[PATCH] null-terminate over-long /proc/kallsyms symbols
Got a customer bug report (https://bugzilla.novell.com/190296) about kernel
symbols longer than 127 characters which end up in a string buffer that is
not NULL terminated, leading to garbage in /proc/kallsyms. Using strlcpy
prevents this from happening, even though such symbols still won't come out
right.
A better fix would be to not use a fixed-size buffer, but it's probably not
worth the trouble. (Modversion'ed symbols even have a length limit of 60.)
[bunk@stusta.de: build fix]
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/module.h b/include/linux/module.h
index d06c74f..0dfb794 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -362,10 +362,8 @@
/* Returns module and fills in value, defined and namebuf, or NULL if
symnum out of range. */
-struct module *module_get_kallsym(unsigned int symnum,
- unsigned long *value,
- char *type,
- char namebuf[128]);
+struct module *module_get_kallsym(unsigned int symnum, unsigned long *value,
+ char *type, char *name, size_t namelen);
/* Look for this name: can be of form module:name. */
unsigned long module_kallsyms_lookup_name(const char *name);
@@ -535,8 +533,8 @@
static inline struct module *module_get_kallsym(unsigned int symnum,
unsigned long *value,
- char *type,
- char namebuf[128])
+ char *type, char *name,
+ size_t namelen)
{
return NULL;
}