Unverified Commit 1b432c59 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!15702 trace_events_hist: add check for return value of 'create_hist_field' 

Merge Pull Request from: @ci-robot 
 
PR sync from: Tengda Wu <wutengda2@huawei.com>
https://mailweb.openeuler.org/archives/list/kernel@openeuler.org/message/Y5SCDRIEAV7M3A3MVXCSPU4REAVF6H7L/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBWVXP 
 
Link:https://gitee.com/openeuler/kernel/pulls/15702

 

Reviewed-by: default avatarYe Weihua <yeweihua4@huawei.com>
Reviewed-by: default avatarYuan Can <yuancan@huawei.com>
Signed-off-by: default avatarYuan Can <yuancan@huawei.com>
parents fcadd9f1 2e60e0ad

kernel/trace/trace_events_hist.c

+2 −0
Original line number Diff line number Diff line
@@ -2234,6 +2234,8 @@ static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data, 
		unsigned long fl = flags & ~HIST_FIELD_FL_LOG2;

		hist_field->fn = hist_field_log2;

		hist_field->operands[0] = create_hist_field(hist_data, field, fl, NULL);

		if (!hist_field->operands[0])

			goto free;

		hist_field->size = hist_field->operands[0]->size;

		hist_field->type = kstrdup(hist_field->operands[0]->type, GFP_KERNEL);

		if (!hist_field->type)