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-rw-r--r--fs/sysfs/file.c8
-rw-r--r--fs/sysfs/group.c4
2 files changed, 9 insertions, 3 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index f35523d4fa3a..b803213d1307 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -114,9 +114,15 @@ static ssize_t sysfs_kf_read(struct kernfs_open_file *of, char *buf,
* If buf != of->prealloc_buf, we don't know how
* large it is, so cannot safely pass it to ->show
*/
- if (pos || WARN_ON_ONCE(buf != of->prealloc_buf))
+ if (WARN_ON_ONCE(buf != of->prealloc_buf))
return 0;
len = ops->show(kobj, of->kn->priv, buf);
+ if (pos) {
+ if (len <= pos)
+ return 0;
+ len -= pos;
+ memmove(buf, buf + pos, len);
+ }
return min(count, len);
}
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index dc1358b5ec95..ac2de0ed69ad 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -233,8 +233,8 @@ void sysfs_remove_group(struct kobject *kobj,
kn = kernfs_find_and_get(parent, grp->name);
if (!kn) {
WARN(!kn, KERN_WARNING
- "sysfs group %p not found for kobject '%s'\n",
- grp, kobject_name(kobj));
+ "sysfs group '%s' not found for kobject '%s'\n",
+ grp->name, kobject_name(kobj));
return;
}
} else {