From: Zhou Guanghui <zhouguanghui1@huawei.com> Offering: HULK hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5PIA4 -------------------------------- The maximum value of spg_id is checked to ensure that the value of spg_id is within the valid range: SPG_ID_DEFAULT or [SPG_ID_MIN SPG_ID_AUTO) Signed-off-by: Zhou Guanghui <zhouguanghui1@huawei.com> --- mm/share_pool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/share_pool.c b/mm/share_pool.c index de4e59e3fbbc..e490af418a33 100644 --- a/mm/share_pool.c +++ b/mm/share_pool.c @@ -2247,7 +2247,7 @@ static int sp_alloc_prepare(unsigned long size, unsigned long sp_flags, return -EINVAL; } - if (spg_id != SPG_ID_DEFAULT && spg_id < SPG_ID_MIN) { + if (spg_id != SPG_ID_DEFAULT && (spg_id < SPG_ID_MIN || spg_id >= SPG_ID_AUTO)) { pr_err_ratelimited("allocation failed, invalid group id %d\n", spg_id); return -EINVAL; } -- 2.20.1