hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8WVL2 CVE: NA

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oc->chosen may be assigned with -1 in oom_evaluate_task(), but memcg_print_bad_task() doesn't check whether oc->chosen is -1 before dereference it.

Signed-off-by: Jinjiang Tu tujinjiang@huawei.com --- mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 7ab0eec942ba..8327cef9d53a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4219,7 +4219,7 @@ void memcg_print_bad_task(struct oom_control *oc) if (memcg_oom_prio_disabled()) return;

- if (oc->chosen) { + if (oc->chosen && oc->chosen != (void *)-1UL) { struct mem_cgroup *memcg;

rcu_read_lock();