From: Greg Kroah-Hartman gregkh@linuxfoundation.org
[ Upstream commit 33a0a1e3b3d17445832177981dc7a1c6a5b009f8 ]
kobject_get_path() does not modify the kobject passed to it, so make the pointer constant.
Cc: "Rafael J. Wysocki" rafael@kernel.org Link: https://lore.kernel.org/r/20221001165315.2690141-1-gregkh@linuxfoundation.or... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Stable-dep-of: 3bb2a01caa81 ("kobject: Fix slab-out-of-bounds in fill_kobj_path()") Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/kobject.h | 2 +- lib/kobject.c | 10 +++++----- 2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 57fb972fea05b..592f9785b058a 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -115,7 +115,7 @@ extern void kobject_put(struct kobject *kobj); extern const void *kobject_namespace(struct kobject *kobj); extern void kobject_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid); -extern char *kobject_get_path(struct kobject *kobj, gfp_t flag); +extern char *kobject_get_path(const struct kobject *kobj, gfp_t flag);
struct kobj_type { void (*release)(struct kobject *kobj); diff --git a/lib/kobject.c b/lib/kobject.c index a0b2dbfcfa233..0380ec889a6af 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -94,10 +94,10 @@ static int create_dir(struct kobject *kobj) return 0; }
-static int get_kobj_path_length(struct kobject *kobj) +static int get_kobj_path_length(const struct kobject *kobj) { int length = 1; - struct kobject *parent = kobj; + const struct kobject *parent = kobj;
/* walk up the ancestors until we hit the one pointing to the * root. @@ -112,9 +112,9 @@ static int get_kobj_path_length(struct kobject *kobj) return length; }
-static void fill_kobj_path(struct kobject *kobj, char *path, int length) +static void fill_kobj_path(const struct kobject *kobj, char *path, int length) { - struct kobject *parent; + const struct kobject *parent;
--length; for (parent = kobj; parent; parent = parent->parent) { @@ -136,7 +136,7 @@ static void fill_kobj_path(struct kobject *kobj, char *path, int length) * * Return: The newly allocated memory, caller must free with kfree(). */ -char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask) +char *kobject_get_path(const struct kobject *kobj, gfp_t gfp_mask) { char *path; int len;