[ck] [PATCH openEuler v1 099/119] openEuler: arm64/mpam: only add new domain node to domain list

From: Xie XiuQi <xiexiuqi(a)huawei.com> commit 6c712a877e7e00c6cd47d581f223fd5ded6efcff openEuler-1.0 hulk inclusion category: bugfix bugzilla: 14212 CVE: NA Only add a new domain to domain list, don't care about exist domain node. Signed-off-by: Xie XiuQi <xiexiuqi(a)huawei.com> Reviewed-by: Hanjun Guo <guohanjun(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Signed-off-by: Xin Hao <haoxing990(a)gmail.com> --- arch/arm64/kernel/mpam.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/mpam.c b/arch/arm64/kernel/mpam.c index a83b43c9dcaa..c38c13bde995 100644 --- a/arch/arm64/kernel/mpam.c +++ b/arch/arm64/kernel/mpam.c @@ -1208,6 +1208,8 @@ static void mpam_domains_init(struct resctrl_resource *r) if (!d) d = kzalloc(sizeof(*d), GFP_KERNEL); + else + continue; if (!d) { mpam_domains_destroy(r); @@ -1263,7 +1265,8 @@ static void mpam_domains_init(struct resctrl_resource *r) return; } - list_add_tail(&d->list, add_pos); + if (add_pos) + list_add_tail(&d->list, add_pos); id++; } -- 2.31.0