加载内核模块时出现未知符号

Question

我需要帮助理解插入模块时出现错误的原因.我试过这个没有成功.

$ 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

我已按照此论坛的建议解决了这个问题:

1. 编译scst.
2. 附加生成Module.symvers的存在/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scst到/lib/modules/<version>/extra.
4. depmod -a.
5. 编译lpfc_scst.
6. 插入模块lpfc_scst没有问题.

祝你今天愉快.