From: Hu Tao <hutao@cn.fujitsu.com>
To: lkml <linux-kernel@vger.kernel.org>
Cc: "Rusty Russell" <rusty@rustcorp.com.au>,
"Tejun Heo" <tj@kernel.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Am��rico Wang" <xiyou.wangcong@gmail.com>
Subject: [PATCH resend] Update num_symtab, symtab and strtab right after setup of core_num_syms, core_symtab and core_strtab.
Date: Tue, 28 Sep 2010 09:06:28 +0800 [thread overview]
Message-ID: <20100928010628.GA6923@localhost.localdomain> (raw)
symtab/strtab refer to memory that will be vfreed when load_module() is
done. So update them early.
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
---
kernel/module.c | 9 ++++-----
1 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/kernel/module.c b/kernel/module.c
index d0b5f8d..d5dc98b 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2029,6 +2029,10 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
for (*s = 0, i = 1; i < info->sechdrs[info->index.str].sh_size; ++i)
if (test_bit(i, info->strmap))
*++s = mod->strtab[i];
+
+ mod->num_symtab = mod->core_num_syms;
+ mod->symtab = mod->core_symtab;
+ mod->strtab = mod->core_strtab;
}
#else
static inline void layout_symtab(struct module *mod, struct load_info *info)
@@ -2738,11 +2742,6 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
/* Drop initial reference. */
module_put(mod);
trim_init_extable(mod);
-#ifdef CONFIG_KALLSYMS
- mod->num_symtab = mod->core_num_syms;
- mod->symtab = mod->core_symtab;
- mod->strtab = mod->core_strtab;
-#endif
module_free(mod, mod->module_init);
mod->module_init = NULL;
mod->init_size = 0;
--
1.7.3
next reply other threads:[~2010-09-28 1:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-28 1:06 Hu Tao [this message]
2010-09-28 6:01 ` [PATCH resend] Update num_symtab, symtab and strtab right after setup of core_num_syms, core_symtab and core_strtab Hu Tao
2010-10-05 0:09 ` Rusty Russell
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