pstore/zone: Add a null pointer check to the psz_kmsg_read
authorKunwu Chan <chentao@kylinos.cn>
Thu, 18 Jan 2024 10:02:06 +0000 (18:02 +0800)
committerKees Cook <keescook@chromium.org>
Thu, 22 Feb 2024 18:37:22 +0000 (10:37 -0800)
commit98bc7e26e14fbb26a6abf97603d59532475e97f8
tree62324bcb49adccdc5657f3e3d2f2a92a20f2ef0f
parenta28655c330ab294862cabe66deadb0f85cd4f191
pstore/zone: Add a null pointer check to the psz_kmsg_read

kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20240118100206.213928-1-chentao@kylinos.cn
Signed-off-by: Kees Cook <keescook@chromium.org>
fs/pstore/zone.c