linux - 加载内核模块时出现未知符号

Question

我需要帮助来理解为什么在插入模块时出现错误。我试过this没有成功。

$ sudo modprobe lpfc_scst 
FATAL: Error inserting lpfc_scst (/lib/modules/2.6.32-33-generic/extra/lpfc_scst.ko): Unknown symbol in module, or unknown parameter (see dmesg)

$ dmesg | tail
[ 1201.262842] lpfc_scst: Unknown symbol scst_register_target
[ 1201.262949] lpfc_scst: Unknown symbol lpfc_tm_term
[ 1201.263161] lpfc_scst: no symbol version for scst_register_session
[ 1201.263164] lpfc_scst: Unknown symbol scst_register_session
[ 1201.263284] lpfc_scst: no symbol version for scst_rx_mgmt_fn
[ 1201.263286] lpfc_scst: Unknown symbol scst_rx_mgmt_fn
[ 1201.263395] lpfc_scst: no symbol version for scst_unregister_session
[ 1201.263398] lpfc_scst: Unknown symbol scst_unregister_session
[ 1201.263573] lpfc_scst: no symbol version for scst_rx_data
[ 1201.263575] lpfc_scst: Unknown symbol scst_rx_data

$ cat /proc/kallsyms | grep scst_register_target
dffd2a10 r __ksymtab_scst_register_target   [scst]
dffd302e r __kstrtab_scst_register_target   [scst]
dffd2b34 r __kcrctab_scst_register_target   [scst]
dffd2a20 r __ksymtab___scst_register_target_template_non_gpl    [scst]
dffd3063 r __kstrtab___scst_register_target_template_non_gpl    [scst]
dffd2b3c r __kcrctab___scst_register_target_template_non_gpl    [scst]
dffd2c10 r __ksymtab___scst_register_target_template    [scst]
dffd308b r __kstrtab___scst_register_target_template    [scst]
dffd2de8 r __kcrctab___scst_register_target_template    [scst]
dff913a0 t __scst_register_target_template  [scst]
dff90dd0 T scst_register_target [scst]
dff91840 T __scst_register_target_template_non_gpl  [scst]

$

非常感谢。

Answer 1

我已经按照 this forum 上的建议解决了这个问题。 :

1. 已编译 scst .
2. 附加了生成的 Module.symvers存在/lib/modules/<version>/build/Module.symvers (Hack。不知道为什么内核没有看到导出的符号)。
3. 复制了 scst至/lib/modules/<version>/extra .
4. depmod -a .
5. 已编译 lpfc_scst .
6. 插入模块lpfc_scst没有问题。

祝你有美好的一天。