euleros inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7RO5Q CVE: NA Reference: https://gitee.com/openeuler/kernel/commit/79246e864484015e1ef3c7ecec2d18a6b2...
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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 8acf71c29958..bb81ad9ca175 100644 --- a/fs/proc/etmem_scan.c +++ b/fs/proc/etmem_scan.c @@ -993,7 +993,7 @@ 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; }