diff options
| -rw-r--r-- | fs/proc/kcore.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 70733780fdd..3d0485c361c 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -107,6 +107,8 @@ static void free_kclist_ents(struct list_head *head) */ static void __kcore_update_ram(struct list_head *list) { + int nphdr; + size_t size; struct kcore_list *tmp, *pos; LIST_HEAD(garbage); @@ -121,6 +123,7 @@ static void __kcore_update_ram(struct list_head *list) } else list_splice(list, &garbage); kcore_need_update = 0; + proc_root_kcore->size = get_kcore_size(&nphdr, &size); write_unlock(&kclist_lock); free_kclist_ents(&garbage); @@ -429,7 +432,8 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) unsigned long start; read_lock(&kclist_lock); - proc_root_kcore->size = size = get_kcore_size(&nphdr, &elf_buflen); + size = get_kcore_size(&nphdr, &elf_buflen); + if (buflen == 0 || *fpos >= size) { read_unlock(&kclist_lock); return 0; |