Fix race between cat /proc/slab_allocators and rmmod

Same story as with cat /proc/*/wchan race vs rmmod race, only
/proc/slab_allocators want more info than just symbol name.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/module.h b/include/linux/module.h
index 099ae5932c68..6d3dc9c4ff96 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -455,6 +455,7 @@ const char *module_address_lookup(unsigned long addr,
                                   unsigned long *offset,
                                   char **modname);
 int lookup_module_symbol_name(unsigned long addr, char *symname);
+int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
 
 /* For extable.c to search modules' exception tables. */
 const struct exception_table_entry *search_module_extables(unsigned long addr);
@@ -531,6 +532,11 @@ static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
         return -ERANGE;
 }
 
+static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name)
+{
+        return -ERANGE;
+}
+
 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
                                         char *type, char *name,
                                         char *module_name, int *exported)