[NETLABEL]: Fix NULL deref in netlbl_unlabel_staticlist_gen() if ifindex not found

[cascardo/linux.git] / kernel / kallsyms.c

diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 474219a..f091d13 100644 (file)
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -32,9 +32,14 @@
 
 /* These will be re-linked against their real values during the second link stage */
 extern const unsigned long kallsyms_addresses[] __attribute__((weak));
-extern const unsigned long kallsyms_num_syms __attribute__((weak));
 extern const u8 kallsyms_names[] __attribute__((weak));
 
+/* tell the compiler that the count isn't in the small data section if the arch
+ * has one (eg: FRV)
+ */
+extern const unsigned long kallsyms_num_syms
+__attribute__((weak, section(".rodata")));
+
 extern const u8 kallsyms_token_table[] __attribute__((weak));
 extern const u16 kallsyms_token_index[] __attribute__((weak));
 
@@ -48,14 +53,6 @@ static inline int is_kernel_inittext(unsigned long addr)
        return 0;
 }
 
-static inline int is_kernel_extratext(unsigned long addr)
-{
-       if (addr >= (unsigned long)_sextratext
-           && addr <= (unsigned long)_eextratext)
-               return 1;
-       return 0;
-}
-
 static inline int is_kernel_text(unsigned long addr)
 {
        if (addr >= (unsigned long)_stext && addr <= (unsigned long)_etext)
@@ -75,8 +72,7 @@ static int is_ksym_addr(unsigned long addr)
        if (all_var)
                return is_kernel(addr);
 
-       return is_kernel_text(addr) || is_kernel_inittext(addr) ||
-               is_kernel_extratext(addr);
+       return is_kernel_text(addr) || is_kernel_inittext(addr);
 }
 
 /* expand a compressed symbol data into the resulting uncompressed string,
@@ -228,10 +224,11 @@ static unsigned long get_symbol_pos(unsigned long addr,
 int kallsyms_lookup_size_offset(unsigned long addr, unsigned long *symbolsize,
                                unsigned long *offset)
 {
+       char namebuf[KSYM_NAME_LEN];
        if (is_ksym_addr(addr))
                return !!get_symbol_pos(addr, symbolsize, offset);
 
-       return !!module_address_lookup(addr, symbolsize, offset, NULL);
+       return !!module_address_lookup(addr, symbolsize, offset, NULL, namebuf);
 }
 
 /*
@@ -246,8 +243,6 @@ const char *kallsyms_lookup(unsigned long addr,
                            unsigned long *offset,
                            char **modname, char *namebuf)
 {
-       const char *msym;
-
        namebuf[KSYM_NAME_LEN - 1] = 0;
        namebuf[0] = 0;
 
@@ -263,10 +258,8 @@ const char *kallsyms_lookup(unsigned long addr,
        }
 
        /* see if it's in a module */
-       msym = module_address_lookup(addr, symbolsize, offset, modname);
-       if (msym)
-               return strncpy(namebuf, msym, KSYM_NAME_LEN - 1);
-
+       return module_address_lookup(addr, symbolsize, offset, modname,
+                                    namebuf);
        return NULL;
 }