1 files changed, 54 insertions, 46 deletions

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 8d46ea7d6715..161b7846733e 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -384,11 +384,19 @@ static int parse_elf(struct elf_info *info, const char *filename)
                 return 0;
         }
         /* Fix endianness in ELF header */
-        hdr->e_shoff    = TO_NATIVE(hdr->e_shoff);
-        hdr->e_shstrndx = TO_NATIVE(hdr->e_shstrndx);
-        hdr->e_shnum    = TO_NATIVE(hdr->e_shnum);
-        hdr->e_machine  = TO_NATIVE(hdr->e_machine);
-        hdr->e_type     = TO_NATIVE(hdr->e_type);
+        hdr->e_type      = TO_NATIVE(hdr->e_type);
+        hdr->e_machine   = TO_NATIVE(hdr->e_machine);
+        hdr->e_version   = TO_NATIVE(hdr->e_version);
+        hdr->e_entry     = TO_NATIVE(hdr->e_entry);
+        hdr->e_phoff     = TO_NATIVE(hdr->e_phoff);
+        hdr->e_shoff     = TO_NATIVE(hdr->e_shoff);
+        hdr->e_flags     = TO_NATIVE(hdr->e_flags);
+        hdr->e_ehsize    = TO_NATIVE(hdr->e_ehsize);
+        hdr->e_phentsize = TO_NATIVE(hdr->e_phentsize);
+        hdr->e_phnum     = TO_NATIVE(hdr->e_phnum);
+        hdr->e_shentsize = TO_NATIVE(hdr->e_shentsize);
+        hdr->e_shnum     = TO_NATIVE(hdr->e_shnum);
+        hdr->e_shstrndx  = TO_NATIVE(hdr->e_shstrndx);
         sechdrs = (void *)hdr + hdr->e_shoff;
         info->sechdrs = sechdrs;
 
@@ -402,13 +410,16 @@ static int parse_elf(struct elf_info *info, const char *filename)
 
         /* Fix endianness in section headers */
         for (i = 0; i < hdr->e_shnum; i++) {
-                sechdrs[i].sh_type   = TO_NATIVE(sechdrs[i].sh_type);
-                sechdrs[i].sh_offset = TO_NATIVE(sechdrs[i].sh_offset);
-                sechdrs[i].sh_size   = TO_NATIVE(sechdrs[i].sh_size);
-                sechdrs[i].sh_link   = TO_NATIVE(sechdrs[i].sh_link);
-                sechdrs[i].sh_name   = TO_NATIVE(sechdrs[i].sh_name);
-                sechdrs[i].sh_info   = TO_NATIVE(sechdrs[i].sh_info);
-                sechdrs[i].sh_addr   = TO_NATIVE(sechdrs[i].sh_addr);
+                sechdrs[i].sh_name      = TO_NATIVE(sechdrs[i].sh_name);
+                sechdrs[i].sh_type      = TO_NATIVE(sechdrs[i].sh_type);
+                sechdrs[i].sh_flags     = TO_NATIVE(sechdrs[i].sh_flags);
+                sechdrs[i].sh_addr      = TO_NATIVE(sechdrs[i].sh_addr);
+                sechdrs[i].sh_offset    = TO_NATIVE(sechdrs[i].sh_offset);
+                sechdrs[i].sh_size      = TO_NATIVE(sechdrs[i].sh_size);
+                sechdrs[i].sh_link      = TO_NATIVE(sechdrs[i].sh_link);
+                sechdrs[i].sh_info      = TO_NATIVE(sechdrs[i].sh_info);
+                sechdrs[i].sh_addralign = TO_NATIVE(sechdrs[i].sh_addralign);
+                sechdrs[i].sh_entsize   = TO_NATIVE(sechdrs[i].sh_entsize);
         }
         /* Find symbol table. */
         for (i = 1; i < hdr->e_shnum; i++) {
@@ -716,41 +727,37 @@ int match(const char *sym, const char * const pat[])
 
 /* sections that we do not want to do full section mismatch check on */
 static const char *section_white_list[] =
-        { ".debug*", ".stab*", ".note*", ".got*", ".toc*", NULL };
+{
+        ".comment*",
+        ".debug*",
+        ".mdebug*",        /* alpha, score, mips etc. */
+        ".pdr",            /* alpha, score, mips etc. */
+        ".stab*",
+        ".note*",
+        ".got*",
+        ".toc*",
+        NULL
+};
 
 /*
- * Is this section one we do not want to check?
- * This is often debug sections.
- * If we are going to check this section then
- * test if section name ends with a dot and a number.
- * This is used to find sections where the linker have
- * appended a dot-number to make the name unique.
+ * This is used to find sections missing the SHF_ALLOC flag.
  * The cause of this is often a section specified in assembler
- * without "ax" / "aw" and the same section used in .c
- * code where gcc add these.
+ * without "ax" / "aw".
  */
-static int check_section(const char *modname, const char *sec)
-{
-        const char *e = sec + strlen(sec) - 1;
-        if (match(sec, section_white_list))
-                return 1;
-
-        if (*e && isdigit(*e)) {
-                /* consume all digits */
-                while (*e && e != sec && isdigit(*e))
-                        e--;
-                if (*e == '.' && !strstr(sec, ".linkonce")) {
-                        warn("%s (%s): unexpected section name.\n"
-                             "The (.[number]+) following section name are "
-                             "ld generated and not expected.\n"
-                             "Did you forget to use \"ax\"/\"aw\" "
-                             "in a .S file?\n"
-                             "Note that for example <linux/init.h> contains\n"
-                             "section definitions for use in .S files.\n\n",
-                             modname, sec);
-                }
+static void check_section(const char *modname, struct elf_info *elf,
+                          Elf_Shdr *sechdr)
+{
+        const char *sec = sech_name(elf, sechdr);
+
+        if (sechdr->sh_type == SHT_PROGBITS &&
+            !(sechdr->sh_flags & SHF_ALLOC) &&
+            !match(sec, section_white_list)) {
+                warn("%s (%s): unexpected non-allocatable section.\n"
+                     "Did you forget to use \"ax\"/\"aw\" in a .S file?\n"
+                     "Note that for example <linux/init.h> contains\n"
+                     "section definitions for use in .S files.\n\n",
+                     modname, sec);
         }
-        return 0;
 }
 
 
@@ -928,8 +935,7 @@ static int section_mismatch(const char *fromsec, const char *tosec)
  *           *probe_one, *_console, *_timer
  *
  * Pattern 3:
- *   Whitelist all refereces from .text.head to .init.data
- *   Whitelist all refereces from .text.head to .init.text
+ *   Whitelist all references from .head.text to any init section
  *
  * Pattern 4:
  *   Some symbols belong to init section but still it is ok to reference
@@ -1359,7 +1365,7 @@ static void section_rela(const char *modname, struct elf_info *elf,
         fromsec = sech_name(elf, sechdr);
         fromsec += strlen(".rela");
         /* if from section (name) is know good then skip it */
-        if (check_section(modname, fromsec))
+        if (match(fromsec, section_white_list))
                 return;
 
         for (rela = start; rela < stop; rela++) {
@@ -1403,7 +1409,7 @@ static void section_rel(const char *modname, struct elf_info *elf,
         fromsec = sech_name(elf, sechdr);
         fromsec += strlen(".rel");
         /* if from section (name) is know good then skip it */
-        if (check_section(modname, fromsec))
+        if (match(fromsec, section_white_list))
                 return;
 
         for (rel = start; rel < stop; rel++) {
@@ -1466,6 +1472,7 @@ static void check_sec_ref(struct module *mod, const char *modname,
 
         /* Walk through all sections */
         for (i = 0; i < elf->hdr->e_shnum; i++) {
+                check_section(modname, elf, &elf->sechdrs[i]);
                 /* We want to process only relocation sections and not .init */
                 if (sechdrs[i].sh_type == SHT_RELA)
                         section_rela(modname, elf, &elf->sechdrs[i]);
@@ -1990,6 +1997,7 @@ static void read_markers(const char *fname)
                 if (!mod->skip)
                         add_marker(mod, marker, fmt);
         }
+        release_file(file, size);
         return;
 fail:
         fatal("parse error in markers list file\n");