From: liubo <liubo254@huawei.com> euleros inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4VUFS CVE: NA ------------------------------------------------- The etmem_scan.ko module is used to scan the process memory. The specific usage is as follows: The etmem user mode process issues scan commands through /proc/pid/idle_pages, and the etmem_scan module scans based on the issued address information. Under certain circumstances, the phenomenon that the scan result is empty may occur. This phenomenon is a normal logic flow and does not need to print the log through WARN_ONCE. Therefore, Replace WARN_ONCE() with debug_printk for "nothing read" Signed-off-by: liubo <liubo254@huawei.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- fs/proc/etmem_scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/proc/etmem_scan.c b/fs/proc/etmem_scan.c index ec06e606ca7b..8bcb8d3af7c5 100644 --- a/fs/proc/etmem_scan.c +++ b/fs/proc/etmem_scan.c @@ -1244,7 +1244,7 @@ static int mm_idle_walk_range(struct page_idle_ctrl *pic, pic->next_hva, end); ret = 0; } else - WARN_ONCE(1, "nothing read"); + debug_printk("nothing read"); return ret; } -- 2.20.1