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可以根据这一行找到代码出先的地方IP: [<c0562f07>] tcp_sendmsg+0x607/0xa50 其中0x607就是函数出现位置 即在该函数的第0X607字节
Dec 5 15:37:42 ubuntu kernel: [ 257.845883] BUG: unable to handle kernel NULL pointer dereference at 00000009
Dec 5 15:37:42 ubuntu kernel: [ 257.845976] IP: [<c0562f07>] tcp_sendmsg+0x607/0xa50
Dec 5 15:37:42 ubuntu kernel: [ 257.846041] *pde = 00000000
Dec 5 15:37:42 ubuntu kernel: [ 257.846077] Oops: 0002 [#1] SMP
Dec 5 15:37:42 ubuntu kernel: [ 257.846121] Modules linked in: binfmt_misc i915 snd_hda_codec_realtek snd_hda_intel snd_hda_codec drm_kms_helper snd_hwdep snd_pcm drm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd i2c_algo_bit intel_agp soundcore intel_gtt snd_page_alloc ppdev agpgart lp parport_pc video parport usbhid hid floppy atl1c
Dec 5 15:37:42 ubuntu kernel: [ 257.846540]
Dec 5 15:37:42 ubuntu kernel: [ 257.846562] Pid: 1513, comm: ftp Not tainted 3.1.4 #211 Gigabyte Technology Co., Ltd. G31M-ES2C/G31M-ES2C
Dec 5 15:37:42 ubuntu kernel: [ 257.846670] EIP: 0060:[<c0562f07>] EFLAGS: 00210206 CPU: 0
Dec 5 15:37:42 ubuntu kernel: [ 257.846730] EIP is at tcp_sendmsg+0x607/0xa50
Dec 5 15:37:42 ubuntu kernel: [ 257.846778] EAX: 0000002b EBX: e7d40500 ECX: 00000009 EDX: 00000000
Dec 5 15:37:42 ubuntu kernel: [ 257.846844] ESI: f1db6e00 EDI: 00000009 EBP: d8ee7e40 ESP: d8ee7da8
Dec 5 15:37:42 ubuntu kernel: [ 257.846909] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Dec 5 15:37:42 ubuntu kernel: [ 257.846967] Process ftp (pid: 1513, ti=d8ee6000 task=d7398ca0 task.ti=d8ee6000)
Dec 5 15:37:42 ubuntu kernel: [ 257.847041] Stack:
Dec 5 15:37:42 ubuntu kernel: [ 257.847065] c07d7fb4 d8ee7dbc c012b866 00000009 00000001 d8ee7f50 00001c48 00000000
Dec 5 15:37:42 ubuntu kernel: [ 257.847174] 00000041 00000000 00000000 00000000 d7395b78 00000009 b7808000 00000000
Dec 5 15:37:42 ubuntu kernel: [ 257.847281] 000005a7 f6af4280 00000000 c08705e4 00000000 00000000 00000000 00000001
Dec 5 15:37:42 ubuntu kernel: [ 257.847388] Call Trace:
Dec 5 15:37:42 ubuntu kernel: [ 257.847422] [<c012b866>] ? __kunmap_atomic+0x76/0xa0
Dec 5 15:37:42 ubuntu kernel: [ 257.847479] [<c05824a7>] inet_sendmsg+0x47/0xb0
Dec 5 15:37:42 ubuntu kernel: [ 257.847532] [<c0514d3e>] sock_aio_write+0x14e/0x160
Dec 5 15:37:42 ubuntu kernel: [ 257.847589] [<c0219a8d>] ? mem_cgroup_charge_common+0x5d/0x70
Dec 5 15:37:42 ubuntu kernel: [ 257.847654] [<c021e554>] do_sync_write+0xa4/0xe0
Dec 5 15:37:42 ubuntu kernel: [ 257.847706] [<c021e6d8>] ? rw_verify_area+0x68/0x120
Dec 5 15:37:42 ubuntu kernel: [ 257.847762] [<c021ebb6>] vfs_write+0x156/0x170
Dec 5 15:37:42 ubuntu kernel: [ 257.847812] [<c021eca2>] sys_write+0x42/0x70 |
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发表于 2012-12-05 16:05
