diff options
| author |   Alexey Dobriyan <adobriyan@sw.ru> | 2007-05-08 00:28:47 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:15:08 -0700 |
| commit | a5c43dae7ae38c2a6b3e9a819bcf45f010bf6a4a (patch) | |
| tree | b30da7a4541e803e35a6a74ad33e836442c3f6c8 /kernel/module.c | |
| parent | Fix race between cat /proc/*/wchan and rmmod et al (diff) | |
| download | linux-dev-a5c43dae7ae38c2a6b3e9a819bcf45f010bf6a4a.tar.xz linux-dev-a5c43dae7ae38c2a6b3e9a819bcf45f010bf6a4a.zip | |
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>
Diffstat (limited to 'kernel/module.c')
| -rw-r--r-- | kernel/module.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/module.c b/kernel/module.c index 3da76ad32d78..d36e45477fac 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2149,6 +2149,33 @@ out: return -ERANGE; } +int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, + unsigned long *offset, char *modname, char *name) +{ + struct module *mod; + + mutex_lock(&module_mutex); + list_for_each_entry(mod, &modules, list) { + if (within(addr, mod->module_init, mod->init_size) || + within(addr, mod->module_core, mod->core_size)) { + const char *sym; + + sym = get_ksymbol(mod, addr, size, offset); + if (!sym) + goto out; + if (modname) + strlcpy(modname, mod->name, MODULE_NAME_LEN + 1); + if (name) + strlcpy(name, sym, KSYM_NAME_LEN + 1); + mutex_unlock(&module_mutex); + return 0; + } + } +out: + mutex_unlock(&module_mutex); + return -ERANGE; +} + int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, char *name, char *module_name, int *exported) { |