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Nothing major: the stricter permissions checking for sysfs broke

Browse source 
a staging driver; fix included.  Greg KH said he'd take the patch
 but hadn't as the merge window opened, so it's included here
 to avoid breaking build.
 
 Cheers,
 Rusty.
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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull module updates from Rusty Russell:
 "Nothing major: the stricter permissions checking for sysfs broke a
  staging driver; fix included.  Greg KH said he'd take the patch but
  hadn't as the merge window opened, so it's included here to avoid
  breaking build"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  staging: fix up speakup kobject mode
  Use 'E' instead of 'X' for unsigned module taint flag.
  VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms.
  kallsyms: fix percpu vars on x86-64 with relocation.
  kallsyms: generalize address range checking
  module: LLVMLinux: Remove unused function warning from __param_check macro
  Fix: module signature vs tracepoints: add new TAINT_UNSIGNED_MODULE
  module: remove MODULE_GENERIC_TABLE
  module: allow multiple calls to MODULE_DEVICE_TABLE() per module
  module: use pr_cont
This commit is contained in:
Linus Torvalds 2014-04-06 09:38:07 -07:00
commit 6f4c98e1c2
37 changed files with 331 additions and 278 deletions
Download patch file Download diff file Expand all files Collapse all files

14
scripts/mod/file2alias.c
View file

@ -42,7 +42,7 @@ typedef unsigned char __u8;
/* This array collects all instances that use the generic do_table */
struct devtable {
const char *device_id; /* name of table, __mod_<name>_device_table. */
const char *device_id; /* name of table, __mod_<name>__*_device_table. */
unsigned long id_size;
void *function;
};
@ -146,7 +146,8 @@ static void device_id_check(const char *modname, const char *device_id,
if (size % id_size || size < id_size) {
fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
"of the size of section __mod_%s_device_table=%lu.\n"
"of the size of "
"section __mod_%s__<identifier>_device_table=%lu.\n"
"Fix definition of struct %s_device_id "
"in mod_devicetable.h\n",
modname, device_id, id_size, device_id, size, device_id);
@ -1216,7 +1217,7 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
{
void *symval;
char *zeros = NULL;
const char *name;
const char *name, *identifier;
unsigned int namelen;
/* We're looking for a section relative symbol */
@ -1227,7 +1228,7 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
return;
/* All our symbols are of form <prefix>__mod_XXX_device_table. */
/* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */
name = strstr(symname, "__mod_");
if (!name)
return;
@ -1237,7 +1238,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
return;
if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
return;
namelen -= strlen("_device_table");
identifier = strstr(name, "__");
if (!identifier)
return;
namelen = identifier - name;
/* Handle all-NULL symbols allocated into .bss */
if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {