02acf58 c0591c93 e92d47f0 e59f433c

[   66.903660] cf60  e5946014 e3560000 1a000080 e594372c e5933040 e3130040 0a0000c6 eb0006b3

[   66.911806] cf80  e5d43000 e3530000 1a000069 e5d42001 e3520000 15c43000 1a000069 e5943748

[   66.919953] cfa0  e3530000 0a000008 e5932004 e2840f5a e5931000 e5812004 e5821000 e594216c

[   66.928100] cfc0  e584316c e8830005 e5823000 e59f42cc e3a0e05c e1a02004 e5d43120 e594c678

[   66.936247] cfe0  e5b20160 e5d41120 e023c39e e584174c e5843748 e5900000 e1500002 0a00003b

[   66.944396]

[   66.944400] SP: 0xd0055e98:

[   66.948641] 5e98  1423a440 00000042 00000042 1443fd00 1423a440 00000042 c060bd28 00000042

[   66.956788] 5eb8  00000000 ffffffff d0055f04 00000000 00000000 c003652c c0673ed8 00100100

[   66.964935] 5ed8  00200200 c0673ee0 c0673d70 00000085 00000000 00000000 00000000 c0666058

[   66.973082] 5ef8  408b3f90 00000001 00000001 d0055f18 c02acf80 c02acfb4 a0000193 ffffffff

[   66.981228] 5f18  c576fee0 00000085 c0611654 00000000 00000000 c0666058 408b3f90 c0091494

[   66.989375] 5f38  c0611654 c576fee0 d0055f60 c0611654 c061169c c576fee0 00000001 00000000

[   66.997522] 5f58  d0054000 408b3f90 568f9dca c0091614 c0611654 c061169c 00000020 c00935e0

[   67.005669] 5f78  00000020 00000001 00000020 c004030c 00000014 00000000 00000001 c00911a0

[   67.013818]

[   67.013822] R0: 0xc0673e58:

[   67.018063] 3e58  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.026210] 3e78  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000003

[   67.034357] 3e98  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.042504] 3eb8  00000000 00000000 00000000 00000000 00000000 00000000 c0673f3c c0674108

[   67.050651] 3ed8  c0673ed8 c0673ed8 00100100 00200200 00000000 00000001 00012c00 00000000

[   67.058798] 3ef8  00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.066944] 3f18  00000001 00000000 00096000 00000000 00000000 00000000 00000000 00000000

[   67.075092] 3f38  c0673d78 c0673f98 c0673ed0 00000001 00000001 00000000 00000002 00000001

[   67.083240]

[   67.083244] R3: 0xc0673e60:

[   67.087485] 3e60  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.095632] 3e80  00000000 00000000 00000000 00000000 00000000 00000003 00000000 00000000

[   67.103779] 3ea0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.111926] 3ec0  00000000 00000000 00000000 00000000 c0673f3c c0674108 c0673ed8 c0673ed8

[   67.120073] 3ee0  00100100 00200200 00000000 00000001 00012c00 00000000 00000001 00000000

[   67.128220] 3f00  00000000 00000000 00000000 00000000 00000000 00000000 00000001 00000000

[   67.136367] 3f20  00096000 00000000 00000000 00000000 00000000 00000000 c0673d78 c0673f98

[   67.144514] 3f40  c0673ed0 00000001 00000001 00000000 00000002 00000001 00000000 00000000

[   67.152662]

[   67.152666] R4: 0xc0673cf0:

[   67.156907] 3cf0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.165054] 3d10  00000000 00000000 00000000 00000000 00000000 00000000 00000000 c06021a0

[   67.173201] 3d30  d5bbd400 d5bc7380 d5c49ac0 00000032 c02ab8b0 c02ab8b4 00000280 000001e0

[   67.181348] 3d50  56595559 00000001 000005a0 000a8c00 00000007 00000000 00000280 000001e0

[   67.189495] 3d70  00000000 f3380000 00000000 00000000 01010100 00000000 02d00000 000000f0

[   67.197642] 3d90  00000000 02800000 000001e0 97c00000 00000000 00000006 97c00000 97c4b000

[   67.205789] 3db0  97c5dc00 97c80000 97ccb000 97cddc00 97d00000 97d4b000 97d5dc00 97d80000

[   67.213936] 3dd0  97dcb000 97dddc00 97e00000 97e4b000 97e5dc00 97e80000 97ecb000 97eddc00

[   67.222085]

[   67.222089] R9: 0xc0665fd8:

[   67.226330] 5fd8  00000000 d355d324 00000000 00000000 00000000 00000000 00000000 00000000

[   67.234477] 5ff8  00000000 00000000 00000000 00000000 c57bec84 00000000 00000000 00000000

[   67.242623] 6018  d50f78e4 d0285604 00000000 d50f7164 00000000 c57be144 00000000 00000003

[   67.250770] 6038  d6401e60 d6548ee0 ffffffff ffffffff ffffffff ffffffff ffffffff 00000001

[   67.258917] 6058  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.267064] 6078  00000000 00000000 00000000 d641dbc0 00000000 00000000 00000000 00000000

[   67.275211] 6098  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

[   67.283358] 60b8  00000000 00000000 00000000 c0600920 00000000 00000000 00000000 00000000

[   67.291510] Process WindowManager (pid: 1198, stack limit = 0xd00542f0)

[   67.298096] Stack: (0xd0055f18 to 0xd0056000)

[   67.302432] 5f00:                                                       c576fee0 00000085

[   67.310586] 5f20: c0611654 00000000 00000000 c0666058 408b3f90 c0091494 c0611654 c576fee0

[   67.318733] 5f40: d0055f60 c0611654 c061169c c576fee0 00000001 00000000 d0054000 408b3f90

[   67.326880] 5f60: 568f9dca c0091614 c0611654 c061169c 00000020 c00935e0 00000020 00000001

[   67.335026] 5f80: 00000020 c004030c 00000014 00000000 00000001 c00911a0 00000014 c0031060

[   67.343174] 5fa0: ffffffff f5100000 00000001 c00367a0 01f067bc 4154c4d0 00000001 00000001

[   67.351321] 5fc0: 00000005 ffe93b65 00000001 41552d78 01f06700 fffffe4c 408b3f90 568f9dca

[   67.359468] 5fe0: 0000b624 5c51cca8 40843a7c 408439ac 20000010 ffffffff 00000000 00000000

[   67.367637] [<c02acfb4>] (cif_cam_isr_in8920+0x5c/0x368) from [<c0091494>] (handle_irq_event_percpu+0x30/0x174)

[   67.377675] [<c0091494>] (handle_irq_event_percpu+0x30/0x174) from [<c0091614>] (handle_irq_event+0x3c/0x5c)

[   67.387467] [<c0091614>] (handle_irq_event+0x3c/0x5c) from [<c00935e0>] (handle_level_irq+0xc4/0xf4)

[   67.396572] [<c00935e0>] (handle_level_irq+0xc4/0xf4) from [<c004030c>] (tcc8920_irq_vioc_handler+0xd4/0xe0)

[   67.406361] [<c004030c>] (tcc8920_irq_vioc_handler+0xd4/0xe0) from [<c00911a0>] (generic_handle_irq+0x24/0x38)

[   67.416332] [<c00911a0>] (generic_handle_irq+0x24/0x38) from [<c0031060>] (asm_do_IRQ+0x60/0x84)

[   67.425083] [<c0031060>] (asm_do_IRQ+0x60/0x84) from [<c00367a0>] (__irq_usr+0x40/0xc0)

[   67.433040] Exception stack(0xd0055fb0 to 0xd0055ff8)

[   67.438071] 5fa0:                                     01f067bc 4154c4d0 00000001 00000001

[   67.446224] 5fc0: 00000005 ffe93b65 00000001 41552d78 01f06700 fffffe4c 408b3f90 568f9dca

[   67.454368] 5fe0: 0000b624 5c51cca8 40843a7c 408439ac 20000010 ffffffff

[   67.460957] Code: 0a000008 e5932004 e2840f5a e5931000 (e5812004)

[   67.467232] ---[ end trace 0feebdc8a0e1374f ]---

[   67.471677] Kernel panic - not syncing: Fatal exception in interrupt

[   67.478064] [<c003b2bc>] (unwind_backtrace+0x0/0xf0) from [<c03e63fc>] (panic+0x60/0x194)

[   67.486192] [<c03e63fc>] (panic+0x60/0x194) from [<c003a150>] (die+0x178/0x1b8)

[   67.493461] [<c003a150>] (die+0x178/0x1b8) from [<c003c304>] (__do_kernel_fault+0x64/0x84)

[   67.501711] [<c003c304>] (__do_kernel_fault+0x64/0x84) from [<c003c4e8>] (do_page_fault+0x1c4/0x1dc)

[   67.510805] [<c003c4e8>] (do_page_fault+0x1c4/0x1dc) from [<c00312b8>] (do_DataAbort+0x34/0x94)

[   67.519472] [<c00312b8>] (do_DataAbort+0x34/0x94) from [<c003652c>] (__dabt_svc+0x4c/0x60)

[   67.527685] Exception stack(0xd0055ed0 to 0xd0055f18)

[   67.532695] 5ec0:                                     c0673ed8 00100100 00200200 c0673ee0

[   67.540881] 5ee0: c0673d70 00000085 00000000 00000000 00000000 c0666058 408b3f90 00000001

[   67.549012] 5f00: 00000001 d0055f18 c02acf80 c02acfb4 a0000193 ffffffff

[   67.555589] [<c003652c>] (__dabt_svc+0x4c/0x60) from [<c02acfb4>] (cif_cam_isr_in8920+0x5c/0x368)

[   67.564457] [<c02acfb4>] (cif_cam_isr_in8920+0x5c/0x368) from [<c0091494>] (handle_irq_event_percpu+0x30/0x174)

[   67.574503] [<c0091494>] (handle_irq_event_percpu+0x30/0x174) from [<c0091614>] (handle_irq_event+0x3c/0x5c)

[   67.584296] [<c0091614>] (handle_irq_event+0x3c/0x5c) from [<c00935e0>] (handle_level_irq+0xc4/0xf4)

[   67.593404] [<c00935e0>] (handle_level_irq+0xc4/0xf4) from [<c004030c>] (tcc8920_irq_vioc_handler+0xd4/0xe0)

[   67.603190] [<c004030c>] (tcc8920_irq_vioc_handler+0xd4/0xe0) from [<c00911a0>] (generic_handle_irq+0x24/0x38)

[   67.613157] [<c00911a0>] (generic_handle_irq+0x24/0x38) from [<c0031060>] (asm_do_IRQ+0x60/0x84)

[   67.621913] [<c0031060>] (asm_do_IRQ+0x60/0x84) from [<c00367a0>] (__irq_usr+0x40/0xc0)

[   67.629868] Exception stack(0xd0055fb0 to 0xd0055ff8)

[   67.634878] 5fa0:                                     01f067bc 4154c4d0 00000001 00000001

[   67.643058] 5fc0: 00000005 ffe93b65 00000001 41552d78 01f06700 fffffe4c 408b3f90 568f9dca

[   67.651204] 5fe0: 0000b624 5c51cca8 40843a7c 408439ac 20000010 ffffffff

[   67.657779] Rebooting in 5 seconds..

利用Oops信息准确定位错误代码所在行步骤：

1、编译的时候需要在menuconfig里面打开complie with debug info选项：

进入menuconfig ----------> 进入Kernel hacking ------> 选择 Compile the kernel with debug info ----> 保存，退出。

2、利用arm-linux-androideabi-gdb调试，注意这里的gdb调试器视具体情况，名字不一样，以方案提供商的工具为准。

arm-linux-androideabi-gdb vmlinux

3、看Oops 信息里面的这一行：PC is at cif_cam_isr_in8920+0x5c/0x368

在命令行上键入命令：l（小写的L） * at cif_cam_isr_in8920+0x5c // l表示查找，*表示通配符

反馈信息如下：

(gdb) l *cif_cam_isr_in8920+0x5c

0xc02acfb4 is in cif_cam_isr_in8920 (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      /**