module: set ksymtab/kcrctab* section addresses to 0x0
These __ksymtab*/__kcrctab* sections currently have non-zero addresses. Non-zero section addresses in a relocatable ELF confuse GDB and it ends up not relocating all symbols when add-symbol-file is used on modules which have exports. The kernel's module loader does not care about these addresses, so let's just set them to zero. Before: $ readelf -S lib/notifier-error-inject.ko | grep 'Name\| __ksymtab_gpl' [Nr] Name Type Addr Off Size ES Flg Lk Inf Al [ 8] __ksymtab_gpl PROGBITS 0000000c 0001b4 000010 00 A 0 0 4 (gdb) add-symbol-file lib/notifier-error-inject.ko 0x500000 -s .bss 0x700000 add symbol table from file "lib/notifier-error-inject.ko" at .text_addr = 0x500000 .bss_addr = 0x700000 (gdb) p ¬ifier_err_inject_dir $3 = (struct dentry **) 0x0 After: $ readelf -S lib/notifier-error-inject.ko | grep 'Name\| __ksymtab_gpl' [Nr] Name Type Addr Off Size ES Flg Lk Inf Al [ 8] __ksymtab_gpl PROGBITS 00000000 0001b4 000010 00 A 0 0 4 (gdb) add-symbol-file lib/notifier-error-inject.ko 0x500000 -s .bss 0x700000 add symbol table from file "lib/notifier-error-inject.ko" at .text_addr = 0x500000 .bss_addr = 0x700000 (gdb) p ¬ifier_err_inject_dir $3 = (struct dentry **) 0x700000 Signed-off-by: Rabin Vincent <rabin.vincent@axis.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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