Re: [Patch 4/4] module: trim exception table in module_free()

Amerigo Wang
2009-05-27T07:46:11Z

Rusty Russell wrote:
> __ex_table ends up with two entries:
>
> Contents of section __ex_table:
> 0000 0c000000 00000000 0e000000 00000000 ................
> 0010 10000000 0a000000 12000000 0a000000 ................
>
> The first is for the __put_user in .text (extable_not_init()) and the second is
> for the one in .init.text (init()).
>
> Depending on how the module gets allocated, the one referring to .init.text
> may be first or last.
>

Hmm, how about the following? :-)

struct exception_table_entry *p = mod->extable;

for (;p <= mod->extable+mod->num_exentries; p++ )
if (with_in_module_init(p->insn, mod))
trim_it(p);